diff options
| author | Andrey Konovalov <[email protected]> | 2021-09-02 14:57:50 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2021-09-03 09:58:15 -0700 |
| commit | 756e5a47a5ddf0caa3708f922385a92af9d330b5 (patch) | |
| tree | 1c618d2af4e73a19ed9bbbd3760ffb24b57735a0 /lib/mpi/mpi-mul.c | |
| 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 <[email protected]>
Reviewed-by: Marco Elver <[email protected]>
Cc: Alexander Potapenko <[email protected]>
Cc: Andrey Ryabinin <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'lib/mpi/mpi-mul.c')
0 files changed, 0 insertions, 0 deletions