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| author | Andrey Konovalov <andreyknvl@gmail.com> | 2021-09-02 14:57:50 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-03 09:58:15 -0700 |
| commit | 756e5a47a5ddf0caa3708f922385a92af9d330b5 (patch) | |
| tree | 1c618d2af4e73a19ed9bbbd3760ffb24b57735a0 /tools/perf/scripts/python/export-to-sqlite.py | |
| parent | b38fcca339dbcf680c9e43054502608fabc81508 (diff) | |
kasan: test: avoid corrupting memory in copy_user_test
copy_user_test() does writes past the allocated object. As the result, it
corrupts kernel memory, which might lead to crashes with the HW_TAGS mode,
as it neither uses quarantine nor redzones.
(Technically, this test can't yet be enabled with the HW_TAGS mode, but
this will be implemented in the future.)
Adjust the test to only write memory within the aligned kmalloc object.
Link: https://lkml.kernel.org/r/19bf3a5112ee65b7db88dc731643b657b816c5e8.1628779805.git.andreyknvl@gmail.com
Signed-off-by: Andrey Konovalov <andreyknvl@gmail.com>
Reviewed-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-sqlite.py')
0 files changed, 0 insertions, 0 deletions