| commit | 33c35aa4817864e056fd772230b0c6b552e36ea2 | [log] [tgz] |
|---|---|---|
| author | Waiman Long <longman@redhat.com> | Mon May 15 09:34:06 2017 -0400 |
| committer | Tejun Heo <tj@kernel.org> | Wed May 17 16:58:32 2017 -0400 |
| tree | c5eea540e4e818e11aa809d7652cface407203e7 | |
| parent | 2ea659a9ef488125eb46da6eb571de5eae5c43f6 [diff] |
cgroup: Prevent kill_css() from being called more than once The kill_css() function may be called more than once under the condition that the css was killed but not physically removed yet followed by the removal of the cgroup that is hosting the css. This patch prevents any harmm from being done when that happens. Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org> Cc: stable@vger.kernel.org # v4.5+