https://github.com/torvalds/linux
Revision e00e431612c3a6e437a01f2129fd3843da0c982a authored by KAMEZAWA Hiroyuki on 11 November 2009, 22:26:26 UTC, committed by Linus Torvalds on 12 November 2009, 15:25:56 UTC
Lee Schermerhorn reported that he saw bad pointer dereference in mem_cgroup_end_migration() when he disabled memcg by boot option. memcg's page migration logic works as mem_cgroup_prepare_migration(page, &ptr); do page migration mem_cgroup_end_migration(page, ptr); Now, ptr is not initialized in prepare_migration when memcg is disabled by boot option. This causes panic in end_migration. This patch fixes it. Reported-by: Lee Schermerhorn <Lee.Schermerhorn@hp.com> Cc: Balbir Singh <balbir@in.ibm.com> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Reviewed-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: <stable@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: e00e431612c3a6e437a01f2129fd3843da0c982a authored by KAMEZAWA Hiroyuki on 11 November 2009, 22:26:26 UTC
memcg: fix wrong pointer initialization at page migration when memcg is disabled.
memcg: fix wrong pointer initialization at page migration when memcg is disabled.
Tip revision: e00e431
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| .gitignore | -rw-r--r-- | 952 bytes |
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