Single one-line fix in the ufs driver.
Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fix from James Bottomley:
"Single one-line fix in the ufs driver"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: ufs: core: Update compl_time_stamp_local_clock after completing a cqe
- Fix a bug in the BPF verifier to track changes to packet data
property for global functions (Eduard Zingerman)
- Fix a theoretical BPF prog_array use-after-free in RCU handling
of __uprobe_perf_func (Jann Horn)
- Fix BPF tracing to have an explicit list of tracepoints and
their arguments which need to be annotated as PTR_MAYBE_NULL
(Kumar Kartikeya Dwivedi)
- Fix a logic bug in the bpf_remove_insns code where a potential
error would have been wrongly propagated (Anton Protopopov)
- Avoid deadlock scenarios caused by nested kprobe and fentry
BPF programs (Priya Bala Govindasamy)
- Fix a bug in BPF verifier which was missing a size check for
BTF-based context access (Kumar Kartikeya Dwivedi)
- Fix a crash found by syzbot through an invalid BPF prog_array
access in perf_event_detach_bpf_prog (Jiri Olsa)
- Fix several BPF sockmap bugs including a race causing a
refcount imbalance upon element replace (Michal Luczaj)
- Fix a use-after-free from mismatching BPF program/attachment
RCU flavors (Jann Horn)
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Pull bpf fixes from Daniel Borkmann:
- Fix a bug in the BPF verifier to track changes to packet data
property for global functions (Eduard Zingerman)
- Fix a theoretical BPF prog_array use-after-free in RCU handling of
__uprobe_perf_func (Jann Horn)
- Fix BPF tracing to have an explicit list of tracepoints and their
arguments which need to be annotated as PTR_MAYBE_NULL (Kumar
Kartikeya Dwivedi)
- Fix a logic bug in the bpf_remove_insns code where a potential error
would have been wrongly propagated (Anton Protopopov)
- Avoid deadlock scenarios caused by nested kprobe and fentry BPF
programs (Priya Bala Govindasamy)
- Fix a bug in BPF verifier which was missing a size check for
BTF-based context access (Kumar Kartikeya Dwivedi)
- Fix a crash found by syzbot through an invalid BPF prog_array access
in perf_event_detach_bpf_prog (Jiri Olsa)
- Fix several BPF sockmap bugs including a race causing a refcount
imbalance upon element replace (Michal Luczaj)
- Fix a use-after-free from mismatching BPF program/attachment RCU
flavors (Jann Horn)
* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: (23 commits)
bpf: Avoid deadlock caused by nested kprobe and fentry bpf programs
selftests/bpf: Add tests for raw_tp NULL args
bpf: Augment raw_tp arguments with PTR_MAYBE_NULL
bpf: Revert "bpf: Mark raw_tp arguments with PTR_MAYBE_NULL"
selftests/bpf: Add test for narrow ctx load for pointer args
bpf: Check size for BTF-based ctx access of pointer members
selftests/bpf: extend changes_pkt_data with cases w/o subprograms
bpf: fix null dereference when computing changes_pkt_data of prog w/o subprogs
bpf: Fix theoretical prog_array UAF in __uprobe_perf_func()
bpf: fix potential error return
selftests/bpf: validate that tail call invalidates packet pointers
bpf: consider that tail calls invalidate packet pointers
selftests/bpf: freplace tests for tracking of changes_packet_data
bpf: check changes_pkt_data property for extension programs
selftests/bpf: test for changing packet data from global functions
bpf: track changes_pkt_data property for global functions
bpf: refactor bpf_helper_changes_pkt_data to use helper number
bpf: add find_containing_subprog() utility function
bpf,perf: Fix invalid prog_array access in perf_event_detach_bpf_prog
bpf: Fix UAF via mismatching bpf_prog/attachment RCU flavors
...
Here are some small USB driver fixes for some reported issues. Included
in here are:
- typec driver bugfixes
- u_serial gadget driver bugfix for much reported and discussed issue
- dwc2 bugfixes
- midi gadget driver bugfix
- ehci-hcd driver bugfix
- other small bugfixes
All of these have been in linux-next for over a week with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB driver fixes from Greg KH:
"Here are some small USB driver fixes for some reported issues.
Included in here are:
- typec driver bugfixes
- u_serial gadget driver bugfix for much reported and discussed issue
- dwc2 bugfixes
- midi gadget driver bugfix
- ehci-hcd driver bugfix
- other small bugfixes
All of these have been in linux-next for over a week with no reported
issues"
* tag 'usb-6.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: typec: ucsi: Fix connector status writing past buffer size
usb: typec: ucsi: Fix completion notifications
usb: dwc2: Fix HCD port connection race
usb: dwc2: hcd: Fix GetPortStatus & SetPortFeature
usb: dwc2: Fix HCD resume
usb: gadget: u_serial: Fix the issue that gs_start_io crashed due to accessing null pointer
usb: misc: onboard_usb_dev: skip suspend/resume sequence for USB5744 SMBus support
usb: dwc3: xilinx: make sure pipe clock is deselected in usb2 only mode
usb: core: hcd: only check primary hcd skip_phy_initialization
usb: gadget: midi2: Fix interpretation of is_midi1 bits
usb: dwc3: imx8mp: fix software node kernel dump
usb: typec: anx7411: fix OF node reference leaks in anx7411_typec_switch_probe()
usb: typec: anx7411: fix fwnode_handle reference leak
usb: host: max3421-hcd: Correctly abort a USB request.
dt-bindings: phy: imx8mq-usb: correct reference to usb-switch.yaml
usb: ehci-hcd: fix call balance of clocks handling routines
Here are two small serial driver fixes for 6.13-rc3. They are:
- ioport build fallout fix for the 8250 port driver that should
resolve Guenter's runtime problems
- sh-sci driver bugfix for a reported problem
Both of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull serial driver fixes from Greg KH:
"Here are two small serial driver fixes for 6.13-rc3. They are:
- ioport build fallout fix for the 8250 port driver that should
resolve Guenter's runtime problems
- sh-sci driver bugfix for a reported problem
Both of these have been in linux-next for a while with no reported
issues"
* tag 'tty-6.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
tty: serial: Work around warning backtrace in serial8250_set_defaults
serial: sh-sci: Check if TX data was written to device in .tx_empty()
Here are some small staging gpib driver build and bugfixes for issues
that have been much-reported (should finally fix Guenter's build
issues). There are more of these coming in later -rc releases, but for
now this should fix the majority of the reported problems.
