Struct fields are zero by default, so these lines of code have no
effect. Remove them to reduce the number of matches that are found when
grepping for cra_alignmask.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Instead of specifying a nonzero alignmask, use the unaligned access
helpers. This eliminates unnecessary alignment operations on most CPUs,
which can handle unaligned accesses efficiently, and brings us a step
closer to eventually removing support for the alignmask field.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Instead of specifying a nonzero alignmask, use the unaligned access
helpers. This eliminates unnecessary alignment operations on most CPUs,
which can handle unaligned accesses efficiently, and brings us a step
closer to eventually removing support for the alignmask field.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Instead of specifying a nonzero alignmask, use the unaligned access
helpers. This eliminates unnecessary alignment operations on most CPUs,
which can handle unaligned accesses efficiently, and brings us a step
closer to eventually removing support for the alignmask field.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Instead of specifying a nonzero alignmask, use the unaligned access
helpers. This eliminates unnecessary alignment operations on most CPUs,
which can handle unaligned accesses efficiently, and brings us a step
closer to eventually removing support for the alignmask field.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Instead of specifying a nonzero alignmask, use the unaligned access
helpers. This eliminates unnecessary alignment operations on most CPUs,
which can handle unaligned accesses efficiently, and brings us a step
closer to eventually removing support for the alignmask field.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Since the physical address support in skcipher_walk is not used anymore,
remove all the code associated with it. This includes:
- The skcipher_walk_async() and skcipher_walk_complete() functions;
- The SKCIPHER_WALK_PHYS flag and everything conditional on it;
- The buffers, phys, and virt.page fields in struct skcipher_walk;
- struct skcipher_walk_buffer.
As a result, skcipher_walk now just supports virtual addresses.
Physical address support in skcipher_walk is unneeded because drivers
that need physical addresses just use the scatterlists directly.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Remove the driver for the Stream Processing Unit (SPU) on the Niagara 2.
Removing this driver allows removing the support for physical address
walks in skcipher_walk. That is a misfeature that is used only by this
driver and increases the overhead of the crypto API for everyone else.
There is little evidence that anyone cares about this driver. The
Niagara 2, a.k.a. the UltraSPARC T2, is a server CPU released in
2007. The SPU is also present on the SPARC T3, released in 2010.
However, the SPU went away in SPARC T4, released in 2012, which replaced
it with proper cryptographic instructions instead. These newer
instructions are supported by the kernel in arch/sparc/crypto/.
This driver was completely broken from (at least) 2015 to 2022, from
commit 8996eafdcb ("crypto: ahash - ensure statesize is non-zero") to
commit 76a4e87459 ("crypto: n2 - add missing hash statesize"), since
its probe function always returned an error before registering any
algorithms. Though, even with that obvious issue fixed, it is unclear
whether the driver now works correctly. E.g., there are no indications
that anyone has run the self-tests recently.
One bug report for this driver in 2017
(https://lore.kernel.org/r/nycvar.YFH.7.76.1712110214220.28416@n3.vanv.qr)
complained that it crashed the kernel while being loaded. The reporter
didn't seem to care about the functionality of the driver, but rather
just the fact that loading it crashed the kernel. In fact not until
2022 was the driver fixed to maybe actually register its algorithms with
the crypto API. The 2022 fix does have a Reported-by and Tested-by, but
that may similarly have been just about making the error messages go
away as opposed to someone actually wanting to use the driver.
As such, it seems appropriate to retire this driver in mainline.
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
As QCE is an order of magnitude slower than the ARMv8 Crypto Extensions
on the CPU, and is also less well tested, give it a lower priority.
Previously the QCE SHA algorithms had higher priority than the ARMv8 CE
equivalents, and the ciphers such as AES-XTS had the same priority which
meant the QCE versions were chosen if they happened to be loaded later.
