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6966 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Thomas Weißschuh
|
434506b86a |
driver core: Allow the constification of device attributes
Allow device attribute to reside in read-only memory. Both const and non-const attributes are handled by the utility macros and attributes can be migrated one-by-one. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Link: https://patch.msgid.link/20260512-sysfs-const-attr-device_attr-prep-v3-4-cb7c17b34d52@weissschuh.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Herve Codina
|
36d74f17e0 |
driver core: Avoid warning when removing a device while its supplier is unbinding
During driver removal, the following warning can appear:
WARNING: CPU: 1 PID: 139 at drivers/base/core.c:1497 __device_links_no_driver+0xcc/0xfc
...
Call trace:
__device_links_no_driver+0xcc/0xfc (P)
device_links_driver_cleanup+0xa8/0xf0
device_release_driver_internal+0x208/0x23c
device_links_unbind_consumers+0xe0/0x108
device_release_driver_internal+0xec/0x23c
device_links_unbind_consumers+0xe0/0x108
device_release_driver_internal+0xec/0x23c
device_links_unbind_consumers+0xe0/0x108
device_release_driver_internal+0xec/0x23c
driver_detach+0xa0/0x12c
bus_remove_driver+0x6c/0xbc
driver_unregister+0x30/0x60
pci_unregister_driver+0x20/0x9c
lan966x_pci_driver_exit+0x18/0xa90 [lan966x_pci]
This warning is triggered when a consumer is removed because the links
status of its supplier is not DL_DEV_DRIVER_BOUND and the link flag
DL_FLAG_SYNC_STATE_ONLY is not set.
The topology in terms of consumers/suppliers used was the following
(consumer ---> supplier):
i2c -----------> OIC ----> PCI device
| ^
| |
+---> pinctrl ---+
When the PCI device is removed, the OIC (interrupt controller) has to be
removed. In order to remove the OIC, pinctrl and i2c need to be removed
and to remove pinctrl, i2c need to be removed. The removal order is:
1) i2c
2) pinctrl
3) OIC
4) PCI device
In details, the removal sequence is the following (with 0000:01:00.0 the
PCI device):
driver_detach: call device_release_driver_internal(0000:01:00.0)...
device_links_busy(0000:01:00.0):
links->status = DL_DEV_UNBINDING
device_links_unbind_consumers(0000:01:00.0):
0000:01:00.0--oic link->status = DL_STATE_SUPPLIER_UNBIND
call device_release_driver_internal(oic)...
device_links_busy(oic):
links->status = DL_DEV_UNBINDING
device_links_unbind_consumers(oic):
oic--pinctrl link->status = DL_STATE_SUPPLIER_UNBIND
call device_release_driver_internal(pinctrl)...
device_links_busy(pinctrl):
links->status = DL_DEV_UNBINDING
device_links_unbind_consumers(pinctrl):
pinctrl--i2c link->status = DL_STATE_SUPPLIER_UNBIND
call device_release_driver_internal(i2c)...
device_links_busy(i2c): links->status = DL_DEV_UNBINDING
__device_links_no_driver(i2c)...
pinctrl--i2c link->status is DL_STATE_SUPPLIER_UNBIND
oic--i2c link->status is DL_STATE_ACTIVE
oic--i2c link->supplier->links.status is DL_DEV_UNBINDING
The warning is triggered by the i2c removal because the OIC (supplier)
links status is not DL_DEV_DRIVER_BOUND. Its links status is indeed set
to DL_DEV_UNBINDING.
It is perfectly legit to have the links status set to DL_DEV_UNBINDING
in that case. Indeed we had started to unbind the OIC which triggered
the consumer unbinding and didn't finish yet when the i2c is unbound.
Avoid the warning when the supplier links status is set to
DL_DEV_UNBINDING and thus support this removal sequence without any
warnings.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Rafael J. Wysocki <rafael@kernel.org>
Reviewed-by: Saravana Kannan <saravanak@google.com>
Link: https://patch.msgid.link/20260511155755.34428-4-herve.codina@bootlin.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Saravana Kannan
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81e7c6befa |
of: dynamic: Fix overlayed devices not probing because of fw_devlink
When an overlay is applied, if the target device has already probed
successfully and bound to a device, then some of the fw_devlink logic
that ran when the device was probed needs to be rerun. This allows newly
created dangling consumers of the overlayed device tree nodes to be
moved to become consumers of the target device.
[Herve: Add the call to driver_deferred_probe_trigger()]
[Herve: Use fwnode_test_flag() to test fwnode flags value]
Fixes:
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Zhang Yuwei
|
1137838865 |
driver core: Use mod_delayed_work to prevent lost deferred probe work
The deferred_probe_timeout_work may be permanently and unexpectedly
canceled when deferred_probe_extend_timeout() executes concurrently.
Starting with deferred_probe_timeout_work pending, the problem can
occur after the following sequence:
CPU0 CPU1
deferred_probe_extend_timeout
-> cancel_delayed_work() => true
deferred_probe_extend_timeout
-> cancel_delayed_work()
-> __cancel_work()
-> try_grab_pending()
-> schedule_delayed_work()
-> queue_delayed_work_on()
(Since the pending bit is grabbed,
it just returns without queuing)
-> set_work_pool_and_clear_pending()
(This __cancel_work() returns false and
the work will never be queued again)
The root cause is that the WORK_STRUCT_PENDING_BIT of the work_struct
is set temporarily in __cancel_work() (via try_grab_pending()). This
transient state prevents the work_struct from being successfully queued
by another CPU.
To fix this, replace the original non-atomic cancel and schedule
mechanism with mod_delayed_work(). This ensures the modification is
handled atomically and guarantees that the work is not lost.
Fixes:
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Stepan Ionichev
|
9582485a65 |
device property: fix fwnode reference leak in fwnode_graph_get_endpoint_by_id()
When called with FWNODE_GRAPH_ENDPOINT_NEXT, the function walks every
endpoint under the requested port and, for any endpoint whose ID is
greater than or equal to the requested one, may store a fwnode
reference in best_ep via fwnode_handle_get(). If a later iteration
finds an exact-ID match, the function returns that endpoint directly
without dropping the reference held by best_ep, leaking it.
Drop the saved candidate before returning the exact-match endpoint.
This affects callers that use FWNODE_GRAPH_ENDPOINT_NEXT to ask for
the next endpoint with ID >= the requested one (used by a number of
media drivers, e.g. imx7/8, sun6i CSI, omap3isp, xilinx-csi2,
stm32-csi). Each leak retains a fwnode reference until reboot/unbind.
Fixes:
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Heiner Kallweit
|
9ecab063e9 |
driver core: constify group arrays arguments in driver_add_groups and driver_remove_groups
Constify the groups array argument in driver_add_groups and driver_remove_groups. This allows to pass constant arrays as arguments. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Link: https://patch.msgid.link/21a1e5f1-c6a0-4f6f-aa86-1e6abd25f9c6@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Heiner Kallweit
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b2c885b362 |
devcoredump: Remove exit call
Kconfig symbol DEV_COREDUMP is of type bool, therefore devcoredump can't be built as a module and the exit code is a no-op. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Link: https://patch.msgid.link/39a3821b-03d6-4ff0-97b7-82411a76d39a@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Nishanth Sampath Kumar
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34808ac8dd
|
regmap-i2c: fix sparse warning in regmap_smbus_word_write_reg16
i2c_smbus_write_word_data() expects a plain u16, but cpu_to_le16()
returns __le16 (a sparse-restricted endian type), causing:
drivers/base/regmap/regmap-i2c.c:340: sparse: incorrect type in
argument 3 (different base types)
expected unsigned short [usertype] value
got restricted __le16 [usertype]
SMBus already defines byte ordering internally, so cpu_to_le16() is
wrong here. Replace it with a plain (u16) cast.
Fixes:
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Peter Zijlstra
|
a26d9208c1 |
Merge branch 'sched/cache'
Merge the cache aware balancer topic branch. # Conflicts: # kernel/sched/topology.c |
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Chen Yu
|
7030513a08 |
sched/cache: Calculate the LLC size and store it in sched_domain
Cache aware scheduling needs to know the LLC size that a process can use, so as to avoid memory-intensive tasks from being over-aggregated on a single LLC. Introduce a preparation patch to add get_effective_llc_bytes() to get the LLC size that a CPU can use. The function can be further enhanced by subtracting the LLC cache ways reserved by resctrl (CAT in Intel RDT, etc). Suggested-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Chen Yu <yu.c.chen@intel.com> Co-developed-by: Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Tingyin Duan <tingyin.duan@gmail.com> Link: https://patch.msgid.link/37afee09ff608034da0ce149e72d33b6f4698edf.1778703694.git.tim.c.chen@linux.intel.com |
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Arnd Bergmann
|
49ff66206e |
FSL SOC Changes for 7.1
Freescale QUICC Engine: - Add missing cleanup on device removal and switch to irq_domain_create_linear() in interrupt controller for IO Ports - Panic on ioremap() failure in qe_reset() Freescale Management Complex: - Move fsl-mc over to device MSI infrastructure - Wait for the MC firmware to complete its boot Freescale Hypervisor: - Fix header kernel-doc warnings -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTH/wu6mIr0ZW+Vui/dkHAmvKvPUwUCad8lggAKCRDdkHAmvKvP U3/HAQCNklj/7KSYApkif9zHTi3ITtY5YkunkfTVamnx+Ti6PgD+KE1yOnXtaumM gbrwGcjenjhz+nuFuRRWJ8kN/SQeAwI= =kIgf -----END PGP SIGNATURE----- gpgsig -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEo6/YBQwIrVS28WGKmmx57+YAGNkFAmoLKU8ACgkQmmx57+YA GNm42A//bz/gpNKsJYtcA2NNVCjC5ysFBu8e7KlHAO4zJ1OJZkRglDB6Rb3E6+oR oSd4G4erumrcpGoF7szkgZDKmXul6tUi2Gov2jkrG3cNUG24KA5wUj59bq9G2Bsb b8VZa+J+YzBEcJUAikWJuaMKU0KeH/N15284qREoIoXQFk+A5YM21N4PR8vwS6bC i5rdAsmRXJwtvDWW96opUyfvVUEe+1fqniOGhRtFDPMN3wAmItd9/uFYsKxg5L6r 2cNw0q9zdHG6RPNN6f3S48BtDmzGCGLwo+O8v0P1RDuC6bU7UVXhmKVRyUMmqP9Z fOTFXqV22V6iseVzIb3PCw4jQ+YVf1ROkJBNKGgDvpQ6Q3MKe8ONbR3DF8vjNzcL vOmPIVuCQalxvdaKRg508p4Vj4dyKQz9EdGQ7oHPbqANycu/Jdlfoumg3o2IPmf6 7dI9dYeG4/egG522//ynduHPvwJU9U4oXfB64dlDv4cTjLDsabFajfLTdy7ElmXH gSDaBCc9JmZ6/ESNYmrsuXBSWeuxuH9ZB+9Ztfymt/nqnqi3kl0CPqsD1NNACneB JSczPDhl8Cu9yGYMc4kTcZNRE7B69HAn9MGbe7Jv5yOfWHo0mRoBXVz7UdakY9HU GhrdpmqCbiY6TjeTjLVXmVvJQZn+stFuP4ce5FmxxU+xTZ8Yofo= =2Tv8 -----END PGP SIGNATURE----- Merge tag 'soc_fsl-7.1-2' of https://git.kernel.org/pub/scm/linux/kernel/git/chleroy/linux into soc/drivers FSL SOC Changes for 7.1 Freescale QUICC Engine: - Add missing cleanup on device removal and switch to irq_domain_create_linear() in interrupt controller for IO Ports - Panic on ioremap() failure in qe_reset() Freescale Management Complex: - Move fsl-mc over to device MSI infrastructure - Wait for the MC firmware to complete its boot Freescale Hypervisor: - Fix header kernel-doc warnings * tag 'soc_fsl-7.1-2' of https://git.kernel.org/pub/scm/linux/kernel/git/chleroy/linux: bus: fsl-mc: wait for the MC firmware to complete its boot soc: fsl: qe: panic on ioremap() failure in qe_reset() soc: fsl: qe_ports_ic: switch to irq_domain_create_linear() soc: fsl: qe_ports_ic: Add missing cleanup on device removal virt: fsl_hypervisor: fix header kernel-doc warnings platform-msi: Remove stale comment fsl-mc: Remove legacy MSI implementation fsl-mc: Switch over to per-device platform MSI irqchip/gic-v3-its: Add fsl_mc device plumbing to the msi-parent handling fsl-mc: Add minimal infrastructure to use platform MSI fsl-mc: Remove MSI domain propagation to sub-devices Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
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Takashi Iwai
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0cf8217272 |
Merge branch 'for-linus' into for-next
Signed-off-by: Takashi Iwai <tiwai@suse.de> |
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Samuel Wu
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5ff4495544 |
PM: wakeup: Add kfuncs to traverse over wakeup_sources
Iterating through wakeup sources via sysfs or debugfs can be inefficient or restricted. Introduce BPF kfuncs to allow high-performance and safe in-kernel traversal of the wakeup_sources list. There is at least a 30x speedup for walking 150 wakeup sources and all their attributes. The new kfuncs include: - bpf_wakeup_sources_get_head() to obtain the list head. - bpf_wakeup_sources_read_lock/unlock() to manage the SRCU lock. For verifier safety, the underlying SRCU index is wrapped in an opaque 'struct bpf_ws_lock' pointer. This enables the use of KF_ACQUIRE and KF_RELEASE flags, allowing the BPF verifier to strictly enforce paired lock/unlock cycles and prevent resource leaks. Signed-off-by: Samuel Wu <wusamuel@google.com> Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Acked-by: Rafael J. Wysocki (Intel) <rafael@kernel.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20260511174559.659782-2-wusamuel@google.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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Muchun Song
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03a2cc1756 |
drivers/base/memory: fix memory block reference leak in poison accounting
memblk_nr_poison_inc() and memblk_nr_poison_sub() look up a memory block
via find_memory_block_by_id(), which acquires a reference to the memory
block device.
Both helpers use the returned memory block without dropping that
reference, leaking the device reference on each successful lookup. Drop
the reference after updating nr_hwpoison.
Link: https://lore.kernel.org/20260428085219.1316047-3-songmuchun@bytedance.com
Fixes:
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Bartosz Golaszewski
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50030d63b4 |
driver core: platform: remove software node on release()
If we pass a software node to a newly created device using struct
platform_device_info, it will not be removed when the device is
released. This may happen when a module creating the device is removed
or on failure in platform_device_add().
When we try to reuse that software node in a subsequent call to
platform_device_register_full(), it will fail with -EBUSY.
Provide a wrapper around the existing platform_device_release() that
additionally calls device_remove_software_node() and use it to replace
the former if we end up adding a software node.
While at it: check all three possible situations in which two software
nodes for a single platform device can be created/assigned in
platform_device_register_full() and bail-out early.
Fixes:
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Danilo Krummrich
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8d3bea93f4 |
Merge patch series "rust: auxiliary: replace drvdata() with registration data"
Danilo Krummrich <dakr@kernel.org> says:
When drvdata() was introduced in commit
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Danilo Krummrich
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95ade775c4 |
rust: driver core: remove drvdata() and driver_type
When drvdata() was introduced in commit
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Bartosz Golaszewski
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c393ef0741 |
software node: provide wrappers around kobject_get/put()
Make the code more readable by avoid constant dereferencing of the swnode's kobject when managing references. Provide wrappers that take struct swnode * as argument and make them hide that logic. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com> Reviewed-by: Rafael J. Wysocki (Intel) <rafael@kernel.org> Link: https://patch.msgid.link/20260427131825.15793-1-bartosz.golaszewski@oss.qualcomm.com Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
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Guangshuo Li
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896df22ee5 |
firmware_loader: fix device reference leak in firmware_upload_register()
firmware_upload_register()
-> fw_create_instance()
-> device_initialize()
After fw_create_instance() succeeds, the lifetime of the embedded struct
device is expected to be managed through the device core reference
counting, since fw_create_instance() has already called
device_initialize().
In firmware_upload_register(), if alloc_lookup_fw_priv() fails after
fw_create_instance() succeeds, the code reaches free_fw_sysfs and frees
fw_sysfs directly instead of releasing the device reference with
put_device(). This may leave the reference count of the embedded struct
device unbalanced, resulting in a refcount leak.
The issue was identified by a static analysis tool I developed and
confirmed by manual review. Fix this by using put_device(fw_dev) in the
failure path and letting fw_dev_release() handle the final cleanup,
instead of freeing the instance directly from the error path.
Fixes:
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Cássio Gabriel
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b9bdd68b8b |
firmware_loader: Add cancel helper for async requests
request_firmware_nowait() keeps the callback module pinned and holds a device reference until the firmware work completes. Callers still have no way to cancel or synchronize the queued callback before tearing down their driver-private state. Track scheduled async firmware work in an internal list and add request_firmware_nowait_cancel(). The helper cancels work matching the device, callback context and callback function. It cancels work that has not started yet and waits for an already-running callback to return. If the request has already completed, it is a no-op. Keep the existing request_firmware_nowait() lifetime model manual. A devres-managed variant can be layered on top separately if needed. Signed-off-by: Cássio Gabriel <cassiogabrielcontato@gmail.com> Reviewed-by: Takashi Iwai <tiwai@suse.de> Acked-by: Danilo Krummrich <dakr@kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://patch.msgid.link/20260505-alsa-hda-tas2781-fw-callback-teardown-v4-1-e7c4bf930dc8@gmail.com |
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Johan Hovold
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30c878ed16 |
isa: switch to dynamic root device
Driver core expects devices to be dynamically allocated and will, for example, complain loudly if a device that lacks a release function is ever freed. Use root_device_register() to allocate and register the root device instead of open coding using a static device. Note that this also fixes a reference leak in case device_register() fails which may be flagged by static checkers. Signed-off-by: Johan Hovold <johan@kernel.org> Acked-by: William Breathitt Gray <wbg@kernel.org> Link: https://patch.msgid.link/20260424102400.2615677-1-johan@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
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Johan Hovold
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36f35b8df6 |
driver core: reject devices with unregistered buses
Trying to register a device on a bus which has not yet been registered
used to trigger a NULL-pointer dereference, but since the const bus
structure rework registration instead succeeds without the device being
added to the bus.
This specifically means that the device will never bind to a driver and
that the bus sysfs attributes are not created (i.e. as if the device had
no bus).
Reject devices with unregistered buses to catch any callers that get
the ordering wrong and to handle bus registration failures more
gracefully.
Fixes:
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Johan Hovold
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1a262c768f |
driver core: faux: clean up init error handling
Clean up the faux bus init error handling by naming the labels after what they do (rather than from where they are jumped to) and separating the success path more clearly by returning explicit zero. Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://patch.msgid.link/20260424153127.2647405-3-johan@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
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Johan Hovold
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580a795105 |
driver core: faux: fix root device registration
A recent change made the faux bus root device be allocated dynamically
but failed to provide a release function to free the memory when the
last reference is dropped (on theoretical failure to register the device
or bus).
Fix this by using root_device_register() instead of open coding.
Also add the missing sanity check when registering faux devices to avoid
use-after-free if the bus failed to register (which would previously
have triggered a bunch of use-after-free warnings).
Fixes:
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Danilo Krummrich
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9db268212e |
driver core: move dev_has_sync_state() to drivers/base/base.h
All callers of dev_has_sync_state() are in drivers/base/ and any attempt to use it outside of driver-core should require good justification, so there is no need to have it defined in include/linux/device.h. Thus, move it to drivers/base/base.h. Suggested-by: Rafael J. Wysocki (Intel) <rafael@kernel.org> Link: https://lore.kernel.org/driver-core/CAJZ5v0jkm9K9=-U_51FMsyxN2msdouRnz4sEjmxG0Btd6Hmw0w@mail.gmail.com/ Reviewed-by: Rafael J. Wysocki (Intel) <rafael@kernel.org> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://patch.msgid.link/20260420234153.2898532-1-dakr@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
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Douglas Anderson
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a7cc262a11 |
driver core: Replace dev->offline + ->offline_disabled with accessors
In C, bitfields are not necessarily safe to modify from multiple threads without locking. Switch "offline" and "offline_disabled" over to the "flags" field so modifications are safe. Cc: Rafael J. Wysocki <rafael@kernel.org> Acked-by: Mark Brown <broonie@kernel.org> Reviewed-by: Rafael J. Wysocki (Intel) <rafael@kernel.org> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Douglas Anderson <dianders@chromium.org> Link: https://patch.msgid.link/20260406162231.v5.9.I897d478b4a9361d79cd5073207c1062fd4d0d0e4@changeid Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
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Douglas Anderson
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4aca5e62f3 |
driver core: Replace dev->of_node_reused with dev_of_node_reused()
In C, bitfields are not necessarily safe to modify from multiple threads without locking. Switch "of_node_reused" over to the "flags" field so modifications are safe. Cc: Johan Hovold <johan@kernel.org> Acked-by: Mark Brown <broonie@kernel.org> Reviewed-by: Rafael J. Wysocki (Intel) <rafael@kernel.org> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Signed-off-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Johan Hovold <johan@kernel.org> Acked-by: Manivannan Sadhasivam <mani@kernel.org> # PCI_PWRCTRL Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Link: https://patch.msgid.link/20260406162231.v5.8.I806b8636cd3724f6cd1f5e199318ab8694472d90@changeid Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
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Colin Ian King
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4b7774eeab
|
regmap: sdw-mbq: Fix spelling mistake "undeferable" -> "undeferrable"
There is a spelling mistake in a dev_warn message. Fix it. Signed-off-by: Colin Ian King <colin.i.king@gmail.com> Link: https://patch.msgid.link/20260424112425.32129-1-colin.i.king@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org> |
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Douglas Anderson
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3e2c1e213a |
driver core: Replace dev->dma_coherent with dev_dma_coherent()
In C, bitfields are not necessarily safe to modify from multiple threads without locking. Switch "dma_coherent" over to the "flags" field so modifications are safe. Cc: Christoph Hellwig <hch@lst.de> Reviewed-by: Rafael J. Wysocki (Intel) <rafael@kernel.org> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Acked-by: Vinod Koul <vkoul@kernel.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Douglas Anderson <dianders@chromium.org> Link: https://patch.msgid.link/20260406162231.v5.7.If839f6dde98979fce177f70c6c74689a1904ee76@changeid [ Since all DEV_FLAG_DMA_COHERENT accessors are exposed unconditionally, also drop the CONFIG guards around dev_assign_dma_coherent() in device_initialize() to ensure a correct default value. - Danilo ] Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
||
|
Douglas Anderson
|
7befbf1281 |
driver core: Replace dev->state_synced with dev_state_synced()
In C, bitfields are not necessarily safe to modify from multiple threads without locking. Switch "state_synced" over to the "flags" field so modifications are safe. Cc: Saravana Kannan <saravanak@kernel.org> Reviewed-by: Rafael J. Wysocki (Intel) <rafael@kernel.org> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Douglas Anderson <dianders@chromium.org> Link: https://patch.msgid.link/20260406162231.v5.6.Idb4818e1159fef104c7756bfd6e7ba8f374bebcd@changeid Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
||
|
Douglas Anderson
|
f2648bb315 |
driver core: Replace dev->can_match with dev_can_match()
In C, bitfields are not necessarily safe to modify from multiple threads without locking. Switch "can_match" over to the "flags" field so modifications are safe. Cc: Saravana Kannan <saravanak@kernel.org> Reviewed-by: Rafael J. Wysocki (Intel) <rafael@kernel.org> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Douglas Anderson <dianders@chromium.org> Link: https://patch.msgid.link/20260406162231.v5.2.I54b3ae6311ff34ad30227659d91bb109911a4aea@changeid Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
||
|
Linus Torvalds
|
6e2d43100c |
regmap: Fixes for v7.1
There's couple of patches here that came in since my pull request:
- What is effectively a quirk for shoehorning support for a wider range
of I2C regmaps on weirdly restricted SMBus controllers.
- One minor fix for a memory leak on in error handling in the dummy
driver used by the KUnit tests.
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Merge tag 'regmap-fix-v7.1-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap fixes from Mark Brown:
"There's couple of patches here that came in since my pull request:
- What is effectively a quirk for shoehorning support for a wider
range of I2C regmaps on weirdly restricted SMBus controllers
- One minor fix for a memory leak on in error handling in the dummy
driver used by the KUnit tests"
* tag 'regmap-fix-v7.1-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: ram: fix memory leaks in __regmap_init_ram() on error
regmap-i2c: add SMBus byte/word reg16 bus for adapters lacking I2C_FUNC_I2C
|
||
|
Linus Torvalds
|
1fe93b2a2a |
sound fixes for 7.1-rc1
Here are the rest of small updates for 7.1-rc1. All small fixes
mostly for device-specific issues or regressions.
* Core:
- Fix a potential data race in fasync handling
* USB-audio:
- New device support: Line6 POD HD PRO, NexiGo N930W webcam
- Fixes for Audio Advantage Micro II SPDIF switch and E-MU sample rates
- Limit UAC2 rate parsing to prevent potential overflows
* HD-Audio:
- Device-specific quirks for HP, Acer, and Honor laptops
- Fix for TAS2781 SPI device abnormal sound
- Move Intel firmware loading into probe work to avoid stalling
* ASoC:
- New support for TI TAS5832
- Fixes for SoundWire SDCA/DisCo boolean parsing
- Driver-specific fixes for Intel SOF, ES8311, RT1320, and PXA2xx
* Misc:
- Fixes for resource leaks and data races in 6fire, caiaq, als4000,
and pcmtest drivers
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Merge tag 'sound-fix-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Here are the rest of small updates for 7.1-rc1. All small fixes mostly
for device-specific issues or regressions.
