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| author | Andrey Konovalov <andreyknvl@gmail.com> | 2021-09-02 23:57:53 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-03 18:58:15 +0200 |
| commit | f16de0bcdb55bf18e2533ca625f3e4b4952f254c (patch) | |
| tree | 154d330c2fc2ccec05d47e93b90c14e4b334b610 /lib/math | |
| parent | kasan: test: avoid corrupting memory in copy_user_test (diff) | |
| download | linux-f16de0bcdb55bf18e2533ca625f3e4b4952f254c.tar.xz linux-f16de0bcdb55bf18e2533ca625f3e4b4952f254c.zip | |
kasan: test: avoid corrupting memory in kasan_rcu_uaf
kasan_rcu_uaf() writes to freed memory via kasan_rcu_reclaim(), which is
only safe with the GENERIC mode (as it uses quarantine). For other modes,
this test corrupts kernel memory, which might result in a crash.
Turn the write into a read.
Link: https://lkml.kernel.org/r/b6f2c3bf712d2457c783fa59498225b66a634f62.1628779805.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 'lib/math')
0 files changed, 0 insertions, 0 deletions