Punching a hole after a large buffered write may leave the range
reported as data. Reproduce it with:
xfs_io -f \
-c "pwrite -b 3m -S 0x61 0 3m" \
-c "fpunch 1m 1m" \
-c "seek -h 0" \
-c "seek -d 1m" \
/mnt/test/repro
Punching 1 MiB at offset 1 MiB should produce:
0 1 MiB 2 MiB 3 MiB
| DATA | HOLE | DATA | EOF
Instead, the entire file is reported as data. SEEK_HOLE(0) returns EOF,
and SEEK_DATA(1M) returns 1M.
This happens because a dirty folio spanning the punched range can be
written back after the punch and refill the hole.
Fix this by flushing and waiting for dirty data in the punched range
before invalidating the page cache and issuing FSCTL_SET_ZERO_DATA.
The xfstests generic/539 pass against Samba/ksmbd with this change.
Signed-off-by: Huiwen He <hehuiwen@kylinos.cn>
Reviewed-by: ChenXiaoSong <chenxiaosong@kylinos.cn>
Signed-off-by: Steve French <stfrench@microsoft.com>
Replace EXPORT_SYMBOL_FOR_MODULES() with EXPORT_SYMBOL_IF_KUNIT()
to mark the symbols as visible only if CONFIG_KUNIT is enabled.
Kunit test should import the namespace EXPORTED_FOR_KUNIT_TESTING to
use these marked symbols. This is the standard way for all KUnit
tests.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: ChenXiaoSong <chenxiaosong@kylinos.cn>
Signed-off-by: Steve French <stfrench@microsoft.com>
Replace EXPORT_SYMBOL_FOR_MODULES() with EXPORT_SYMBOL_IF_KUNIT()
to mark the symbols as visible only if CONFIG_KUNIT is enabled.
Kunit test should import the namespace EXPORTED_FOR_KUNIT_TESTING to
use these marked symbols. This is the standard way for all KUnit
tests.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: ChenXiaoSong <chenxiaosong@kylinos.cn>
Signed-off-by: Steve French <stfrench@microsoft.com>
Since commit 7dadeaa6e8 ("sched: Further restrict the preemption
modes"), powerpc always has CONFIG_PREEMPTION because only
CONFIG_PREEMPT and CONFIG_PREEMPT_LAZY are possible, even in
dynamic preemption mode (see sched_dynamic_mode).
As a consequence, need_irq_preemption() is always true and can be
removed.
And because commit bee25f97ad ("powerpc: Enable GENERIC_ENTRY
feature") includes linux/irq-entry-common.h which already declares
sk_dynamic_irqentry_exit_cond_resched static key, asm/preempt.h
becauses useless and can be removed.
Signed-off-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org>
Reviewed-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/2bf10a0afffefb6aca44bf2f864cc17471a80e31.1781870889.git.chleroy@kernel.org
When using device tree CPU features (dt-cpu-ftrs), the kernel bypasses
the traditional cputable-based CPU identification and instead derives
CPU features from the device tree's "ibm,powerpc-cpu-features" node
provided by firmware.
However, CPU_FTR_P11_PVR is a kernel-internal feature flag used to
identify Power11 and later processors, and is not represented in the
device tree's ISA feature set. While ISA v3.1 support (indicated by
CPU_FTR_ARCH_31) is present on both Power10 and Power11, the
CPU_FTR_P11_PVR flag is specifically needed by code that must
distinguish between Power10 and Power11 processors.
Without this flag set, code that checks for Power11 using
cpu_has_feature(CPU_FTR_P11_PVR) will incorrectly return false on
Power11+ systems using dt-cpu-ftrs, leading to incorrect behavior.
This issue manifests specifically in powernv environments (bare-metal
or QEMU TCG with powernv machine type), where skiboot/OPAL firmware
provides the "ibm,powerpc-cpu-features" node, causing the kernel to
use dt-cpu-ftrs. The issue does not affect pseries guests, where SLOF
firmware does not provide this node, causing the kernel to fall back
to the traditional cputable path (identify_cpu) which correctly sets
CPU_FTR_P11_PVR during PVR-based CPU identification.
In powernv TCG guests, the missing flag causes KVM code to trigger
warnings when attempting to create KVM guests, as cpu_features shows
0x000c00eb8f4fb187 (missing bit 53) instead of the correct
0x002c00eb8f4fb187 (with bit 53 set).
Fix this by setting CPU_FTR_P11_PVR for all processors with
PVR >= PVR_POWER11 when ISA v3.1 support is detected in
cpufeatures_setup_start(). This approach ensures forward
compatibility with future processor generations.
Fixes: 96e266e3bc ("KVM: PPC: Book3S HV: Add Power11 capability support for Nested PAPR guests")
Cc: stable@vger.kernel.org # v6.13+
Signed-off-by: Amit Machhiwal <amachhiw@linux.ibm.com>
Reviewed-by: Mukesh Kumar Chaurasiya (IBM) <mkchauras@gmail.com>
Reviewed-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260614173437.26352-1-amachhiw@linux.ibm.com
mask_user_address() incorrectly checks for CONFIG_E500 instead of
CONFIG_PPC_E500, causing mask_user_address_isel() to not be used on
E500 hardware. Fix the check to use the correct name.