Core:
- Fix a potential data race in fasync handling
USB-audio:
- New device support: Line6 POD HD PRO, NexiGo N930W webcam
- Fixes for Audio Advantage Micro II SPDIF switch and E-MU sample
rates
- Limit UAC2 rate parsing to prevent potential overflows
HD-Audio:
- Device-specific quirks for HP, Acer, and Honor laptops
- Fix for TAS2781 SPI device abnormal sound
- Move Intel firmware loading into probe work to avoid stalling
ASoC:
- New support for TI TAS5832
- Fixes for SoundWire SDCA/DisCo boolean parsing
- Driver-specific fixes for Intel SOF, ES8311, RT1320, and PXA2xx
Misc:
- Fixes for resource leaks and data races in 6fire, caiaq, als4000,
and pcmtest drivers"
* tag 'sound-fix-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (41 commits)
Revert "ALSA: pcmtest: fix reference leak on failed device registration"
ASoC: tas2781: Add tas5832 support
ASoC: dt-bindings: ti,tas2781: Add TAS5832 support
ALSA: usb-audio: Fix Audio Advantage Micro II SPDIF switch
ALSA: usb-audio: Avoid false E-MU sample-rate notifications
ASoC: sdw_utils: cs42l43: allow spk component names to be combined
ASoC: qcom: x1e80100: limit speaker volumes
ALSA: hda/realtek - Add mute LED support for HP Victus 15-fa2xxx
ALSA: pcmtest: Fix resource leaks in module init error paths
ALSA: usb-audio/line6: Add support for POD HD PRO
ALSA: hda/realtek: Add LED fixup for HP EliteBook 6 G2a Laptops
ASoC: SDCA: Fix reading of mipi-sdca-control-deferrable
regmap: sdw-mbq: Allow defers on undeferrable controls
Revert "ALSA: usb-audio: Add quirk for SmartlinkTechnology M01"
ALSA: als4000: Fix capture trigger chip->mode race
ALSA: core: Fix potential data race at fasync handling
ALSA: hda/tas2781: Fix sound abnormal issue on some SPI device
ALSA: hda/realtek: add quirk for Acer Nitro 16 AN16-41
ALSA: caiaq: Fix control_put() result and cache rollback
ALSA: pcmtest: fix reference leak on failed device registration
...
|
||
|
Charles Keepax
|
ca1b11b36d
|
regmap: sdw-mbq: Allow defers on undeferrable controls
It is a fairly common DisCo issue to have the deferrability of controls marked incorrectly and Windows seems very permissive in this regard. As there isn't really any down side to trying a defer even if the control isn't deferrable, allow this but add a warning message. Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> Link: https://patch.msgid.link/20260413124621.1345315-2-ckeepax@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@kernel.org> |
||
|
Linus Torvalds
|
8c2bf4a2e5 |
Driver core fixes for 7.1-rc1
- Prevent a device from being probed before device_add() has finished initializing it; gate probe with a "ready_to_probe" device flag to avoid races with concurrent driver_register() calls - Fix a kernel-doc warning for DEV_FLAG_COUNT introduced by the above - Return -ENOTCONN from software_node_get_reference_args() when a referenced software node is known but not yet registered, allowing callers to defer probe - In sysfs_group_attrs_change_owner(), also check is_visible_const(); missed when the const variant was introduced -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQS2q/xV6QjXAdC7k+1FlHeO1qrKLgUCaePuOwAKCRBFlHeO1qrK LrBdAP9hcc5TBpPgbW4vdpsGgPhspz2x3Ijq0m91354RT2KISwEAx0ZHu6pvtLb/ hW0hHvk0onL6uBbCR6629U+A/xQ79go= =Hdaa -----END PGP SIGNATURE----- Merge tag 'driver-core-7.1-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core Pull driver core fixes from Danilo Krummrich: - Prevent a device from being probed before device_add() has finished initializing it; gate probe with a "ready_to_probe" device flag to avoid races with concurrent driver_register() calls - Fix a kernel-doc warning for DEV_FLAG_COUNT introduced by the above - Return -ENOTCONN from software_node_get_reference_args() when a referenced software node is known but not yet registered, allowing callers to defer probe - In sysfs_group_attrs_change_owner(), also check is_visible_const(); missed when the const variant was introduced * tag 'driver-core-7.1-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: driver core: Add kernel-doc for DEV_FLAG_COUNT enum value sysfs: attribute_group: Respect is_visible_const() when changing owner software node: return -ENOTCONN when referenced swnode is not registered yet driver core: Don't let a device probe until it's ready |
||
|
Yuho Choi
|
7e555fcae4
|
regmap: ram: fix memory leaks in __regmap_init_ram() on error
Two allocations in __regmap_init_ram() are not cleaned up on failure.
If the kzalloc_objs() for data->written fails, data->read is returned
with no way for the caller to free it.
If __regmap_init() fails, neither data->read nor data->written is freed
because its error paths do not call bus->free_context() (which is
regmap_ram_free_context() here). Only regmap_exit() does, and that is
never reached on an init failure.
Free the allocated arrays before returning any error.
Fixes:
|
||
|
Linus Torvalds
|
8e258317dd |
regmap: Updates for v7.1
This has been quite a busy release for regmap, the user visible changes
are quite minor but there's some quite good work on internal code
improvements.
- Cleanup helper for __free()ing regmap_fields.
- Support non-devm I3C regmaps.
- A bunch of cleanup work, mostly from Andy Shevchenko.
- Fix for bootstrapping issues with hardware initialised regmaps, which
was the main inspiration for some of the cleanups.
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Merge tag 'regmap-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap updates from Mark Brown:
"This has been quite a busy release for regmap, the user visible
changes are quite minor but there's some quite good work on internal
code improvements:
- Cleanup helper for __free()ing regmap_fields
- Support non-devm I3C regmaps
- A bunch of cleanup work, mostly from Andy Shevchenko
- Fix for bootstrapping issues with hardware initialised regmaps,
which was the main inspiration for some of the cleanups"
* tag 'regmap-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: i3c: Add non-devm regmap_init_i3c() helper
regmap: debugfs: fix race condition in dummy name allocation
regmap: Synchronize cache for the page selector
regmap: Simplify devres handling
regcache: Move HW readback after cache initialisation
regcache: Allocate and free reg_defaults on the same level
regcache: Move count check and cache_bypass assignment to the caller
regcache: Factor out regcache_hw_exit() helper
regcache: Amend printf() specifiers when printing registers
regcache: Define iterator inside for-loop and align their types
regmap: define cleanup helper for regmap_field
regmap: sort header includes
regcache: Split regcache_count_cacheable_registers() helper
regcache: Remove duplicate check in regcache_hw_init()
|
||
|
Linus Torvalds
|
334fbe734e |
mm.git review status for linus..mm-stable
Everything: Total patches: 368 Reviews/patch: 1.56 Reviewed rate: 74% Excluding DAMON: Total patches: 316 Reviews/patch: 1.77 Reviewed rate: 81% Excluding DAMON and zram: Total patches: 306 Reviews/patch: 1.81 Reviewed rate: 82% Excluding DAMON, zram and maple_tree: Total patches: 276 Reviews/patch: 2.01 Reviewed rate: 91% Significant patch series in this merge: - The 30 patch series "maple_tree: Replace big node with maple copy" from Liam Howlett is mainly prepararatory work for ongoing development but it does reduce stack usage and is an improvement. - The 12 patch series "mm, swap: swap table phase III: remove swap_map" from Kairui Song offers memory savings by removing the static swap_map. It also yields some CPU savings and implements several cleanups. - The 2 patch series "mm: memfd_luo: preserve file seals" from Pratyush Yadav adds file seal preservation to LUO's memfd code. - The 2 patch series "mm: zswap: add per-memcg stat for incompressible pages" from Jiayuan Chen adds additional userspace stats reportng to zswap. - The 4 patch series "arch, mm: consolidate empty_zero_page" from Mike Rapoport implements some cleanups for our handling of ZERO_PAGE() and zero_pfn. - The 2 patch series "mm/kmemleak: Improve scan_should_stop() implementation" from Zhongqiu Han provides an robustness improvement and some cleanups in the kmemleak code. - The 4 patch series "Improve khugepaged scan logic" from Vernon Yang "improves the khugepaged scan logic and reduces CPU consumption by prioritizing scanning tasks that access memory frequently". - The 2 patch series "Make KHO Stateless" from Jason Miu simplifies Kexec Handover by "transitioning KHO from an xarray-based metadata tracking system with serialization to a radix tree data structure that can be passed directly to the next kernel" - The 3 patch series "mm: vmscan: add PID and cgroup ID to vmscan tracepoints" from Thomas Ballasi and Steven Rostedt enhances vmscan's tracepointing. - The 5 patch series "mm: arch/shstk: Common shadow stack mapping helper and VM_NOHUGEPAGE" from Catalin Marinas is a cleanup for the shadow stack code: remove per-arch code in favour of a generic implementation. - The 2 patch series "Fix KASAN support for KHO restored vmalloc regions" from Pasha Tatashin fixes a WARN() which can be emitted the KHO restores a vmalloc area. - The 4 patch series "mm: Remove stray references to pagevec" from Tal Zussman provides several cleanups, mainly udpating references to "struct pagevec", which became folio_batch three years ago. - The 17 patch series "mm: Eliminate fake head pages from vmemmap optimization" from Kiryl Shutsemau simplifies the HugeTLB vmemmap optimization (HVO) by changing how tail pages encode their relationship to the head page. - The 2 patch series "mm/damon/core: improve DAMOS quota efficiency for core layer filters" from SeongJae Park improves two problematic behaviors of DAMOS that makes it less efficient when core layer filters are used. - The 3 patch series "mm/damon: strictly respect min_nr_regions" from SeongJae Park improves DAMON usability by extending the treatment of the min_nr_regions user-settable parameter. - The 3 patch series "mm/page_alloc: pcp locking cleanup" from Vlastimil Babka is a proper fix for a previously hotfixed SMP=n issue. Code simplifications and cleanups ennsed. - The 16 patch series "mm: cleanups around unmapping / zapping" from David Hildenbrand implements "a bunch of cleanups around unmapping and zapping. Mostly simplifications, code movements, documentation and renaming of zapping functions". - The 6 patch series "support batched checking of the young flag for MGLRU" from Baolin Wang supports batched checking of the young flag for MGLRU. It's part cleanups; one benchmark shows large performance benefits for arm64. - The 5 patch series "memcg: obj stock and slab stat caching cleanups" from Johannes Weiner provides memcg cleanup and robustness improvements. - The 5 patch series "Allow order zero pages in page reporting" from Yuvraj Sakshith enhances page_reporting's free page reporting - it is presently and undesirably order-0 pages when reporting free memory. - The 6 patch series "mm: vma flag tweaks" from Lorenzo Stoakes is cleanup work following from the recent conversion of the VMA flags to a bitmap. - The 10 patch series "mm/damon: add optional debugging-purpose sanity checks" from SeongJae Park adds some more developer-facing debug checks into DAMON core. - The 2 patch series "mm/damon: test and document power-of-2 min_region_sz requirement" from SeongJae Park adds an additional DAMON kunit test and makes some adjustments to the addr_unit parameter handling. - The 3 patch series "mm/damon/core: make passed_sample_intervals comparisons overflow-safe" from SeongJae Park fixes a hard-to-hit time overflow issue in DAMON core. - The 7 patch series "mm/damon: improve/fixup/update ratio calculation, test and documentation" from SeongJae Park is a "batch of misc/minor improvements and fixups" for DAMON. - The 4 patch series "mm: move vma_(kernel|mmu)_pagesize() out of hugetlb.c" from David Hildenbrand fixes a possible issue with dax-device when CONFIG_HUGETLB=n. Some code movement was required. - The 6 patch series "zram: recompression cleanups and tweaks" from Sergey Senozhatsky provides "a somewhat random mix of fixups, recompression cleanups and improvements" in the zram code. - The 11 patch series "mm/damon: support multiple goal-based quota tuning algorithms" from SeongJae Park extend DAMOS quotas goal auto-tuning to support multiple tuning algorithms that users can select. - The 4 patch series "mm: thp: reduce unnecessary start_stop_khugepaged()" from Breno Leitao fixes the khugpaged sysfs handling so we no longer spam the logs with reams of junk when starting/stopping khugepaged. - The 3 patch series "mm: improve map count checks" from Lorenzo Stoakes provides some cleanups and slight fixes in the mremap, mmap and vma code. - The 5 patch series "mm/damon: support addr_unit on default monitoring targets for modules" from SeongJae Park extends the use of DAMON core's addr_unit tunable. - The 5 patch series "mm: khugepaged cleanups and mTHP prerequisites" from Nico Pache provides cleanups in the khugepaged and is a base for Nico's planned khugepaged mTHP support. - The 15 patch series "mm: memory hot(un)plug and SPARSEMEM cleanups" from David Hildenbrand implements code movement and cleanups in the memhotplug and sparsemem code. - The 2 patch series "mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE and cleanup CONFIG_MIGRATION" from David Hildenbrand rationalizes some memhotplug Kconfig support. - The 6 patch series "change young flag check functions to return bool" from Baolin Wang is "a cleanup patchset to change all young flag check functions to return bool". - The 3 patch series "mm/damon/sysfs: fix memory leak and NULL dereference issues" from Josh Law and SeongJae Park fixes a few potential DAMON bugs. - The 25 patch series "mm/vma: convert vm_flags_t to vma_flags_t in vma code" from "converts a lot of the existing use of the legacy vm_flags_t data type to the new vma_flags_t type which replaces it". Mainly in the vma code. - The 21 patch series "mm: expand mmap_prepare functionality and usage" from Lorenzo Stoakes "expands the mmap_prepare functionality, which is intended to replace the deprecated f_op->mmap hook which has been the source of bugs and security issues for some time". Cleanups, documentation, extension of mmap_prepare into filesystem drivers. - The 13 patch series "mm/huge_memory: refactor zap_huge_pmd()" from Lorenzo Stoakes simplifies and cleans up zap_huge_pmd(). Additional cleanups around vm_normal_folio_pmd() and the softleaf functionality are performed. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCad3HDQAKCRDdBJ7gKXxA jrUQAPwNhPk5nPSxnyxjAeQtOBHqgCdnICeEismLajPKd9aYRgEA0s2XAu3tSUYi GrBnWImHG3s4ePQxVcPCegWTsOUrXgQ= =1Q7o -----END PGP SIGNATURE----- Merge tag 'mm-stable-2026-04-13-21-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: - "maple_tree: Replace big node with maple copy" (Liam Howlett) Mainly prepararatory work for ongoing development but it does reduce stack usage and is an improvement. - "mm, swap: swap table phase III: remove swap_map" (Kairui Song) Offers memory savings by removing the static swap_map. It also yields some CPU savings and implements several cleanups. - "mm: memfd_luo: preserve file seals" (Pratyush Yadav) File seal preservation to LUO's memfd code - "mm: zswap: add per-memcg stat for incompressible pages" (Jiayuan Chen) Additional userspace stats reportng to zswap - "arch, mm: consolidate empty_zero_page" (Mike Rapoport) Some cleanups for our handling of ZERO_PAGE() and zero_pfn - "mm/kmemleak: Improve scan_should_stop() implementation" (Zhongqiu Han) A robustness improvement and some cleanups in the kmemleak code - "Improve khugepaged scan logic" (Vernon Yang) Improve khugepaged scan logic and reduce CPU consumption by prioritizing scanning tasks that access memory frequently - "Make KHO Stateless" (Jason Miu) Simplify Kexec Handover by transitioning KHO from an xarray-based metadata tracking system with serialization to a radix tree data structure that can be passed directly to the next kernel - "mm: vmscan: add PID and cgroup ID to vmscan tracepoints" (Thomas Ballasi and Steven Rostedt) Enhance vmscan's tracepointing - "mm: arch/shstk: Common shadow stack mapping helper and VM_NOHUGEPAGE" (Catalin Marinas) Cleanup for the shadow stack code: remove per-arch code in favour of a generic implementation - "Fix KASAN support for KHO restored vmalloc regions" (Pasha Tatashin) Fix a WARN() which can be emitted the KHO restores a vmalloc area - "mm: Remove stray references to pagevec" (Tal Zussman) Several cleanups, mainly udpating references to "struct pagevec", which became folio_batch three years ago - "mm: Eliminate fake head pages from vmemmap optimization" (Kiryl Shutsemau) Simplify the HugeTLB vmemmap optimization (HVO) by changing how tail pages encode their relationship to the head page - "mm/damon/core: improve DAMOS quota efficiency for core layer filters" (SeongJae Park) Improve two problematic behaviors of DAMOS that makes it less efficient when core layer filters are used - "mm/damon: strictly respect min_nr_regions" (SeongJae Park) Improve DAMON usability by extending the treatment of the min_nr_regions user-settable parameter - "mm/page_alloc: pcp locking cleanup" (Vlastimil Babka) The proper fix for a previously hotfixed SMP=n issue. Code simplifications and cleanups ensued - "mm: cleanups around unmapping / zapping" (David Hildenbrand) A bunch of cleanups around unmapping and zapping. Mostly simplifications, code movements, documentation and renaming of zapping functions - "support batched checking of the young flag for MGLRU" (Baolin Wang) Batched checking of the young flag for MGLRU. It's part cleanups; one benchmark shows large performance benefits for arm64 - "memcg: obj stock and slab stat caching cleanups" (Johannes Weiner) memcg cleanup and robustness improvements - "Allow order zero pages in page reporting" (Yuvraj Sakshith) Enhance free page reporting - it is presently and undesirably order-0 pages when reporting free memory. - "mm: vma flag tweaks" (Lorenzo Stoakes) Cleanup work following from the recent conversion of the VMA flags to a bitmap - "mm/damon: add optional debugging-purpose sanity checks" (SeongJae Park) Add some more developer-facing debug checks into DAMON core - "mm/damon: test and document power-of-2 min_region_sz requirement" (SeongJae Park) An additional DAMON kunit test and makes some adjustments to the addr_unit parameter handling - "mm/damon/core: make passed_sample_intervals comparisons overflow-safe" (SeongJae Park) Fix a hard-to-hit time overflow issue in DAMON core - "mm/damon: improve/fixup/update ratio calculation, test and documentation" (SeongJae Park) A batch of misc/minor improvements and fixups for DAMON - "mm: move vma_(kernel|mmu)_pagesize() out of hugetlb.c" (David Hildenbrand) Fix a possible issue with dax-device when CONFIG_HUGETLB=n. Some code movement was required. - "zram: recompression cleanups and tweaks" (Sergey Senozhatsky) A somewhat random mix of fixups, recompression cleanups and improvements in the zram code - "mm/damon: support multiple goal-based quota tuning algorithms" (SeongJae Park) Extend DAMOS quotas goal auto-tuning to support multiple tuning algorithms that users can select - "mm: thp: reduce unnecessary start_stop_khugepaged()" (Breno Leitao) Fix the khugpaged sysfs handling so we no longer spam the logs with reams of junk when starting/stopping khugepaged - "mm: improve map count checks" (Lorenzo Stoakes) Provide some cleanups and slight fixes in the mremap, mmap and vma code - "mm/damon: support addr_unit on default monitoring targets for modules" (SeongJae Park) Extend the use of DAMON core's addr_unit tunable - "mm: khugepaged cleanups and mTHP prerequisites" (Nico Pache) Cleanups to khugepaged and is a base for Nico's planned khugepaged mTHP support - "mm: memory hot(un)plug and SPARSEMEM cleanups" (David Hildenbrand) Code movement and cleanups in the memhotplug and sparsemem code - "mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE and cleanup CONFIG_MIGRATION" (David Hildenbrand) Rationalize some memhotplug Kconfig support - "change young flag check functions to return bool" (Baolin Wang) Cleanups to change all young flag check functions to return bool - "mm/damon/sysfs: fix memory leak and NULL dereference issues" (Josh Law and SeongJae Park) Fix a few potential DAMON bugs - "mm/vma: convert vm_flags_t to vma_flags_t in vma code" (Lorenzo Stoakes) Convert a lot of the existing use of the legacy vm_flags_t data type to the new vma_flags_t type which replaces it. Mainly in the vma code. - "mm: expand mmap_prepare functionality and usage" (Lorenzo Stoakes) Expand the mmap_prepare functionality, which is intended to replace the deprecated f_op->mmap hook which has been the source of bugs and security issues for some time. Cleanups, documentation, extension of mmap_prepare into filesystem drivers - "mm/huge_memory: refactor zap_huge_pmd()" (Lorenzo Stoakes) Simplify and clean up zap_huge_pmd(). Additional cleanups around vm_normal_folio_pmd() and the softleaf functionality are performed. * tag 'mm-stable-2026-04-13-21-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (369 commits) mm: fix deferred split queue races during migration mm/khugepaged: fix issue with tracking lock mm/huge_memory: add and use has_deposited_pgtable() mm/huge_memory: add and use normal_or_softleaf_folio_pmd() mm: add softleaf_is_valid_pmd_entry(), pmd_to_softleaf_folio() mm/huge_memory: separate out the folio part of zap_huge_pmd() mm/huge_memory: use mm instead of tlb->mm mm/huge_memory: remove unnecessary sanity checks mm/huge_memory: deduplicate zap deposited table call mm/huge_memory: remove unnecessary VM_BUG_ON_PAGE() mm/huge_memory: add a common exit path to zap_huge_pmd() mm/huge_memory: handle buggy PMD entry in zap_huge_pmd() mm/huge_memory: have zap_huge_pmd return a boolean, add kdoc mm/huge: avoid big else branch in zap_huge_pmd() mm/huge_memory: simplify vma_is_specal_huge() mm: on remap assert that input range within the proposed VMA mm: add mmap_action_map_kernel_pages[_full]() uio: replace deprecated mmap hook with mmap_prepare in uio_info drivers: hv: vmbus: replace deprecated mmap hook with mmap_prepare mm: allow handling of stacked mmap_prepare hooks in more drivers ... |
||
|
Linus Torvalds
|
4a57e0913e |
drm for v7.1-rc1