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-6.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver fixes from Greg KH:
"Here are some small staging gpib driver build and bugfixes for issues
that have been much-reported (should finally fix Guenter's build
issues). There are more of these coming in later -rc releases, but for
now this should fix the majority of the reported problems.
All of these have been in linux-next for a while with no reported
issues"
* tag 'staging-6.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: gpib: Fix i386 build issue
staging: gpib: Fix faulty workaround for assignment in if
staging: gpib: Workaround for ppc build failure
staging: gpib: Make GPIB_NI_PCI_ISA depend on HAS_IOPORT
overrun in hisilicon/debugfs.
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Merge tag 'v6.13-p2' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
"Fix a regression in rsassa-pkcs1 as well as a buffer overrun in
hisilicon/debugfs"
* tag 'v6.13-p2' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: hisilicon/debugfs - fix the struct pointer incorrectly offset problem
crypto: rsassa-pkcs1 - Copy source data for SG list
Toolchain and infrastructure:
- Set bindgen's Rust target version to prevent issues when pairing
older rustc releases with newer bindgen releases, such as
bindgen >= 0.71.0 and rustc < 1.82 due to unsafe_extern_blocks.
drm/panic:
- Remove spurious empty line detected by a new Clippy warning.
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Merge tag 'rust-fixes-6.13' of https://github.com/Rust-for-Linux/linux
Pull rust fixes from Miguel Ojeda:
"Toolchain and infrastructure:
- Set bindgen's Rust target version to prevent issues when
pairing older rustc releases with newer bindgen releases,
such as bindgen >= 0.71.0 and rustc < 1.82 due to
unsafe_extern_blocks.
drm/panic:
- Remove spurious empty line detected by a new Clippy warning"
* tag 'rust-fixes-6.13' of https://github.com/Rust-for-Linux/linux:
rust: kbuild: set `bindgen`'s Rust target version
drm/panic: remove spurious empty line to clean warning
Including:
- Per-domain device-list locking fixes for the AMD IOMMU
driver.
- Fix incorrect use of smp_processor_id() in the NVidia-specific part
of the ARM-SMMU-v3 driver.
- Intel IOMMU driver fixes:
- Remove cache tags before disabling ATS.
- Avoid draining PRQ in sva mm release path.
- Fix qi_batch NULL pointer with nested parent domain.
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Merge tag 'iommu-fixes-v6.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux
Pull iommu fixes from Joerg Roedel:
- Per-domain device-list locking fixes for the AMD IOMMU driver
- Fix incorrect use of smp_processor_id() in the NVidia-specific part
of the ARM-SMMU-v3 driver
- Intel IOMMU driver fixes:
- Remove cache tags before disabling ATS
- Avoid draining PRQ in sva mm release path
- Fix qi_batch NULL pointer with nested parent domain
* tag 'iommu-fixes-v6.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux:
iommu/vt-d: Avoid draining PRQ in sva mm release path
iommu/vt-d: Fix qi_batch NULL pointer with nested parent domain
iommu/vt-d: Remove cache tags before disabling ATS
iommu/amd: Add lockdep asserts for domain->dev_list
iommu/amd: Put list_add/del(dev_data) back under the domain->lock
iommu/tegra241-cmdqv: do not use smp_processor_id in preemptible context
- Fix an OF node reference leak in the sata_highbank driver.
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Merge tag 'ata-6.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux
Pull ata fix from Damien Le Moal:
- Fix an OF node reference leak in the sata_highbank driver
* tag 'ata-6.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux:
ata: sata_highbank: fix OF node reference leak in highbank_initialize_phys()
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Merge tag '6.13-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull smb client fixes from Steve French:
- fix rmmod leak
- two minor cleanups
- fix for unlink/rename with pending i/o
* tag '6.13-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
smb: client: destroy cfid_put_wq on module exit
cifs: Use str_yes_no() helper in cifs_ses_add_channel()
cifs: Fix rmdir failure due to ongoing I/O on deleted file
smb3: fix compiler warning in reparse code
A few fairly small fixes for v6.13, the most substatial one being
disabling STIG mode for Cadence QSPI controllers on Altera SoCFPGA
platforms since it doesn't work.
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Merge tag 'spi-fix-v6.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A few fairly small fixes for v6.13, the most substatial one being
disabling STIG mode for Cadence QSPI controllers on Altera SoCFPGA
platforms since it doesn't work"
* tag 'spi-fix-v6.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: spi-cadence-qspi: Disable STIG mode for Altera SoCFPGA.
spi: rockchip: Fix PM runtime count on no-op cs
spi: aspeed: Fix an error handling path in aspeed_spi_[read|write]_user()
A couple of additional changes, one ensuring we give AXP717 enough time
to stabalise after changing voltages which fixes serious stability
issues on some platforms and another documenting the DT support required
for the Qualcomm WCN6750.
