diff options
| author | Vincenzo Frascino <vincenzo.frascino@arm.com> | 2022-04-15 04:13:37 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-04-15 23:49:55 +0200 |
| commit | b1add418d457bc30cdd6a89c2bba092cd8941fcf (patch) | |
| tree | d2607a6bd08ee8412db3891cfbe9c185b18ec136 /mm/sparse.c | |
| parent | irq_work: use kasan_record_aux_stack_noalloc() record callstack (diff) | |
| download | linux-b1add418d457bc30cdd6a89c2bba092cd8941fcf.tar.xz linux-b1add418d457bc30cdd6a89c2bba092cd8941fcf.zip | |
kasan: fix hw tags enablement when KUNIT tests are disabled
Kasan enables hw tags via kasan_enable_tagging() which based on the mode
passed via kernel command line selects the correct hw backend.
kasan_enable_tagging() is meant to be invoked indirectly via the cpu
features framework of the architectures that support these backends.
Currently the invocation of this function is guarded by
CONFIG_KASAN_KUNIT_TEST which allows the enablement of the correct backend
only when KUNIT tests are enabled in the kernel.
This inconsistency was introduced in commit:
ed6d74446cbf ("kasan: test: support async (again) and asymm modes for HW_TAGS")
... and prevents to enable MTE on arm64 when KUNIT tests for kasan hw_tags are
disabled.
Fix the issue making sure that the CONFIG_KASAN_KUNIT_TEST guard does not
prevent the correct invocation of kasan_enable_tagging().
Link: https://lkml.kernel.org/r/20220408124323.10028-1-vincenzo.frascino@arm.com
Fixes: ed6d74446cbf ("kasan: test: support async (again) and asymm modes for HW_TAGS")
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/sparse.c')
0 files changed, 0 insertions, 0 deletions