mm: - two pass MMU interval notifiers - add gpu active/reclaim per-node stat counters math: - provide __KERNEL_DIV_ROUND_CLOSEST() in UAPI - implement DIV_ROUND_CLOSEST() with __KERNEL_DIV_ROUND_CLOSEST() rust: - shared tag with driver-core: register macro and io infra - core: rework DMA coherent API - core: add interop::list to interop with C linked lists - core: add more num::Bounded operations - core: enable generic_arg_infer and add EMSGSIZE - workqueue: add ARef<T> support for work and delayed work - add GPU buddy allocator abstraction - add DRM shmem GEM helper abstraction - allow drm:::Device to dispatch work and delayed work items to driver private data - add dma_resv_lock helper and raw accessors core: - introduce DRM RAS infrastructure over netlink - add connector panel_type property - fourcc: add ARM interleaved 64k modifier - colorop: add destroy helper - suballoc: split into alloc and init helpers - mode: provide DRM_ARGB_GET*() macros for reading color components edid: - provide drm_output_color_Format dma-buf: - provide revoke mechanism for shared buffers - rename move_notify to invalidate_mappings - always enable move_notify - protect dma_fence_ops with RCU and improve locking - clean pages with helpers atomic: - allocate drm_private_state via callback - helper: use system_percpu_wq buddy: - make buddy allocator available to gpu level - add kernel-doc for buddy allocator - improve aligned allocation ttm: - fix fence signalling - improve tests and docs - improve handling of gfp_retry_mayfail - use per-node stat counters to track memory allocations - port pool to use list_lru - drop NUMA specific pools - make pool shrinker numa aware - track allocated pages per numa node coreboot: - cleanup coreboot framebuffer support sched: - fix race condition in drm_sched_fini pagemap: - enable THP support - pass pagemap_addr by reference gem-shmem: - Track page accessed/dirty status across mmap/vmap gpusvm: - reenable device to device migration - fix unbalanced unclock bridge: - anx7625: Support USB-C plus DT bindings - connector: Fix EDID detection - dw-hdmi-qp: Support Vendor-Specfic and SDP Infoframes; improve others - fsl-ldb: Fix visual artifacts plus related DT property 'enable-termination-resistor' - imx8qxp-pixel-link: Improve bridge reference handling - lt9611: Support Port-B-only input plus DT bindings - tda998x: Support DRM_BRIDGE_ATTACH_NO_CONNECTOR; Clean up - Support TH1520 HDMI plus DT bindings - waveshare-dsi: Fix register and attach; Support 1..4 DSI lanes plus DT bindings - anx7625: Fix USB Type-C handling - cdns-mhdp8546-core: Handle HDCP state in bridge atomic_check - Support Lontium LT8713SX DP MST bridge plus DT bindings - analogix_dp: Use DP helpers for link training panel: - panel-jdi-lt070me05000: Use mipi-dsi multi functions - panel-edp: Support Add AUO B116XAT04.1 (HW: 1A); Support CMN N116BCL-EAK (C2); Support FriendlyELEC plus DT changes - panel-edp: Fix timings for BOE NV140WUM-N64 - ilitek-ili9882t: Allow GPIO calls to sleep - jadard: Support TAIGUAN XTI05101-01A - lxd: Support LXD M9189A plus DT bindings - mantix: Fix pixel clock; Clean up - motorola: Support Motorola Atrix 4G and Droid X2 plus DT bindings - novatek: Support Novatek/Tianma NT37700F plus DT bindings - simple: Support EDT ET057023UDBA plus DT bindings; Support Powertip PH800480T032-ZHC19 plus DT bindings; Support Waveshare 13.3" - novatek-nt36672a: Use mipi_dsi_*_multi() functions - panel-edp: Support BOE NV153WUM-N42, CMN N153JCA-ELK, CSW MNF307QS3-2 - support Himax HX83121A plus DT bindings - support JuTouch JT070TM041 plus DT bindings - support Samsung S6E8FC0 plus DT bindings - himax-hx83102c: support Samsung S6E8FC0 plus DT bindings; support backlight - ili9806e: support Rocktech RK050HR345-CT106A plus DT bindings - simple: support Tianma TM050RDH03 plus DT bindings amdgpu: - enable DC by default on CIK APUs - userq fence ioctl param size fixes - set panel_type to OLED for eDP - refactor DC i2c code - FAMS2 update - rework ttm handling to allow multiple engines - DC DCE 6.x cleanup - DC support for NUTMEG/TRAVIS DP bridge - DCN 4.2 support - GC12 idle power fix for compute - use struct drm_edid in non-DC code - enable NV12/P010 support on primary planes - support newer IP discovery tables - VCN/JPEG 5.0.2 support - GC/MES 12.1 updates - USERQ fixes - add DC idle state manager - eDP DSC seamless boot amdkfd: - GC 12.1 updates - non 4K page fixes xe: - basic Xe3p_LPG and NVL-P enabling patches - allow VM_BIND decompress support - add purgeable buffer object support - add xe_vm_get_property_ioctl - restrict multi-lrc to VCS/VECS engines - allow disabling VM overcommit in fault mode - dGPU memory optimizations - Workaround cleanups and simplification - Allow VFs VRAM quote changes using sysfs - convert GT stats to per-cpu counters - pagefault refactors - enable multi-queue on xe3p_xpc - disable DCC on PTL - make MMIO communication more robust - disable D3Cold for BMG on specific platforms - vfio: improve FLR sync for Xe VFIO i915/display: - C10/C20/LT PHY PLL divider verification - use trans push mechanism to generate PSR frame change on LNL+ - refactor DP DSC slice config - VGA decode refactoring - refactor DPT, gen2-4 overlay, masked field register macro helpers - refactor stolen memory allocation decisions - prepare for UHBR DP tunnels - refactor LT PHY PLL to use DPLL framework - implement register polling/waiting in display code - add shared stepping header between i915 and display i915: - fix potential overflow of shmem scatterlist length nouveau: - provide Z cull info to userspace - initial GA100 support - shutdown on PCI device shutdown nova-core: - harden GSP command queue - add support for large RPCs - simplify GSP sequencer and message handling - refactor falcon firmware handling - convert to new register macro - conver to new DMA coherent API - use checked arithmetic - add debugfs support for gsp-rm log buffers - fix aux device registration for multi-GPU msm: - CI: - Uprev mesa - Restore CI jobs for Qualcomm APQ8016 and APQ8096 devices - Core: - Switched to of_get_available_child_by_name() - DPU: - Fixes for DSC panels - Fixed brownout because of the frequency / OPP mismatch - Quad pipe preparation (not enabled yet) - Switched to virtual planes by default - Dropped VBIF_NRT support - Added support for Eliza platform - Reworked alpha handling - Switched to correct CWB definitions on Eliza - Dropped dummy INTF_0 on MSM8953 - Corrected INTFs related to DP-MST - DP: - Removed debug prints looking into PHY internals - DSI: - Fixes for DSC panels - RGB101010 support - Support for SC8280XP - Moved PHY bindings from display/ to phy/ - GPU: - Preemption support for x2-85 and a840 - IFPC support for a840 - SKU detection support for x2-85 and a840 - Expose AQE support (VK ray-pipeline) - Avoid locking in VM_BIND fence signaling path - Fix to avoid reclaim in GPU snapshot path - Disallow foreign mapping of _NO_SHARE BOs - HDMI: - Fixed infoframes programming - MDP5: - Dropped support for MSM8974v1 - Dropped now unused code for MSM8974 v1 and SDM660 / MSM8998 panthor: - add tracepoints for power and IRQs - fix fence handling - extend timestamp query with flags - support various sources for timestamp queries tyr: - fix names and model/versions rockchip: - vop2: use drm logging function - rk3576 displayport support - support CRTC background color atmel-hlcdc: - support sana5d65 LCD controller tilcdc: - use DT bindings schema - use managed DRM interfaces - support DRM_BRIDGE_ATTACH_NO_CONNECTOR verisilicon: - support DC8200 + DT bindings virtgpu: - support PRIME import with 3D enabled komeda: - fix integer overflow in AFBC checks mcde: - improve bridge handling gma500: - use drm client buffer for fbdev framebuffer amdxdna: - add sensors ioctls - provide NPU power estimate - support column utilization sensor - allow forcing DMA through IOMMU IOVA - support per-BO mem usage queries - refactor GEM implementation ivpu: - update boot API to v3.29.4 - limit per-user number of doorbells/contexts - perform engine reset on TDR error loongson: - replace custom code with drm_gem_ttm_dumb_map_offset() imx: - support planes behind the primary plane - fix bus-format selection vkms: - support CRTC background color v3d: - improve handling of struct v3d_stats komeda: - support Arm China Linlon D6 plus DT bindings imagination: - improve power-off sequence - support context-reset notification from firmware mediatek: - mtk_dsi: enable hs clock during pre-enable - Remove all conflicting aperture devices during probe - Add support for mt8167 display blocks -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEEKbZHaGwW9KfbeusDHTzWXnEhr4FAmnfMHMACgkQDHTzWXnE hr4gEg/+Oaf6KBcvqNKPLwDlNeOvHap1n8oiy7SXvOKN2/KEAu/zGpEciJ7GsSge qdqY4xhEfp0JZLrTZiIIzFr38uzkanfOLdF2AQCVrfCRhlO7QLiUDxAAdDZUyINe kKLvNunxMwhzwsmRHEDL85cgPkhsxt2ux+tUOYZrEQ/ZbdupNrFw9q5ewmuYzGng HY8bsnB0jVwQ9IU/X6h+Xzr/19623/CZyUWJSuY1foKMhHMceyrCmpAFEqjFWn71 7zNYFlPEQtqa6qtIZXVbJB4mhd7NbmMW6s367xx+Sx+UJDDNfS6ku+hpISwxNuVX 7fOoEkhQ+ynIcxGkfOi5Q9j2/mV/WL/GEA/IUWfmX8l219WOrKY4w0NtCE4C78r7 QFGUR6w8Vi97FCP8NuA7Kix4J9eSr/FAzqoG0snAOQbVdaTSBr1hL0PeewD8BRry PUkCCh6J7jKA6POt4JZeU6mbJ3AMoOwS9BICi10R1R6EnIKNpKGVpAuYHk4B5+u3 X5vd1ds+8dJN/etaFYgIbirUocKx6zt9rT5i4/wPZIDPoCgZNofePtPCiJoTcnNN PUZUngcWLpftwW+kCUdc4lF1Q7nguQpXVpX0WJiSfqejshUTPXHPlmJV81GoNSHo fQMUXIjO5cAX0FKPBakSxxwFnOQFq4aZb6kRBt4lYgt+RJfzo3s= =GX7Q -----END PGP SIGNATURE----- Merge tag 'drm-next-2026-04-15' of https://gitlab.freedesktop.org/drm/kernel Pull drm updates from Dave Airlie: "Highlights: - new DRM RAS infrastructure using netlink - amdgpu: enable DC on CIK APUs, and more IP enablement, and more user queue work - xe: purgeable BO support, and new hw enablement - dma-buf : add revocable operations Full summary: mm: - two-pass MMU interval notifiers - add gpu active/reclaim per-node stat counters math: - provide __KERNEL_DIV_ROUND_CLOSEST() in UAPI - implement DIV_ROUND_CLOSEST() with __KERNEL_DIV_ROUND_CLOSEST() rust: - shared tag with driver-core: register macro and io infra - core: rework DMA coherent API - core: add interop::list to interop with C linked lists - core: add more num::Bounded operations - core: enable generic_arg_infer and add EMSGSIZE - workqueue: add ARef<T> support for work and delayed work - add GPU buddy allocator abstraction - add DRM shmem GEM helper abstraction - allow drm:::Device to dispatch work and delayed work items to driver private data - add dma_resv_lock helper and raw accessors core: - introduce DRM RAS infrastructure over netlink - add connector panel_type property - fourcc: add ARM interleaved 64k modifier - colorop: add destroy helper - suballoc: split into alloc and init helpers - mode: provide DRM_ARGB_GET*() macros for reading color components edid: - provide drm_output_color_Format dma-buf: - provide revoke mechanism for shared buffers - rename move_notify to invalidate_mappings - always enable move_notify - protect dma_fence_ops with RCU and improve locking - clean pages with helpers atomic: - allocate drm_private_state via callback - helper: use system_percpu_wq buddy: - make buddy allocator available to gpu level - add kernel-doc for buddy allocator - improve aligned allocation ttm: - fix fence signalling - improve tests and docs - improve handling of gfp_retry_mayfail - use per-node stat counters to track memory allocations - port pool to use list_lru - drop NUMA specific pools - make pool shrinker numa aware - track allocated pages per numa node coreboot: - cleanup coreboot framebuffer support sched: - fix race condition in drm_sched_fini pagemap: - enable THP support - pass pagemap_addr by reference gem-shmem: - Track page accessed/dirty status across mmap/vmap gpusvm: - reenable device to device migration - fix unbalanced unclock bridge: - anx7625: Support USB-C plus DT bindings - connector: Fix EDID detection - dw-hdmi-qp: Support Vendor-Specfic and SDP Infoframes; improve others - fsl-ldb: Fix visual artifacts plus related DT property 'enable-termination-resistor' - imx8qxp-pixel-link: Improve bridge reference handling - lt9611: Support Port-B-only input plus DT bindings - tda998x: Support DRM_BRIDGE_ATTACH_NO_CONNECTOR; Clean up - Support TH1520 HDMI plus DT bindings - waveshare-dsi: Fix register and attach; Support 1..4 DSI lanes plus DT bindings - anx7625: Fix USB Type-C handling - cdns-mhdp8546-core: Handle HDCP state in bridge atomic_check - Support Lontium LT8713SX DP MST bridge plus DT bindings - analogix_dp: Use DP helpers for link training panel: - panel-jdi-lt070me05000: Use mipi-dsi multi functions - panel-edp: Support Add AUO B116XAT04.1 (HW: 1A); Support CMN N116BCL-EAK (C2); Support FriendlyELEC plus DT changes - panel-edp: Fix timings for BOE NV140WUM-N64 - ilitek-ili9882t: Allow GPIO calls to sleep - jadard: Support TAIGUAN XTI05101-01A - lxd: Support LXD M9189A plus DT bindings - mantix: Fix pixel clock; Clean up - motorola: Support Motorola Atrix 4G and Droid X2 plus DT bindings - novatek: Support Novatek/Tianma NT37700F plus DT bindings - simple: Support EDT ET057023UDBA plus DT bindings; Support Powertip PH800480T032-ZHC19 plus DT bindings; Support Waveshare 13.3" - novatek-nt36672a: Use mipi_dsi_*_multi() functions - panel-edp: Support BOE NV153WUM-N42, CMN N153JCA-ELK, CSW MNF307QS3-2 - support Himax HX83121A plus DT bindings - support JuTouch JT070TM041 plus DT bindings - support Samsung S6E8FC0 plus DT bindings - himax-hx83102c: support Samsung S6E8FC0 plus DT bindings; support backlight - ili9806e: support Rocktech RK050HR345-CT106A plus DT bindings - simple: support Tianma TM050RDH03 plus DT bindings amdgpu: - enable DC by default on CIK APUs - userq fence ioctl param size fixes - set panel_type to OLED for eDP - refactor DC i2c code - FAMS2 update - rework ttm handling to allow multiple engines - DC DCE 6.x cleanup - DC support for NUTMEG/TRAVIS DP bridge - DCN 4.2 support - GC12 idle power fix for compute - use struct drm_edid in non-DC code - enable NV12/P010 support on primary planes - support newer IP discovery tables - VCN/JPEG 5.0.2 support - GC/MES 12.1 updates - USERQ fixes - add DC idle state manager - eDP DSC seamless boot amdkfd: - GC 12.1 updates - non 4K page fixes xe: - basic Xe3p_LPG and NVL-P enabling patches - allow VM_BIND decompress support - add purgeable buffer object support - add xe_vm_get_property_ioctl - restrict multi-lrc to VCS/VECS engines - allow disabling VM overcommit in fault mode - dGPU memory optimizations - Workaround cleanups and simplification - Allow VFs VRAM quote changes using sysfs - convert GT stats to per-cpu counters - pagefault refactors - enable multi-queue on xe3p_xpc - disable DCC on PTL - make MMIO communication more robust - disable D3Cold for BMG on specific platforms - vfio: improve FLR sync for Xe VFIO i915/display: - C10/C20/LT PHY PLL divider verification - use trans push mechanism to generate PSR frame change on LNL+ - refactor DP DSC slice config - VGA decode refactoring - refactor DPT, gen2-4 overlay, masked field register macro helpers - refactor stolen memory allocation decisions - prepare for UHBR DP tunnels - refactor LT PHY PLL to use DPLL framework - implement register polling/waiting in display code - add shared stepping header between i915 and display i915: - fix potential overflow of shmem scatterlist length nouveau: - provide Z cull info to userspace - initial GA100 support - shutdown on PCI device shutdown nova-core: - harden GSP command queue - add support for large RPCs - simplify GSP sequencer and message handling - refactor falcon firmware handling - convert to new register macro - conver to new DMA coherent API - use checked arithmetic - add debugfs support for gsp-rm log buffers - fix aux device registration for multi-GPU msm: - CI: - Uprev mesa - Restore CI jobs for Qualcomm APQ8016 and APQ8096 devices - Core: - Switched to of_get_available_child_by_name() - DPU: - Fixes for DSC panels - Fixed brownout because of the frequency / OPP mismatch - Quad pipe preparation (not enabled yet) - Switched to virtual planes by default - Dropped VBIF_NRT support - Added support for Eliza platform - Reworked alpha handling - Switched to correct CWB definitions on Eliza - Dropped dummy INTF_0 on MSM8953 - Corrected INTFs related to DP-MST - DP: - Removed debug prints looking into PHY internals - DSI: - Fixes for DSC panels - RGB101010 support - Support for SC8280XP - Moved PHY bindings from display/ to phy/ - GPU: - Preemption support for x2-85 and a840 - IFPC support for a840 - SKU detection support for x2-85 and a840 - Expose AQE support (VK ray-pipeline) - Avoid locking in VM_BIND fence signaling path - Fix to avoid reclaim in GPU snapshot path - Disallow foreign mapping of _NO_SHARE BOs - HDMI: - Fixed infoframes programming - MDP5: - Dropped support for MSM8974v1 - Dropped now unused code for MSM8974 v1 and SDM660 / MSM8998 panthor: - add tracepoints for power and IRQs - fix fence handling - extend timestamp query with flags - support various sources for timestamp queries tyr: - fix names and model/versions rockchip: - vop2: use drm logging function - rk3576 displayport support - support CRTC background color atmel-hlcdc: - support sana5d65 LCD controller tilcdc: - use DT bindings schema - use managed DRM interfaces - support DRM_BRIDGE_ATTACH_NO_CONNECTOR verisilicon: - support DC8200 + DT bindings virtgpu: - support PRIME import with 3D enabled komeda: - fix integer overflow in AFBC checks mcde: - improve bridge handling gma500: - use drm client buffer for fbdev framebuffer amdxdna: - add sensors ioctls - provide NPU power estimate - support column utilization sensor - allow forcing DMA through IOMMU IOVA - support per-BO mem usage queries - refactor GEM implementation ivpu: - update boot API to v3.29.4 - limit per-user number of doorbells/contexts - perform engine reset on TDR error loongson: - replace custom code with drm_gem_ttm_dumb_map_offset() imx: - support planes behind the primary plane - fix bus-format selection vkms: - support CRTC background color v3d: - improve handling of struct v3d_stats komeda: - support Arm China Linlon D6 plus DT bindings imagination: - improve power-off sequence - support context-reset notification from firmware mediatek: - mtk_dsi: enable hs clock during pre-enable - Remove all conflicting aperture devices during probe - Add support for mt8167 display blocks" * tag 'drm-next-2026-04-15' of https://gitlab.freedesktop.org/drm/kernel: (1735 commits) drm/ttm/tests: Remove checks from ttm_pool_free_no_dma_alloc drm/ttm/tests: fix lru_count ASSERT drm/vram: remove DRM_VRAM_MM_FILE_OPERATIONS from docs drm/fb-helper: Fix a locking bug in an error path dma-fence: correct kernel-doc function parameter @flags ttm/pool: track allocated_pages per numa node. ttm/pool: make pool shrinker NUMA aware (v2) ttm/pool: drop numa specific pools ttm/pool: port to list_lru. (v2) drm/ttm: use gpu mm stats to track gpu memory allocations. (v4) mm: add gpu active/reclaim per-node stat counters (v2) gpu: nova-core: fix missing colon in SEC2 boot debug message gpu: nova-core: vbios: use from_le_bytes() for PCI ROM header parsing gpu: nova-core: bitfield: fix broken Default implementation gpu: nova-core: falcon: pad firmware DMA object size to required block alignment gpu: nova-core: gsp: fix undefined behavior in command queue code drm/shmem_helper: Make sure PMD entries get the writeable upgrade accel/ivpu: Trigger recovery on TDR with OS scheduling drm/msm: Use of_get_available_child_by_name() dt-bindings: display/msm: move DSI PHY bindings to phy/ subdir ... |
||
|
Linus Torvalds
|
91a4855d6c |
Networking changes for 7.1.
Core & protocols
----------------
- Support HW queue leasing, allowing containers to be granted access
to HW queues for zero-copy operations and AF_XDP.
- Number of code moves to help the compiler with inlining.
Avoid output arguments for returning drop reason where possible.
- Rework drop handling within qdiscs to include more metadata
about the reason and dropping qdisc in the tracepoints.
- Remove the rtnl_lock use from IP Multicast Routing.
- Pack size information into the Rx Flow Steering table pointer
itself. This allows making the table itself a flat array of u32s,
thus making the table allocation size a power of two.
- Report TCP delayed ack timer information via socket diag.
- Add ip_local_port_step_width sysctl to allow distributing the randomly
selected ports more evenly throughout the allowed space.
- Add support for per-route tunsrc in IPv6 segment routing.
- Start work of switching sockopt handling to iov_iter.
- Improve dynamic recvbuf sizing in MPTCP, limit burstiness and avoid
buffer size drifting up.
- Support MSG_EOR in MPTCP.
- Add stp_mode attribute to the bridge driver for STP mode selection.
This addresses concerns about call_usermodehelper() usage.
- Remove UDP-Lite support (as announced in 2023).
- Remove support for building IPv6 as a module.
Remove the now unnecessary function calling indirection.
Cross-tree stuff
----------------
- Move Michael MIC code from generic crypto into wireless,
it's considered insecure but some WiFi networks still need it.
Netfilter
---------
- Switch nft_fib_ipv6 module to no longer need temporary dst_entry
object allocations by using fib6_lookup() + RCU.
Florian W reports this gets us ~13% higher packet rate.
- Convert IPVS's global __ip_vs_mutex to per-net service_mutex and
switch the service tables to be per-net. Convert some code that
walks the service lists to use RCU instead of the service_mutex.
- Add more opinionated input validation to lower security exposure.
- Make IPVS hash tables to be per-netns and resizable.
Wireless
--------
- Finished assoc frame encryption/EPPKE/802.1X-over-auth.
- Radar detection improvements.
- Add 6 GHz incumbent signal detection APIs.
- Multi-link support for FILS, probe response templates and
client probing.
- New APIs and mac80211 support for NAN (Neighbor Aware Networking,
aka Wi-Fi Aware) so less work must be in firmware.
Driver API
----------
- Add numerical ID for devlink instances (to avoid having to create
fake bus/device pairs just to have an ID). Support shared devlink
instances which span multiple PFs.
- Add standard counters for reporting pause storm events
(implement in mlx5 and fbnic).
- Add configuration API for completion writeback buffering
(implement in mana).
- Support driver-initiated change of RSS context sizes.
- Support DPLL monitoring input frequency (implement in zl3073x).
- Support per-port resources in devlink (implement in mlx5).
Misc
----
- Expand the YAML spec for Netfilter.
Drivers
-------
- Software:
- macvlan: support multicast rx for bridge ports with shared source
MAC address
- team: decouple receive and transmit enablement for IEEE 802.3ad
LACP "independent control"
- Ethernet high-speed NICs:
- nVidia/Mellanox:
- support high order pages in zero-copy mode (for payload
coalescing)
- support multiple packets in a page (for systems with 64kB pages)
- Broadcom 25-400GE (bnxt):
- implement XDP RSS hash metadata extraction
- add software fallback for UDP GSO, lowering the IOMMU cost
- Broadcom 800GE (bnge):
- add link status and configuration handling
- add various HW and SW statistics
- Marvell/Cavium:
- NPC HW block support for cn20k
- Huawei (hinic3):
- add mailbox / control queue
- add rx VLAN offload
- add driver info and link management
- Ethernet NICs:
- Marvell/Aquantia:
- support reading SFP module info on some AQC100 cards
- Realtek PCI (r8169):
- add support for RTL8125cp
- Realtek USB (r8152):
- support for the RTL8157 5Gbit chip
- add 2500baseT EEE status/configuration support
- Ethernet NICs embedded and off-the-shelf IP:
- Synopsys (stmmac):
- cleanup and reorganize SerDes handling and PCS support
- cleanup descriptor handling and per-platform data
- cleanup and consolidate MDIO defines and handling
- shrink driver memory use for internal structures
- improve Tx IRQ coalescing
- improve TCP segmentation handling
- add support for Spacemit K3
- Cadence (macb):
- support PHYs that have inband autoneg disabled with GEM
- support IEEE 802.3az EEE
- rework usrio capabilities and handling
- AMD (xgbe):
- improve power management for S0i3
- improve TX resilience for link-down handling
- Virtual:
- Google cloud vNIC:
- support larger ring sizes in DQO-QPL mode
- improve HW-GRO handling
- support UDP GSO for DQO format
- PCIe NTB:
- support queue count configuration
- Ethernet PHYs:
- automatically disable PHY autonomous EEE if MAC is in charge
- Broadcom:
- add BCM84891/BCM84892 support
- Micrel:
- support for LAN9645X internal PHY
- Realtek:
- add RTL8224 pair order support
- support PHY LEDs on RTL8211F-VD
- support spread spectrum clocking (SSC)
- Maxlinear:
- add PHY-level statistics via ethtool
- Ethernet switches:
- Maxlinear (mxl862xx):
- support for bridge offloading
- support for VLANs
- support driver statistics
- Bluetooth:
- large number of fixes and new device IDs
- Mediatek:
- support MT6639 (MT7927)
- support MT7902 SDIO
- WiFi:
- Intel (iwlwifi):
- UNII-9 and continuing UHR work
- MediaTek (mt76):
- mt7996/mt7925 MLO fixes/improvements
- mt7996 NPU support (HW eth/wifi traffic offload)
- Qualcomm (ath12k):
- monitor mode support on IPQ5332
- basic hwmon temperature reporting
- support IPQ5424
- Realtek:
- add USB RX aggregation to improve performance
- add USB TX flow control by tracking in-flight URBs
- Cellular:
- IPA v5.2 support
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
"Core & protocols:
- Support HW queue leasing, allowing containers to be granted access
to HW queues for zero-copy operations and AF_XDP
- Number of code moves to help the compiler with inlining. Avoid
output arguments for returning drop reason where possible
- Rework drop handling within qdiscs to include more metadata about
the reason and dropping qdisc in the tracepoints
- Remove the rtnl_lock use from IP Multicast Routing
- Pack size information into the Rx Flow Steering table pointer
itself. This allows making the table itself a flat array of u32s,
thus making the table allocation size a power of two
- Report TCP delayed ack timer information via socket diag
- Add ip_local_port_step_width sysctl to allow distributing the
randomly selected ports more evenly throughout the allowed space
- Add support for per-route tunsrc in IPv6 segment routing
- Start work of switching sockopt handling to iov_iter
- Improve dynamic recvbuf sizing in MPTCP, limit burstiness and avoid
buffer size drifting up
- Support MSG_EOR in MPTCP
- Add stp_mode attribute to the bridge driver for STP mode selection.
This addresses concerns about call_usermodehelper() usage
- Remove UDP-Lite support (as announced in 2023)
- Remove support for building IPv6 as a module. Remove the now
unnecessary function calling indirection
Cross-tree stuff:
- Move Michael MIC code from generic crypto into wireless, it's
considered insecure but some WiFi networks still need it
Netfilter:
- Switch nft_fib_ipv6 module to no longer need temporary dst_entry
object allocations by using fib6_lookup() + RCU.