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Merge tag 'regulator-fix-v6.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fixes from Mark Brown:
"A couple of additional changes, one ensuring we give AXP717 enough
time to stabilise after changing voltages which fixes serious
stability issues on some platforms and another documenting the DT
support required for the Qualcomm WCN6750"
* tag 'regulator-fix-v6.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: axp20x: AXP717: set ramp_delay
regulator: dt-bindings: qcom,qca6390-pmu: document wcn6750-pmu
i915:
- Don't use indexed register writes needlessly [dsb]
- Stop using non-posted DSB writes for legacy LUT [color]
- Fix NULL pointer dereference in capture_engine
- Fix memory leak by correcting cache object name in error handler
xe:
- Fix a KUNIT test error message (Mirsad Todorovac)
- Fix an invalidation fence PM ref leak (Daniele)
- Fix a register pool UAF (Lucas)
amdgpu:
- ISP hw init fix
- SR-IOV fixes
- Fix contiguous VRAM mapping for UVD on older GPUs
- Fix some regressions due to drm scheduler changes
- Workload profile fixes
- Cleaner shader fix
amdkfd:
- Fix DMA map direction for migration
- Fix a potential null pointer dereference
- Cacheline size fixes
- Runtime PM fix
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Merge tag 'drm-fixes-2024-12-14' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
"This is the weekly fixes pull for drm. Just has i915, xe and amdgpu
changes in it. Nothing too major in here:
i915:
- Don't use indexed register writes needlessly [dsb]
- Stop using non-posted DSB writes for legacy LUT [color]
- Fix NULL pointer dereference in capture_engine
- Fix memory leak by correcting cache object name in error handler
xe:
- Fix a KUNIT test error message (Mirsad Todorovac)
- Fix an invalidation fence PM ref leak (Daniele)
- Fix a register pool UAF (Lucas)
amdgpu:
- ISP hw init fix
- SR-IOV fixes
- Fix contiguous VRAM mapping for UVD on older GPUs
- Fix some regressions due to drm scheduler changes
- Workload profile fixes
- Cleaner shader fix
amdkfd:
- Fix DMA map direction for migration
- Fix a potential null pointer dereference
- Cacheline size fixes
- Runtime PM fix"
* tag 'drm-fixes-2024-12-14' of https://gitlab.freedesktop.org/drm/kernel:
drm/xe/reg_sr: Remove register pool
drm/xe: Call invalidation_fence_fini for PT inval fences in error state
drm/xe: fix the ERR_PTR() returned on failure to allocate tiny pt
drm/amdkfd: pause autosuspend when creating pdd
drm/amdgpu: fix when the cleaner shader is emitted
drm/amdgpu: Fix ISP HW init issue
drm/amdkfd: hard-code MALL cacheline size for gfx11, gfx12
drm/amdkfd: hard-code cacheline size for gfx11
drm/amdkfd: Dereference null return value
drm/i915: Fix memory leak by correcting cache object name in error handler
drm/i915: Fix NULL pointer dereference in capture_engine
drm/i915/color: Stop using non-posted DSB writes for legacy LUT
drm/i915/dsb: Don't use indexed register writes needlessly
drm/amdkfd: Correct the migration DMA map direction
drm/amd/pm: Set SMU v13.0.7 default workload type
drm/amd/pm: Initialize power profile mode
amdgpu/uvd: get ring reference from rq scheduler
drm/amdgpu: fix UVD contiguous CS mapping problem
drm/amdgpu: use sjt mec fw on gfx943 for sriov
Revert "drm/amdgpu: Fix ISP hw init issue"
Fix a runtime PM documentation mistake that may mislead someone into
making a coding mistake (Paul Barker).
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Merge tag 'pm-6.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management documentation fix from Rafael Wysocki:
"Fix a runtime PM documentation mistake that may mislead someone into
making a coding mistake (Paul Barker)"
* tag 'pm-6.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
Documentation: PM: Clarify pm_runtime_resume_and_get() return value
- Relocate the addr->info.mem.caching check in acpi_decode_space() to
only execute it if the resource is of the correct type (Ilpo Järvinen).
- Don't release a context_mutex that was never acquired in
acpi_remove_address_space_handler() (Daniil Tatianin).
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Merge tag 'acpi-6.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These fix two coding mistakes, one in the ACPI resources handling code
and one in ACPICA:
- Relocate the addr->info.mem.caching check in acpi_decode_space() to
only execute it if the resource is of the correct type (Ilpo
Järvinen)
- Don't release a context_mutex that was never acquired in
acpi_remove_address_space_handler() (Daniil Tatianin)"
* tag 'acpi-6.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPICA: events/evxfregn: don't release the ContextMutex that was never acquired
ACPI: resource: Fix memory resource type union access
Kumar Kartikeya Dwivedi says:
====================
Explicit raw_tp NULL arguments
This set reverts the raw_tp masking changes introduced in commit
cb4158ce8e ("bpf: Mark raw_tp arguments with PTR_MAYBE_NULL") and
replaces it wwith an explicit list of tracepoints and their arguments
which need to be annotated as PTR_MAYBE_NULL. More context on the
fallout caused by the masking fix and subsequent discussions can be
found in [0].
To remedy this, we implement a solution of explicitly defined tracepoint
and define which args need to be marked NULL or scalar (for IS_ERR
case). The commit logs describes the details of this approach in detail.
We will follow up this solution an approach Eduard is working on to
perform automated analysis of NULL-ness of tracepoint arguments. The
current PoC is available here:
- LLVM branch with the analysis:
https://github.com/eddyz87/llvm-project/tree/nullness-for-tracepoint-params
- Python script for merging of analysis results:
https://gist.github.com/eddyz87/e47c164466a60e8d49e6911cff146f47
The idea is to infer a tri-state verdict for each tracepoint parameter:
definitely not null, can be null, unknown (in which case no assumptions
should be made).
Using this information, the verifier in most cases will be able to
precisely determine the state of the tracepoint parameter without any
human effort. At that point, the table maintained manually in this set
can be dropped and replace with this automated analysis tool's result.
This will be kept up to date with each kernel release.
[0]: https://lore.kernel.org/bpf/20241206161053.809580-1-memxor@gmail.com
Changelog:
----------
v2 -> v3:
v2: https://lore.kernel.org/bpf/20241213175127.2084759-1-memxor@gmail.com
* Address Eduard's nits, add Reviewed-by
v1 -> v2:
v1: https://lore.kernel.org/bpf/20241211020156.18966-1-memxor@gmail.com
* Address comments from Jiri
* Mark module tracepoints args NULL by default
* Add more sunrpc tracepoints
* Unify scalar or null handling
* Address comments from Alexei
* Use bitmask approach suggested in review
* Unify scalar or null handling
* Drop most tests that rely on CONFIG options
* Drop scripts to generate tests
====================
Link: https://patch.msgid.link/20241213221929.3495062-1-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Add tests to ensure that arguments are correctly marked based on their
specified positions, and whether they get marked correctly as maybe
null. For modules, all tracepoint parameters should be marked
PTR_MAYBE_NULL by default.
