linux/mm/kasan
Dmitry Vyukov 6860f6340c kasan: detect invalid frees for large mempool objects
Detect frees of pointers into middle of mempool objects.

I did a one-off test, but it turned out to be very tricky, so I reverted
it.  First, mempool does not call kasan_poison_kfree() unless allocation
function fails.  I stubbed an allocation function to fail on second and
subsequent allocations.  But then mempool stopped to call
kasan_poison_kfree() at all, because it does it only when allocation
function is mempool_kmalloc().  We could support this special failing
test allocation function in mempool, but it also can't live with kasan
tests, because these are in a module.

Link: http://lkml.kernel.org/r/bf7a7d035d7a5ed62d2dd0e3d2e8a4fcdf456aa7.1514378558.git.dvyukov@google.com
Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>a
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-02-06 18:32:43 -08:00
..
kasan_init.c mm/kasan/kasan_init.c: use kasan_zero_pud for p4d table 2017-07-10 16:32:33 -07:00
kasan.c kasan: detect invalid frees for large mempool objects 2018-02-06 18:32:43 -08:00
kasan.h kasan: don't use __builtin_return_address(1) 2018-02-06 18:32:43 -08:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
quarantine.c kasan: fix races in quarantine_remove_cache() 2017-03-09 17:01:10 -08:00
report.c kasan: don't use __builtin_return_address(1) 2018-02-06 18:32:43 -08:00