Florian W reports this gets us ~13% higher packet rate
- Convert IPVS's global __ip_vs_mutex to per-net service_mutex and
switch the service tables to be per-net. Convert some code that
walks the service lists to use RCU instead of the service_mutex
- Add more opinionated input validation to lower security exposure
- Make IPVS hash tables to be per-netns and resizable
Wireless:
- Finished assoc frame encryption/EPPKE/802.1X-over-auth
- Radar detection improvements
- Add 6 GHz incumbent signal detection APIs
- Multi-link support for FILS, probe response templates and client
probing
- New APIs and mac80211 support for NAN (Neighbor Aware Networking,
aka Wi-Fi Aware) so less work must be in firmware
Driver API:
- Add numerical ID for devlink instances (to avoid having to create
fake bus/device pairs just to have an ID). Support shared devlink
instances which span multiple PFs
- Add standard counters for reporting pause storm events (implement
in mlx5 and fbnic)
- Add configuration API for completion writeback buffering (implement
in mana)
- Support driver-initiated change of RSS context sizes
- Support DPLL monitoring input frequency (implement in zl3073x)
- Support per-port resources in devlink (implement in mlx5)
Misc:
- Expand the YAML spec for Netfilter
Drivers
- Software:
- macvlan: support multicast rx for bridge ports with shared
source MAC address
- team: decouple receive and transmit enablement for IEEE 802.3ad
LACP "independent control"
- Ethernet high-speed NICs:
- nVidia/Mellanox:
- support high order pages in zero-copy mode (for payload
coalescing)
- support multiple packets in a page (for systems with 64kB
pages)
- Broadcom 25-400GE (bnxt):
- implement XDP RSS hash metadata extraction
- add software fallback for UDP GSO, lowering the IOMMU cost
- Broadcom 800GE (bnge):
- add link status and configuration handling
- add various HW and SW statistics
- Marvell/Cavium:
- NPC HW block support for cn20k
- Huawei (hinic3):
- add mailbox / control queue
- add rx VLAN offload
- add driver info and link management
- Ethernet NICs:
- Marvell/Aquantia:
- support reading SFP module info on some AQC100 cards
- Realtek PCI (r8169):
- add support for RTL8125cp
- Realtek USB (r8152):
- support for the RTL8157 5Gbit chip
- add 2500baseT EEE status/configuration support
- Ethernet NICs embedded and off-the-shelf IP:
- Synopsys (stmmac):
- cleanup and reorganize SerDes handling and PCS support
- cleanup descriptor handling and per-platform data
- cleanup and consolidate MDIO defines and handling
- shrink driver memory use for internal structures
- improve Tx IRQ coalescing
- improve TCP segmentation handling
- add support for Spacemit K3
- Cadence (macb):
- support PHYs that have inband autoneg disabled with GEM
- support IEEE 802.3az EEE
- rework usrio capabilities and handling
- AMD (xgbe):
- improve power management for S0i3
- improve TX resilience for link-down handling
- Virtual:
- Google cloud vNIC:
- support larger ring sizes in DQO-QPL mode
- improve HW-GRO handling
- support UDP GSO for DQO format
- PCIe NTB:
- support queue count configuration
- Ethernet PHYs:
- automatically disable PHY autonomous EEE if MAC is in charge
- Broadcom:
- add BCM84891/BCM84892 support
- Micrel:
- support for LAN9645X internal PHY
- Realtek:
- add RTL8224 pair order support
- support PHY LEDs on RTL8211F-VD
- support spread spectrum clocking (SSC)
- Maxlinear:
- add PHY-level statistics via ethtool
- Ethernet switches:
- Maxlinear (mxl862xx):
- support for bridge offloading
- support for VLANs
- support driver statistics
- Bluetooth:
- large number of fixes and new device IDs
- Mediatek:
- support MT6639 (MT7927)
- support MT7902 SDIO
- WiFi:
- Intel (iwlwifi):
- UNII-9 and continuing UHR work
- MediaTek (mt76):
- mt7996/mt7925 MLO fixes/improvements
- mt7996 NPU support (HW eth/wifi traffic offload)
- Qualcomm (ath12k):
- monitor mode support on IPQ5332
- basic hwmon temperature reporting
- support IPQ5424
- Realtek:
- add USB RX aggregation to improve performance
- add USB TX flow control by tracking in-flight URBs
- Cellular:
- IPA v5.2 support"
* tag 'net-next-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1561 commits)
net: pse-pd: fix kernel-doc function name for pse_control_find_by_id()
wireguard: device: use exit_rtnl callback instead of manual rtnl_lock in pre_exit
wireguard: allowedips: remove redundant space
tools: ynl: add sample for wireguard
wireguard: allowedips: Use kfree_rcu() instead of call_rcu()
MAINTAINERS: Add netkit selftest files
selftests/net: Add additional test coverage in nk_qlease
selftests/net: Split netdevsim tests from HW tests in nk_qlease
tools/ynl: Make YnlFamily closeable as a context manager
net: airoha: Add missing PPE configurations in airoha_ppe_hw_init()
net: airoha: Fix VIP configuration for AN7583 SoC
net: caif: clear client service pointer on teardown
net: strparser: fix skb_head leak in strp_abort_strp()
net: usb: cdc-phonet: fix skb frags[] overflow in rx_complete()
selftests/bpf: add test for xdp_master_redirect with bond not up
net, bpf: fix null-ptr-deref in xdp_master_redirect() for down master
net: airoha: Remove PCE_MC_EN_MASK bit in REG_FE_PCE_CFG configuration
sctp: disable BH before calling udp_tunnel_xmit_skb()
sctp: fix missing encap_port propagation for GSO fragments
net: airoha: Rely on net_device pointer in ETS callbacks
...
|
||
|
Linus Torvalds
|
fbfb6bd927 |
Thermal control updates for 7.1-rc1
- Fix thermal core issues related to thermal zone removal and
registration errors that may lead to a use-after-free or a memory
leak in some cases (Rafael Wysocki)
- Drop a redundant check from thermal_zone_device_update(), adjust
thermal workqueue allocation flags, and switch over thermal_class
allocation to static (Rafael Wysocki)
- Relocate the suspend and resume of thermal zones closer to the
suspend and resume of devices, respectively (Rafael Wysocki)
- Remove a pointless variable used in the thermal core when
registering a cooling device (Daniel Lezcano)
- Replace sprintf() in thermal_bind_cdev_to_trip() and use
str_enabled_disabled() helper in mode_show() (Thorsten Blum)
- Replace cpumask_weight() in intel_hfi_offline() with cpumask_empty()
which is generally more efficient (Yury Norov)
- Add support for reading DDR data rate from PCI config space on Nova
Lake platforms to the int340x thermal driver (Srinivas Pandruvada)
- Add an OF node address to output message to make sensor names more
distinguishable (Alexander Stein)
- Add hwmon support for the i.MX97 thermal sensor (Alexander Stein)
- Clamp correctly the results when doing value/temperature conversion
in the Spreadtrum driver (Thorsten Blum)
- Add SDM670 compatible DT bindings for the Tsens and the lMH thermal
drivers (Richard Acayan)
- Add SM8750 compatible DT bindings for the Tsens thermal driver (Manaf
Meethalavalappu Pallikunhi)
- Add Eliza SoC compatible DT bindings for the Tsens driver (Krzysztof
Kozlowski)
- Fix inverted condition check on error in the Spear thermal control
driver (Gopi Krishna Menon)
- Convert DT bindings documentation into DT schema (Gopi Krishna Menon)
- Use max() macro to increase readability in the Broadcom STB thermal
sensor (Thorsten Blum)
- Remove a stale @trim_offset kernel-doc entry (John Madieu)
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Merge tag 'thermal-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull thermal control updates from Rafael Wysocki:
"These include thermal core fixes and simplifications, driver fixes and
new hardware support (SDM670, Eliza SoC), new driver features (hwmon
support in imx91, DDR data rate on Nova Lake in int340x), and a
handful of cleanups:
- Fix thermal core issues related to thermal zone removal and
registration errors that may lead to a use-after-free or a memory
leak in some cases (Rafael Wysocki)
- Drop a redundant check from thermal_zone_device_update(), adjust
thermal workqueue allocation flags, and switch over thermal_class
allocation to static (Rafael Wysocki)
- Relocate the suspend and resume of thermal zones closer to the
suspend and resume of devices, respectively (Rafael Wysocki)
- Remove a pointless variable used in the thermal core when
registering a cooling device (Daniel Lezcano)
- Replace sprintf() in thermal_bind_cdev_to_trip() and use
str_enabled_disabled() helper in mode_show() (Thorsten Blum)
- Replace cpumask_weight() in intel_hfi_offline() with
cpumask_empty() which is generally more efficient (Yury Norov)
- Add support for reading DDR data rate from PCI config space on Nova
Lake platforms to the int340x thermal driver (Srinivas Pandruvada)
- Add an OF node address to output message to make sensor names more
distinguishable (Alexander Stein)
- Add hwmon support for the i.MX97 thermal sensor (Alexander Stein)
- Clamp correctly the results when doing value/temperature conversion
in the Spreadtrum driver (Thorsten Blum)
- Add SDM670 compatible DT bindings for the Tsens and the lMH thermal
drivers (Richard Acayan)
- Add SM8750 compatible DT bindings for the Tsens thermal driver
(Manaf Meethalavalappu Pallikunhi)
- Add Eliza SoC compatible DT bindings for the Tsens driver
(Krzysztof Kozlowski)
- Fix inverted condition check on error in the Spear thermal control
driver (Gopi Krishna Menon)
- Convert DT bindings documentation into DT schema (Gopi Krishna
Menon)
- Use max() macro to increase readability in the Broadcom STB thermal
sensor (Thorsten Blum)
- Remove a stale @trim_offset kernel-doc entry (John Madieu)"
* tag 'thermal-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (25 commits)
thermal: renesas: rzg3e: Remove stale @trim_offset kernel-doc entry
thermal: core: Suspend thermal zones later and resume them earlier
thermal: core: Allocate thermal_class statically
thermal: core: Adjust thermal_wq allocation flags
thermal: core: Drop redundant check from thermal_zone_device_update()
thermal: core: Free thermal zone ID later during removal
thermal: core: Fix thermal zone governor cleanup issues
thermal/core: Remove pointless variable when registering a cooling device
thermal/drivers/brcmstb_thermal: Use max to simplify brcmstb_get_temp
dt-bindings: thermal: st,thermal-spear1340: convert to dtschema
thermal/drivers/spear: Fix error condition for reading st,thermal-flags
dt-bindings: thermal: qcom-tsens: Add Eliza SoC TSENS
thermal: devfreq_cooling: avoid unnecessary kfree of freq_table
thermal: intel: hfi: use cpumask_empty() in intel_hfi_offline()
thermal: sysfs: Use str_enabled_disabled() helper in mode_show()
dt-bindings: thermal: qcom-tsens: Document the SM8750 Temperature Sensor
thermal/drivers/sprd: Use min instead of clamp in sprd_thm_temp_to_rawdata
dt-bindings: thermal: lmh: Add SDM670 compatible
dt-bindings: thermal: tsens: add SDM670 compatible
thermal/drivers/sprd: Fix raw temperature clamping in sprd_thm_rawdata_to_temp
...
|
||
|
Linus Torvalds
|
2e31b16101 |
ACPI support updates for 7.1-rc1
- Update maintainers information regarding ACPICA (Rafael Wysocki)
- Replace strncpy() with strscpy_pad() in acpi_ut_safe_strncpy() (Kees
Cook)
- Trigger an ordered system power off after encountering a fatal error
operator in AML (Armin Wolf)
- Enable ACPI FPDT parsing on LoongArch (Xi Ruoyao)
- Remove the temporary stop-gap acpi_pptt_cache_v1_full structure from
the ACPI PPTT parser (Ben Horgan)
- Add support for exposing ACPI FPDT subtables FBPT and S3PT (Nate
DeSimone)
- Address multiple assorted issues and clean up the code in the ACPI
processor idle driver (Huisong Li)
- Replace strlcat() in the ACPI processor idle drive with a better
alternative (Andy Shevchenko)
- Rearrange and clean up acpi_processor_errata_piix4() (Rafael Wysocki)
- Move reference performance to capabilities and fix an uninitialized
variable in the ACPI CPPC library (Pengjie Zhang)
- Add support for the Performance Limited Register to the ACPI CPPC
library (Sumit Gupta)
- Add cppc_get_perf() API to read performance controls, extend
cppc_set_epp_perf() for FFH/SystemMemory, and make the ACPI CPPC
library warn on missing mandatory DESIRED_PERF register (Sumit Gupta)
- Modify the cpufreq CPPC driver to update MIN_PERF/MAX_PERF in target
callbacks to allow it to control performance bounds via standard
scaling_min_freq and scaling_max_freq sysfs attributes and add sysfs
documentation for the Performance Limited Register to it (Sumit Gupta)
- Add ACPI support to the platform device interface in the CMOS RTC
driver, make the ACPI core device enumeration code create a platform
device for the CMOS RTC, and drop CMOS RTC PNP device support (Rafael
Wysocki)
- Consolidate the x86-specific CMOS RTC handling with the ACPI TAD
driver and clean up the CMOS RTC ACPI address space handler (Rafael
Wysocki)
- Enable ACPI alarm in the CMOS RTC driver if advertised in ACPI FADT
and allow that driver to work without a dedicated IRQ if the ACPI
alarm is used (Rafael Wysocki)
- Clean up the ACPI TAD driver in various ways and add an RTC class
device interface, including both the RTC setting/reading and alarm
timer support, to it (Rafael Wysocki)
- Clean up the ACPI AC and ACPI PAD (processor aggregator device)
drivers (Rafael Wysocki)
- Rework checking for duplicate video bus devices and consolidate
pnp.bus_id workarounds handling in the ACPI video bus driver (Rafael
Wysocki)
- Update the ACPI core device drivers to stop setting acpi_device_name()
unnecessarily (Rafael Wysocki)
- Rearrange code using acpi_device_class() in the ACPI core device
drivers and update them to stop setting acpi_device_class()
unnecessarily (Rafael Wysocki)
- Define ACPI_AC_CLASS in one place (Rafael Wysocki)
- Convert the ni903x_wdt watchdog driver and the xen ACPI PAD driver to
bind to platform devices instead of ACPI devices (Rafael Wysocki)
- Add devm_ghes_register_vendor_record_notifier(), use it in the PCI
hisi driver, and Add NVIDIA vendor CPER record handler (Kai-Heng
Feng)
- Consolidate the interface for obtaining a CPU UID from ACPI across
architectures and use it to address incorrect PCI TPH Steering Tag
on ARM64 resulting from the invalid assumption that the ACPI
Processor UID would always be the same as the corresponding logical
CPU ID in Linux (Chengwen Feng)
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Merge tag 'acpi-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI support updates from Rafael Wysocki:
"These include an update of the CMOS RTC driver and the related ACPI
and x86 code that, among other things, switches it over to using the
platform device interface for device binding on x86 instead of the PNP
device driver interface (which allows the code in question to be
simplified quite a bit), a major update of the ACPI Time and Alarm
Device (TAD) driver adding an RTC class device interface to it, and
updates of core ACPI drivers that remove some unnecessary and not
really useful code from them.
Apart from that, two drivers are converted to using the platform
driver interface for device binding instead of the ACPI driver one,
which is slated for removal, support for the Performance Limited
register is added to the ACPI CPPC library and there are some
janitorial updates of it and the related cpufreq CPPC driver, the ACPI
processor driver is fixed and cleaned up, and NVIDIA vendor CPER
record handler is added to the APEI GHES code.
Also, the interface for obtaining a CPU UID from ACPI is consolidated
across architectures and used for fixing a problem with the PCI TPH
Steering Tag on ARM64, there are two updates related to ACPICA, a
minor ACPI OS Services Layer (OSL) update, and a few assorted updates
related to ACPI tables parsing.
Specifics:
- Update maintainers information regarding ACPICA (Rafael Wysocki)
- Replace strncpy() with strscpy_pad() in acpi_ut_safe_strncpy()
(Kees Cook)
- Trigger an ordered system power off after encountering a fatal
error operator in AML (Armin Wolf)
- Enable ACPI FPDT parsing on LoongArch (Xi Ruoyao)
- Remove the temporary stop-gap acpi_pptt_cache_v1_full structure
from the ACPI PPTT parser (Ben Horgan)
- Add support for exposing ACPI FPDT subtables FBPT and S3PT (Nate
DeSimone)
- Address multiple assorted issues and clean up the code in the ACPI
processor idle driver (Huisong Li)
- Replace strlcat() in the ACPI processor idle drive with a better
alternative (Andy Shevchenko)
- Rearrange and clean up acpi_processor_errata_piix4() (Rafael
Wysocki)
- Move reference performance to capabilities and fix an uninitialized
variable in the ACPI CPPC library (Pengjie Zhang)
- Add support for the Performance Limited Register to the ACPI CPPC
library (Sumit Gupta)
- Add cppc_get_perf() API to read performance controls, extend
cppc_set_epp_perf() for FFH/SystemMemory, and make the ACPI CPPC
library warn on missing mandatory DESIRED_PERF register (Sumit
Gupta)
- Modify the cpufreq CPPC driver to update MIN_PERF/MAX_PERF in
target callbacks to allow it to control performance bounds via
standard scaling_min_freq and scaling_max_freq sysfs attributes and
add sysfs documentation for the Performance Limited Register to it
(Sumit Gupta)
- Add ACPI support to the platform device interface in the CMOS RTC
driver, make the ACPI core device enumeration code create a
platform device for the CMOS RTC, and drop CMOS RTC PNP device
support (Rafael Wysocki)
- Consolidate the x86-specific CMOS RTC handling with the ACPI TAD
driver and clean up the CMOS RTC ACPI address space handler (Rafael
Wysocki)
- Enable ACPI alarm in the CMOS RTC driver if advertised in ACPI FADT
and allow that driver to work without a dedicated IRQ if the ACPI
alarm is used (Rafael Wysocki)
- Clean up the ACPI TAD driver in various ways and add an RTC class
device interface, including both the RTC setting/reading and alarm
timer support, to it (Rafael Wysocki)
- Clean up the ACPI AC and ACPI PAD (processor aggregator device)
drivers (Rafael Wysocki)
- Rework checking for duplicate video bus devices and consolidate
pnp.bus_id workarounds handling in the ACPI video bus driver
(Rafael Wysocki)
- Update the ACPI core device drivers to stop setting
acpi_device_name() unnecessarily (Rafael Wysocki)
- Rearrange code using acpi_device_class() in the ACPI core device
drivers and update them to stop setting acpi_device_class()
unnecessarily (Rafael Wysocki)
- Define ACPI_AC_CLASS in one place (Rafael Wysocki)
- Convert the ni903x_wdt watchdog driver and the xen ACPI PAD driver
to bind to platform devices instead of ACPI devices (Rafael
Wysocki)
- Add devm_ghes_register_vendor_record_notifier(), use it in the PCI
hisi driver, and Add NVIDIA vendor CPER record handler (Kai-Heng
Feng)
- Consolidate the interface for obtaining a CPU UID from ACPI across
architectures and use it to address incorrect PCI TPH Steering Tag
on ARM64 resulting from the invalid assumption that the ACPI
Processor UID would always be the same as the corresponding logical
CPU ID in Linux (Chengwen Feng)"
* tag 'acpi-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (73 commits)
ACPICA: Update maintainers information
watchdog: ni903x_wdt: Convert to a platform driver
ACPI: PAD: xen: Convert to a platform driver
ACPI: processor: idle: Reset cpuidle on C-state list changes
cpuidle: Extract and export no-lock variants of cpuidle_unregister_device()
PCI/TPH: Pass ACPI Processor UID to Cache Locality _DSM
ACPI: PPTT: Use acpi_get_cpu_uid() and remove get_acpi_id_for_cpu()
perf: arm_cspmu: Switch to acpi_get_cpu_uid() from get_acpi_id_for_cpu()
ACPI: Centralize acpi_get_cpu_uid() declaration in include/linux/acpi.h
x86/acpi: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval
RISC-V: ACPI: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval
LoongArch: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval
arm64: acpi: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval
ACPI: APEI: GHES: Add NVIDIA vendor CPER record handler
PCI: hisi: Use devm_ghes_register_vendor_record_notifier()
ACPI: APEI: GHES: Add devm_ghes_register_vendor_record_notifier()
ACPI: tables: Enable FPDT on LoongArch
ACPI: processor: idle: Fix NULL pointer dereference in hotplug path
ACPI: processor: idle: Reset power_setup_done flag on initialization failure
ACPI: TAD: Add alarm support to the RTC class device interface
...
|
||
|
Linus Torvalds
|
4793dae01f |
Driver core changes for 7.1-rc1
- debugfs:
- Fix NULL pointer dereference in debugfs_create_str()
- Fix misplaced EXPORT_SYMBOL_GPL for debugfs_create_str()
- Fix soundwire debugfs NULL pointer dereference from uninitialized
firmware_file
- device property:
- Make fwnode flags modifications thread safe; widen the field to
unsigned long and use set_bit() / clear_bit() based accessors
- Document how to check for the property presence
- devres:
- Separate struct devres_node from its "subclasses" (struct devres,
struct devres_group); give struct devres_node its own release and
free callbacks for per-type dispatch
- Introduce struct devres_action for devres actions, avoiding the
ARCH_DMA_MINALIGN alignment overhead of struct devres
- Export struct devres_node and its init/add/remove/dbginfo
primitives for use by Rust Devres<T>
- Fix missing node debug info in devm_krealloc()
- Use guard(spinlock_irqsave) where applicable; consolidate unlock
paths in devres_release_group()
- driver_override:
- Convert PCI, WMI, vdpa, s390/cio, s390/ap, and fsl-mc to the
generic driver_override infrastructure, replacing per-bus
driver_override strings, sysfs attributes, and match logic; fixes
a potential UAF from unsynchronized access to driver_override in
bus match() callbacks
- Simplify __device_set_driver_override() logic
- kernfs:
- Send IN_DELETE_SELF and IN_IGNORED inotify events on kernfs
file and directory removal
- Add corresponding selftests for memcg
- platform:
- Allow attaching software nodes when creating platform devices via
a new 'swnode' field in struct platform_device_info
- Add kerneldoc for struct platform_device_info
- software node:
- Move software node initialization from postcore_initcall() to
driver_init(), making it available early in the boot process
- Move kernel_kobj initialization (ksysfs_init) earlier to support
the above
- Remove software_node_exit(); dead code in a built-in unit
- SoC:
- Introduce of_machine_read_compatible() and of_machine_read_model()
OF helpers and export soc_attr_read_machine() to replace direct
accesses to of_root from SoC drivers; also enables
CONFIG_COMPILE_TEST coverage for these drivers
- sysfs:
- Constify attribute group array pointers to
'const struct attribute_group *const *' in sysfs functions,
device_add_groups() / device_remove_groups(), and struct class
- Rust:
- Devres:
- Embed struct devres_node directly in Devres<T> instead of going
through devm_add_action(), avoiding the extra allocation and
the unnecessary ARCH_DMA_MINALIGN alignment
- I/O:
- Turn IoCapable from a marker trait into a functional trait
carrying the raw I/O accessor implementation (io_read /
io_write), providing working defaults for the per-type Io
methods
- Add RelaxedMmio wrapper type, making relaxed accessors usable
in code generic over the Io trait
- Remove overloaded per-type Io methods and per-backend macros
from Mmio and PCI ConfigSpace
- I/O (Register):
- Add IoLoc trait and generic read/write/update methods to the Io
trait, making I/O operations parameterizable by typed locations
- Add register! macro for defining hardware register types with
typed bitfield accessors backed by Bounded values; supports
direct, relative, and array register addressing
- Add write_reg() / try_write_reg() and LocatedRegister trait
- Update PCI sample driver to demonstrate the register! macro
Example:
```
register! {
/// UART control register.
CTRL(u32) @ 0x18 {
/// Receiver enable.
19:19 rx_enable => bool;
/// Parity configuration.
14:13 parity ?=> Parity;
}
/// FIFO watermark and counter register.
WATER(u32) @ 0x2c {
/// Number of datawords in the receive FIFO.
26:24 rx_count;
/// RX interrupt threshold.
17:16 rx_water;
}
}
impl WATER {
fn rx_above_watermark(&self) -> bool {
self.rx_count() > self.rx_water()
}
}
fn init(bar: &pci::Bar<BAR0_SIZE>) {
let water = WATER::zeroed()
.with_const_rx_water::<1>(); // > 3 would not compile
bar.write_reg(water);
let ctrl = CTRL::zeroed()
.with_parity(Parity::Even)
.with_rx_enable(true);
bar.write_reg(ctrl);
}
fn handle_rx(bar: &pci::Bar<BAR0_SIZE>) {
if bar.read(WATER).rx_above_watermark() {
// drain the FIFO
}
}
fn set_parity(bar: &pci::Bar<BAR0_SIZE>, parity: Parity) {
bar.update(CTRL, |r| r.with_parity(parity));
}
```
- IRQ:
- Move 'static bounds from where clauses to trait declarations
for IRQ handler traits
- Misc:
- Enable the generic_arg_infer Rust feature
- Extend Bounded with shift operations, single-bit bool conversion,
and const get()
- Misc:
- Make deferred_probe_timeout default a Kconfig option
- Drop auxiliary_dev_pm_ops; the PM core falls back to driver PM
callbacks when no bus type PM ops are set
- Add conditional guard support for device_lock()
- Add ksysfs.c to the DRIVER CORE MAINTAINERS entry
- Fix kernel-doc warnings in base.h
- Fix stale reference to memory_block_add_nid() in documentation
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Merge tag 'driver-core-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core
Pull driver core updates from Danilo Krummrich:
"debugfs:
- Fix NULL pointer dereference in debugfs_create_str()
- Fix misplaced EXPORT_SYMBOL_GPL for debugfs_create_str()
- Fix soundwire debugfs NULL pointer dereference from uninitialized
firmware_file
device property:
- Make fwnode flags modifications thread safe; widen the field to
unsigned long and use set_bit() / clear_bit() based accessors
- Document how to check for the property presence
devres:
- Separate struct devres_node from its "subclasses" (struct devres,
struct devres_group); give struct devres_node its own release and
free callbacks for per-type dispatch
- Introduce struct devres_action for devres actions, avoiding the
ARCH_DMA_MINALIGN alignment overhead of struct devres
- Export struct devres_node and its init/add/remove/dbginfo
primitives for use by Rust Devres<T>
- Fix missing node debug info in devm_krealloc()
- Use guard(spinlock_irqsave) where applicable; consolidate unlock
paths in devres_release_group()
driver_override:
- Convert PCI, WMI, vdpa, s390/cio, s390/ap, and fsl-mc to the
generic driver_override infrastructure, replacing per-bus
driver_override strings, sysfs attributes, and match logic; fixes a
potential UAF from unsynchronized access to driver_override in bus
match() callbacks
- Simplify __device_set_driver_override() logic
kernfs:
- Send IN_DELETE_SELF and IN_IGNORED inotify events on kernfs file
and directory removal
- Add corresponding selftests for memcg
platform:
- Allow attaching software nodes when creating platform devices via a
new 'swnode' field in struct platform_device_info
- Add kerneldoc for struct platform_device_info
software node:
- Move software node initialization from postcore_initcall() to
driver_init(), making it available early in the boot process
- Move kernel_kobj initialization (ksysfs_init) earlier to support
the above
- Remove software_node_exit(); dead code in a built-in unit
SoC:
- Introduce of_machine_read_compatible() and of_machine_read_model()
OF helpers and export soc_attr_read_machine() to replace direct
accesses to of_root from SoC drivers; also enables
CONFIG_COMPILE_TEST coverage for these drivers
sysfs:
- Constify attribute group array pointers to
'const struct attribute_group *const *' in sysfs functions,
device_add_groups() / device_remove_groups(), and struct class
Rust:
- Devres:
- Embed struct devres_node directly in Devres<T> instead of going
through devm_add_action(), avoiding the extra allocation and the
unnecessary ARCH_DMA_MINALIGN alignment
- I/O:
- Turn IoCapable from a marker trait into a functional trait
carrying the raw I/O accessor implementation (io_read /
io_write), providing working defaults for the per-type Io
methods
- Add RelaxedMmio wrapper type, making relaxed accessors usable in
code generic over the Io trait
- Remove overloaded per-type Io methods and per-backend macros
from Mmio and PCI ConfigSpace
- I/O (Register):
- Add IoLoc trait and generic read/write/update methods to the Io
trait, making I/O operations parameterizable by typed locations
- Add register! macro for defining hardware register types with
typed bitfield accessors backed by Bounded values; supports
direct, relative, and array register addressing
- Add write_reg() / try_write_reg() and LocatedRegister trait
- Update PCI sample driver to demonstrate the register! macro
Example:
```
register! {
/// UART control register.