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20241213221929.3495062-4-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Arguments to a raw tracepoint are tagged as trusted, which carries the
semantics that the pointer will be non-NULL. However, in certain cases,
a raw tracepoint argument may end up being NULL. More context about this
issue is available in [0].
Thus, there is a discrepancy between the reality, that raw_tp arguments can
actually be NULL, and the verifier's knowledge, that they are never NULL,
causing explicit NULL check branch to be dead code eliminated.
A previous attempt [1], i.e. the second fixed commit, was made to
simulate symbolic execution as if in most accesses, the argument is a
non-NULL raw_tp, except for conditional jumps. This tried to suppress
branch prediction while preserving compatibility, but surfaced issues
with production programs that were difficult to solve without increasing
verifier complexity. A more complete discussion of issues and fixes is
available at [2].
Fix this by maintaining an explicit list of tracepoints where the
arguments are known to be NULL, and mark the positional arguments as
PTR_MAYBE_NULL. Additionally, capture the tracepoints where arguments
are known to be ERR_PTR, and mark these arguments as scalar values to
prevent potential dereference.
Each hex digit is used to encode NULL-ness (0x1) or ERR_PTR-ness (0x2),
shifted by the zero-indexed argument number x 4. This can be represented
as follows:
1st arg: 0x1
2nd arg: 0x10
3rd arg: 0x100
... and so on (likewise for ERR_PTR case).
In the future, an automated pass will be used to produce such a list, or
insert __nullable annotations automatically for tracepoints. Each
compilation unit will be analyzed and results will be collated to find
whether a tracepoint pointer is definitely not null, maybe null, or an
unknown state where verifier conservatively marks it PTR_MAYBE_NULL.
A proof of concept of this tool from Eduard is available at [3].
Note that in case we don't find a specification in the raw_tp_null_args
array and the tracepoint belongs to a kernel module, we will
conservatively mark the arguments as PTR_MAYBE_NULL. This is because
unlike for in-tree modules, out-of-tree module tracepoints may pass NULL
freely to the tracepoint. We don't protect against such tracepoints
passing ERR_PTR (which is uncommon anyway), lest we mark all such
arguments as SCALAR_VALUE.
While we are it, let's adjust the test raw_tp_null to not perform
dereference of the skb->mark, as that won't be allowed anymore, and make
it more robust by using inline assembly to test the dead code
elimination behavior, which should still stay the same.
[0]: https://lore.kernel.org/bpf/ZrCZS6nisraEqehw@jlelli-thinkpadt14gen4.remote.csb
[1]: https://lore.kernel.org/all/20241104171959.2938862-1-memxor@gmail.com
[2]: https://lore.kernel.org/bpf/20241206161053.809580-1-memxor@gmail.com
[3]: https://github.com/eddyz87/llvm-project/tree/nullness-for-tracepoint-params
Reported-by: Juri Lelli <juri.lelli@redhat.com> # original bug
Reported-by: Manu Bretelle <chantra@meta.com> # bugs in masking fix
Fixes: 3f00c52393 ("bpf: Allow trusted pointers to be passed to KF_TRUSTED_ARGS kfuncs")
Fixes: cb4158ce8e ("bpf: Mark raw_tp arguments with PTR_MAYBE_NULL")
Reviewed-by: Eduard Zingerman <eddyz87@gmail.com>
Co-developed-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20241213221929.3495062-3-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This patch reverts commit
cb4158ce8e ("bpf: Mark raw_tp arguments with PTR_MAYBE_NULL"). The
patch was well-intended and meant to be as a stop-gap fixing branch
prediction when the pointer may actually be NULL at runtime. Eventually,
it was supposed to be replaced by an automated script or compiler pass
detecting possibly NULL arguments and marking them accordingly.
However, it caused two main issues observed for production programs and
failed to preserve backwards compatibility. First, programs relied on
the verifier not exploring == NULL branch when pointer is not NULL, thus
they started failing with a 'dereference of scalar' error. Next,
allowing raw_tp arguments to be modified surfaced the warning in the
verifier that warns against reg->off when PTR_MAYBE_NULL is set.
More information, context, and discusson on both problems is available
in [0]. Overall, this approach had several shortcomings, and the fixes
would further complicate the verifier's logic, and the entire masking
scheme would have to be removed eventually anyway.
Hence, revert the patch in preparation of a better fix avoiding these
issues to replace this commit.
