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| author |   Alexander Popov <alex.popov@linux.com> | 2017-09-06 16:19:22 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-06 17:27:24 -0700 |
| commit | ce6fa91b93630396ca220c33dd38ffc62686d499 (patch) | |
| tree | 939b1ef1b6399f6656f3f7764227b4db7e8dee24 /include/linux/shrinker.h | |
| parent | mm: add SLUB free list pointer obfuscation (diff) | |
| download | wireguard-linux-ce6fa91b93630396ca220c33dd38ffc62686d499.tar.xz wireguard-linux-ce6fa91b93630396ca220c33dd38ffc62686d499.zip | |
mm/slub.c: add a naive detection of double free or corruption
Add an assertion similar to "fasttop" check in GNU C Library allocator
as a part of SLAB_FREELIST_HARDENED feature. An object added to a
singly linked freelist should not point to itself. That helps to detect
some double free errors (e.g. CVE-2017-2636) without slub_debug and
KASAN.
Link: http://lkml.kernel.org/r/1502468246-1262-1-git-send-email-alex.popov@linux.com
Signed-off-by: Alexander Popov <alex.popov@linux.com>
Acked-by: Christoph Lameter <cl@linux.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Paul E McKenney <paulmck@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Nicolas Pitre <nicolas.pitre@linaro.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Tycho Andersen <tycho@docker.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/shrinker.h')
0 files changed, 0 insertions, 0 deletions