CTRL(u32) @ 0x18 {
/// Receiver enable.
19:19 rx_enable => bool;
/// Parity configuration.
14:13 parity ?=> Parity;
}
/// FIFO watermark and counter register.
WATER(u32) @ 0x2c {
/// Number of datawords in the receive FIFO.
26:24 rx_count;
/// RX interrupt threshold.
17:16 rx_water;
}
}
impl WATER {
fn rx_above_watermark(&self) -> bool {
self.rx_count() > self.rx_water()
}
}
fn init(bar: &pci::Bar<BAR0_SIZE>) {
let water = WATER::zeroed()
.with_const_rx_water::<1>(); // > 3 would not compile
bar.write_reg(water);
let ctrl = CTRL::zeroed()
.with_parity(Parity::Even)
.with_rx_enable(true);
bar.write_reg(ctrl);
}
fn handle_rx(bar: &pci::Bar<BAR0_SIZE>) {
if bar.read(WATER).rx_above_watermark() {
// drain the FIFO
}
}
fn set_parity(bar: &pci::Bar<BAR0_SIZE>, parity: Parity) {
bar.update(CTRL, |r| r.with_parity(parity));
}
```
- IRQ:
- Move 'static bounds from where clauses to trait declarations for
IRQ handler traits
- Misc:
- Enable the generic_arg_infer Rust feature
- Extend Bounded with shift operations, single-bit bool
conversion, and const get()
Misc:
- Make deferred_probe_timeout default a Kconfig option
- Drop auxiliary_dev_pm_ops; the PM core falls back to driver PM
callbacks when no bus type PM ops are set
- Add conditional guard support for device_lock()
- Add ksysfs.c to the DRIVER CORE MAINTAINERS entry
- Fix kernel-doc warnings in base.h
- Fix stale reference to memory_block_add_nid() in documentation"
* tag 'driver-core-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (67 commits)
bus: fsl-mc: use generic driver_override infrastructure
s390/ap: use generic driver_override infrastructure
s390/cio: use generic driver_override infrastructure
vdpa: use generic driver_override infrastructure
platform/wmi: use generic driver_override infrastructure
PCI: use generic driver_override infrastructure
driver core: make software nodes available earlier
software node: remove software_node_exit()
kernel: ksysfs: initialize kernel_kobj earlier
MAINTAINERS: add ksysfs.c to the DRIVER CORE entry
drivers/base/memory: fix stale reference to memory_block_add_nid()
device property: Document how to check for the property presence
soundwire: debugfs: initialize firmware_file to empty string
debugfs: fix placement of EXPORT_SYMBOL_GPL for debugfs_create_str()
debugfs: check for NULL pointer in debugfs_create_str()
driver core: Make deferred_probe_timeout default a Kconfig option
driver core: simplify __device_set_driver_override() clearing logic
driver core: auxiliary bus: Drop auxiliary_dev_pm_ops
device property: Make modifications of fwnode "flags" thread safe
rust: devres: embed struct devres_node directly
...
|
||
|
Nishanth Sampath Kumar
|
bad4bd28ab
|
regmap-i2c: add SMBus byte/word reg16 bus for adapters lacking I2C_FUNC_I2C
AMD PIIX4 SMBus adapters, present on AMD SP5/EPYC-based platforms
(including Cisco 8000 series routers), support SMBUS_BYTE_DATA and
SMBUS_WORD_DATA but lack I2C_FUNC_I2C and I2C_FUNC_SMBUS_I2C_BLOCK.
When at24 (or any driver) requests a regmap with reg_bits=16 and
val_bits=8 on such an adapter, regmap_get_i2c_bus() finds no matching
bus and returns -ENOTSUPP. The existing regmap_i2c_smbus_i2c_block_reg16
bus type already implements 16-bit addressed reads using only
write_byte_data() + read_byte() primitives, but its selection is gated
on I2C_FUNC_SMBUS_I2C_BLOCK which these adapters lack.
Add a new regmap_smbus_byte_word_reg16 bus that:
READ: reuses regmap_i2c_smbus_i2c_read_reg16() -- sets the 16-bit
address via write_byte_data(addr_lo, addr_hi), then reads
bytes sequentially via read_byte() (EEPROM auto-increments).
Requires only SMBUS_BYTE_DATA.
WRITE: uses write_word_data(addr_hi, (data << 8) | addr_lo) to
encode one data byte per SMBus WORD transaction.
Requires only SMBUS_WORD_DATA. Single-byte writes only.
The new bus is selected in regmap_get_i2c_bus() when reg_bits=16,
val_bits=8, and the adapter has SMBUS_BYTE_DATA | SMBUS_WORD_DATA but
not I2C_FUNC_I2C or SMBUS_I2C_BLOCK. The branch is placed after the
existing I2C_BLOCK_reg16 check so adapters with full block support
continue to use the faster path.
This fixes at24 EEPROM probe failures on PIIX4:
at24 3-0055: probe with driver at24 failed with error -524
No driver changes are required -- at24 already passes reg_bits=16 to
devm_regmap_init_i2c(), which now succeeds.
Signed-off-by: Nishanth Sampath Kumar <nissampa@cisco.com>
Link: https://patch.msgid.link/20260407233927.498932-1-nissampa@cisco.com
Signed-off-by: Mark Brown <broonie@kernel.org>
|
||
|
Bartosz Golaszewski
|
8f4c13c267 |
software node: return -ENOTCONN when referenced swnode is not registered yet
It's possible that at the time of resolving a reference to a remote software node, the node we know exists is not yet registered as a full firmware node. We currently return -ENOENT in this case but the same error code is also returned in some other cases, like the reference property with given name not existing in the property list of the local software node. It makes sense to let users know that we're dealing with an unregistered software node so that they can defer probe - the situation is somewhat similar to there existing a firmware node to which no device is bound yet - which is valid grounds for probe deferral. To that end: use -ENOTCONN to indicate the software node is "not connected". Acked-by: Andy Shevchenko <andy@kernel.org> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com> Link: https://patch.msgid.link/20260407-swnode-unreg-retcode-v4-1-1b2f0725eb9c@oss.qualcomm.com [ Drop software node backend specifics from fwnode_property_get_reference_args() documentation. - Danilo ] Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
||
|
Douglas Anderson
|
a2225b6e83 |
driver core: Don't let a device probe until it's ready
The moment we link a "struct device" into the list of devices for the
bus, it's possible probe can happen. This is because another thread
can load the driver at any time and that can cause the device to
probe. This has been seen in practice with a stack crawl that looks
like this [1]:
really_probe()
__driver_probe_device()
driver_probe_device()
__driver_attach()
bus_for_each_dev()
driver_attach()
bus_add_driver()
driver_register()
__platform_driver_register()
init_module() [some module]
do_one_initcall()
do_init_module()
load_module()
__arm64_sys_finit_module()
invoke_syscall()
As a result of the above, it was seen that device_links_driver_bound()
could be called for the device before "dev->fwnode->dev" was
assigned. This prevented __fw_devlink_pickup_dangling_consumers() from
being called which meant that other devices waiting on our driver's
sub-nodes were stuck deferring forever.
It's believed that this problem is showing up suddenly for two
reasons:
1. Android has recently (last ~1 year) implemented an optimization to
the order it loads modules [2]. When devices opt-in to this faster
loading, modules are loaded one-after-the-other very quickly. This
is unlike how other distributions do it. The reproduction of this
problem has only been seen on devices that opt-in to Android's
"parallel module loading".
2. Android devices typically opt-in to fw_devlink, and the most
noticeable issue is the NULL "dev->fwnode->dev" in
device_links_driver_bound(). fw_devlink is somewhat new code and
also not in use by all Linux devices.
Even though the specific symptom where "dev->fwnode->dev" wasn't
assigned could be fixed by moving that assignment higher in
device_add(), other parts of device_add() (like the call to
device_pm_add()) are also important to run before probe. Only moving
the "dev->fwnode->dev" assignment would likely fix the current
symptoms but lead to difficult-to-debug problems in the future.
Fix the problem by preventing probe until device_add() has run far
enough that the device is ready to probe. If somehow we end up trying
to probe before we're allowed, __driver_probe_device() will return
-EPROBE_DEFER which will make certain the device is noticed.
In the race condition that was seen with Android's faster module
loading, we will temporarily add the device to the deferred list and
then take it off immediately when device_add() probes the device.
Instead of adding another flag to the bitfields already in "struct
device", instead add a new "flags" field and use that. This allows us
to freely change the bit from different thread without worrying about
corrupting nearby bits (and means threads changing other bit won't
corrupt us).
[1] Captured on a machine running a downstream 6.6 kernel
[2] https://cs.android.com/android/platform/superproject/main/+/main:system/core/libmodprobe/libmodprobe.cpp?q=LoadModulesParallel
Cc: stable@vger.kernel.org
Fixes:
|
||
|
Pei Xiao
|
8ad7f3b265
|
regmap: i3c: Add non-devm regmap_init_i3c() helper
Add __regmap_init_i3c() and the corresponding regmap_init_i3c() macro to allow creating a regmap for I3C devices without using the device-managed version. This mirrors the pattern already established for other buses such as I2C, SPI and so on, giving drivers more flexibility when the regmap lifetime is not directly tied to the device. Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn> Link: https://patch.msgid.link/a81256a8866b163979a20406abf01df7d7440104.1775788105.git.xiaopei01@kylinos.cn Signed-off-by: Mark Brown <broonie@kernel.org> |
||
|
Rafael J. Wysocki
|
2fb9ec386f |
Merge branch 'acpi-driver'
Merge ACPI core driver core driver updates and assorted driver updates related to ACPI support for 7.1-rc1: - Clean up the ACPI AC and ACPI PAD (processor aggregator device) drivers (Rafael Wysocki) - Rework checking for duplicate video bus devices and consolidate pnp.bus_id workarounds handling in the ACPI video bus driver (Rafael Wysocki) - Update the ACPI core device drivers to stop setting acpi_device_name() unnecessarily (Rafael Wysocki) - Rearrange code using acpi_device_class() in the ACPI core device drivers and update them to stop setting acpi_device_class() unnecessarily (Rafael Wysocki) - Define ACPI_AC_CLASS in one place (Rafael Wysocki) - Convert the ni903x_wdt watchdog driver and the xen ACPI PAD driver to bind to platform devices instead of ACPI devices (Rafael Wysocki) * acpi-driver: watchdog: ni903x_wdt: Convert to a platform driver ACPI: PAD: xen: Convert to a platform driver ACPI: AC: Define ACPI_AC_CLASS in one place ACPI: driver: Do not set acpi_device_class() unnecessarily ACPI: driver: Avoid using pnp.device_class for netlink handling ACPI: event: Redefine acpi_notifier_call_chain() ACPI: driver: Do not set acpi_device_name() unnecessarily ACPI: video: Consolidate pnp.bus_id workarounds handling ACPI: video: Rework checking for duplicate video bus devices driver core: auxiliary bus: Introduce dev_is_auxiliary() ACPI: PAD: Rearrange notify handler installation and removal ACPI: AC: Get rid of unnecessary declarations |
||
|
Zxyan Zhu
|
7d696210cf
|
regmap: debugfs: fix race condition in dummy name allocation
Use IDA instead of a simple counter for generating unique dummy names. The previous implementation used dummy_index++ which is not atomic, leading to potential duplicate names when multiple threads call regmap_debugfs_init() concurrently with name="dummy". Signed-off-by: Zxyan Zhu <zxyan0222@gmail.com> Link: https://patch.msgid.link/20260409035015.950764-1-zxyan0222@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org> |
||
|
Christian Brauner
|
e3b2cf6e5d |
kernfs: pass struct ns_common instead of const void * for namespace tags
kernfs has historically used const void * to pass around namespace tags used for directory-level namespace filtering. The only current user of this is sysfs network namespace tagging where struct net pointers are cast to void *. Replace all const void * namespace parameters with const struct ns_common * throughout the kernfs, sysfs, and kobject namespace layers. This includes the kobj_ns_type_operations callbacks, kobject_namespace(), and all sysfs/kernfs APIs that accept or return namespace tags. Passing struct ns_common is needed because various codepaths require access to the underlying namespace. A struct ns_common can always be converted back to the concrete namespace type (e.g., struct net) via container_of() or to_ns_common() in the reverse direction. This is a preparatory change for switching to ns_id-based directory iteration to prevent a KASLR pointer leak through the current use of raw namespace pointers as hash seeds and comparison keys. Signed-off-by: Christian Brauner <brauner@kernel.org> |
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|
Rafael J. Wysocki
|
d33e89d122 |
thermal: core: Suspend thermal zones later and resume them earlier
To avoid some undesirable interactions between thermal zone suspend and resume with user space that is running when those operations are carried out, move them closer to the suspend and resume of devices, respectively, by updating dpm_prepare() to carry out thermal zone suspend and dpm_complete() to start thermal zone resume (that will continue asynchronously). This also makes the code easier to follow by removing one, arguably redundant, level of indirection represented by the thermal PM notifier. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Armin Wolf <W_Armin@gmx.de> Link: https://patch.msgid.link/2036875.PYKUYFuaPT@rafael.j.wysocki |
||
|
Dave Airlie
|
2232ba9c79 |
mm: add gpu active/reclaim per-node stat counters (v2)
While discussing memcg intergration with gpu memory allocations, it was pointed out that there was no numa/system counters for GPU memory allocations. With more integrated memory GPU server systems turning up, and more requirements for memory tracking it seems we should start closing the gap. Add two counters to track GPU per-node system memory allocations. The first is currently allocated to GPU objects, and the second is for memory that is stored in GPU page pools that can be reclaimed, by the shrinker. Cc: Christian Koenig <christian.koenig@amd.com> Cc: Matthew Brost <matthew.brost@intel.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: linux-mm@kvack.org Cc: Andrew Morton <akpm@linux-foundation.org> Acked-by: Zi Yan <ziy@nvidia.com> Acked-by: Shakeel Butt <shakeel.butt@linux.dev> Acked-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com> |
||
|
Kexin Sun
|
3f74e30d85 |
drivers/base/memory: fix stale reference to memory_block_add_nid()
The function memory_block_add_nid() was renamed to
memory_block_add_nid_early() by commit
|
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Gregory Price
|
c5c4834513 |
mm: name the anonymous MMOP enum as enum mmop
Give the MMOP enum (MMOP_OFFLINE, MMOP_ONLINE, etc) a proper type name so the compiler can help catch invalid values being assigned to variables of this type. Leave the existing functions returning int alone to allow for value-or-error pattern to remain unchanged without churn. mmop_default_online_type is left as int because it uses the -1 sentinal value to signal it hasn't been initialized yet. Keep the uint8_t buffer in offline_and_remove_memory() as-is for space efficiency, with an explicit cast when we consume the value. Move the enum definition before the CONFIG_MEMORY_HOTPLUG guard so it is unconditionally available for struct memory_block in memory.h. No functional change. Link: https://lore.kernel.org/linux-mm/3424eba7-523b-4351-abd0-3a888a3e5e61@kernel.org/ Link: https://lkml.kernel.org/r/20260211215447.2194189-1-gourry@gourry.net Signed-off-by: Gregory Price <gourry@gourry.net> Suggested-by: Jonathan Cameron <jonathan.cameron@huawei.com> Suggested-by: "David Hildenbrand (arm)" <david@kernel.org> Reviewed-by: Ben Cheatham <benjamin.cheatham@amd.com> Acked-by: David Hildenbrand (Arm) <david@kernel.org> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Davidlohr Bueso <dave@stgolabs.net> Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com> Cc: Danilo Krummrich <dakr@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Oscar Salvador <osalvador@suse.de> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Bartosz Golaszewski
|
1cf996ac30 |
driver core: make software nodes available earlier
Software nodes are currently initialized in a function registered as a postcore_initcall(). However, some devices may want to register software nodes earlier than that (or also in a postcore_initcall() where they're at the mercy of the link order). Move the initialization to driver_init() making swnode available much earlier as well as making their initialization time deterministic. Suggested-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://patch.msgid.link/20260402-nokia770-gpio-swnodes-v5-3-d730db3dd299@oss.qualcomm.com [ Fix typo in the commit message: "s/merci/mercy/". - Danilo ] Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
||
|
Bartosz Golaszewski
|
b3eb6a25b9 |
software node: remove software_node_exit()
software_node_exit() is an __exitcall() in a built-in compilation unit so effectively dead code. Remove it. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://patch.msgid.link/20260402-nokia770-gpio-swnodes-v5-2-d730db3dd299@oss.qualcomm.com Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
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|
Jakub Kicinski
|
8ffb33d770 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-7.0-rc7). Conflicts: net/vmw_vsock/af_vsock.c |
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|
Kexin Sun
|
e4cabc9731 |
drivers/base/memory: fix stale reference to memory_block_add_nid()
The function memory_block_add_nid() was renamed to
memory_block_add_nid_early() by commit
|
||
|
Andy Shevchenko
|
70fa0c308a |
device property: Document how to check for the property presence
Currently it's unclear if one may or may not rely on the error codes returned from the property getters to check for the property presence. Clarify this by updating kernel-doc for fwnode_property_*() and device_property_*() where it's applicable. Reported-by: Guenter Roeck <linux@roeck-us.net> Closes: https://lore.kernel.org/r/4b24f1f4-b395-467a-81b7-1334a2d48845@roeck-us.net Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com> Link: https://patch.msgid.link/20260318142404.2526642-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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|
Hans de Goede
|
56e3ee721b |
driver core: Make deferred_probe_timeout default a Kconfig option
Code using driver_deferred_probe_check_state() differs from most EPROBE_DEFER handling in the kernel. Where other EPROBE_DEFER handling (e.g. clks, gpios and regulators) waits indefinitely for suppliers to show up, code using driver_deferred_probe_check_state() will fail after the deferred_probe_timeout. This is a problem for generic distro kernels which want to support many boards using a single kernel build. These kernels want as much drivers to be modular as possible. The initrd also should be as small as possible, so the initrd will *not* have drivers not needing to get the rootfs. Combine this with waiting for a full-disk encryption password in the initrd and it is pretty much guaranteed that the default 10s timeout will be hit, causing probe() failures when drivers on the rootfs happen to get modprobe-d before other rootfs modules providing their suppliers. Make the default timeout configurable from Kconfig to allow distro kernel configs where many of the supplier drivers are modules to set the default through Kconfig. Reviewed-by: Saravana Kannan <saravanak@kernel.org> Signed-off-by: Hans de Goede <johannes.goede@oss.qualcomm.com> Link: https://patch.msgid.link/20260314084916.10868-1-johannes.goede@oss.qualcomm.com [ Drop deferred_probe_timeout documentation change in kernel-parameters.txt. - Danilo ] Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
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Gui-Dong Han
|
3210dabba4 |
driver core: simplify __device_set_driver_override() clearing logic
Currently, __device_set_driver_override() handles clearing the override
via empty string ("") and newline ("\n") in two separate paths. The "\n"
case also performs an unnecessary memory allocation and immediate free.
Simplify the logic by initializing 'new' to NULL and only allocating
memory if the string length remains non-zero after stripping the
trailing newline.
Reduce code size, improve readability, and avoid unnecessary memory
operations.
No functional change intended.
Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/driver-core/DGS82WWLXPJ0.2EH4VJSF30UR5@kernel.org/
Signed-off-by: Gui-Dong Han <hanguidong02@gmail.com>
Link: https://patch.msgid.link/20260325090905.169000-1-hanguidong02@gmail.com
[ Narrow cp's scope to the newline handling block; use scoped_guard().
- Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
|
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|
Linus Torvalds
|
30052002e6 |
regmap: Fix for v7.0
A fix from Andy Shevchenko for an issue with caching of page selector registers which are located inside the page they are switching. -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmnGzFoACgkQJNaLcl1U h9CIHgf9EUlo+kHud/8a2NPDZAQK9OHpfEGd5vHGemd9H2NUbKuq3wwHYSaKdF4x W+71HKr5GBIOG5hdmpQ2eynKtNdsvmLaTvjOtO4W8eJzI7hFR0I+O4dWEnJe5My9 tHciXphh515LXud7h5qGX04QZSzD0NzntVxDJyGGmLtSwQwJjIIi6mqCzPY1BJ9h +adQNYqj9DXM9EVSsRsYhcxc64QzyXK4ThW6/BNOEVGTuBOKv6AjnoDvEG8xVg+L /8Af01CwLS8vqlVl8nd9TyJOuIGW2GoeYjxkbvsRwEapF/bcnPyPU3fnEb653dxm H9tAsSrrUJ2Y+rzZpZdXmPyuJvD4SQ== =/tG2 -----END PGP SIGNATURE----- Merge tag 'regmap-fix-v7.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap Pull regmap fix from Mark Brown: "A fix from Andy Shevchenko for an issue with caching of page selector registers which are located inside the page they are switching" * tag 'regmap-fix-v7.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: regmap: Synchronize cache for the page selector |
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|
Rafael J. Wysocki
|
a1fa010b3c |
driver core: auxiliary bus: Drop auxiliary_dev_pm_ops
Since the PM core automatically falls back to using the driver PM callbacks directly if no bus type callbacks are present, it is not necessary to define a struct dev_pm_ops for a bus type that will only invoke driver PM callbacks from its PM callbacks. Accordingly, auxiliary_dev_pm_ops is redundant, so drop it. No intentional functional impact. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/4738700.LvFx2qVVIh@rafael.j.wysocki Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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|
Douglas Anderson
|
f72e77c33e |
device property: Make modifications of fwnode "flags" thread safe
In various places in the kernel, we modify the fwnode "flags" member
by doing either:
fwnode->flags |= SOME_FLAG;
fwnode->flags &= ~SOME_FLAG;
This type of modification is not thread-safe. If two threads are both
mucking with the flags at the same time then one can clobber the
other.
While flags are often modified while under the "fwnode_link_lock",
this is not universally true.
Create some accessor functions for setting, clearing, and testing the
FWNODE flags and move all users to these accessor functions. New
accessor functions use set_bit() and clear_bit(), which are
thread-safe.
Cc: stable@vger.kernel.org
Fixes:
|
||
|
Jakub Kicinski
|
9ebcf66cd6 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-7.0-rc6). No conflicts, or adjacent changes. Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Danilo Krummrich
|
14cf406e08 |
Linux 7.0-rc5
-----BEGIN PGP SIGNATURE----- iQFSBAABCgA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmnAYjkeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGUawH/RJlc6oT7epAoDmS STyZW2CF1U4r8YRFmB2LdmAeydMBbxiQeISN6ap3SkNGURGCZ9WcxjOE4uFhL2WW aQMTxFaSwj9YxB6x7P9JUn/evJWFh8Fhh48kh2LfXPEpxYQBaMhnGzDSZJ3rtRxi NMJ/OXqg8JbZS44S2OOC9HxgoYBJ1pNXvi/Q6hWFEJphr3qXaxSvl4go0zMNFEbq 39CK5vbJC8yQo4R/MAjuGvFs+Ivpjypp56iSIpK45z53Dfv255iSzIJhDxM3YGvl p3nVKpKAPuQMXpOUMOEl6z6muRL50es/Kgi2xh2JK6FWOOOgfunGNWDG/g5mgxjI QDUAm6U= =2ECC -----END PGP SIGNATURE----- Merge tag 'v7.0-rc5' into driver-core-next We need the driver-core fixes in here as well to build on top of. Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
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|
Linus Torvalds
|
d723091c8c |
Driver core fixes for 7.0-rc5
- Generalize driver_override in the driver core, providing a common sysfs implementation and concurrency-safe accessors for bus implementations - Do not use driver_override as IRQ name in the hwmon axi-fan driver - Remove an unnecessary driver_override check in sh platform_early - Migrate the platform bus to use the generic driver_override infrastructure, fixing a UAF condition caused by accessing the driver_override field without proper locking in the platform_match() callback -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQS2q/xV6QjXAdC7k+1FlHeO1qrKLgUCab6dRwAKCRBFlHeO1qrK LnELAP9MkP5mnaIbAM5/kYWaG+nQhsBTdzSbLSqv0vca7bljlwD/RFzAXOaCKvNz 8GrnY7FHzGSMPQhT+L86idGRCPmujgI= =dxv9 -----END PGP SIGNATURE----- Merge tag 'driver-core-7.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core Pull driver core fixes from Danilo Krummrich: - Generalize driver_override in the driver core, providing a common sysfs implementation and concurrency-safe accessors for bus implementations - Do not use driver_override as IRQ name in the hwmon axi-fan driver - Remove an unnecessary driver_override check in sh platform_early - Migrate the platform bus to use the generic driver_override infrastructure, fixing a UAF condition caused by accessing the driver_override field without proper locking in the platform_match() callback * tag 'driver-core-7.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: driver core: platform: use generic driver_override infrastructure sh: platform_early: remove pdev->driver_override check hwmon: axi-fan: don't use driver_override as IRQ name docs: driver-model: document driver_override driver core: generalize driver_override in struct device |
||
|
Jakub Kicinski
|
edab1ca5ec |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-7.0-rc5). net/netfilter/nft_set_rbtree.c |
||
|
Heiner Kallweit
|
e611a97032 |
regmap: mdio: make it depend on PHYLIB
MDIO-based regmap is the last user of config symbol MDIO_BUS.