[0]: https://lore.kernel.org/bpf/20241206161053.809580-1-memxor@gmail.com
Reported-by: Manu Bretelle <chantra@meta.com>
Fixes: cb4158ce8e ("bpf: Mark raw_tp arguments with PTR_MAYBE_NULL")
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20241213221929.3495062-2-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Merge tag 'block-6.13-20241213' of git://git.kernel.dk/linux
Pull block fixes from Jens Axboe:
- Series from Damien fixing issues with the zoned write plugging
- Fix for a potential UAF in block cgroups
- Fix deadlock around queue freezing and the sysfs lock
- Various little cleanups and fixes
* tag 'block-6.13-20241213' of git://git.kernel.dk/linux:
block: Fix potential deadlock while freezing queue and acquiring sysfs_lock
block: Fix queue_iostats_passthrough_show()
blk-mq: Clean up blk_mq_requeue_work()
mq-deadline: Remove a local variable
blk-iocost: Avoid using clamp() on inuse in __propagate_weights()
block: Make bio_iov_bvec_set() accept pointer to const iov_iter
block: get wp_offset by bdev_offset_from_zone_start
blk-cgroup: Fix UAF in blkcg_unpin_online()
MAINTAINERS: update Coly Li's email address
block: Prevent potential deadlocks in zone write plug error recovery
dm: Fix dm-zoned-reclaim zone write pointer alignment
block: Ignore REQ_NOWAIT for zone reset and zone finish operations
block: Use a zone write plug BIO work for REQ_NOWAIT BIOs
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Merge tag 'io_uring-6.13-20241213' of git://git.kernel.dk/linux
Pull io_uring fix from Jens Axboe:
"A single fix for a regression introduced in the 6.13 merge window"
* tag 'io_uring-6.13-20241213' of git://git.kernel.dk/linux:
io_uring/rsrc: don't put/free empty buffers
- sysbot fix for out of bounds access
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Merge tag 'libnvdimm-fixes-6.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm fix from Ira Weiny:
- sysbot fix for out of bounds access
* tag 'libnvdimm-fixes-6.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
acpi: nfit: vmalloc-out-of-bounds Read in acpi_nfit_ctl
* Fixes for scrub subsystem
* Fix quota crashes
* Fix sb_spino_align checons on large fsblock sizes
* Fix discarded superblock updates
* fix stuck unmount due to a locked inode
Signed-off-by: Carlos Maiolino <cem@kernel.org>
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Merge tag 'xfs-fixes-6.13-rc3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fixes from Carlos Maiolino:
- Fixes for scrub subsystem
- Fix quota crashes
- Fix sb_spino_align checons on large fsblock sizes
- Fix discarded superblock updates
- Fix stuck unmount due to a locked inode
* tag 'xfs-fixes-6.13-rc3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (28 commits)
xfs: port xfs_ioc_start_commit to multigrain timestamps
xfs: return from xfs_symlink_verify early on V4 filesystems
xfs: fix zero byte checking in the superblock scrubber
xfs: check pre-metadir fields correctly
xfs: don't crash on corrupt /quotas dirent
xfs: don't move nondir/nonreg temporary repair files to the metadir namespace
xfs: fix sb_spino_align checks for large fsblock sizes
xfs: convert quotacheck to attach dquot buffers
xfs: attach dquot buffer to dquot log item buffer
xfs: clean up log item accesses in xfs_qm_dqflush{,_done}
xfs: separate dquot buffer reads from xfs_dqflush
xfs: don't lose solo dquot update transactions
xfs: don't lose solo superblock counter update transactions
xfs: avoid nested calls to __xfs_trans_commit
xfs: only run precommits once per transaction object
xfs: unlock inodes when erroring out of xfs_trans_alloc_dir
xfs: fix scrub tracepoints when inode-rooted btrees are involved
xfs: update btree keys correctly when _insrec splits an inode root block
xfs: fix error bailout in xfs_rtginode_create
xfs: fix null bno_hint handling in xfs_rtallocate_rtg
...
- arm64 stacktrace: address some fallout from the recent changes to
unwinding across exception boundaries
- Ensure the arm64 signal delivery failure is recoverable - only
override the return registers after all the user accesses took place
- Fix the arm64 kselftest access to SVCR - only when SME is detected
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- arm64 stacktrace: address some fallout from the recent changes to
unwinding across exception boundaries
- Ensure the arm64 signal delivery failure is recoverable - only
override the return registers after all the user accesses took place
- Fix the arm64 kselftest access to SVCR - only when SME is detected
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
kselftest/arm64: abi: fix SVCR detection
arm64: signal: Ensure signal delivery failure is recoverable
arm64: stacktrace: Don't WARN when unwinding other tasks
arm64: stacktrace: Skip reporting LR at exception boundaries
* A fix to avoid taking a mutex while resolving jump_labels in the mutex
implementation.
* A fix to avoid trying to resolve the early boot DT pointer via the
linear map.
* A fix to avoid trying to IPI kfence TLB flushes, as kfence might flush
with IRQs disabled.
* A fix to avoid calling PMD destructors on PMDs that were never
constructed.
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Merge tag 'riscv-for-linus-6.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- avoid taking a mutex while resolving jump_labels in the mutex
implementation
- avoid trying to resolve the early boot DT pointer via the linear map
- avoid trying to IPI kfence TLB flushes, as kfence might flush with
IRQs disabled
- avoid calling PMD destructors on PMDs that were never constructed
* tag 'riscv-for-linus-6.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: mm: Do not call pmd dtor on vmemmap page table teardown
riscv: Fix IPIs usage in kfence_protect_page()
riscv: Fix wrong usage of __pa() on a fixmap address
riscv: Fixup boot failure when CONFIG_DEBUG_RT_MUTEXES=y
Merge an ACPICA fix for 6.13-rc3:
- Don't release a context_mutex that was never acquired in
acpi_remove_address_space_handler() (Daniil Tatianin).
* acpica:
ACPICA: events/evxfregn: don't release the ContextMutex that was never acquired
- fix several low-level issues in gpio-graniterapids
- fix an initialization order issue that manifests itself with
__counted_by() checks in gpio-ljca
- don't default to y for CONFIG_GPIO_MVEBU with COMPILE_TEST enabled
- move the DEFAULT_SYMBOL_NAMESPACE define before the export.h include
in gpio-idio-16
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Merge tag 'gpio-fixes-for-v6.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
- fix several low-level issues in gpio-graniterapids
- fix an initialization order issue that manifests itself with
__counted_by() checks in gpio-ljca
- don't default to y for CONFIG_GPIO_MVEBU with COMPILE_TEST enabled
- move the DEFAULT_SYMBOL_NAMESPACE define before the export.h include
in gpio-idio-16
* tag 'gpio-fixes-for-v6.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpio: idio-16: Actually make use of the GPIO_IDIO_16 symbol namespace
gpio: graniterapids: Fix GPIO Ack functionality
gpio: graniterapids: Check if GPIO line can be used for IRQs
gpio: graniterapids: Determine if GPIO pad can be used by driver
gpio: graniterapids: Fix invalid RXEVCFG register bitmask
gpio: graniterapids: Fix invalid GPI_IS register offset
gpio: graniterapids: Fix incorrect BAR assignment
gpio: graniterapids: Fix vGPIO driver crash
gpio: ljca: Initialize num before accessing item in ljca_gpio_config
gpio: GPIO_MVEBU should not default to y when compile-testing
A collection of fixes; all look small, device-specific and boring.