Fixes: ec8f5d8f6f ("crypto: qce - Qualcomm crypto engine driver")
Cc: stable@vger.kernel.org
Cc: Bartosz Golaszewski <brgl@bgdev.pl>
Cc: Neil Armstrong <neil.armstrong@linaro.org>
Cc: Thara Gopinath <thara.gopinath@gmail.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Use a scoped guard to simplify the cleanup handling.
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Having switched to workqueue from tasklet, we are no longer limited to
atomic APIs and can now convert the spinlock to a mutex. This, along
with the conversion from tasklet to workqueue grants us ~15% improvement
in cryptsetup benchmarks for AES encryption.
While at it: use guards to simplify locking code.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
There's nothing about the qce driver that requires running from a
tasklet. Switch to using the system workqueue.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
The buffer allocated in qce_ahash_hmac_setkey is always freed before
returning to use __free() to automate it.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Make qce_register_algs() a managed interface. This allows us to further
simplify the remove() callback.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Make qce_dma_request() into a managed interface. With this we can
simplify the error path in probe() and drop another operations from
remove().
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Use devm_clk_get_optional_enabled() to avoid having to enable the clocks
separately as well as putting the clocks in error path and the remove()
callback.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
There's no need to call icc_set_bw(qce->mem_path, 0, 0); in error path
as this will already be done in the release path of devm_of_icc_get().
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
If we encounter an error when registering alorithms with the crypto
framework, we just bail out and don't unregister the ones we
successfully registered in prior iterations of the loop.
Add code that goes back over the algos and unregisters them before
returning an error from qce_register_algs().
Cc: stable@vger.kernel.org
Fixes: ec8f5d8f6f ("crypto: qce - Qualcomm crypto engine driver")
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
If qce_check_version() fails, we should jump to err_dma as we already
called qce_dma_request() a couple lines before.
Cc: stable@vger.kernel.org
Fixes: ec8f5d8f6f ("crypto: qce - Qualcomm crypto engine driver")
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
- Replaced jiffies with msec for timeout calculations.
- Added a sentinel to the 'of_device_id' array in Nomadik.
- Rounded up bus period calculation in RIIC.
-----BEGIN PGP SIGNATURE-----
iIwEABYIADQWIQScDfrjQa34uOld1VLaeAVmJtMtbgUCZ1xeZRYcYW5kaS5zaHl0
aUBrZXJuZWwub3JnAAoJENp4BWYm0y1uTXUA/1CUef8dQCvpiWRYIQX9XW6Jkuz0
NiH2YSlUc8b/UzphAP0W/JVhU1zGYzLfITgb0q+Yc6rw9ADtBd3EHlK3TRUyAw==
=lO8o
-----END PGP SIGNATURE-----
Merge tag 'i2c-host-fixes-6.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux into i2c/for-current
i2c-host-fixes for v6.13-rc3
- Replaced jiffies with msec for timeout calculations.
- Added a sentinel to the 'of_device_id' array in Nomadik.
- Rounded up bus period calculation in RIIC.
dwmac510_tc_ops and dwxgmac_tc_ops are completely identical,
keep dwmac510_tc_ops to provide better backward compatibility.
Signed-off-by: Furong Xu <0x1207@gmail.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Mateusz Polchlopek <mateusz.polchlopek@intel.com>
Link: https://patch.msgid.link/20241212033325.282817-1-0x1207@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Various drivers, mostly in platform/x86 extend the ACPI battery driver
with additional sysfs attributes to implement more UAPIs than are
exposed through ACPI by using various side-channels, like WMI,
nonstandard ACPI or EC communication.
While the created sysfs attributes look similar to the attributes
provided by the powersupply core, there are various deficiencies:
* They don't show up in uevent payload.
* They can't be queried with the standard in-kernel APIs.
* They don't work with triggers.
* The extending driver has to reimplement all of the parsing,
formatting and sysfs display logic.
* Writing a extension driver is completely different from writing a
normal power supply driver.
This extension API avoids all of these issues.
An extension is just a "struct power_supply_ext" with the same kind of
callbacks as in a normal "struct power_supply_desc".