Fixes: 861574d51b ("powerpc/uaccess: Implement masked user access")
Cc: stable@vger.kernel.org # 7.0+
Signed-off-by: Ethan Nelson-Moore <enelsonmoore@gmail.com>
Fixes: 861574d51b ("powerpc/uaccess: Implement masked user access")
Reviewed-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260615233729.29386-1-enelsonmoore@gmail.com
It was observed that /proc/stat had very large value for one ore more
CPUs. It was more visible after recent code simplifications around
cpustats.
System has 240 CPUs.
cat /proc/uptime;
194.18 46500.55
cat /proc/stat
cpu 5966 39 837032887 4650070 164 185 100 0 0 0
cpu0 108 0 837030890 19109 24 4 23 0 0 0
Since uptime is 194s, system time of each CPU can't be more than 19400.
Sum of system time of all CPUs can't be more than 19400*240 4656000.
In fact huge value is close to mftb(). Note mftb doesn't reset on powerVM
when the LPAR restart. It only resets when whole system resets. The same
issue exists for kexec too.
This happens since starttime is not setup at init time. Once it is set
then subsequent vtime_delta will return the right delta.
Fix it by initializing the starttime during CPU initialization. This
fixes the large times seen.
cat /proc/uptime; cat /proc/stat
15.78 3694.63
cpu 6035 35 1347 369479 23 144 49 0 0 0
cpu0 19 0 38 1508 0 1 14 0 0 0
Now, system time is reported as expected.
Fixes: cf9efce0ce ("powerpc: Account time using timebase rather than PURR")
Reviewed-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org>
Suggested-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org>
Signed-off-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260605124329.377533-1-sshegde@linux.ibm.com
Add fsl,ifc to mpc85xx_common_ids so that of_platform_bus_probe
creates a platform device for the IFC node even without 'simple-bus'
in its compatible property. On P1010 and similar platforms the IFC
node is a direct child of the root, so it must be explicitly matched
to be populated.
Fixes: 0bf51cc9e9 ("powerpc: dts: mpc85xx: remove "simple-bus" compatible from ifc node")
Assisted-by: opencode:big-pickle
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260604043309.91280-1-rosenp@gmail.com
When CONFIG_RISCV_USER_CFI is enabled, the CFI version of the vDSO, has
a CFI landing pad instruction at the start of __vdso_rt_sigreturn. This
breaks libgcc's unwinding code which matches on the first two
instructions. Other unwinders that rely on similar instruction matching
may also be affected.
Since __vdso_rt_sigreturn is reached as part of signal-return handling
rather than via an indirect call/jump from userspace, it does not need a
CFI landing pad. Remove it and restore the instruction sequence expected
by existing unwinding code.
This matches what was done on arm64 in commit 9a96428557 ("arm64:
vdso: Don't prefix sigreturn trampoline with a BTI C instruction") for a
similar issue.
Cc: stable@vger.kernel.org
Fixes: 37f57bd3fa ("arch/riscv: compile vdso with landing pad and shadow stack note")
Co-authored-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Link: https://patch.msgid.link/20260623204058.498120-1-aurelien@aurel32.net
[pjw@kernel.org: fixed comment style]
Signed-off-by: Paul Walmsley <pjw@kernel.org>
amdxdna_cmd_submit() calls xdna->dev_info->ops->cmd_submit()
unconditionally, but only aie2_dev_ops defines that callback.
aie4_vf_ops (the AIE4 SR-IOV virtual function) does not, so a user
AMDXDNA_EXEC_CMD ioctl on an AIE4 device reaches a NULL function-pointer
call and oopses the kernel. AIE4 submits work through a mapped user queue
and doorbell, not this ioctl path.
Reject the submission early with -EOPNOTSUPP when the device provides no
cmd_submit op, so the shared EXEC ioctl is a clean no-op on such devices.
Fixes: aac243092b ("accel/amdxdna: Add command execution")
Cc: stable@vger.kernel.org
Found by 0sec automated security-research tooling (https://0sec.ai).
Assisted-by: 0sec:claude-opus-4-8
Signed-off-by: Doruk Tan Ozturk <doruk@0sec.ai>
Reviewed-by: Lizhi Hou <lizhi.hou@amd.com>
Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
Link: https://patch.msgid.link/20260713173030.87541-3-doruk@0sec.ai
amdxdna_drm_submit_execbuf() passes the user-supplied command BO handle
straight into amdxdna_cmd_submit() with drv_cmd == NULL. When the handle
is AMDXDNA_INVALID_BO_HANDLE (0), the block that fetches job->cmd_bo is
skipped, leaving it NULL, and no check rejects it on the user path (the
!job->cmd_bo guard lives inside the != INVALID branch).
The job is then armed and pushed to the DRM scheduler.
aie2_sched_job_run() takes the drv_cmd == NULL path and calls
amdxdna_cmd_set_state(job->cmd_bo) -> amdxdna_gem_vmap(NULL) ->
to_gobj(NULL)->dev, a NULL pointer dereference in the drm_sched worker.
A process with access to the accel node on a system with a probed AMD NPU
can trigger a kernel oops with a single AMDXDNA_EXEC_CMD ioctl
(cmd_handles = 0).
