diff options
| author | Takamori Yamaguchi <takamori.yamaguchi@jp.sony.com> | 2012-11-08 15:53:39 -0800 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2012-11-16 16:47:13 +0000 |
| commit | 3f2a7f33cab017aaf692a499439b8cd6b8998c7f (patch) | |
| tree | 837f68d84ed595d8866ba4fe9934864ae903ad69 /mm/vmalloc.c | |
| parent | ca6072f097be890dc39ad6423522ab7bda42d0b7 (diff) | |
mm: bugfix: set current->reclaim_state to NULL while returning from kswapd()
commit b0a8cc58e6b9aaae3045752059e5e6260c0b94bc upstream.
In kswapd(), set current->reclaim_state to NULL before returning, as
current->reclaim_state holds reference to variable on kswapd()'s stack.
In rare cases, while returning from kswapd() during memory offlining,
__free_slab() and freepages() can access the dangling pointer of
current->reclaim_state.
Signed-off-by: Takamori Yamaguchi <takamori.yamaguchi@jp.sony.com>
Signed-off-by: Aaditya Kumar <aaditya.kumar@ap.sony.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'mm/vmalloc.c')
0 files changed, 0 insertions, 0 deletions