MDIO access needs a MII bus, which requires PHYLIB for the provider part.
Therefore make REGMAP_MDIO depend on PHYLIB, what allows to remove
config symbol MDIO_BUS in a follow-up patch.
Note: After
|
||
|
Danilo Krummrich
|
ba424bc2c7 |
devres: rename and export set_node_dbginfo()
Rename set_node_dbginfo() to devres_set_node_dbginfo() and export it through base.h, such that we can access is from the Rust devres code. Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://patch.msgid.link/20260213220718.82835-5-dakr@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
||
|
Danilo Krummrich
|
b1081ef74d |
devres: add devres_node_remove()
When the Rust Devres<T> container type is dropped we need a way to remove the embedded struct devres_node from the device's node list. Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://patch.msgid.link/20260213220718.82835-4-dakr@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
||
|
Danilo Krummrich
|
9738ca7df9 |
devres: export devres_node_init() and devres_node_add()
Export devres_node_init() and devres_node_add() through base.h, such that we can access is from the Rust devres code. Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://patch.msgid.link/20260213220718.82835-3-dakr@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
||
|
Danilo Krummrich
|
31b5733bcd |
devres: move struct devres_node into base.h
Move struct devres_node into base.h, such that we can access it from the Rust devres code. Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://patch.msgid.link/20260213220718.82835-2-dakr@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
||
|
Danilo Krummrich
|
c321a511e3 |
devres: remove unnecessary unlocks in devres_release_group()
There is no need to call spin_unlock_irqrestore() in every conditional block, as release_nodes() can safely be called with an empty list, in case we hit the "if else" or "else" case. We do not use a scoped_guard() here to not unnecessarily change the indentation level. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://patch.msgid.link/20260202235210.55176-8-dakr@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
||
|
Danilo Krummrich
|
e19f3fed3c |
devres: use guard(spinlock_irqsave) where applicable
Use guard(spinlock_irqsave)(&dev->devres_lock) where it improves the code. Some places still use manual spin_lock_irqsave() and spin_unlock() as changing it to use a scoped_guard() would result in unnecessary churn. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://patch.msgid.link/20260202235210.55176-7-dakr@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
||
|
Danilo Krummrich
|
55e329d0f7 |
devres: add free_node callback to struct devres_node
Currently, there are three "subclasses" of struct devres_node, which are struct devres, struct devres_group, struct devres_action. release_nodes(), which only knows about the base struct devres_node, assumes that for all "subclasses" struct devres_node is the first member in the structure and calls kfree() on struct devres_node. While this technically works, we can still improve semantical correctness and type safety with a corresponding free_node() callback. Additionally, we will need this callback soon in the Rust Devres code, to allocate and free the required memory on the Rust side. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://patch.msgid.link/20260202235210.55176-6-dakr@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
||
|
Danilo Krummrich
|
2b5c6a14b5 |
devres: don't require ARCH_DMA_MINALIGN for devres actions
Currently, devres actions are allocated with devres_alloc(), which allocates a struct devres with a flexible array member for the actual data of the resource. The flexible array member is aligned to ARCH_DMA_MINALIGN, which is wasteful for devres actions that only need to store a struct action_devres. Introduce struct devres_action to handle devres actions separately from struct devres, analogous to what we do for struct devres_group. Speaking of which, without this patch struct devres_group is treated as struct devres in release_nodes(). While this is not an actual bug, as release callbacks for devres nodes in struct devres_group are empty functions anyways, it is a bit messy and can be confusing. (Note that besides devres actions, the Rust devres code will also make use of this. The Rust compiler can figure out the correct alignment of T in Devres<T> itself, i.e. no need to force a minimum alignment.) Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://patch.msgid.link/20260202235210.55176-5-dakr@kernel.org [ Add missing node->release check in devres_for_each_res() and find_dr(); use kzalloc_obj(). - Danilo ] Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
||
|
Danilo Krummrich
|
6fe9d3b942 |
devres: add devres_node_init()
Both alloc_dr() and devres_open_group() initialize devres_node.entry and set devres_node.release. Add a helper, devres_node_init(), for this pattern. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://patch.msgid.link/20260202235210.55176-4-dakr@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
||
|
Danilo Krummrich
|
4796dfd7e0 |
devres: add devres_node_add()
Both devres_add() and devres_open_group() acquire the devres_lock and call add_dr(). Add a helper, devres_node_add(), for this pattern. Use guard(spinlock_irqsave) to avoid the explicit unlock call and local flag variables. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://patch.msgid.link/20260202235210.55176-3-dakr@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
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Danilo Krummrich
|
f813ec9e84 |
devres: fix missing node debug info in devm_krealloc()
Fix missing call to set_node_dbginfo() for new devres nodes created by
devm_krealloc().
Fixes:
|
||
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Danilo Krummrich
|
2b38efc05b |
driver core: platform: use generic driver_override infrastructure
When a driver is probed through __driver_attach(), the bus' match()
callback is called without the device lock held, thus accessing the
driver_override field without a lock, which can cause a UAF.
Fix this by using the driver-core driver_override infrastructure taking
care of proper locking internally.
Note that calling match() from __driver_attach() without the device lock
held is intentional. [1]
Link: https://lore.kernel.org/driver-core/DGRGTIRHA62X.3RY09D9SOK77P@kernel.org/ [1]
Reported-by: Gui-Dong Han <hanguidong02@gmail.com>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220789
Fixes:
|
||
|
Danilo Krummrich
|
cb3d1049f4 |
driver core: generalize driver_override in struct device
Currently, there are 12 busses (including platform and PCI) that duplicate the driver_override logic for their individual devices. All of them seem to be prone to the bug described in [1]. While this could be solved for every bus individually using a separate lock, solving this in the driver-core generically results in less (and cleaner) changes overall. Thus, move driver_override to struct device, provide corresponding accessors for busses and handle locking with a separate lock internally. In particular, add device_set_driver_override(), device_has_driver_override(), device_match_driver_override() and generalize the sysfs store() and show() callbacks via a driver_override feature flag in struct bus_type. Until all busses have migrated, keep driver_set_override() in place. Note that we can't use the device lock for the reasons described in [2]. Link: https://bugzilla.kernel.org/show_bug.cgi?id=220789 [1] Link: https://lore.kernel.org/driver-core/DGRGTIRHA62X.3RY09D9SOK77P@kernel.org/ [2] Tested-by: Gui-Dong Han <hanguidong02@gmail.com> Co-developed-by: Gui-Dong Han <hanguidong02@gmail.com> Signed-off-by: Gui-Dong Han <hanguidong02@gmail.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://patch.msgid.link/20260303115720.48783-2-dakr@kernel.org [ Use dev->bus instead of sp->bus for consistency; fix commit message to refer to the struct bus_type's driver_override feature flag. - Danilo ] Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
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|
Bart Van Assche
|
29ab768277 |
PM: runtime: Fix a race condition related to device removal
The following code in pm_runtime_work() may dereference the dev->parent
pointer after the parent device has been freed:
/* Maybe the parent is now able to suspend. */
if (parent && !parent->power.ignore_children) {
spin_unlock(&dev->power.lock);
spin_lock(&parent->power.lock);
rpm_idle(parent, RPM_ASYNC);
spin_unlock(&parent->power.lock);
spin_lock(&dev->power.lock);
}
Fix this by inserting a flush_work() call in pm_runtime_remove().
Without this patch blktest block/001 triggers the following complaint
sporadically:
BUG: KASAN: slab-use-after-free in lock_acquire+0x70/0x160
Read of size 1 at addr ffff88812bef7198 by task kworker/u553:1/3081
Workqueue: pm pm_runtime_work
Call Trace:
<TASK>
dump_stack_lvl+0x61/0x80
print_address_description.constprop.0+0x8b/0x310
print_report+0xfd/0x1d7
kasan_report+0xd8/0x1d0
__kasan_check_byte+0x42/0x60
lock_acquire.part.0+0x38/0x230
lock_acquire+0x70/0x160
_raw_spin_lock+0x36/0x50
rpm_suspend+0xc6a/0xfe0
rpm_idle+0x578/0x770
pm_runtime_work+0xee/0x120
process_one_work+0xde3/0x1410
worker_thread+0x5eb/0xfe0
kthread+0x37b/0x480
ret_from_fork+0x6cb/0x920
ret_from_fork_asm+0x11/0x20
</TASK>
Allocated by task 4314:
kasan_save_stack+0x2a/0x50
kasan_save_track+0x18/0x40
kasan_save_alloc_info+0x3d/0x50
__kasan_kmalloc+0xa0/0xb0
__kmalloc_noprof+0x311/0x990
scsi_alloc_target+0x122/0xb60 [scsi_mod]
__scsi_scan_target+0x101/0x460 [scsi_mod]
scsi_scan_channel+0x179/0x1c0 [scsi_mod]
scsi_scan_host_selected+0x259/0x2d0 [scsi_mod]
store_scan+0x2d2/0x390 [scsi_mod]
dev_attr_store+0x43/0x80
sysfs_kf_write+0xde/0x140
kernfs_fop_write_iter+0x3ef/0x670
vfs_write+0x506/0x1470
ksys_write+0xfd/0x230
__x64_sys_write+0x76/0xc0
x64_sys_call+0x213/0x1810
do_syscall_64+0xee/0xfc0
entry_SYSCALL_64_after_hwframe+0x4b/0x53
Freed by task 4314:
kasan_save_stack+0x2a/0x50
kasan_save_track+0x18/0x40
kasan_save_free_info+0x3f/0x50
__kasan_slab_free+0x67/0x80
kfree+0x225/0x6c0
scsi_target_dev_release+0x3d/0x60 [scsi_mod]
device_release+0xa3/0x220
kobject_cleanup+0x105/0x3a0
kobject_put+0x72/0xd0
put_device+0x17/0x20
scsi_device_dev_release+0xacf/0x12c0 [scsi_mod]
device_release+0xa3/0x220
kobject_cleanup+0x105/0x3a0
kobject_put+0x72/0xd0
put_device+0x17/0x20
scsi_device_put+0x7f/0xc0 [scsi_mod]
sdev_store_delete+0xa5/0x120 [scsi_mod]
dev_attr_store+0x43/0x80
sysfs_kf_write+0xde/0x140
kernfs_fop_write_iter+0x3ef/0x670
vfs_write+0x506/0x1470
ksys_write+0xfd/0x230
__x64_sys_write+0x76/0xc0
x64_sys_call+0x213/0x1810
Reported-by: Ming Lei <ming.lei@redhat.com>
Closes: https://lore.kernel.org/all/ZxdNvLNI8QaOfD2d@fedora/
Reported-by: syzbot+6c905ab800f20cf4086c@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/all/68c13942.050a0220.2ff435.000b.GAE@google.com/
Fixes:
|
||
|
Andy Shevchenko
|
09e70e4f11
|
regmap: Synchronize cache for the page selector
If the selector register is represented in each page, its value
according to the debugfs is stale because it gets synchronized
only after the real page switch happens. Hence the regmap cache
initialisation from the HW inherits outdated data in the selector
register.
Synchronize cache for the page selector just in time.
Before (offset followed by hexdump, the first byte is selector):
// Real registers
18: 05 ff 00 00 ff 0f 00 00 f0 00 00 00
...
// Virtual (per port)
40: 05 ff 00 00 e0 e0 00 00 00 00 00 1f
50: 00 ff 00 00 e0 e0 00 00 00 00 00 1f
60: 01 ff 00 00 ff ff 00 00 00 00 00 00
70: 02 ff 00 00 cf f3 00 00 00 00 00 0c
80: 03 ff 00 00 00 00 00 00 00 00 00 ff
90: 04 ff 00 00 ff 0f 00 00 f0 00 00 00
After:
// Real registers
18: 05 ff 00 00 ff 0f 00 00 f0 00 00 00
...
// Virtual (per port)
40: 00 ff 00 00 e0 e0 00 00 00 00 00 1f
50: 01 ff 00 00 e0 e0 00 00 00 00 00 1f
60: 02 ff 00 00 ff ff 00 00 00 00 00 00
70: 03 ff 00 00 cf f3 00 00 00 00 00 0c
80: 04 ff 00 00 00 00 00 00 00 00 00 ff
90: 05 ff 00 00 ff 0f 00 00 f0 00 00 00
Fixes:
|
||
|
Andy Shevchenko
|
1ef3e1c278
|
regmap: Synchronize cache for the page selector
If the selector register is represented in each page, its value
according to the debugfs is stale because it gets synchronized
only after the real page switch happens. Hence the regmap cache
initialisation from the HW inherits outdated data in the selector
register.
Synchronize cache for the page selector just in time.
Before (offset followed by hexdump, the first byte is selector):
// Real registers
18: 05 ff 00 00 ff 0f 00 00 f0 00 00 00
...
// Virtual (per port)
40: 05 ff 00 00 e0 e0 00 00 00 00 00 1f
50: 00 ff 00 00 e0 e0 00 00 00 00 00 1f
60: 01 ff 00 00 ff ff 00 00 00 00 00 00
70: 02 ff 00 00 cf f3 00 00 00 00 00 0c
80: 03 ff 00 00 00 00 00 00 00 00 00 ff
90: 04 ff 00 00 ff 0f 00 00 f0 00 00 00
After:
// Real registers
18: 05 ff 00 00 ff 0f 00 00 f0 00 00 00
...
// Virtual (per port)
40: 00 ff 00 00 e0 e0 00 00 00 00 00 1f
50: 01 ff 00 00 e0 e0 00 00 00 00 00 1f
60: 02 ff 00 00 ff ff 00 00 00 00 00 00
70: 03 ff 00 00 cf f3 00 00 00 00 00 0c
80: 04 ff 00 00 00 00 00 00 00 00 00 ff
90: 05 ff 00 00 ff 0f 00 00 f0 00 00 00
Fixes:
|
||
|
Rafael J. Wysocki
|
97e6fabee5 |
driver core: auxiliary bus: Introduce dev_is_auxiliary()
Introduce dev_is_auxiliary() in analogy with dev_is_platform() to facilitate subsequent changes. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://patch.msgid.link/5079467.GXAFRqVoOG@rafael.j.wysocki |
||
|
Heiner Kallweit
|
ece5283706 |
driver: core: constify groups array argument in device_add_groups and device_remove_groups
Now that sysfs_create_groups() and sysfs_remove_groups() allow to pass constant groups arrays, we can constify the groups array argument also here. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Link: https://patch.msgid.link/8ea2d6d1-0adb-4d7f-92bc-751e93ce08d6@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Bartosz Golaszewski
|
030706e954 |
base: soc: rename and export soc_device_get_machine()
Some SoC drivers reimplement the functionality of soc_device_get_machine(). Make this function accessible through the sys_soc.h header and rename it to a more descriptive name. Reviewed-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com> Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Link: https://patch.msgid.link/20260223-soc-of-root-v2-4-b45da45903c8@oss.qualcomm.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Bartosz Golaszewski
|
e06c3b1379 |
base: soc: order includes alphabetically
For easier readability and maintenance, order the included headers alphabetically. Reviewed-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com> Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Link: https://patch.msgid.link/20260223-soc-of-root-v2-3-b45da45903c8@oss.qualcomm.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Dan Williams
|
f917dc5606 |
device core: Fix kernel-doc warnings in base.h
In preparation for adding new fields to 'struct device_private' fix up existing kernel-doc warnings in this header file of the form: Warning: drivers/base/base.h:59 struct member 'subsys' not described in 'subsys_private' Warning: drivers/base/base.h:59 struct member 'devices_kset' not described in 'subsys_private' Warning: drivers/base/base.h:59 struct member 'interfaces' not described in 'subsys_private' Warning: drivers/base/base.h:59 struct member 'mutex' not described in 'subsys_private' ...which are simple replacements of " - " with ": ". Add new descriptions for these previously undescribed fields: Warning: drivers/base/base.h:58 struct member 'drivers_autoprobe' not described in 'subsys_private' Warning: drivers/base/base.h:117 struct member 'deferred_probe_reason' not described in 'device_private' Signed-off-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com> Link: https://patch.msgid.link/20260303000207.1836586-3-dan.j.williams@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Danilo Krummrich
|
9900002f7a |
Linux 7.0-rc3
-----BEGIN PGP SIGNATURE----- iQFSBAABCgA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmmuDMYeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGLO4IAJ5kpRUi1STiqseb bLawF3gehuZp8VPAYnJsACYXN7kMx9OQJ2SE4Y0Y16ZlHtS1TTvsEAhwSTyYH7Jc hb1iSfoN1kxgDh2U3yZZJz9+DzQh6/YCDXJjyhpSgWOejhaYe7r7er5xqdKpGgVx 6hlvN92/c1m7aqMjKNXeD7YKoXn35FzwPYQAyksJdwMWbq27HE1Vb42PHht21yUX 1ndEUw0UMYH3IrDON+7QtE/aXW1PlLLeQWPDpG9y5FhoseZFEcNkm5NVYshuZ8L4 WZj3Q5IvQ/zj9DuwagW4Gab9XwzKIWSXuuSLRyQzv+OcAyITiC+Uo3z55TFmvXs7 2DOHBkY= =depW -----END PGP SIGNATURE----- Merge tag 'v7.0-rc3' into driver-core-next We need the driver-core fixes in here as well to build on top of. Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
||
|
Krzysztof Kozlowski
|
b1ef855c62
|
regmap: Simplify devres handling
The resource-managed devm_regmap_init() can be a bit simpler by using devm_add_action_or_reset() instead of devres_alloc(). This allows to drop the less-obvious pointer to pointer (struct regmap **ptr) and make devm_regmap_release() interface simpler. Code is functionally equivalent with minor difference: devres_alloc() will happen now after successful resource init (__regmap_init()). Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Link: https://patch.msgid.link/20260305201349.32734-2-krzysztof.kozlowski@oss.qualcomm.com Signed-off-by: Mark Brown <broonie@kernel.org> |
||
|
Andy Shevchenko
|
e7662bced2
|
regcache: Move HW readback after cache initialisation
Make sure that cache is initialised before calling any IO using regmap, this makes sure that we won't access NULL or invalid pointers in the cache which hasn't been initialised. As a side effect it also makes the ordering of cleaning up the resources in regcache_exit() to be the same (and correct) as in the error path of regcache_init(). This is not a problem right now as they do not have dependencies, but it makes code robust against potential changes in the future. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://patch.msgid.link/20260305085449.3184020-4-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org> |
||
|
Andy Shevchenko
|
0cb7ae9818
|
regcache: Allocate and free reg_defaults on the same level
Currently reg_defaults buffer may be allocated on two different levels when the user provided them and we duplicate it in regcache_init() or when user wants us to read back from HW in regcache_hw_init(). This inconsistency makes code harder to follow and maintain. Allocate and free reg_defaults on the same level in regcache_init() to improve the readability and maintenance efforts. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://patch.msgid.link/20260305085449.3184020-3-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org> |
||
|
Andy Shevchenko
|
8e2d279724
|
regcache: Move count check and cache_bypass assignment to the caller
Make regcache_count_cacheable_registers() just a counting routine without any side effects by moving count check and cache_bypass assignment to the caller. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://patch.msgid.link/20260305085449.3184020-2-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org> |
||
|
Andy Shevchenko
|
9891b52ba1
|
regcache: Factor out regcache_hw_exit() helper
Factor out regcache_hw_exit() helper to make error and exit paths clearer. This helps to avoid missing changes in case the code gets shuffled in the future. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://patch.msgid.link/20260303092820.2818138-2-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org> |
||
|
Danilo Krummrich
|
9de68394a6 |
Revert "driver core: enforce device_lock for driver_match_device()"
This reverts commit |
||
|
Mark Brown
|
c26137d3a3 |
Linux 7.0-rc2
-----BEGIN PGP SIGNATURE----- iQFSBAABCgA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmmkzjMeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGmMQH/Re7EzF7ves6nnmm ZDxq359yFKG1LpDJj70iaJBLtU5VeEPn4nRi2HjMcTVMUCxL+KSoM4ASImyRgGL2 noo5U7+0nrRc0iI4p4GQQ3Ui13KCoIv6gZy1NG4V/b97FARvKovGBkHkDg3xu04I AEKyEeFjkKXKDcDI5i9QXPUUfvKBgmGOIG7jAg5Me8qHbvNZ47eSVOormSFQN5iC laXN1El0q2YsO/bDPgDBJfSkCYZbWXISdtfRfyM3CvqK9Ty9L1hMGwWFq5A74Uzv c/I3/RjiXsPFggrUt5/L2kUxW89iknQQbMr5H6ze5Ee1a8VwgcjbIJaoHLzhXbMR lMcZEXk= =WOBd -----END PGP SIGNATURE----- gpgsig -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmmmGhwACgkQJNaLcl1U h9AtNAf+JLWT7fFTSe+2yYsFpyhZYon1WLmsVjzNsQK1zxiqJqK6wAhNaoNb2LrI yk00Uj9r6r1a3/e2DuHhUSTG5hzS6L2cqFgZmiFs+SWp14oa4sPYUKQX6ROE7umG shR4jwsijfbdeeN4aCUOAJbkQLuZ9jXtKE7dEnV5kB7f5B4DGCgYg5XHoCos9sPm P9Fscj+NQZ3F1UhWjQfxSxrQanuS2TtP4OOGw1frhk7Cbq2t/DgQSBlfJaZ9TEuW WdddhJmzJgYr6Fe/7u67xtmjarLW9mq/s+I9edf4Me66Ftm/dL9FLah3i80CwdGE VUlsg9lxQX004tlpZARp2CWrJOmX7g== =zulM -----END PGP SIGNATURE----- regmap: Merge up v7.0-rc2 This gets us a fix for KUnit execution which allows us to run the testsuite again. |
||
|
Andy Shevchenko
|
9ab637ac5d
|
regcache: Amend printf() specifiers when printing registers
In one case the 0x is provided in the formatting string, while the rest use # for that. In a couple of more cases a decimal signed value specifier is used. Amend them to use %#x when register is printed. Note, for the case, when it's related to the read/write, use %x to be in align with the similar messages in regmap core. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://patch.msgid.link/20260302095847.2310066-4-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org> |
||
|
Andy Shevchenko
|
8e29bc88e1
|
regcache: Define iterator inside for-loop and align their types
Some of the iterators may be defined inside the respective for-loop reducing the scope and potential risk of their misuse. While at it, align their types based on the type of the upper or lower limits. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://patch.msgid.link/20260302095847.2310066-3-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org> |
||
|
Dmitry Torokhov
|
1b9a5bc851 |
driver core: platform: fix various formatting issues
Make checkpatch happy. This helps when checkpatch is set up as an automatic linter. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com> Link: https://patch.msgid.link/20260214025246.2095239-4-dmitry.torokhov@gmail.com Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
||
|
Dmitry Torokhov
|
0fc434bc2c |
driver core: platform: allow attaching software nodes when creating devices
Extend platform_device_info structure with an optional pointer to a software node to be used as a secondary firmware node for the device being created. If software node has not been registered yet it will be automatically registered. This reduces boilerplate needed when switching legacy board code to static device properties/GPIO references. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com> Link: https://patch.msgid.link/20260214025246.2095239-3-dmitry.torokhov@gmail.com Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
||
|
Marc Zyngier
|
f0a2eac6a5 |
platform-msi: Remove stale comment
The backward compatibility code for the previous incarnation of
platform MSI was removed in
|
||
|
Andy Shevchenko
|
c2bcf62ca7
|
regcache: Split regcache_count_cacheable_registers() helper
The introduced helper allows to check for the non-cacheable configurations earlier during initialisation. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://patch.msgid.link/20260210161058.53093-3-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org> |
||
|
Andy Shevchenko
|
1fcf171178
|
regcache: Remove duplicate check in regcache_hw_init()
The regcache_hw_init() is never called without preliminary check for num_reg_defaults_raw not being 0. Thus, remove duplicate in the function. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://patch.msgid.link/20260210161058.53093-2-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org> |
||
|
Andy Shevchenko
|
2692c614f8 |
device property: Allow secondary lookup in fwnode_get_next_child_node()
When device_get_child_node_count() got split to the fwnode and device respective APIs, the fwnode didn't inherit the ability to traverse over the secondary fwnode. Hence any user, that switches from device to fwnode API misses this feature. In particular, this was revealed by the commit |
||
|
Kees Cook
|
189f164e57 |
Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses
Conversion performed via this Coccinelle script:
// SPDX-License-Identifier: GPL-2.0-only
// Options: --include-headers-for-types --all-includes --include-headers --keep-comments
virtual patch
@gfp depends on patch && !(file in "tools") && !(file in "samples")@
identifier ALLOC = {kmalloc_obj,kmalloc_objs,kmalloc_flex,
kzalloc_obj,kzalloc_objs,kzalloc_flex,
kvmalloc_obj,kvmalloc_objs,kvmalloc_flex,
kvzalloc_obj,kvzalloc_objs,kvzalloc_flex};
@@
ALLOC(...