Only internal driver commands (SYNC_DEBUG_BO / ATTACH_DEBUG_BO)
legitimately pass AMDXDNA_INVALID_BO_HANDLE, and they always set drv_cmd.
Reject the invalid handle for user submissions (drv_cmd == NULL) at the
submit choke point so every user path is covered.
Fixes: aac243092b ("accel/amdxdna: Add command execution")
Cc: stable@vger.kernel.org
Found by 0sec automated security-research tooling (https://0sec.ai).
Assisted-by: 0sec:claude-opus-4-8
Signed-off-by: Doruk Tan Ozturk <doruk@0sec.ai>
Reviewed-by: Lizhi Hou <lizhi.hou@amd.com>
Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
Link: https://patch.msgid.link/20260713173030.87541-2-doruk@0sec.ai
MediaTek mt65xx family SoCs have no auto restart, however, they still
support the WRRD mode in the hardware. Because auto_restart is set to 0,
the WRRD mode will be never enabled, leading to read errors.
Fix this by removing auto_restart check from the WRRD enable path.
Fixes: b492183652 ("i2c: mediatek: fix potential incorrect use of I2C_MASTER_WRRD")
Signed-off-by: Roman Vivchar <rva333@protonmail.com>
Cc: <stable@vger.kernel.org> # v6.18+
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260709-6572-6595-i2c-v2-1-b2fb8510d1d3@protonmail.com
The commit fixing the overlayfs mmap() and mprotect() access checks
failed to skip the execmem check in __file_map_prot_check() for the case
where the "mounter check" is being performed. This check should be
performed only against the credentials of the task that is calling
mmap()/mprotect(), since it doesn't pertain to the file itself, but
rather just gates the ability of the calling task to get an executable
memory mapping in general.
The purpose of the "mounter check" is to guard against using an
overlayfs mount to gain file access that would otherwise be denied to
the mounter. For execmem this is not relevant, as there is no further
file access granted based on it (notice that the file's context is not
used as the target in the check), so checking it also against the
mounter credentials would be incorrect.
Fix this by passing a boolean to [__]file_map_prot_check() and
selinux_mmap_file_common() that indicates if we are doing the "mounter
check" and skiping the execmem check in that case. Since this boolean
also indicates if we use current_cred() or the mounter cred as the
subject, also remove the "cred" argument from these functions and
determine it based on the boolean and the file struct.
Cc: stable@vger.kernel.org
Fixes: 82544d36b1 ("selinux: fix overlayfs mmap() and mprotect() access checks")
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Reviewed-by: Stephen Smalley <stephen.smalley.work@gmail.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
If devm_platform_get_and_ioremap_resource() returns an error,
mlxbf_i2c_init_resource() frees tmp_res before reading tmp_res->io to
get the error code. This results in a use-after-free.
Save the error code before freeing tmp_res.
Fixes: b5b5b32081 ("i2c: mlxbf: I2C SMBus driver for Mellanox BlueField SoC")
Signed-off-by: Xuanqiang Luo <luoxuanqiang@kylinos.cn>
Cc: <stable@vger.kernel.org> # v5.10+
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260714150808.85045-1-xuanqiang.luo@linux.dev
In stratix10_svc_drv_remove(), stratix10_svc_async_exit() was called
before client devices were unregistered. This created a race window
where child devices could still be issuing service requests through
the async channels after the async infrastructure had already been
torn down.
Unregister client devices before tearing down the async threads and
channels to ensure all in-flight service calls drain before the
underlying infrastructure is destroyed.
Fixes: bcb9f4f070 ("firmware: stratix10-svc: Add support for async communication")
Cc: stable@vger.kernel.org
Signed-off-by: Adrian Ng Ho Yin <adrian.ho.yin.ng@altera.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Define INTEL_SIP_SMC_STATUS_NO_RESPONSE (0x3) and handle it in
stratix10_svc_async_poll() the same way as INTEL_SIP_SMC_STATUS_BUSY,
returning -EAGAIN so callers can retry instead of treating the poll as
a hard failure.
When the Secure Device Manager has not yet produced a response for an
asynchronous transaction, ATF is expected to return
INTEL_SIP_SMC_STATUS_NO_RESPONSE. Without this handling, the service
layer maps the status to -EINVAL and async clients cannot distinguish
"not ready yet" from a real error.
Fixes: bcb9f4f070 ("firmware: stratix10-svc: Add support for async communication")
Cc: stable@vger.kernel.org
Signed-off-by: Adrian Ng Ho Yin <adrian.ho.yin.ng@altera.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
The internal digital microphone on the MSI Vector A16 HX A8WIG is not
detected: the ACP platform devices are created, but snd_soc_acp6x_mach
never binds because the machine is missing from the DMI quirk table, so
no capture device shows up at all.
This is the same board as the already supported "Vector A16 HX A8WHG",
differing only in the trailing model code. Add the corresponding entry.
Signed-off-by: Antonio Ignacio Campos Ruiz <acamposruiz@gmail.com>
Link: https://patch.msgid.link/20260713165709.19489-1-acamposruiz@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
In a full-duplex setup, when one direction (playback or capture) is
closed while the other is still running, imx_aif_shutdown() was
unconditionally calling snd_soc_dai_set_sysclk() with rate=0 for all
cpu/codec DAIs, which would disable the clock still needed by the
active stream.