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Merge tag 'sound-6.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"A collection of fixes; all look small, device-specific and boring"
* tag 'sound-6.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ASoC: Intel: sof_sdw: Add space for a terminator into DAIs array
ASoC: fsl_spdif: change IFACE_PCM to IFACE_MIXER
ASoC: fsl_xcvr: change IFACE_PCM to IFACE_MIXER
ASoC: tas2781: Fix calibration issue in stress test
ASoC: audio-graph-card: Call of_node_put() on correct node
ASoC: amd: yc: Fix the wrong return value
ALSA: control: Avoid WARN() for symlink errors
sound: usb: format: don't warn that raw DSD is unsupported
sound: usb: enable DSD output for ddHiFi TC44C
ALSA: hda/realtek: Add new alc2xx-fixup-headset-mic model
ALSA: hda/ca0132: Use standard HD-audio quirk matching helpers
ALSA: usb-audio: Add implicit feedback quirk for Yamaha THR5
ALSA: hda/realtek - Add support for ASUS Zen AIO 27 Z272SD_A272SD audio
ALSA: hda/realtek: Fix headset mic on Acer Nitro 5
ALSA: hda: cs35l56: Remove calls to cs35l56_force_sync_asp1_registers_from_cache()
mass change.
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Merge tag 'docs-6.13-fix' of git://git.lwn.net/linux
Pull documentation fix from Jonathan Corbet:
"A single fix for a docs-build regression caused by the
EXPORT_SYMBOL_NS() mass change"
* tag 'docs-6.13-fix' of git://git.lwn.net/linux:
scripts/kernel-doc: Get -export option working again
Make queue_iostats_passthrough_show() report 0/1 in sysfs instead of 0/4.
This patch fixes the following sparse warning:
block/blk-sysfs.c:266:31: warning: incorrect type in argument 1 (different base types)
block/blk-sysfs.c:266:31: expected unsigned long var
block/blk-sysfs.c:266:31: got restricted blk_flags_t
Cc: Keith Busch <kbusch@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>
Fixes: 110234da18 ("block: enable passthrough command statistics")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20241212212941.1268662-4-bvanassche@acm.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Move a statement that occurs in both branches of an if-statement in front
of the if-statement. Fix a typo in a source code comment. No functionality
has been changed.
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Nitesh Shetty <nj.shetty@samsung.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20241212212941.1268662-3-bvanassche@acm.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Since commit fde02699c2 ("block: mq-deadline: Remove support for zone
write locking"), the local variable 'insert_before' is assigned once and
is used once. Hence remove this local variable.
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Nitesh Shetty <nj.shetty@samsung.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20241212212941.1268662-2-bvanassche@acm.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
When using svcr_in to check ZA and Streaming Mode, we should make sure
that the value in x2 is correct, otherwise it may trigger an Illegal
instruction if FEAT_SVE and !FEAT_SME.
Fixes: 43e3f85523 ("kselftest/arm64: Add SME support to syscall ABI test")
Signed-off-by: Weizhao Ouyang <o451686892@gmail.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20241211111639.12344-1-o451686892@gmail.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
When a PASID is used for SVA by a device, it's possible that the PASID
entry is cleared before the device flushes all ongoing DMA requests and
removes the SVA domain. This can occur when an exception happens and the
process terminates before the device driver stops DMA and calls the
iommu driver to unbind the PASID.
There's no need to drain the PRQ in the mm release path. Instead, the PRQ
will be drained in the SVA unbind path.
Unfortunately, commit c43e1ccdeb ("iommu/vt-d: Drain PRQs when domain
removed from RID") changed this behavior by unconditionally draining the
PRQ in intel_pasid_tear_down_entry(). This can lead to a potential
sleeping-in-atomic-context issue.
Smatch static checker warning:
drivers/iommu/intel/prq.c:95 intel_iommu_drain_pasid_prq()
warn: sleeping in atomic context
To avoid this issue, prevent draining the PRQ in the SVA mm release path
and restore the previous behavior.
Fixes: c43e1ccdeb ("iommu/vt-d: Drain PRQs when domain removed from RID")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/linux-iommu/c5187676-2fa2-4e29-94e0-4a279dc88b49@stanley.mountain/
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20241212021529.1104745-1-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
The qi_batch is allocated when assigning cache tag for a domain. While
for nested parent domain, it is missed. Hence, when trying to map pages
to the nested parent, NULL dereference occurred. Also, there is potential
memleak since there is no lock around domain->qi_batch allocation.
To solve it, add a helper for qi_batch allocation, and call it in both
the __cache_tag_assign_domain() and __cache_tag_assign_parent_domain().
BUG: kernel NULL pointer dereference, address: 0000000000000200
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 8104795067 P4D 0
Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI
CPU: 223 UID: 0 PID: 4357 Comm: qemu-system-x86 Not tainted 6.13.0-rc1-00028-g4b50c3c3b998-dirty #2632
Call Trace:
? __die+0x24/0x70
? page_fault_oops+0x80/0x150
? do_user_addr_fault+0x63/0x7b0
? exc_page_fault+0x7c/0x220
? asm_exc_page_fault+0x26/0x30
? cache_tag_flush_range_np+0x13c/0x260
intel_iommu_iotlb_sync_map+0x1a/0x30
iommu_map+0x61/0xf0
batch_to_domain+0x188/0x250
iopt_area_fill_domains+0x125/0x320
? rcu_is_watching+0x11/0x50
iopt_map_pages+0x63/0x100
iopt_map_common.isra.0+0xa7/0x190
iopt_map_user_pages+0x6a/0x80
iommufd_ioas_map+0xcd/0x1d0
iommufd_fops_ioctl+0x118/0x1c0
__x64_sys_ioctl+0x93/0xc0
do_syscall_64+0x71/0x140
entry_SYSCALL_64_after_hwframe+0x76/0x7e
Fixes: 705c1cdf1e ("iommu/vt-d: Introduce batched cache invalidation")
Cc: stable@vger.kernel.org
Co-developed-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20241210130322.17175-1-yi.l.liu@intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
The current implementation removes cache tags after disabling ATS,
leading to potential memory leaks and kernel crashes. Specifically,
CACHE_TAG_DEVTLB type cache tags may still remain in the list even
after the domain is freed, causing a use-after-free condition.