The API is meant to be used via battery_hook_register(), the same way as
the current extensions.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20241211-power-supply-extensions-v6-1-9d9dc3f3d387@weissschuh.net
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
-----BEGIN PGP SIGNATURE-----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=SLxt
-----END PGP SIGNATURE-----
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.
-----BEGIN PGP SIGNATURE-----
iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmdc1aYACgkQJNaLcl1U
h9DtdQf/bLHHCCI9iV05c1besuy7CAWupvAtb+/gO86rj4khPu9CZjf6jL6j9ZvM
Eu80mfBmPJh4AU7I6MB/hllEs0+Xj+TAbm9A5nSmn5u273TL09bkqjS3N6QIMTJz
OS/trS+Jc/bxpXbwGKrEkxq0j/qU6MYB3v6MIjH6Q4Zfdobi5JNArpZaB/vJ8K02
iS424YT+6UI0GHvMu8wSa5ScUvn0TgovbtX/xCDxZDUN/o4JKdTgkCDAsn53m2L+
bUNv8bg/vJVB9KmCTdSOMn2z8OYTOeUgfUpsB9PSBbiLEzyIDT9Vq9UFeCC9DfOC
k+eY24koHeeRc/jEqMODCVMqTUnkaw==
=n/go
-----END PGP SIGNATURE-----
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.
-----BEGIN PGP SIGNATURE-----
iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmdc1T0ACgkQJNaLcl1U
h9CBpwf/WxAUzjsowzeNcnZ+gO71QCFSxHbX5mbbS+j/msUj1PDNPBmjZ8caT0V4
3w76E6xf4UZssTF/LvEZ4RVuNHHCsUQni/0840Z3lVujVVamXpXgDgk0DBX+XWVN
Kpnjoz1uFfNvPlPT28UL87rWNRAntREmiV+vGiVtw6wQ0WiA0598k/rkz8yg/uG4
TYpqiQGpksWv2t4LtAyhOMKvL7UK0+uaeu1rA6d6PXtI2/PS7cileZuglSBDtSwU
Z1aGQV4E7ccJFAVEeIAIkomf+/mo4XAcsPmtul0pyODCMI//NM5imbqMI/nD/5Og
2qUJkMqHNJOhq/cdDi2h6Q5Vq/JJgg==
=TEA/
-----END PGP SIGNATURE-----
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
-----BEGIN PGP SIGNATURE-----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=P9h4
-----END PGP SIGNATURE-----
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).
-----BEGIN PGP SIGNATURE-----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=CGTz
-----END PGP SIGNATURE-----
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).
-----BEGIN PGP SIGNATURE-----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=+2Vq
-----END PGP SIGNATURE-----
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>
The RMPREAD instruction returns an architecture defined format of an
RMP table entry. This is the preferred method for examining RMP entries.
The instruction is advertised in CPUID 0x8000001f_EAX[21]. Use this
instruction when available.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Nikunj A Dadhania <nikunj@amd.com>
Reviewed-by: Neeraj Upadhyay <Neeraj.Upadhyay@amd.com>
Reviewed-by: Ashish Kalra <ashish.kalra@amd.com>
Link: https://lore.kernel.org/r/72c734ac8b324bbc0c839b2c093a11af4a8881fa.1733172653.git.thomas.lendacky@amd.com
On gt reset, if a context is running, then accumulate it's active time
into the busyness counter since there will be no chance for the context
to switch out and update it's run time.
v2: Move comment right above the if (John)
Fixes: 77cdd054dd ("drm/i915/pmu: Connect engine busyness stats from GuC to pmu")
Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Reviewed-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241127174006.190128-4-umesh.nerlige.ramappa@intel.com
Active busyness of an engine is calculated using gt timestamp and the
context switch in time. While capturing the gt timestamp, it's possible
that the context switches out. This race could result in an active
busyness value that is greater than the actual context runtime value by a
small amount. This leads to a negative delta and throws off busyness
calculations for the user.