Add snd_soc_dai_active() checks before clearing sysclk so that only
truly inactive DAIs have their clocks reset.
Fixes: 2260bc6ea8 ("ASoC: imx-card: Add WM8524 support")
Cc: stable@vger.kernel.org
Signed-off-by: Chancel Liu <chancel.liu@nxp.com>
Link: https://patch.msgid.link/20260710031333.3491445-1-chancel.liu@oss.nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Zero check unused SQE fields addr3 and pad2 for unlinkat. They're
not needed now, but could be used sometime in the future.
Signed-off-by: Yi Xie <xieyi@kylinos.cn>
Reviewed-by: Gabriel Krisman Bertazi <krisman@suse.de>
Link: https://patch.msgid.link/20260714030306.64820-1-xieyi@kylinos.cn
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The provided-buffer validation fix deferred freeing a cached iovec
until validation completed. However, the deferred free uses arg->iovs.
After a grow, that points to the newly allocated array. Without a grow,
it points to the cached array that remains in use.
This leaves the caller with a dangling iovec in both cases and can
result in repeated frees. Only free org_iovs when arg->iovs actually
replaced it.
Fixes: cd053d788c ("io_uring: fix dangling iovec after provided-buffer bundle grow failure")
Assisted-by: Codex:gpt-5.3-codex-spark
Signed-off-by: Jaeyeong Lee <iostreampy@proton.me>
Link: https://patch.msgid.link/20260712142612.188695595-iostreampy@proton.me
Signed-off-by: Jens Axboe <axboe@kernel.dk>
When iwl_pcie_tx_init() fails after RX init, nic init unwinds via
iwl_pcie_rx_free().
The freed RX members stayed non-NULL on the live transport object,
so later teardown or retry could touch stale RX state.
Set rx_pool, global_table, rxq, and alloc_page to NULL after free
to make repeated cleanup and retry paths safe.
Assisted-by: GitHubCopilot:gpt-5.3-codex
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Link: https://patch.msgid.link/20260714141909.33e8978d8b36.Ibaedd4b0ce01405b940de7b90223b6d2c5136ffd@changeid
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Scheduled scan built the probe request before iwl_mvm_scan_fits(),
so oversized IEs could be copied into the fixed preq buffer before
length validation. Move iwl_mvm_build_scan_probe() after the fits
check.
Also advertise max_sched_scan_ie_len using iwl_mvm_max_scan_ie_len()
so userspace limits account for driver-inserted DS/TPC bytes.
Assisted-by: GitHubCopilot:gpt-5.3-codex
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Link: https://patch.msgid.link/20260714141909.53d2722c79e7.Iebb922efa6173c92f14cd8aa8b4e7f372c0a0fb7@changeid
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
iwl_mld_thermal_zone_register() stores the thermal zone pointer in
mld->tzone before calling thermal_zone_device_enable(). If enable
fails, the code unregisters the zone but leaves mld->tzone stale,
so iwl_mld_thermal_zone_unregister() can unregister it again.
Clear mld->tzone after unregister in the error path.
While at it remove a pointless if in iwl_mld_thermal_zone_unregister
after we've alredy checked the tzone pointer is not NULL.
Assisted-by: GitHubCopilot:gpt-5.3-codex
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Link: https://patch.msgid.link/20260714141909.595dcb8cb7fe.I8125e4a2eeb0390798e3f4074c62c00443eda8e8@changeid
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
BA_WINDOW_STATUS_NOTIFICATION_ID extracts a 5-bit sta_id from the
firmware notification and uses it to index fw_id_to_mac_id[] without
bounds checking. Validate sta_id before array access to prevent
out-of-bounds indexing.
Assisted-by: GitHubCopilot:gpt-5.3-codex
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Link: https://patch.msgid.link/20260714141909.2e97f337f3cb.Ic3f0f404082ccdea13809a3c0b70e0f5417e1037@changeid
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
MCC response parsing read n_channels from v8/v4/v3 response variants
before ensuring the payload contained the fixed response header.
Add a minimum payload-length check for each response version before
reading n_channels, and keep the existing exact-size validation for the
channels array payload.
Assisted-by: GitHub Copilot:gpt-5.3-codex
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Link: https://patch.msgid.link/20260714141909.cb2cef3d3e7e.Iee7b48614289da576de842157ad3730b7589a4b1@changeid
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
The beacon TX notification can arrive in different layouts, and fields
must be read only after selecting the expected format.
Parse gp2 and TSF from the matching notification structure in each
branch, and keep using the parsed gp2 for CSA countdown and debug output.
Drop the obsolete cached gp2 field.
Assisted-by: GitHub Copilot:gpt-5.3-codex
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Link: https://patch.msgid.link/20260714141909.cc8aa937f8e5.I921f8dadcb20cb73e8283e1b8546e1778205411f@changeid
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Fix a harmless mistake in the wake packet management code in the d3
wakeup flow. If the FCS is truncated, we want to detect it, but we
cleared the icvlen before updating the truncated variable that holds the
number of bytes having been truncated.