This issue really shows up when multiple VFs from different PFs
passed through to a single user-space process via vfio-pci. In such
cases, the kernel may crash with kernel messages like:
BUG: kernel NULL pointer dereference, address: 0000000000000014
PGD 19036a067 P4D 1940a3067 PUD 136c9b067 PMD 0
Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI
CPU: 74 UID: 0 PID: 3183 Comm: testCli Not tainted 6.11.9 #2
RIP: 0010:cache_tag_flush_range+0x9b/0x250
Call Trace:
<TASK>
? __die+0x1f/0x60
? page_fault_oops+0x163/0x590
? exc_page_fault+0x72/0x190
? asm_exc_page_fault+0x22/0x30
? cache_tag_flush_range+0x9b/0x250
? cache_tag_flush_range+0x5d/0x250
intel_iommu_tlb_sync+0x29/0x40
intel_iommu_unmap_pages+0xfe/0x160
__iommu_unmap+0xd8/0x1a0
vfio_unmap_unpin+0x182/0x340 [vfio_iommu_type1]
vfio_remove_dma+0x2a/0xb0 [vfio_iommu_type1]
vfio_iommu_type1_ioctl+0xafa/0x18e0 [vfio_iommu_type1]
Move cache_tag_unassign_domain() before iommu_disable_pci_caps() to fix
it.
Fixes: 3b1d9e2b2d ("iommu/vt-d: Add cache tag assignment interface")
Cc: stable@vger.kernel.org
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20241129020506.576413-1-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Commit eaf62ce156 ("arm64/signal: Set up and restore the GCS
context for signal handlers") introduced a potential failure point
at the end of setup_return(). This is unfortunate as it is too late
to deliver a SIGSEGV: if that SIGSEGV is handled, the subsequent
sigreturn will end up returning to the original handler, which is
not the intention (since we failed to deliver that signal).
Make sure this does not happen by calling gcs_signal_entry()
at the very beginning of setup_return(), and add a comment just
after to discourage error cases being introduced from that point
onwards.
While at it, also take care of copy_siginfo_to_user(): since it may
fail, we shouldn't be calling it after setup_return() either. Call
it before setup_return() instead, and move the setting of X1/X2
inside setup_return() where it belongs (after the "point of no
failure").
Background: the first part of setup_rt_frame(), including
setup_sigframe(), has no impact on the execution of the interrupted
thread. The signal frame is written to the stack, but the stack
pointer remains unchanged. Failure at this stage can be recovered by
a SIGSEGV handler, and sigreturn will restore the original context,
at the point where the original signal occurred. On the other hand,
once setup_return() has updated registers including SP, the thread's
control flow has been modified and we must deliver the original
signal.
Fixes: eaf62ce156 ("arm64/signal: Set up and restore the GCS context for signal handlers")
Signed-off-by: Kevin Brodsky <kevin.brodsky@arm.com>
Reviewed-by: Dave Martin <Dave.Martin@arm.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20241210160940.2031997-1-kevin.brodsky@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Bug fixes for 6.13.
This has been running on the djcloud for months with no problems. Enjoy!
Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
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Merge tag 'xfs-6.13-fixes_2024-12-12' of https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux into next-rc
xfs: bug fixes for 6.13 [01/12]
Bug fixes for 6.13.
This has been running on the djcloud for months with no problems. Enjoy!
Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
Take advantage of the multigrain timestamp APIs to ensure that nobody
can sneak in and write things to a file between starting a file update
operation and committing the results. This should have been part of the
multigrain timestamp merge, but I forgot to fling it at jlayton when he
resubmitted the patchset due to developer bandwidth problems.
Cc: <stable@vger.kernel.org> # v6.13-rc1
Fixes: 4e40eff0b5 ("fs: add infrastructure for multigrain timestamps")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
V4 symlink blocks didn't have headers, so return early if this is a V4
filesystem.
Cc: <stable@vger.kernel.org> # v5.1
Fixes: 39708c20ab ("xfs: miscellaneous verifier magic value fixups")
Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
The logic to check that the region past the end of the superblock is all
zeroes is wrong -- we don't want to check only the bytes past the end of
the maximally sized ondisk superblock structure as currently defined in
xfs_format.h; we want to check the bytes beyond the end of the ondisk as
defined by the feature bits.
Port the superblock size logic from xfs_repair and then put it to use in
xfs_scrub.
Cc: <stable@vger.kernel.org> # v4.15
Fixes: 21fb4cb198 ("xfs: scrub the secondary superblocks")
Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
The checks that were added to the superblock scrubber for metadata
directories aren't quite right -- the old inode pointers are now defined
to be zeroes until someone else reuses them. Also consolidate the new
metadir field checks to one place; they were inexplicably scattered
around.
Cc: <stable@vger.kernel.org> # v6.13-rc1
Fixes: 28d756d4d5 ("xfs: update sb field checks when metadir is turned on")
Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
If the /quotas dirent points to an inode but the inode isn't loadable
(and hence mkdir returns -EEXIST), don't crash, just bail out.
Cc: <stable@vger.kernel.org> # v6.13-rc1
Fixes: e80fbe1ad8 ("xfs: use metadir for quota inodes")
Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Only directories or regular files are allowed in the metadata directory
tree. Don't move the repair tempfile to the metadir namespace if this
is not true; this will cause the inode verifiers to trip.
xrep_tempfile_adjust_directory_tree opportunistically moves sc->tempip
from the regular directory tree to the metadata directory tree if sc->ip
is part of the metadata directory tree. However, the scrub setup
functions grab sc->ip and create sc->tempip before we actually get
around to checking if the file mode is the right type for the scrubber.
IOWs, you can invoke the symlink scrubber with the file handle of a
subdirectory in the metadir. xrep_setup_symlink will create a temporary
symlink file, xrep_tempfile_adjust_directory_tree will foolishly try to
set the METADATA flag on the temp symlink, which trips the inode
verifier in the inode item precommit, which shuts down the filesystem
when expensive checks are turned on. If they're /not/ turned on, then
xchk_symlink will return ENOENT when it sees that it's been passed a
symlink, but the invalid inode could still get flushed to disk. We
don't want that.
