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authorLai Jiangshan <laijs@cn.fujitsu.com>2009-01-07 18:08:39 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-08 08:31:11 -0800
commit13337714f3b0307dc7f75ef5d83ecf0db2abbd65 (patch)
treef76dd8961b9287b25e2ea24d2d34fecc52d2c8a0 /kernel/kgdb.c
parente7c5ec9193d32b9559a3bb8893ceedbda85201ff (diff)
cpuset: rcu_read_lock() to protect task_cs()
task_cs() calls task_subsys_state(). We must use rcu_read_lock() to protect cgroup_subsys_state(). It's correct that top_cpuset is never freed, but cgroup_subsys_state() accesses css_set, this css_set maybe freed when task_cs() called. We use use rcu_read_lock() to protect it. Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Acked-by: Paul Menage <menage@google.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Pavel Emelyanov <xemul@openvz.org> Cc: Balbir Singh <balbir@in.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/kgdb.c')
0 files changed, 0 insertions, 0 deletions