Fix that.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Link: https://patch.msgid.link/20260714141909.369588f93c6b.I1a4d13f276c7e75514ab2032ae387873337470b8@changeid
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
In order to compure the size of the iwl_mcc_update_resp which has a
variable length, we need to know the number of channels.
In order to read the number of channels, we must first check the
payload is long enough to read at least that.
Add this check.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Link: https://patch.msgid.link/20260714141909.c2f644919011.Ic579e9935b92a674c96ccc44713140b5b4bc5d10@changeid
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
drm_gpusvm_get_pages() only stored the local dpagemap into
svm_pages->dpagemap on the success path. If a later page failed (e.g.
-EOPNOTSUPP when ctx->allow_mixed is false) and jumped to err_unmap,
svm_pages->dpagemap was still NULL, so __drm_gpusvm_unmap_pages() skipped
device_unmap() and leaked the device mappings already created.
Assign svm_pages->dpagemap when the first device page is mapped so the
err_unmap path can device_unmap() those mappings.
This issue was found by Sashiko AI review.
Fixes: f70da6f99d ("drm/gpusvm: pull out drm_gpusvm_pages substructure")
Cc: stable@vger.kernel.org
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Honglei Huang <honghuan@amd.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20260701062800.409248-4-honghuan@amd.com
In a mixed range: ctx->allow_mixed dpagemap is not NULL while some entries
are system pages. The unmap loop used:
dma_unmap_page(...);
else if (dpagemap && dpagemap->ops->device_unmap)
dpagemap->ops->device_unmap(...);
When use_iova is true the first condition is false for system pages,
so they fall through to device_unmap() and a system DMA address is
handed to the device specific unmap callback, risking invalid accesses
or state corruption.
Key the branch off addr->proto instead: system pages only need an explicit
dma_unmap_page() in the non IOVA case, IOVA system pages are already torn
down by the single dma_iova_destroy(), and only genuine device pages
reach device_unmap().
This issue was found by Sashiko AI review.
Fixes: 37ad039fb3 ("drm/gpusvm: Use dma-map IOVA alloc, link, and sync API in GPU SVM")
Cc: stable@vger.kernel.org
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Honglei Huang <honghuan@amd.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20260701062800.409248-3-honghuan@amd.com
dma_iova_try_alloc() reserves IOVA for the entire range, but in a mixed
range only the system pages are linked (their total size is state_offset)
while device pages never touch the IOVA state. dma_iova_destroy() with
state_offset only frees the linked part, permanently leaking the IOVA
reserved for the device pages and eventually exhausting the IOVA space.
Unlink the linked system-page portion and free the whole reserved IOVA
instead. On the get_pages() error path state_offset is 0 (no page linked,
dma_addr[0] unpopulated), so skip the unlink and just free the reservation;
this also avoids reading the uninitialized dma_addr[0].dir there.
Allocate the dma_addr array with the zeroing kvzalloc_objs() so every entry
has a well-defined value.
This issue was found by Sashiko AI review.
Fixes: 37ad039fb3 ("drm/gpusvm: Use dma-map IOVA alloc, link, and sync API in GPU SVM")
Cc: stable@vger.kernel.org
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Honglei Huang <honghuan@amd.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20260701062800.409248-2-honghuan@amd.com
regression fixes) or quirks accumulated since the last update.
Some highlights:
* USB-audio:
- Fix per-channel volume imbalance regression for sticky mixers
- Validate input packet length in caiaq driver
- Quirks for iBasso DC-Elite, Musical Fidelity M6s DAC, and Redragon
H510-PRO Wireless headset
* HD-audio:
- Fix a long-standing bug of cached processing coefficient verbs
- Make cs35l56 driver failing with missing firmware
- Fix cirrus codec Kconfig dependency, update MAINTAINERS
- Remove unneeded mic bias threshold override on Conexant
- Realtek codec quirks for ASUS ROG Ally X (headphone & mic), Dell
QCM1255, Legion Pro 7, HP/Victus laptops, Framework, and TongFang
laptops
* ASoC:
- Add Eliza audio support on Qualcomm sc8280xp/sm8250 SoCs
- Fix SDCA linker error with ACP on AMD
- A few fixes for AMD ACP PCI driver
- Add TAS2783 support on AMD ACP 7.0 platforms
- Reset RT712-SDCA codec to fix silent headphone issue
- Soft reset S/PDIF datapath on Meson AIU FIFO
- Jack report fix for cs42l43
- TAS2562 shutdown GPIO clearing fix
- Sidecar amps quirk for Lenovo laptop in SOF SDW driver
* Misc:
- Drop redundant mod_devicetable.h includes from FireWire drivers
- Fix memory leak and format mismatch in mixer kselftest
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Merge tag 'sound-7.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"A collection of small fixes. All are device-specific fixes (including
regression fixes) or quirks accumulated since the last update. Some
highlights:
USB-audio:
- Fix per-channel volume imbalance regression for sticky mixers