Cc: <stable@vger.kernel.org> # v6.13-rc1
Fixes: 9dc31acb01 ("xfs: move repair temporary files to the metadata directory tree")
Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
For a sparse inodes filesystem, mkfs.xfs computes the values of
sb_spino_align and sb_inoalignmt with the following code:
int cluster_size = XFS_INODE_BIG_CLUSTER_SIZE;
if (cfg->sb_feat.crcs_enabled)
cluster_size *= cfg->inodesize / XFS_DINODE_MIN_SIZE;
sbp->sb_spino_align = cluster_size >> cfg->blocklog;
sbp->sb_inoalignmt = XFS_INODES_PER_CHUNK *
cfg->inodesize >> cfg->blocklog;
On a V5 filesystem with 64k fsblocks and 512 byte inodes, this results
in cluster_size = 8192 * (512 / 256) = 16384. As a result,
sb_spino_align and sb_inoalignmt are both set to zero. Unfortunately,
this trips the new sb_spino_align check that was just added to
xfs_validate_sb_common, and the mkfs fails:
# mkfs.xfs -f -b size=64k, /dev/sda
meta-data=/dev/sda isize=512 agcount=4, agsize=81136 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=1, sparse=1, rmapbt=1
= reflink=1 bigtime=1 inobtcount=1 nrext64=1
= exchange=0 metadir=0
data = bsize=65536 blocks=324544, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=65536 ascii-ci=0, ftype=1, parent=0
log =internal log bsize=65536 blocks=5006, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=65536 blocks=0, rtextents=0
= rgcount=0 rgsize=0 extents
Discarding blocks...Sparse inode alignment (0) is invalid.
Metadata corruption detected at 0x560ac5a80bbe, xfs_sb block 0x0/0x200
libxfs_bwrite: write verifier failed on xfs_sb bno 0x0/0x1
mkfs.xfs: Releasing dirty buffer to free list!
found dirty buffer (bulk) on free list!
Sparse inode alignment (0) is invalid.
Metadata corruption detected at 0x560ac5a80bbe, xfs_sb block 0x0/0x200
libxfs_bwrite: write verifier failed on xfs_sb bno 0x0/0x1
mkfs.xfs: writing AG headers failed, err=22
Prior to commit 59e43f5479 this all worked fine, even if "sparse"
inodes are somewhat meaningless when everything fits in a single
fsblock. Adjust the checks to handle existing filesystems.
Cc: <stable@vger.kernel.org> # v6.13-rc1
Fixes: 59e43f5479 ("xfs: sb_spino_align is not verified")
Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Now that we've converted the dquot logging machinery to attach the dquot
buffer to the li_buf pointer so that the AIL dqflush doesn't have to
allocate or read buffers in a reclaim path, do the same for the
quotacheck code so that the reclaim shrinker dqflush call doesn't have
to do that either.
Cc: <stable@vger.kernel.org> # v6.12
Fixes: 903edea6c5 ("mm: warn about illegal __GFP_NOFAIL usage in a more appropriate location and manner")
Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Ever since 6.12-rc1, I've observed a pile of warnings from the kernel
when running fstests with quotas enabled:
WARNING: CPU: 1 PID: 458580 at mm/page_alloc.c:4221 __alloc_pages_noprof+0xc9c/0xf18
CPU: 1 UID: 0 PID: 458580 Comm: xfsaild/sda3 Tainted: G W 6.12.0-rc6-djwa #rc6 6ee3e0e531f6457e2d26aa008a3b65ff184b377c
<snip>
Call trace:
__alloc_pages_noprof+0xc9c/0xf18
alloc_pages_mpol_noprof+0x94/0x240
alloc_pages_noprof+0x68/0xf8
new_slab+0x3e0/0x568
___slab_alloc+0x5a0/0xb88
__slab_alloc.constprop.0+0x7c/0xf8
__kmalloc_noprof+0x404/0x4d0
xfs_buf_get_map+0x594/0xde0 [xfs 384cb02810558b4c490343c164e9407332118f88]
xfs_buf_read_map+0x64/0x2e0 [xfs 384cb02810558b4c490343c164e9407332118f88]
xfs_trans_read_buf_map+0x1dc/0x518 [xfs 384cb02810558b4c490343c164e9407332118f88]
xfs_qm_dqflush+0xac/0x468 [xfs 384cb02810558b4c490343c164e9407332118f88]
xfs_qm_dquot_logitem_push+0xe4/0x148 [xfs 384cb02810558b4c490343c164e9407332118f88]
xfsaild+0x3f4/0xde8 [xfs 384cb02810558b4c490343c164e9407332118f88]
kthread+0x110/0x128
ret_from_fork+0x10/0x20
---[ end trace 0000000000000000 ]---
This corresponds to the line:
WARN_ON_ONCE(current->flags & PF_MEMALLOC);
within the NOFAIL checks. What's happening here is that the XFS AIL is
trying to write a disk quota update back into the filesystem, but for
that it needs to read the ondisk buffer for the dquot. The buffer is
not in memory anymore, probably because it was evicted. Regardless, the
buffer cache tries to allocate a new buffer, but those allocations are
NOFAIL. The AIL thread has marked itself PF_MEMALLOC (aka noreclaim)
since commit 43ff2122e6 ("xfs: on-stack delayed write buffer lists")
presumably because reclaim can push on XFS to push on the AIL.
An easy way to fix this probably would have been to drop the NOFAIL flag
from the xfs_buf allocation and open code a retry loop, but then there's
still the problem that for bs>ps filesystems, the buffer itself could
require up to 64k worth of pages.
Inode items had similar behavior (multi-page cluster buffers that we
don't want to allocate in the AIL) which we solved by making transaction
precommit attach the inode cluster buffers to the dirty log item. Let's
solve the dquot problem in the same way.
So: Make a real precommit handler to read the dquot buffer and attach it
to the log item; pass it to dqflush in the push method; and have the
iodone function detach the buffer once we've flushed everything. Add a
state flag to the log item to track when a thread has entered the
precommit -> push mechanism to skip the detaching if it turns out that
the dquot is very busy, as we don't hold the dquot lock between log item
commit and AIL push).
Reading and attaching the dquot buffer in the precommit hook is inspired
by the work done for inode cluster buffers some time ago.
Cc: <stable@vger.kernel.org> # v6.12
Fixes: 903edea6c5 ("mm: warn about illegal __GFP_NOFAIL usage in a more appropriate location and manner")
Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