If a subsequent count is smaller than the previous one, just return the
previous one, since we expect the busyness to catch up.
Fixes: 77cdd054dd ("drm/i915/pmu: Connect engine busyness stats from GuC to pmu")
Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Reviewed-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241127174006.190128-3-umesh.nerlige.ramappa@intel.com
On GT reset, we store total busyness counts for all engines and
re-register the utilization buffer with GuC. At that time we should
reset the buffer, so that we don't get spurious busyness counts on
subsequent queries.
To repro this issue, run igt@perf_pmu@busy-hang followed by
igt@perf_pmu@most-busy-idle-check-all for a couple iterations.
Fixes: 77cdd054dd ("drm/i915/pmu: Connect engine busyness stats from GuC to pmu")
Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Reviewed-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241127174006.190128-2-umesh.nerlige.ramappa@intel.com
-----BEGIN PGP SIGNATURE-----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=trxL
-----END PGP SIGNATURE-----
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
-----BEGIN PGP SIGNATURE-----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=0uqv
-----END PGP SIGNATURE-----
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
-----BEGIN PGP SIGNATURE-----
iIoEABYKADIWIQSgX9xt+GwmrJEQ+euebuN7TNx1MQUCZ1x73BQcaXJhLndlaW55
QGludGVsLmNvbQAKCRCebuN7TNx1Md/JAQC1l9Fxu9FR4UW8nA+wgU0P8XYGKqmD
EqRUb82LI13f5QD/WtBQEVgBTxD5sVlMBjEGIuYE9hMZbdN0LB8wnK0HfQ8=
=87RX
-----END PGP SIGNATURE-----
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
These BTF functions are not available unconditionally,
only reference them when they are available.
Avoid the following build warnings:
BTF .tmp_vmlinux1.btf.o
btf_encoder__tag_kfunc: failed to find kfunc 'bpf_send_signal_task' in BTF
btf_encoder__tag_kfuncs: failed to tag kfunc 'bpf_send_signal_task'
NM .tmp_vmlinux1.syms
KSYMS .tmp_vmlinux1.kallsyms.S
AS .tmp_vmlinux1.kallsyms.o
LD .tmp_vmlinux2
NM .tmp_vmlinux2.syms
KSYMS .tmp_vmlinux2.kallsyms.S
AS .tmp_vmlinux2.kallsyms.o
LD vmlinux
BTFIDS vmlinux
WARN: resolve_btfids: unresolved symbol prog_test_ref_kfunc
WARN: resolve_btfids: unresolved symbol bpf_crypto_ctx
WARN: resolve_btfids: unresolved symbol bpf_send_signal_task
WARN: resolve_btfids: unresolved symbol bpf_modify_return_test_tp
WARN: resolve_btfids: unresolved symbol bpf_dynptr_from_xdp
WARN: resolve_btfids: unresolved symbol bpf_dynptr_from_skb
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20241213-bpf-cond-ids-v1-1-881849997219@weissschuh.net
Anton Protopopov says:
====================
Add fd_array_cnt attribute for BPF_PROG_LOAD
Add a new attribute to the bpf(BPF_PROG_LOAD) system call. If this
new attribute is non-zero, then the fd_array is considered to be a
continuous array of the fd_array_cnt length and to contain only
proper map file descriptors or btf file descriptors.
This change allows maps (and btfs), which aren't referenced directly
by a BPF program, to be bound to the program _and_ also to be present
during the program verification (so BPF_PROG_BIND_MAP is not enough
for this use case).
The primary reason for this change is that it is a prerequisite for
adding "instruction set" maps, which are both non-referenced by the
program and must be present during the program verification.