- Validate input packet length in caiaq driver
- Quirks for iBasso DC-Elite, Musical Fidelity M6s DAC, and Redragon
H510-PRO Wireless headset
HD-audio:
- Fix a long-standing bug of cached processing coefficient verbs
- Make cs35l56 driver failing with missing firmware
- Fix cirrus codec Kconfig dependency, update MAINTAINERS
- Remove unneeded mic bias threshold override on Conexant
- Realtek codec quirks for ASUS ROG Ally X (headphone & mic), Dell
QCM1255, Legion Pro 7, HP/Victus laptops, Framework, and TongFang
laptops
ASoC:
- Add Eliza audio support on Qualcomm sc8280xp/sm8250 SoCs
- Fix SDCA linker error with ACP on AMD
- A few fixes for AMD ACP PCI driver
- Add TAS2783 support on AMD ACP 7.0 platforms
- Reset RT712-SDCA codec to fix silent headphone issue
- Soft reset S/PDIF datapath on Meson AIU FIFO
- Jack report fix for cs42l43
- TAS2562 shutdown GPIO clearing fix
- Sidecar amps quirk for Lenovo laptop in SOF SDW driver
Misc:
- Drop redundant mod_devicetable.h includes from FireWire drivers
- Fix memory leak and format mismatch in mixer kselftest"
* tag 'sound-7.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (36 commits)
ALSA: usb-audio: Add delay quirk for iBasso DC-Elite
ALSA: hda: conexant: Remove mic bias threshold override
ALSA: hda/realtek: Fix speakers on Legion Pro 7 16ARX8H with codec SSID 17aa:38a7
ALSA: hda/realtek: Fix speakers on MECHREVO WUJIE Series
ALSA: hda: cs35l56: Fail if wmfw file is missing
ALSA: usb-audio: Skip DSD quirk for Musical Fidelity M6s DAC
ALSA: hda: MAINTAINERS: Fix missing cirrus* file reference
ALSA: hda/cirrus_scodec: Make Kconfig visible if KUNIT
ALSA: hda/realtek: Add quirk for TongFang X6xx45xU
ALSA: hda/realtek - Fixed Headphone noise issue for Dell QCM1255
ASoC: tas2562: fix deprecated 'shut-down' GPIO always cleared after lookup
ASoC: cs42l43: Correct report for forced microphone jack
ASoC: qcom: sc8280xp: Add support for Eliza
ASoC: dt-bindings: qcom,sm8250: Add Eliza sound card
ASoC: dt-bindings: qcom: Add Eliza LPASS macro codecs
ALSA: hda/realtek: Add mic mute LED quirk for HP Laptop 15-fd0xxx
ALSA: hda/realtek - Add quirk for HP Victus 15-fa0xxx (MB 8A50)
ALSA: usb-audio: Add quirk for Redragon H510-PRO Wireless headset
ASoC: amd: ps: replace bitwise OR with logical OR in IRQ return check
ASoC: amd: ps: fix wrong ACP version string in pci_request_regions()
...
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Merge tag 'for-7.2-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
- fix root structure leak after relocation error
- fix optimization when checksums are read from commit root, fall back
to checksum root during relocation
- in tree-checker, validate length of inode reference in items
- validate properties before setting them
- validate free space cache entries on load
- transaction abort fixes
- fix printing of internal trees as signed numbers
- add error messages after critical lzo compression errors
* tag 'for-7.2-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: print-tree: print header owner as signed
btrfs: decentralize transaction aborts in create_reloc_root()
btrfs: tree-checker: validate INODE_REF's namelen
btrfs: lzo: add error message for invalid headers
btrfs: fallback to transaction csum tree on a commit root csum miss
btrfs: fix root leak if its reloc root is unexpected in merge_reloc_roots()
btrfs: reject free space cache with more entries than pages
btrfs: fix transaction abort logic in btrfs_fileattr_set()
btrfs: validate properties before setting them
When the interrupt status register reads zero, the handler should
return IRQ_NONE instead of IRQ_HANDLED. What the return value
actually feeds into is the spurious interrupt accounting in
note_interrupt(): falsely claiming IRQ_HANDLED defeats the "irq XX:
nobody cared" detection, so a stuck interrupt source would never be
caught.
Fixes: 5ea558473f ("i2c: spacemit: add support for SpacemiT K1 SoC")
Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
Cc: <stable@vger.kernel.org> # v6.15+
Reviewed-by: Troy Mitchell <troy.mitchell@linux.spacemit.com>
Reviewed-by: Mukesh Savaliya <mukesh.savaliya@oss.qualcomm.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/ef8b623f45d4e430721e46572c2598d882044aed.1783667875.git.xiaopei01@kylinos.cn
Commit 280ea9c315 ("mm/slab: avoid allocating slabobj_ext array from
its own slab") avoided recursive allocation of obj_exts from kmalloc
caches of the same size, by bumping the obj_exts array's allocation
size whenever the array size equals the size of the object being
allocated.
However, as reported by Danielle Costantino and Shakeel Butt,
even slabs from kmalloc caches of different sizes can form a cycle
by allocating obj_exts arrays from each other [1]:
What happened: a KMALLOC_NORMAL slab's obj_exts array (used by
allocation profiling / memcg accounting) is itself kmalloc()'d from a
KMALLOC_NORMAL cache, so the "slab holds another slab's obj_exts array"
relation can form cycles. With sizeof(struct slabobj_ext) == 16 and
the host's geometry:
- kmalloc-512 has 64 objects/slab -> array is 64*16 == 1024 bytes,
served from kmalloc-1k;
- kmalloc-1k has 32 objects/slab -> array is 32*16 == 512 bytes,
served from kmalloc-512.
