https://github.com/torvalds/linux
Revision 1bc11d70b5db7c6bb1414b283d7f09b1fe1ac0d0 authored by Alexander Polakov on 28 October 2016, 00:46:27 UTC, committed by Linus Torvalds on 28 October 2016, 01:43:42 UTC
As described in https://bugzilla.kernel.org/show_bug.cgi?id=177821: After some analysis it seems to be that the problem is in alloc_super(). In case list_lru_init_memcg() fails it goes into destroy_super(), which calls list_lru_destroy(). And in list_lru_init() we see that in case memcg_init_list_lru() fails, lru->node is freed, but not set NULL, which then leads list_lru_destroy() to believe it is initialized and call memcg_destroy_list_lru(). memcg_destroy_list_lru() in turn can access lru->node[i].memcg_lrus, which is NULL. [akpm@linux-foundation.org: add comment] Signed-off-by: Alexander Polakov <apolyakov@beget.ru> Acked-by: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Tip revision: 1bc11d70b5db7c6bb1414b283d7f09b1fe1ac0d0 authored by Alexander Polakov on 28 October 2016, 00:46:27 UTC
mm/list_lru.c: avoid error-path NULL pointer deref
mm/list_lru.c: avoid error-path NULL pointer deref
Tip revision: 1bc11d7
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Kconfig | -rw-r--r-- | 3.3 KB |
Makefile | -rw-r--r-- | 4.9 KB |
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