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| author |   Robin Murphy <robin.murphy@arm.com> | 2021-09-17 15:59:30 +0100 |
|---|---|---|
| committer |   Catalin Marinas <catalin.marinas@arm.com> | 2021-09-21 14:50:19 +0100 |
| commit | 59a68d4138086c015ab8241c3267eec5550fbd44 (patch) | |
| tree | 833d1831affb5f492aceb9beaffe977d07d72b25 /tools/testing/selftests/arm64 | |
| parent | arm64: add MTE supported check to thread switching and syscall entry/exit (diff) | |
| download | linux-dev-59a68d4138086c015ab8241c3267eec5550fbd44.tar.xz linux-dev-59a68d4138086c015ab8241c3267eec5550fbd44.zip | |
arm64: Mitigate MTE issues with str{n}cmp()
As with strlen(), the patches importing the updated str{n}cmp()
implementations were originally developed and tested before the
advent of CONFIG_KASAN_HW_TAGS, and have subsequently revealed
not to be MTE-safe. Since in-kernel MTE is still a rather niche
case, let it temporarily fall back to the generic C versions for
correctness until we can figure out the best fix.
Fixes: 758602c04409 ("arm64: Import latest version of Cortex Strings' strcmp")
Fixes: 020b199bc70d ("arm64: Import latest version of Cortex Strings' strncmp")
Cc: <stable@vger.kernel.org> # 5.14.x
Reported-by: Branislav Rankov <branislav.rankov@arm.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/34dc4d12eec0adae49b0ac927df642ed10089d40.1631890770.git.robin.murphy@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'tools/testing/selftests/arm64')
0 files changed, 0 insertions, 0 deletions