A kmalloc-512 slab and a kmalloc-1k slab therefore hold each other's
obj_exts array. Discarding one frees the other's array, which empties
and discards that slab, which frees the first's array, and so on:
__free_slab() -> free_slab_obj_exts() -> kfree() -> discard_slab() ->
__free_slab() recurses along the cycle until the stack is exhausted.
With memory allocation profiling, this allows unbounded recursion
in the free path and led to a stack overflow on a production host in
the Meta fleet [1]:
BUG: TASK stack guard page was hit
Oops: stack guard page
RIP: 0010:kfree+0x8/0x5d0
Call Trace:
__free_slab+0x66/0xc0
kfree+0x3f0/0x5d0
... ( ~125x __free_slab <-> kfree ) ...
<kernel driver freeing a resource>
do_syscall_64
It is proposed [1] to resolve this issue by always serving the obj_exts
array allocation from kmalloc caches (or large kmalloc) of sizes larger
than the object size. However, as pointed out by Vlastimil Babka [2],
this can waste an excessive amount of memory as slabs from large
kmalloc sizes (e.g. kmalloc-8k) generally need obj_exts arrays much
smaller than the object size.
Therefore, rather than bumping the size, let us take a different
approach; disallow formation of cycles between kmalloc types when
allocating obj_exts arrays. Currently, all obj_exts arrays are served
from normal kmalloc caches. Cycles cannot be created if obj_exts arrays
of normal kmalloc caches are served from a special kmalloc type that can
never have obj_exts arrays.
To achieve this, create a new kmalloc type called KMALLOC_NO_OBJ_EXT.
KMALLOC_NO_OBJ_EXT caches are created with SLAB_NO_OBJ_EXT flag when
either 1) memory allocation profiling is not permanently disabled,
or 2) kmalloc types with a priority higher than KMALLOC_CGROUP are
aliased with KMALLOC_NORMAL.
Sheaf bootstrapping for KMALLOC_NO_OBJ_EXT caches now must be deferred
because allocation of a barn can trigger obj_exts array allocation of
normal kmalloc caches when the KMALLOC_NO_OBJ_EXT cache for that size
is not ready yet. For simplicity, perform bootstrapping of sheaves for
all kmalloc caches later.
Introduce a new slab alloc flag, SLAB_ALLOC_NO_OBJ_EXT, to prevent
allocation of obj_exts arrays, and let kmalloc_slab() override the type
to KMALLOC_NO_OBJ_EXT when specified. Note that kmalloc_type() remains
unchanged because kmalloc_flags() bypasses the kmalloc fastpath.
Do not pass SLAB_ALLOC_NO_RECURSE to kmalloc_flags() in
alloc_slab_obj_exts() and instead use SLAB_ALLOC_NO_OBJ_EXT only when
the objects are allocated from normal kmalloc caches. While this
prevents unbounded recursive allocation of obj_exts, it allows
KMALLOC_NO_OBJ_EXT caches to have sheaves.
Since sheaf allocations specify SLAB_ALLOC_NO_RECURSE that prevents
allocation of both sheaves and obj_exts arrays, the recursion depth
is bounded.
obj_exts arrays for non-kmalloc-normal caches can now have a valid tag.
Do not call mark_obj_codetag_empty() when freeing an obj_exts array to
avoid false warnings. KMALLOC_NO_OBJ_EXT don't need this as they never
allocate those arrays.
Reported-by: Danielle Costantino <dcostantino@meta.com>
Reported-by: Shakeel Butt <shakeel.butt@linux.dev>
Closes: https://lore.kernel.org/linux-mm/20260625230029.703750-1-shakeel.butt@linux.dev [1]
Fixes: 4b87369646 ("mm/slab: add allocation accounting into slab allocation and free paths")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/linux-mm/c5c4208d-a6f0-413e-bad9-49be12f12d55@kernel.org [2]
Signed-off-by: Harry Yoo (Oracle) <harry@kernel.org>
Reviewed-by: Suren Baghdasaryan <surenb@google.com>
Link: https://patch.msgid.link/20260713-kmalloc-no-objext-v3-4-47c7bd138de7@kernel.org
Signed-off-by: Vlastimil Babka (SUSE) <vbabka@kernel.org>
mem_alloc_profiling_enabled() tells whether memalloc profiling is
currently enabled. However, even when this function returns false,
it can be enabled later.
However, this is not enough. Some optimizations can be applied only when
memalloc profiling is permanently disabled. For example, to skip the
creation of KMALLOC_NO_OBJ_EXT caches at boot time, mem_profiling must
be set to "never", "0" w/ debugging on, or have been shutdown so that
it can no longer be enabled.
Introduce mem_alloc_profiling_permanently_disabled() for this purpose.