The first five commits add the new functionality, the sixth adds
corresponding self-tests, and the last one is a small additional fix.
v1 -> v2:
* rewrite the add_fd_from_fd_array() function (Eduard)
* a few cleanups in selftests (Eduard)
v2 -> v3:
* various renamings (Alexei)
* "0 is not special" (Alexei, Andrii)
* do not alloc memory on fd_array init (Alexei)
* fix leaking maps for error path (Hou Tao)
* use libbpf helpers vs. raw syscalls (Andrii)
* add comments on __btf_get_by_fd/__bpf_map_get (Alexei)
* remove extra code (Alexei)
v3 -> v4:
* simplify error path when parsing fd_array
* libbpf: pass fd_array_cnt only in prog_load (Alexei)
* selftests patch contained extra code (Alexei)
* renames, fix comments (Alexei)
v4 -> v5:
* Add btfs to env->used_btfs (Andrii)
* Fix an integer overflow (Andrii)
* A set of cleanups for selftests (Andrii)
====================
Link: https://patch.msgid.link/20241213130934.1087929-1-aspsk@isovalent.com
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Replace magic constants in a BTF structure initialization code by
proper macros, as is done in other similar selftests.
Suggested-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Anton Protopopov <aspsk@isovalent.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20241213130934.1087929-8-aspsk@isovalent.com
Add a new set of tests to test the new field in PROG_LOAD-related
part of bpf_attr: fd_array_cnt.
Add the following test cases:
* fd_array_cnt/no-fd-array: program is loaded in a normal
way, without any fd_array present
* fd_array_cnt/fd-array-ok: pass two extra non-used maps,
check that they're bound to the program
* fd_array_cnt/fd-array-dup-input: pass a few extra maps,
only two of which are unique
* fd_array_cnt/fd-array-ref-maps-in-array: pass a map in
fd_array which is also referenced from within the program
* fd_array_cnt/fd-array-trash-input: pass array with some trash
* fd_array_cnt/fd-array-2big: pass too large array
All the tests above are using the bpf(2) syscall directly,
no libbpf involved.
Signed-off-by: Anton Protopopov <aspsk@isovalent.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20241213130934.1087929-7-aspsk@isovalent.com
Add new fd_array_cnt field to bpf_prog_load_opts
and pass it in bpf_attr, if set.
Signed-off-by: Anton Protopopov <aspsk@isovalent.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20241213130934.1087929-6-aspsk@isovalent.com
The fd_array attribute of the BPF_PROG_LOAD syscall may contain a set
of file descriptors: maps or btfs. This field was introduced as a
sparse array. Introduce a new attribute, fd_array_cnt, which, if
present, indicates that the fd_array is a continuous array of the
corresponding length.
If fd_array_cnt is non-zero, then every map in the fd_array will be
bound to the program, as if it was used by the program. This
functionality is similar to the BPF_PROG_BIND_MAP syscall, but such
maps can be used by the verifier during the program load.
Signed-off-by: Anton Protopopov <aspsk@isovalent.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20241213130934.1087929-5-aspsk@isovalent.com
Introduce a helper to add btfs to the env->used_maps array. Use it
to simplify the check_pseudo_btf_id() function. This new helper will
also be re-used in a consequent patch.
Signed-off-by: Anton Protopopov <aspsk@isovalent.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20241213130934.1087929-4-aspsk@isovalent.com
Move some inlined map/prog compatibility checks from the
resolve_pseudo_ldimm64() function to the dedicated
check_map_prog_compatibility() function. Call the latter function
from the add_used_map_from_fd() function directly.
This simplifies code and optimizes logic a bit, as before these
changes the check_map_prog_compatibility() function was executed on
every map usage, which doesn't make sense, as it doesn't include any
per-instruction checks, only map type vs. prog type.
(This patch also simplifies a consequent patch which will call the
add_used_map_from_fd() function from another code path.)
Signed-off-by: Anton Protopopov <aspsk@isovalent.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20241213130934.1087929-3-aspsk@isovalent.com
Add a new helper to get a pointer to a struct btf from a file
descriptor. This helper doesn't increase a refcnt. Add a comment
explaining this and pointing to a corresponding function which
does take a reference.
Signed-off-by: Anton Protopopov <aspsk@isovalent.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20241213130934.1087929-2-aspsk@isovalent.com
