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| author | Lai Jiangshan <laijs@cn.fujitsu.com> | 2009-01-07 18:08:39 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-08 08:31:11 -0800 |
| commit | 13337714f3b0307dc7f75ef5d83ecf0db2abbd65 (patch) | |
| tree | f76dd8961b9287b25e2ea24d2d34fecc52d2c8a0 /kernel/bounds.c | |
| parent | e7c5ec9193d32b9559a3bb8893ceedbda85201ff (diff) | |
| download | linux-13337714f3b0307dc7f75ef5d83ecf0db2abbd65.tar.gz linux-13337714f3b0307dc7f75ef5d83ecf0db2abbd65.tar.bz2 linux-13337714f3b0307dc7f75ef5d83ecf0db2abbd65.zip | |
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/bounds.c')
0 files changed, 0 insertions, 0 deletions