Signed-off-by: Harry Yoo (Oracle) <harry@kernel.org>
Acked-by: Suren Baghdasaryan <surenb@google.com>
Link: https://patch.msgid.link/20260713-kmalloc-no-objext-v3-3-47c7bd138de7@kernel.org
Signed-off-by: Vlastimil Babka (SUSE) <vbabka@kernel.org>
Bootstrap caches are created with SLAB_NO_OBJ_EXT to disallow sheaves
and obj_exts.
To allow disabling obj_exts while allowing sheaves, decouple
SLAB_NO_SHEAVES from SLAB_NO_OBJ_EXT. Bootstrap caches now have both
SLAB_NO_SHEAVES and SLAB_NO_OBJ_EXT.
No functional change intended.
Reviewed-by: Vlastimil Babka (SUSE) <vbabka@kernel.org>
Signed-off-by: Harry Yoo (Oracle) <harry@kernel.org>
Reviewed-by: Suren Baghdasaryan <surenb@google.com>
Link: https://patch.msgid.link/20260713-kmalloc-no-objext-v3-2-47c7bd138de7@kernel.org
Signed-off-by: Vlastimil Babka (SUSE) <vbabka@kernel.org>
SMBus 3.1 6.5.7 allows a Block Read byte count of 0, but the
interrupt-driven block-read state machine rejects it as -EPROTO. Worse,
it returns without a NACK+STOP: the next receive cycle has already
started, so the target keeps holding SDA and the bus stays stuck until a
power cycle of this i2c controller.
Accept count=0: NACK the in-flight dummy byte (TXAK) and set msg->len to
2 so i2c_imx_isr_read_continue() emits STOP via its normal last-byte
path. The dummy byte is discarded; block-read callers only consume
buf[0..count-1].
Reading I2DR has likewise already armed the next byte on the
count > I2C_SMBUS_BLOCK_MAX error path, so NACK it (TXAK) before aborting
with -EPROTO; otherwise the failing transfer's STOP cannot complete and
the bus stays held.
The atomic path regressed earlier (v3.16) and is fixed separately; this
patch covers only the v6.13 state-machine rework.
Fixes: 5f5c2d4579 ("i2c: imx: prevent rescheduling in non dma mode")
Signed-off-by: Vincent Jardin <vjardin@free.fr>
Cc: <stable@vger.kernel.org> # v6.13+
Acked-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Carlos Song <carlos.song@nxp.com>
Reviewed-by: Stefan Eichenberger <eichest@gmail.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260713-for-upstream-i2c-lx2160-fix-v1-v3-2-073ac9e103a5@free.fr
When kmalloc caches are aliased, multiple cache pointers reference
the same kmem_cache. As a result, iterating over kmalloc indices and
bootstrapping sheaves can bootstrap the same cache more than once and
leak memory.
Currently, this could happen when the architecture specifies
minimum alignment for slab caches that is larger than
ARCH_KMALLOC_MINALIGN.
Bootstrap sheaves only when the cache does not have them already.
Add a warning when bootstrap_cache_sheaves() is called for a cache
that already has sheaves enabled.
Fixes: 913ffd3a1b ("slab: handle kmalloc sheaves bootstrap")
Cc: stable@vger.kernel.org
Signed-off-by: Harry Yoo (Oracle) <harry@kernel.org>
Reviewed-by: Suren Baghdasaryan <surenb@google.com>
Link: https://patch.msgid.link/20260713-kmalloc-no-objext-v3-1-47c7bd138de7@kernel.org
Signed-off-by: Vlastimil Babka (SUSE) <vbabka@kernel.org>
SMBus 3.1 6.5.7 allows a Block Read byte count of 0, but the atomic
(polling) path rejects it as -EPROTO. Worse, it returns without a
NACK+STOP: the next receive cycle has already started, so the target
keeps holding SDA and the bus stays stuck until a power cycle for
this i2c controller.
Reading I2DR to obtain the count likewise arms the next byte on the
count > I2C_SMBUS_BLOCK_MAX path, which also returned -EPROTO directly
and left the bus held.
Handle both: NACK the in-flight dummy byte (TXAK) and extend msgs->len so
the existing last-byte handling emits STOP; the dummy byte is discarded.
A count of 0 is a valid empty block read; a count above
I2C_SMBUS_BLOCK_MAX is still reported as -EPROTO, but only after the bus
has been released.
The interrupt-driven path has the same flaw from a later commit and is
fixed separately, as it carries a different Fixes: tag and stable range.
Fixes: 8e8782c715 ("i2c: imx: add SMBus block read support")
Signed-off-by: Vincent Jardin <vjardin@free.fr>
Cc: <stable@vger.kernel.org> # v3.16+
Acked-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Carlos Song <carlos.song@nxp.com>
Reviewed-by: Stefan Eichenberger <eichest@gmail.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260713-for-upstream-i2c-lx2160-fix-v1-v3-1-073ac9e103a5@free.fr
Wolfram Sang has decided that a decade-plus of I2C was enough and
is moving on to new things.
Thank you, Wolfram, for your years of dedication and for keeping
the bus in line. Your legacy is now officially cemented in the
CREDITS file.
Suggested-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Cc: Wolfram Sang <wsa@kernel.org>
Reviewed-by: Wolfram Sang <wsa@kernel.org>
Link: https://lore.kernel.org/r/20260625163221.183414-1-andi.shyti@kernel.org
