25743552b5c637
parent df8bc08c192f00f155185bfd6f052d46a728814a
author Li Zefan <lizf@cn.fujitsu.com> 1225314051 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1225391925 -0700

freezer_cg: fix improper BUG_ON() causing oops

The BUG_ON() should be protected by freezer->lock, otherwise it can be
triggered easily when a task has been unfreezed but the corresponding
cgroup hasn't been changed to FROZEN state.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Cedric Le Goater <clg@fr.ibm.com>
Acked-by: Matt Helsley <matthltc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>