- , GFP_KERNEL
)
$ make coccicheck MODE=patch COCCI=gfp.cocci
Build and boot tested x86_64 with Fedora 42's GCC and Clang:
Linux version 6.19.0+ (user@host) (gcc (GCC) 15.2.1 20260123 (Red Hat 15.2.1-7), GNU ld version 2.44-12.fc42) #1 SMP PREEMPT_DYNAMIC 1970-01-01
Linux version 6.19.0+ (user@host) (clang version 20.1.8 (Fedora 20.1.8-4.fc42), LLD 20.1.8) #1 SMP PREEMPT_DYNAMIC 1970-01-01
Signed-off-by: Kees Cook <kees@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
||
|
Linus Torvalds
|
32a92f8c89 |
Convert more 'alloc_obj' cases to default GFP_KERNEL arguments
This converts some of the visually simpler cases that have been split over multiple lines. I only did the ones that are easy to verify the resulting diff by having just that final GFP_KERNEL argument on the next line. Somebody should probably do a proper coccinelle script for this, but for me the trivial script actually resulted in an assertion failure in the middle of the script. I probably had made it a bit _too_ trivial. So after fighting that far a while I decided to just do some of the syntactically simpler cases with variations of the previous 'sed' scripts. The more syntactically complex multi-line cases would mostly really want whitespace cleanup anyway. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Linus Torvalds
|
bf4afc53b7 |
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
||
|
Kees Cook
|
69050f8d6d |
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook <kees@kernel.org> |
||
|
Linus Torvalds
|
c3c1e98533 |
More power management updates for 7.0-rc1
- Fix the handling of package-scope MSRs in the intel_rapl power
capping driver when called from the PMU subsystem and make it add all
package CPUs to the PMU cpumask to allow tools to read RAPL events
from any CPU in the package (Kuppuswamy Satharayananyan)
- Rework the invalid version check in the intel_rapl_tpmi power capping
driver to account for the fact that on partitioned systems, multiple
TPMI instances may exist per package, but RAPL registers are only
valid on one instance (Kuppuswamy Satharayananyan)
- Describe the new intel_idle.table command line option in the
admin-guide intel_idle documentation (Artem Bityutskiy)
- Fix a crash in the ladder cpuidle governor on systems with only one
(polling) idle state available by making the cpuidle core bypass the
governor in those cases and adjust the other existing governors to
that change (Aboorva Devarajan, Christian Loehle)
- Update kerneldoc comments for wake IRQ management functions that
have not been matching the code (Wang Jiayue)
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Merge tag 'pm-7.0-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more power management updates from Rafael Wysocki:
"These are mostly fixes on top of the power management updates merged
recently in cpuidle governors, in the Intel RAPL power capping driver
and in the wake IRQ management code:
- Fix the handling of package-scope MSRs in the intel_rapl power
capping driver when called from the PMU subsystem and make it add
all package CPUs to the PMU cpumask to allow tools to read RAPL
events from any CPU in the package (Kuppuswamy Satharayananyan)
- Rework the invalid version check in the intel_rapl_tpmi power
capping driver to account for the fact that on partitioned systems,
multiple TPMI instances may exist per package, but RAPL registers
are only valid on one instance (Kuppuswamy Satharayananyan)
- Describe the new intel_idle.table command line option in the
admin-guide intel_idle documentation (Artem Bityutskiy)
- Fix a crash in the ladder cpuidle governor on systems with only one
(polling) idle state available by making the cpuidle core bypass
the governor in those cases and adjust the other existing governors
to that change (Aboorva Devarajan, Christian Loehle)
- Update kerneldoc comments for wake IRQ management functions that
have not been matching the code (Wang Jiayue)"
* tag 'pm-7.0-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpuidle: menu: Remove single state handling
cpuidle: teo: Remove single state handling
cpuidle: haltpoll: Remove single state handling
cpuidle: Skip governor when only one idle state is available
powercap: intel_rapl_tpmi: Remove FW_BUG from invalid version check
PM: sleep: wakeirq: Update outdated documentation comments
Documentation: PM: Document intel_idle.table command line option
powercap: intel_rapl: Expose all package CPUs in PMU cpumask
powercap: intel_rapl: Remove incorrect CPU check in PMU context
|
||
|
Linus Torvalds
|
46a1daac56 |
Pin control changes for the v7.0 kernel cycle:
Core changes:
- Drop the unused devm_pinctrl_unregister() function.
- Move pretended generic pin control functionality out of the
core and into the Amlogic AM4 driver. We have something better
coming (hopefully).
New hardware support:
- Spacemit K3 (RISC-V) pin control support.
- Atmel AT91 PIO4 (ARM32) SAMA7D65 pin control support.
- Exynos9610 (ARM64) pin control support.
- Qualcomm Mahua TLMM (ARM64) pin control support.
- Microchip Polarfire MSSIO (RISC-V) pin control support.
- Ocelot LAN9645XF (multiplatform) pin control support.
Improvements:
- Using a few more guards for locking.
- Various nonurgent fixes and tweaks.
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Merge tag 'pinctrl-v7.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control updates from Linus Walleij:
"Core changes:
- Drop the unused devm_pinctrl_unregister() function
- Move pretended generic pin control functionality out of the core
and into the Amlogic AM4 driver. We have something better coming
(hopefully)
New hardware support:
- Spacemit K3 (RISC-V) pin control support
- Atmel AT91 PIO4 (ARM32) SAMA7D65 pin control support
- Exynos9610 (ARM64) pin control support
- Qualcomm Mahua TLMM (ARM64) pin control support
- Microchip Polarfire MSSIO (RISC-V) pin control support
- Ocelot LAN9645XF (multiplatform) pin control support
Improvements:
- Using a few more guards for locking
- Various nonurgent fixes and tweaks"
* tag 'pinctrl-v7.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (73 commits)
pinctrl: generic: move function to amlogic-am4 driver
pinctrl: intel: Align Copyright note with corporate guidelines
pinctrl: mediatek: remove unused drv_offset field
pinctrl: canaan: k230: Fix NULL pointer dereference when parsing devicetree
pinctrl: single: fix refcount leak in pcs_add_gpio_func()
pinctrl: meson: amlogic-a4: Fix device node reference leak in bank helpers
pinctrl: qcom: sm8250-lpass-lpi: Fix i2s2_data_groups definition
pinctrl: core: Remove duplicate error messages
pinctrl: core: Simplify devm_pinctrl_*()
pinctrl: core: Remove unused devm_pinctrl_unregister()
dt-bindings: pinctrl: spacemit: fix drive-strength check warning
pinctrl: fix kismet issues with GENERIC_PINCTRL
pinctrl: tangier: Join tng_pinctrl_probe() into its wrapper
pinctrl: tangier: Remove duplicate error messages
pinctrl: lynxpoint: Remove duplicate error messages
pinctrl: cherryview: Remove duplicate error messages
pinctrl: baytrail: Remove duplicate error messages
pinctrl: intel: Remove duplicate error messages
pinctrl: equilibrium: Fix device node reference leak in pinbank_init()
dt-bindings: pinctrl: pinctrl-microchip-sgpio: add LAN969x
...
|
||
|
Linus Torvalds
|
d4a379a52c |
SCSI misc on 20260212
Usual driver updates (qla2xxx, mpi3mr, mpt3sas, ufs) plus assorted cleanups and fixes. The biggest core change is the massive code motion in the sd driver to remove forward declarations and the most significant change is to enumify the queuecommand return. Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com> -----BEGIN PGP SIGNATURE----- iLgEABMIAGAWIQTnYEDbdso9F2cI+arnQslM7pishQUCaY4ljBsUgAAAAAAEAA5t YW51MiwyLjUrMS4xMSwyLDImHGphbWVzLmJvdHRvbWxleUBoYW5zZW5wYXJ0bmVy c2hpcC5jb20ACgkQ50LJTO6YrIWFlwEAr9nc1ntxH4UNPgFCVjKyAOa5IE+p5o5C 2lwQIufcihEBAORvI9KO6AoEK6v9TmMKZXoyVsDRFe79fQE5NwCjfAA3 =My8f -----END PGP SIGNATURE----- Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI updates from James Bottomley: "Usual driver updates (qla2xxx, mpi3mr, mpt3sas, ufs) plus assorted cleanups and fixes. The biggest core change is the massive code motion in the sd driver to remove forward declarations and the most significant change is to enumify the queuecommand return" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (78 commits) scsi: csiostor: Fix dereference of null pointer rn scsi: buslogic: Reduce stack usage scsi: ufs: host: mediatek: Require CONFIG_PM scsi: ufs: mediatek: Fix page faults in ufs_mtk_clk_scale() trace event scsi: smartpqi: Fix memory leak in pqi_report_phys_luns() scsi: mpi3mr: Make driver probing asynchronous scsi: ufs: core: Flush exception handling work when RPM level is zero scsi: efct: Use IRQF_ONESHOT and default primary handler scsi: ufs: core: Use a host-wide tagset in SDB mode scsi: qla2xxx: target: Add WQ_PERCPU to alloc_workqueue() users scsi: qla2xxx: Add WQ_PERCPU to alloc_workqueue() users scsi: qla4xxx: Add WQ_PERCPU to alloc_workqueue() users scsi: mpi3mr: Driver version update to 8.17.0.3.50 scsi: mpi3mr: Fixed the W=1 compilation warning scsi: mpi3mr: Record and report controller firmware faults scsi: mpi3mr: Update MPI Headers to revision 39 scsi: mpi3mr: Use negotiated link rate from DevicePage0 scsi: mpi3mr: Avoid redundant diag-fault resets scsi: mpi3mr: Rename log data save helper to reflect threaded/BH context scsi: mpi3mr: Add module parameter to control threaded IRQ polling ... |
||
|
Linus Torvalds
|
c6e62d002b |
Driver core changes for 7.0-rc1
- Bus:
- Ensure bus->match() is consistently called with the device lock held
- Improve type safety of bus_find_device_by_acpi_dev()
- Devtmpfs:
- Parse 'devtmpfs.mount=' boot parameter with kstrtoint() instead of
simple_strtoul()
- Avoid sparse warning by making devtmpfs_context_ops static
- IOMMU:
- Do not register the qcom_smmu_tbu_driver in arm_smmu_device_probe()
- MAINTAINERS:
- Add the new driver-core mailing list (driver-core@lists.linux.dev)
to all relevant entries
- Add missing tree location for "FIRMWARE LOADER (request_firmware)"
- Add driver-model documentation to the "DRIVER CORE" entry
- Add missing driver-core maintainers to the "AUXILIARY BUS" entry
- Misc:
- Change return type of attribute_container_register() to void; it has
always been infallible
- Do not export sysfs_change_owner(), sysfs_file_change_owner() and
device_change_owner()
- Move devres_for_each_res() from the public devres header to
drivers/base/base.h
- Do not use a static struct device for the faux bus; allocate it
dynamically
- Revocable:
- Patches for the revocable synchronization primitive have been
scheduled for v7.0-rc1, but have been reverted as they need some
more refinement
- Rust:
- Device:
- Support dev_printk on all device types, not just the core Device
struct; remove now-redundant .as_ref() calls in dev_* print calls
- Devres:
- Introduce an internal reference count in Devres<T> to avoid a
deadlock condition in case of (indirect) nesting
- DMA:
- Allow drivers to tune the maximum DMA segment size via
dma_set_max_seg_size()
- I/O:
- Introduce the concept of generic I/O backends to handle different
kinds of device shared memory through a common interface.
This enables higher-level concepts such as register abstractions,
I/O slices, and field projections to be built generically on top.
In a first step, introduce the Io, IoCapable<T>, and IoKnownSize
trait hierarchy for sharing a common interface supporting offset
validation and bound-checking logic between I/O backends.
- Refactor MMIO to use the common I/O backend infrastructure
- Misc:
- Add __rust_helper annotations to C helpers for inlining into Rust
code
- Use "kernel vertical" style for imports
- Replace kernel::c_str! with C string literals
- Update ARef imports to use sync::aref
- Use pin_init::zeroed() for struct auxiliary_device_id and debugfs
file_operations initialization
- Use LKMM atomic types in debugfs doc-tests
- Various minor comment and documentation fixes
- PCI:
- Implement PCI configuration space accessors using the common I/O
backend infrastructure
- Document pci::Bar device endianness assumptions
- SoC:
- Abstractions for struct soc_device and struct soc_device_attribute
- Sample driver for soc::Device
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Merge tag 'driver-core-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core
Pull driver core updates from Danilo Krummrich:
"Bus:
- Ensure bus->match() is consistently called with the device lock
held
- Improve type safety of bus_find_device_by_acpi_dev()
Devtmpfs:
- Parse 'devtmpfs.mount=' boot parameter with kstrtoint() instead of
simple_strtoul()
- Avoid sparse warning by making devtmpfs_context_ops static
IOMMU:
- Do not register the qcom_smmu_tbu_driver in arm_smmu_device_probe()
MAINTAINERS:
- Add the new driver-core mailing list (driver-core@lists.linux.dev)
to all relevant entries
- Add missing tree location for "FIRMWARE LOADER (request_firmware)"
- Add driver-model documentation to the "DRIVER CORE" entry
- Add missing driver-core maintainers to the "AUXILIARY BUS" entry
Misc:
- Change return type of attribute_container_register() to void; it
has always been infallible
- Do not export sysfs_change_owner(), sysfs_file_change_owner() and
device_change_owner()
- Move devres_for_each_res() from the public devres header to
drivers/base/base.h
- Do not use a static struct device for the faux bus; allocate it
dynamically
Revocable:
- Patches for the revocable synchronization primitive have been
scheduled for v7.0-rc1, but have been reverted as they need some
more refinement
Rust:
- Device:
- Support dev_printk on all device types, not just the core Device
struct; remove now-redundant .as_ref() calls in dev_* print
calls
- Devres:
- Introduce an internal reference count in Devres<T> to avoid a
deadlock condition in case of (indirect) nesting
- DMA:
- Allow drivers to tune the maximum DMA segment size via
dma_set_max_seg_size()
- I/O:
- Introduce the concept of generic I/O backends to handle
different kinds of device shared memory through a common
interface.
This enables higher-level concepts such as register
abstractions, I/O slices, and field projections to be built
generically on top.
In a first step, introduce the Io, IoCapable<T>, and IoKnownSize
trait hierarchy for sharing a common interface supporting offset
validation and bound-checking logic between I/O backends.
- Refactor MMIO to use the common I/O backend infrastructure
- Misc:
- Add __rust_helper annotations to C helpers for inlining into
Rust code
- Use "kernel vertical" style for imports
- Replace kernel::c_str! with C string literals
- Update ARef imports to use sync::aref
- Use pin_init::zeroed() for struct auxiliary_device_id and
debugfs file_operations initialization
- Use LKMM atomic types in debugfs doc-tests
- Various minor comment and documentation fixes
- PCI:
- Implement PCI configuration space accessors using the common I/O
backend infrastructure
- Document pci::Bar device endianness assumptions
- SoC:
- Abstractions for struct soc_device and struct soc_device_attribute
- Sample driver for soc::Device"
* tag 'driver-core-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (79 commits)
rust: devres: fix race condition due to nesting
rust: dma: add missing __rust_helper annotations
samples: rust: pci: Remove some additional `.as_ref()` for `dev_*` print
Revert "revocable: Revocable resource management"
Revert "revocable: Add Kunit test cases"
Revert "selftests: revocable: Add kselftest cases"
driver core: remove device_change_owner() export
sysfs: remove exports of sysfs_*change_owner()
driver core: disable revocable code from build
revocable: Add KUnit test for concurrent access
revocable: fix SRCU index corruption by requiring caller-provided storage
revocable: Add KUnit test for provider lifetime races
revocable: Fix races in revocable_alloc() using RCU
driver core: fix inverted "locked" suffix of driver_match_device()
rust: io: move MIN_SIZE and io_addr_assert to IoKnownSize
rust: pci: re-export ConfigSpace
rust: dma: allow drivers to tune max segment size
gpu: tyr: remove redundant `.as_ref()` for `dev_*` print
rust: auxiliary: use `pin_init::zeroed()` for device ID
rust: debugfs: use pin_init::zeroed() for file_operations
...
|
||
|
Wang Jiayue
|
bd9635c4d6 |
PM: sleep: wakeirq: Update outdated documentation comments
The comments claiming that dev_pm_*wake_irq*() helpers must be called
with dev->power.lock held and only from rpm_suspend/resume paths are not
accurate any mote, since pm_runtime_force_suspend/resume() call them
locklessly.
Update the comments to match the code.
Reported-by: Gui-Dong Han <hanguidong02@gmail.com>
Closes: https://lore.kernel.org/all/CAJZ5v0jN9fU9NdWqc-+F5hiSEP4JkR=_qcdGzzHtk1i5tvCDbQ@mail.gmail.com/
Fixes:
|
||
|
Linus Torvalds
|
d5cbd9f332 |
regmap: Updates for v7.0
The main change here is the implementation of a mechanism for generating register defaults via a callback rather than with a table in the driver. This is useful for devices where there are large ranges of registers with the same or generateable values, it allows us to have a small amount of code instead of a larger amount of default data. -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmmJ69gACgkQJNaLcl1U h9BWFAf+ICxKNiAtJWfApq09F2WNdsI8qtc9PQuf6wi1cGLTE/mc+nC7LAljP/YQ VqTJ67HEtKNlrmREdULKrn9rNhpZ24vPXr7VozScisR682muXqtoKhhiHfHfTKCt 47ptg4H3gppvsfXcPjxklsj3UCpv36nKZB9lKb18fTvDIwriwAU5e9P9JPtJ9fWc IQo2KvZ4ENnEiEX6RN9jBukSvS/a97+UtG+i8c0qBaqLm9jGOz7fWfxGsSKtflIu /JIqjsbGkA6Jo2Hz4rrIGi+anRPDNp0RFW6lSXrEWc2QU1aZgCXWEtBElxCbSYvc JDeU1pnKKAlpItXj91IgcV7rv4LJjQ== =sD3p -----END PGP SIGNATURE----- Merge tag 'regmap-v6.20' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap Pull regmap updates from Mark Brown: "The main change here is the implementation of a mechanism for generating register defaults via a callback rather than with a table in the driver. This is useful for devices where there are large ranges of registers with the same or generated values, it allows us to have a small amount of code instead of a larger amount of default data" * tag 'regmap-v6.20' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: regcache: Demote defaults readback from HW to debug print regmap: add KUnit coverage for reg_default_cb callback regmap: Add reg_default_cb callback for flat cache defaults regmap: Enable REGMAP when REGMAP_SLIMBUS is enabled |
||
|
Linus Torvalds
|
45bf4bc87c |
arm64 updates for 7.0
ACPI:
- Add interrupt signalling support to the AGDI handler.
- Add Catalin and myself to the arm64 ACPI MAINTAINERS entry.
CPU features:
- Drop Kconfig options for PAN and LSE (these are detected at runtime).
- Add support for 64-byte single-copy atomic instructions (LS64/LS64V).
- Reduce MTE overhead when executing in the kernel on Ampere CPUs.
- Ensure POR_EL0 value exposed via ptrace is up-to-date.
- Fix error handling on GCS allocation failure.
CPU frequency:
- Add CPU hotplug support to the FIE setup in the AMU driver.
Entry code:
- Minor optimisations and cleanups to the syscall entry path.
- Preparatory rework for moving to the generic syscall entry code.
Hardware errata:
- Work around Spectre-BHB on TSV110 processors.
- Work around broken CMO propagation on some systems with the SI-L1
interconnect.
Miscellaneous:
- Disable branch profiling for arch/arm64/ to avoid issues with noinstr.
- Minor fixes and cleanups (kexec + ubsan, WARN_ONCE() instead of
WARN_ON(), reduction of boolean expression).
- Fix custom __READ_ONCE() implementation for LTO builds when operating
on non-atomic types.
Perf and PMUs:
- Support for CMN-600AE.
- Be stricter about supported hardware in the CMN driver.
- Support for DSU-110 and DSU-120.
- Support for the cycles event in the DSU driver (alongside the
dedicated cycles counter).
- Use IRQF_NO_THREAD instead of IRQF_ONESHOT in the cxlpmu driver.
- Use !bitmap_empty() as a faster alternative to bitmap_weight().
- Fix SPE error handling when failing to resume profiling.
Selftests:
- Add support for the FORCE_TARGETS option to the arm64 kselftests.
- Avoid nolibc-specific my_syscall() function.
- Add basic test for the LS64 HWCAP.
- Extend fp-pidbench to cover additional workload patterns.
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Will Deacon:
"There's a little less than normal, probably due to LPC & Christmas/New
Year meaning that a few series weren't quite ready or reviewed in
time. It's still useful across the board, despite the only real
feature being support for the LS64 feature enabling 64-byte atomic
accesses to endpoints that support it.
ACPI:
- Add interrupt signalling support to the AGDI handler
- Add Catalin and myself to the arm64 ACPI MAINTAINERS entry
CPU features:
- Drop Kconfig options for PAN and LSE (these are detected at runtime)
- Add support for 64-byte single-copy atomic instructions (LS64/LS64V)
- Reduce MTE overhead when executing in the kernel on Ampere CPUs
- Ensure POR_EL0 value exposed via ptrace is up-to-date
- Fix error handling on GCS allocation failure
CPU frequency:
- Add CPU hotplug support to the FIE setup in the AMU driver
Entry code:
- Minor optimisations and cleanups to the syscall entry path
- Preparatory rework for moving to the generic syscall entry code
Hardware errata:
- Work around Spectre-BHB on TSV110 processors
- Work around broken CMO propagation on some systems with the SI-L1
interconnect
Miscellaneous:
- Disable branch profiling for arch/arm64/ to avoid issues with
noinstr
- Minor fixes and cleanups (kexec + ubsan, WARN_ONCE() instead of
WARN_ON(), reduction of boolean expression)
- Fix custom __READ_ONCE() implementation for LTO builds when
operating on non-atomic types
Perf and PMUs:
- Support for CMN-600AE
- Be stricter about supported hardware in the CMN driver
- Support for DSU-110 and DSU-120
- Support for the cycles event in the DSU driver (alongside the
dedicated cycles counter)
- Use IRQF_NO_THREAD instead of IRQF_ONESHOT in the cxlpmu driver
- Use !bitmap_empty() as a faster alternative to bitmap_weight()
- Fix SPE error handling when failing to resume profiling
Selftests:
- Add support for the FORCE_TARGETS option to the arm64 kselftests
- Avoid nolibc-specific my_syscall() function
- Add basic test for the LS64 HWCAP
- Extend fp-pidbench to cover additional workload patterns"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (43 commits)
perf/arm-cmn: Reject unsupported hardware configurations
perf: arm_spe: Properly set hw.state on failures
arm64/gcs: Fix error handling in arch_set_shadow_stack_status()
arm64: Fix non-atomic __READ_ONCE() with CONFIG_LTO=y
arm64: poe: fix stale POR_EL0 values for ptrace
kselftest/arm64: Raise default number of loops in fp-pidbench
kselftest/arm64: Add a no-SVE loop after SVE in fp-pidbench
perf/cxlpmu: Replace IRQF_ONESHOT with IRQF_NO_THREAD
arm64: mte: Set TCMA1 whenever MTE is present in the kernel
arm64/ptrace: Return early for ptrace_report_syscall_entry() error
arm64/ptrace: Split report_syscall()
arm64: Remove unused _TIF_WORK_MASK
kselftest/arm64: Add missing file in .gitignore
arm64: errata: Workaround for SI L1 downstream coherency issue
kselftest/arm64: Add HWCAP test for FEAT_LS64
arm64: Add support for FEAT_{LS64, LS64_V}
KVM: arm64: Enable FEAT_{LS64, LS64_V} in the supported guest
arm64: Provide basic EL2 setup for FEAT_{LS64, LS64_V} usage at EL0/1
KVM: arm64: Handle DABT caused by LS64* instructions on unsupported memory
KVM: arm64: Add documentation for KVM_EXIT_ARM_LDST64B
...
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||
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Linus Torvalds
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d16738a4e7 |
The kthread code provides an infrastructure which manages the preferred
affinity of unbound kthreads (node or custom cpumask) against housekeeping (CPU isolation) constraints and CPU hotplug events. One crucial missing piece is the handling of cpuset: when an isolated partition is created, deleted, or its CPUs updated, all the unbound kthreads in the top cpuset become indifferently affine to _all_ the non-isolated CPUs, possibly breaking their preferred affinity along the way. Solve this with performing the kthreads affinity update from cpuset to the kthreads consolidated relevant code instead so that preferred affinities are honoured and applied against the updated cpuset isolated partitions. The dispatch of the new isolated cpumasks to timers, workqueues and kthreads is performed by housekeeping, as per the nice Tejun's suggestion. As a welcome side effect, HK_TYPE_DOMAIN then integrates both the set from boot defined domain isolation (through isolcpus=) and cpuset isolated partitions. Housekeeping cpumasks are now modifiable with a specific RCU based synchronization. A big step toward making nohz_full= also mutable through cpuset in the future. -----BEGIN PGP SIGNATURE----- iQJPBAABCAA5FiEEd76+gtGM8MbftQlOhSRUR1COjHcFAmmE0mYbFIAAAAAABAAO bWFudTIsMi41KzEuMTEsMiwyAAoJEIUkVEdQjox36eMP/0Ls/ArfYVi/MNAXWlpy rAt6m9Y/X9GBcDM/VI9BXq1ZX4qEr2XjJ8UUb8cM08uHEAt0ErlmpRxREwJFrKbI H4jzg5EwO0D0c6MnvgQJEAwkHxQVIjsxG9DovRIjxyW4ycx3aSsRg/f2VKyWoLvY 7ZT7CbLFE+I/MQh2ZgUu/9pnCDQVR2anss2WYIej5mmgFL5pyEv3YvYgKYVyK08z sXyNxpP976g2d9ECJ9OtFJV9we6mlqxlG0MVCiv/Uxh7DBjxWWPsLvlmLAXggQ03 +0GW+nnutDaKz83pgS7Z4zum/+Oa+I1dTLIN27pARUNcMCYip7njM2KNpJwPdov3 +fAIODH2JVX1xewT+U1cCq6gdI55ejbwdQYGFV075dKBUxKQeIyrghvfC3Ga6aKQ Gw3y68jdrXOw6iyfHR5k/0Mnu2/FDKUW2fZxLKm55PvNZP5jQFmSlz9wyiwwyb3m UUSgThj6Ozodxks8hDX41rGVezCcm1ni+qNSiNIs8HPaaZQrwbnvKHQFBBJHQzJP rJ39VWBx3Hq/ly71BOR6pCzoZsfS1f85YKhJ4vsfjLO6BfhI16nBat89eROSRKcz XptyWqW0PgAD0teDuMCTPNuUym/viBHALXHKuSO12CIizacvftiGcmaQNPlLiiFZ /Dr2+aOhwYw3UD6djn3u94M9 =nWGh -----END PGP SIGNATURE----- Merge tag 'kthread-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks Pull kthread updates from Frederic Weisbecker: "The kthread code provides an infrastructure which manages the preferred affinity of unbound kthreads (node or custom cpumask) against housekeeping (CPU isolation) constraints and CPU hotplug events. One crucial missing piece is the handling of cpuset: when an isolated partition is created, deleted, or its CPUs updated, all the unbound kthreads in the top cpuset become indifferently affine to _all_ the non-isolated CPUs, possibly breaking their preferred affinity along the way. Solve this with performing the kthreads affinity update from cpuset to the kthreads consolidated relevant code instead so that preferred affinities are honoured and applied against the updated cpuset isolated partitions. The dispatch of the new isolated cpumasks to timers, workqueues and kthreads is performed by housekeeping, as per the nice Tejun's suggestion. As a welcome side effect, HK_TYPE_DOMAIN then integrates both the set from boot defined domain isolation (through isolcpus=) and cpuset isolated partitions. Housekeeping cpumasks are now modifiable with a specific RCU based synchronization. A big step toward making nohz_full= also mutable through cpuset in the future" * tag 'kthread-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks: (33 commits) doc: Add housekeeping documentation kthread: Document kthread_affine_preferred() kthread: Comment on the purpose and placement of kthread_affine_node() call kthread: Honour kthreads preferred affinity after cpuset changes sched/arm64: Move fallback task cpumask to HK_TYPE_DOMAIN sched: Switch the fallback task allowed cpumask to HK_TYPE_DOMAIN kthread: Rely on HK_TYPE_DOMAIN for preferred affinity management kthread: Include kthreadd to the managed affinity list kthread: Include unbound kthreads in the managed affinity list kthread: Refine naming of affinity related fields PCI: Remove superfluous HK_TYPE_WQ check sched/isolation: Remove HK_TYPE_TICK test from cpu_is_isolated() cpuset: Remove cpuset_cpu_is_isolated() timers/migration: Remove superfluous cpuset isolation test cpuset: Propagate cpuset isolation update to timers through housekeeping cpuset: Propagate cpuset isolation update to workqueue through housekeeping PCI: Flush PCI probe workqueue on cpuset isolated partition change sched/isolation: Flush vmstat workqueues on cpuset isolated partition change sched/isolation: Flush memcg workqueues on cpuset isolated partition change cpuset: Update HK_TYPE_DOMAIN cpumask from cpuset ... |
||
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Johan Hovold
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21bab79134 |
Revert "revocable: Revocable resource management"
This reverts commit
|
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Johan Hovold
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7149ce34dd |
Revert "revocable: Add Kunit test cases"
This reverts commit
|
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Greg Kroah-Hartman
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f55ae0bfa0 |
driver core: remove device_change_owner() export
The function, device_change_owner() is exported for modules to use, but there are no in-kernel users of it, so remove the export to prevent out-of-tree code from thinking this is a safe function to call. Reviewed-by: Danilo Krummrich <dakr@kernel.org> Reviewed-by: Rafael J. Wysocki (Intel) <rafael@kernel.org> Link: https://patch.msgid.link/2026020543-molar-childcare-af20@gregkh Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Rafael J. Wysocki
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c233403593 |
Merge branch 'pm-sleep'
Merge updates related to system suspend and hibernation for 6.20-rc1/7.0-rc1: - Stop flagging the PM runtime workqueue as freezable to avoid system suspend and resume deadlocks in subsystems that assume asynchronous runtime PM to work during system-wide PM transitions (Rafael Wysocki) - Drop redundant NULL pointer checks before acomp_request_free() from the hibernation code handling image saving (Rafael Wysocki) - Update wakeup_sources_walk_start() to handle empty lists of wakeup sources as appropriate (Samuel Wu) - Make dev_pm_clear_wake_irq() check the power.wakeirq value under power.lock to avoid race conditions (Gui-Dong Han) - Avoid bit field races related to power.work_in_progress in the core device suspend code (Xuewen Yan) * pm-sleep: PM: sleep: core: Avoid bit field races related to work_in_progress PM: sleep: wakeirq: harden dev_pm_clear_wake_irq() against races PM: wakeup: Handle empty list in wakeup_sources_walk_start() PM: hibernate: Drop NULL pointer checks before acomp_request_free() PM: sleep: Do not flag runtime PM workqueue as freezable |
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Greg Kroah-Hartman
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c5048ddee9 |
driver core: disable revocable code from build
The revocable code is still under active discussion, and there is no in-kernel users of it. So disable it from the build for now so that no one suffers from it being present in the tree, yet leave it in the source tree so that others can easily test it by reverting this commit and building off of it for future releases. Acked-by: Danilo Krummrich <dakr@kernel.org> Link: https://patch.msgid.link/2026020307-rimmed-dreamy-5a67@gregkh Reviewed-by: Tzung-Bi Shih <tzungbi@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Gui-Dong Han
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5c9ecd8e64 |
PM: sleep: wakeirq: harden dev_pm_clear_wake_irq() against races
dev_pm_clear_wake_irq() currently uses a dangerous pattern where
dev->power.wakeirq is read and checked for NULL outside the lock.
If two callers invoke this function concurrently, both might see
a valid pointer and proceed. This could result in a double-free
when the second caller acquires the lock and tries to release the
same object.
Address this by removing the lockless check of dev->power.wakeirq.
Instead, acquire dev->power.lock immediately to ensure the check and
the subsequent operations are atomic. If dev->power.wakeirq is NULL
under the lock, simply unlock and return. This guarantees that
concurrent calls cannot race to free the same object.
Based on a quick scan of current users, I did not find an actual bug as
drivers seem to rely on their own synchronization. However, since
asynchronous usage patterns exist (e.g., in
drivers/net/wireless/ti/wlcore), I believe a race is theoretically
possible if the API is used less carefully in the future. This change
hardens the API to be robust against such cases.
Fixes:
|
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Frederic Weisbecker
|
4a062d33cd |
driver core: cpu: Convert /sys/devices/system/cpu/isolated to use HK_TYPE_DOMAIN_BOOT
Make sure /sys/devices/system/cpu/isolated only prints what was passed through the isolcpus= parameter before HK_TYPE_DOMAIN will also integrate cpuset isolated partitions. Signed-off-by: Frederic Weisbecker <frederic@kernel.org> Cc: Danilo Krummrich <dakr@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Marco Crivellari <marco.crivellari@suse.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rafael J. Wysocki <rafael@kernel.org> Cc: Tejun Heo <tj@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Waiman Long <longman@redhat.com> |
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Tzung-Bi Shih
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988357628c |
revocable: Add KUnit test for concurrent access
Add a test case to verify correct synchronization between concurrent readers and a revocation. The test setup involves: 1. Consumer 1 enters the critical section (SRCU read lock) and verifies access to the resource. 2. Provider attempts to revoke the resource. This should block until Consumer 1 releases the lock. 3. Consumer 2 attempts to enter the critical section while revocation is pending. It should see the resource as revoked (NULL). 4. Consumer 1 exits, allowing the revocation to complete. This ensures that the SRCU mechanism correctly enforces grace periods and that new readers are properly prevented from accessing the resource once revocation has begun. A way to run the test: $ ./tools/testing/kunit/kunit.py run \ --kconfig_add CONFIG_REVOCABLE_KUNIT_TEST=y \ --kconfig_add CONFIG_PROVE_LOCKING=y \ --kconfig_add CONFIG_DEBUG_KERNEL=y \ --kconfig_add CONFIG_DEBUG_INFO=y \ --kconfig_add CONFIG_DEBUG_INFO_DWARF5=y \ --kconfig_add CONFIG_KASAN=y \ --kconfig_add CONFIG_DETECT_HUNG_TASK=y \ --kconfig_add CONFIG_DEFAULT_HUNG_TASK_TIMEOUT="10" \ --arch=x86_64 --raw_output=all \ revocable_test Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org> Link: https://patch.msgid.link/20260129143733.45618-5-tzungbi@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Tzung-Bi Shih
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377563ce06 |
revocable: fix SRCU index corruption by requiring caller-provided storage
The struct revocable handle stores the SRCU read-side index (idx) for the duration of a resource access. If multiple threads share the same struct revocable instance, they race on writing to the idx field, corrupting the SRCU state and potentially causing unsafe unlocks. Refactor the API to replace revocable_alloc()/revocable_free() with revocable_init()/revocable_deinit(). This change requires the caller to provide the storage for struct revocable. By moving storage ownership to the caller, the API ensures that concurrent users maintain their own private idx storage, eliminating the race condition. Reported-by: Johan Hovold <johan@kernel.org> Closes: https://lore.kernel.org/all/20260124170535.11756-4-johan@kernel.org/ Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org> Link: https://patch.msgid.link/20260129143733.45618-4-tzungbi@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Tzung-Bi Shih
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a243f7fb11 |
revocable: Add KUnit test for provider lifetime races
Add a test to verify that revocable_alloc() correctly handles race conditions where the provider is being released. The test covers three scenarios: 1. Allocating from a NULL provider. 2. Allocating from a provider that has been detached (pointer is NULL). 3. Allocating from a provider that is in the process of destruction (refcount is 0), simulating a race between revocable_alloc() and revocable_provider_release(). A way to run the test: $ ./tools/testing/kunit/kunit.py run \ --kconfig_add CONFIG_REVOCABLE_KUNIT_TEST=y \ --kconfig_add CONFIG_PROVE_LOCKING=y \ --kconfig_add CONFIG_DEBUG_KERNEL=y \ --kconfig_add CONFIG_DEBUG_INFO=y \ --kconfig_add CONFIG_DEBUG_INFO_DWARF5=y \ --kconfig_add CONFIG_KASAN=y \ --kconfig_add CONFIG_DETECT_HUNG_TASK=y \ --kconfig_add CONFIG_DEFAULT_HUNG_TASK_TIMEOUT="10" \ --arch=x86_64 --raw_output=all \ revocable_test Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org> Link: https://patch.msgid.link/20260129143733.45618-3-tzungbi@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Tzung-Bi Shih
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4d7dc4d1a6 |
revocable: Fix races in revocable_alloc() using RCU
There are two race conditions when allocating a revocable instance: 1. After a struct revocable_provider is revoked, the caller might still hold a dangling pointer to it. A subsequent call to revocable_alloc() can trigger a use-after-free. 2. If revocable_provider_release() runs concurrently with revocable_alloc(), the memory of struct revocable_provider can be accessed during or after kfree(). To fix these: - Manage the lifetime of struct revocable_provider using RCU. Annotate pointers to it with __rcu and use kfree_rcu() for deallocation. - Update revocable_alloc() to safely acquire a reference using RCU primitives. - Update revocable_provider_revoke() to take a double pointer (`**rp`). It atomically NULLs out the caller's pointer before starting revocation. This prevents the caller from holding a dangling pointer. - Drop devm_revocable_provider_alloc(). The devm-managed model cannot support the required double-pointer semantic for safe pointer nulling. Reported-by: Johan Hovold <johan@kernel.org> Closes: https://lore.kernel.org/all/aXdy-b3GOJkzGqYo@hovoldconsulting.com/ Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org> Link: https://patch.msgid.link/20260129143733.45618-2-tzungbi@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Samuel Wu
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75ce02f4bc |
PM: wakeup: Handle empty list in wakeup_sources_walk_start()
In the case of an empty wakeup_sources list, wakeup_sources_walk_start()
will return an invalid but non-NULL address. This also affects wrappers
of the aforementioned function, like for_each_wakeup_source().
Update wakeup_sources_walk_start() to return NULL in case of an empty
list.
Fixes:
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Danilo Krummrich
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289b14592c |
driver core: fix inverted "locked" suffix of driver_match_device()
In the current implementation driver_match_device() expects the device
lock to be held, while driver_match_device_locked() acquires the device
lock.
By convention it should be the other way around, hence swap the name of
both functions.
Fixes:
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Mark Brown
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4651c87b00
|
regmap: reg_default_cb for flat cache defaults
Merge series from "Sheetal ." <sheetal@nvidia.com>: This series adds a reg_default_cb callback for REGCACHE_FLAT to provide defaults for registers not listed in reg_defaults. Defaults are loaded eagerly during regcache init and the callback can use writeable_reg to filter valid addresses and avoid holes. |
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Marek Vasut
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6ffdc7eb48
|
regcache: Demote defaults readback from HW to debug print
Since commit
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Sheetal
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70a65c53d2
|
regmap: add KUnit coverage for reg_default_cb callback
Add a flat-cache KUnit test that verifies reg_defaults are honored while missing entries are populated via the reg_default_cb callback without hardware reads. This exercises the new callback path added for REGCACHE_FLAT defaults. Test: ./tools/testing/kunit/kunit.py run regmap Result: ======== reg_default_callback_populates_flat_cache ======== [PASSED] flat-default @0x0 [PASSED] flat-default fast I/O @0x0 [PASSED] flat-default @0x2001 ==== [PASSED] reg_default_callback_populates_flat_cache ==== Signed-off-by: Sheetal <sheetal@nvidia.com> Link: https://patch.msgid.link/20260123095346.1258556-5-sheetal@nvidia.com Signed-off-by: Mark Brown <broonie@kernel.org> |
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Sheetal
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dc65b1ed4b
|
regmap: Add reg_default_cb callback for flat cache defaults
Commit
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Danilo Krummrich
|
559ac49154 |
Driver core fixes deferred from 6.19-rc7
[1, 2] were originally intended for -rc7. Patch [1] uncovered potential deadlocks that require a few driver fixes; [2] is one such fix. [1] https://patch.msgid.link/20260113162843.12712-1-hanguidong02@gmail.com [2] https://patch.msgid.link/20260121141215.29658-1-dakr@kernel.org -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQS2q/xV6QjXAdC7k+1FlHeO1qrKLgUCaXdn0AAKCRBFlHeO1qrK Lu0BAQDfaNgkqh55vA7C+meIUTKKEnARTsRHowRnex2zty0VVQEA/tExyJKy8QY4 pNe8ghYW6mmad/eY+pixYzaFacv7+ws= =CzPS -----END PGP SIGNATURE----- Merge tag 'driver-core-6.19-rc7-deferred' into driver-core-next Driver core fixes deferred from 6.19-rc7 [1, 2] were originally intended for -rc7. Patch [1] uncovered potential deadlocks that require a few driver fixes; [2] is one such fix. [1] https://patch.msgid.link/20260113162843.12712-1-hanguidong02@gmail.com [2] https://patch.msgid.link/20260121141215.29658-1-dakr@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
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Danilo Krummrich
|
eb3dad518e |
Linux 6.19-rc7
-----BEGIN PGP SIGNATURE----- iQFSBAABCgA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAml2lQweHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiG0dcH/2yLU3IKlHSSgEDL Qq3oBuRK/zoVOdy+CM+TmTdl2d1LnBd8J547xFStB7kVGf5mEkdFZdHLBSHRnKDf ia1SGec06kyLpRX6x5T6FsfwOhkBmVsp59X0coM57QWxxenybugtzPvDO2TQ8/G4 buixJI0jJVgwRwXNzWB4n2W6FxNGui2A7gEN2mjtvkM2t/aDkiDjEqB8ve0pZJX9 4EWhxOgRFzwWgkd/bY+4wgXVXEt3GtI+3VvNncRqLIO00A/AnZOYmH4S2RQUDszD IbyDscYYxloZcZMDXc3PN2WgD9DCGKuP3GpJGsOHbl0DN6JkqI9nwGsOFZKGVOeF vbajwPE= =iAOa -----END PGP SIGNATURE----- Merge tag 'v6.19-rc7' into driver-core-next We need the driver-core fixes in here as well to build on top of. Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
||
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Linus Torvalds
|
5dbeeb268b |
Driver core fixes for 6.19-rc7
- Always inline I/O and IRQ methods using build_assert!() to avoid
false positive build errors.
- Do not free the driver's device private data in I2C shutdown()
avoiding race conditions that can lead to UAF bugs.
- Drop the driver's device private data after the driver has been
fully unbound from its device to avoid UAF bugs from &Device<Bound>
scopes, such as IRQ callbacks.
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Merge tag 'driver-core-6.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core
Pull driver core fixes from Danilo Krummrich:
- Always inline I/O and IRQ methods using build_assert!() to avoid
false positive build errors
- Do not free the driver's device private data in I2C shutdown()
avoiding race conditions that can lead to UAF bugs
- Drop the driver's device private data after the driver has been
fully unbound from its device to avoid UAF bugs from &Device<Bound>
scopes, such as IRQ callbacks
* tag 'driver-core-6.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core:
rust: driver: drop device private data post unbind
rust: driver: add DriverData type to the DriverLayout trait
rust: driver: add DEVICE_DRIVER_OFFSET to the DriverLayout trait
rust: driver: introduce a DriverLayout trait
rust: auxiliary: add Driver::unbind() callback
rust: i2c: do not drop device private data on shutdown()
rust: irq: always inline functions using build_assert with arguments
rust: io: always inline functions using build_assert with arguments
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Danilo Krummrich
|
08a5579224 |
driver-core: move devres_for_each_res() to base.h
devres_for_each_res() is only used by .../firmware_loader/main.c, which already includes base.h. The usage of devres_for_each_res() by code outside of driver-core is questionable, hence move it to base.h. Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://patch.msgid.link/20260119162920.77189-1-dakr@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
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Greg Kroah-Hartman
|
61b76d07d2 |
driver core: faux: stop using static struct device
faux_bus_root should not have been a static struct device, but rather a dynamically created structure so that lockdep and other testing tools do not trip over it (as well as being the right thing overall to do.) Fix this up by making it properly dynamic. Reported-by: Gui-Dong Han <hanguidong02@gmail.com> Closes: https://lore.kernel.org/lkml/CALbr=LYKJsj6cbrDLA07qioKhWJcRj+gW8=bq5=4ZvpEe2c4Yg@mail.gmail.com/ Reviewed-by: Danilo Krummrich <dakr@kernel.org> Link: https://patch.msgid.link/2026012145-lapping-countless-ef81@gregkh Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Tzung-Bi Shih
|
fdeb3ca3cc |
revocable: Remove redundant synchronize_srcu() call
When allocating a revocable provider via revocable_provider_alloc(), there is no revocable consumers (i.e., RCU readers) yet. Remove the redundant synchronize_srcu() call to save cycles. Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org> Link: https://patch.msgid.link/20260121040204.2699886-1-tzungbi@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Danilo Krummrich
|
c259cd7ea3 |
revocable: fix missing module license and description
Fix missing MODULE_LICENSE() and MODULE_DESCRIPTION() in the revocable
Kunit test module.
Reported-by: Mark Brown <broonie@kernel.org>
Closes: https://lore.kernel.org/all/aW6GNvuQVNCUcoy-@sirena.org.uk/
Fixes:
|
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Bartosz Golaszewski
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eb9eb4db98 |
driver core: make pinctrl_bind_pins() private
pinctrl_bind_pins() is only used by driver core (as it should). Move it out of the public header into base.h. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Danilo Krummrich <dakr@kernel.org> Signed-off-by: Linus Walleij <linusw@kernel.org> |
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Daniel Gomez
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7a96ccc82c |
driver core: attribute_container: change return type to void
attribute_container_register() has always returned 0 since its
introduction in commit 06ff5a987e ("Add attribute container to generic
device model") in the historical Linux tree [1]. Convert the return type
to void and update all callers.
This removes dead code where callers checked for errors that could never
occur.
Link: https://git.kernel.org/pub/scm/linux/kernel/git/tglx/history.git [1]
Signed-off-by: Daniel Gomez <da.gomez@samsung.com>
Link: https://patch.msgid.link/20251220-dev-attribute-container-linux-scsi-v1-1-d58fcd03bf21@samsung.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Thorsten Blum
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5f62af9fd2 |
devtmpfs: Replace simple_strtoul with kstrtoint in mount_param
Replace simple_strtoul() with the recommended kstrtoint() for parsing the 'devtmpfs.mount=' boot parameter. Unlike simple_strtoul(), which returns an unsigned long, kstrtoint() converts the string directly to int and avoids implicit casting. Check the return value of kstrtoint() and reject invalid values. This adds error handling while preserving behavior for existing values, and removes use of the deprecated simple_strtoul() helper. The current code silently sets 'mount_dev = 0' if parsing fails, instead of leaving the default value (IS_ENABLED(CONFIG_DEVTMPFS_MOUNT)) unchanged. Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev> Link: https://patch.msgid.link/20251220125930.76836-2-thorsten.blum@linux.dev Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Ben Dooks
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99aa03f98c |
devtmpfs: make 'devtmpfs_context_ops' static
The 'devtmpfs_context_ops' object is not exported outside the devtmpfs.c file nor defined anywhere for use outside. Make this static to remove the following sparse warning: drivers/base/devtmpfs.c:88:30: warning: symbol 'devtmpfs_context_ops' was not declared. Should it be static? Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Link: https://patch.msgid.link/20260116150745.1330145-1-ben.dooks@codethink.co.uk Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Tzung-Bi Shih
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cd7693419b |
revocable: Add Kunit test cases
Add Kunit test cases for the revocable API.
The test cases cover the following scenarios:
- Basic: Verifies that a consumer can successfully access the resource
provided via the provider.
- Revocation: Verifies that after the provider revokes the resource,
the consumer correctly receives a NULL pointer on a subsequent access.
- Try Access Macro: Same as "Revocation" but uses the
REVOCABLE_TRY_ACCESS_WITH() and REVOCABLE_TRY_ACCESS_SCOPED().
A way to run the test:
$ ./tools/testing/kunit/kunit.py run \
--kconfig_add CONFIG_REVOCABLE_KUNIT_TEST=y \
revocable_test
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://patch.msgid.link/20260116080235.350305-3-tzungbi@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Tzung-Bi Shih
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62eb557580 |
revocable: Revocable resource management
Some resources can be removed asynchronously, for example, resources provided by a hot-pluggable device like USB. When holding a reference to such a resource, it's possible for the resource to be removed and its memory freed, leading to use-after-free errors on subsequent access. The "revocable" mechanism addresses this by establishing a weak reference to a resource that might be freed at any time. It allows a resource consumer to safely attempt to access the resource, guaranteeing that the access is valid for the duration of its use, or it fails safely if the resource has already been revoked. The implementation uses a provider/consumer model built on Sleepable RCU (SRCU) to guarantee safe memory access: - A resource provider, such as a driver for a hot-pluggable device, allocates a struct revocable_provider and initializes it with a pointer to the resource. - A resource consumer that wants to access the resource allocates a struct revocable which acts as a handle containing a reference to the provider. - To access the resource, the consumer uses revocable_try_access(). This function enters an SRCU read-side critical section and returns the pointer to the resource. If the provider has already freed the resource, it returns NULL. After use, the consumer calls revocable_withdraw_access() to exit the SRCU critical section. The REVOCABLE_TRY_ACCESS_WITH() and REVOCABLE_TRY_ACCESS_SCOPED() are convenient helpers for doing that. - When the provider needs to remove the resource, it calls revocable_provider_revoke(). This function sets the internal resource pointer to NULL and then calls synchronize_srcu() to wait for all current readers to finish before the resource can be completely torn down. Acked-by: Danilo Krummrich <dakr@kernel.org> Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org> Link: https://patch.msgid.link/20260116080235.350305-2-tzungbi@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Gui-Dong Han
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dc23806a7c |
driver core: enforce device_lock for driver_match_device()
Currently, driver_match_device() is called from three sites. One site
(__device_attach_driver) holds device_lock(dev), but the other two
(bind_store and __driver_attach) do not. This inconsistency means that
bus match() callbacks are not guaranteed to be called with the lock
held.
Fix this by introducing driver_match_device_locked(), which guarantees
holding the device lock using a scoped guard. Replace the unlocked calls
in bind_store() and __driver_attach() with this new helper. Also add a
lock assertion to driver_match_device() to enforce this guarantee.
This consistency also fixes a known race condition. The driver_override
implementation relies on the device_lock, so the missing lock led to the
use-after-free (UAF) reported in Bugzilla for buses using this field.
Stress testing the two newly locked paths for 24 hours with
CONFIG_PROVE_LOCKING and CONFIG_LOCKDEP enabled showed no UAF recurrence
and no lockdep warnings.
Cc: stable@vger.kernel.org
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220789
Suggested-by: Qiu-ji Chen <chenqiuji666@gmail.com>
Signed-off-by: Gui-Dong Han <hanguidong02@gmail.com>
Fixes:
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Danilo Krummrich
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a995fe1a3a |
rust: driver: drop device private data post unbind
Currently, the driver's device private data is allocated and initialized from driver core code called from bus abstractions after the driver's probe() callback returned the corresponding initializer. Similarly, the driver's device private data is dropped within the remove() callback of bus abstractions after calling the remove() callback of the corresponding driver. However, commit |