| commit | 3fb5a991916091a908d53608a5899240039fb51e | |
| author | Li Zefan <lizf@cn.fujitsu.com> | |
| Thu, 2 Sep 2010 15:42:43 +0000 (2 15:42 +0000) | ||
| committer | David S. Miller <davem@davemloft.net> | |
| Fri, 3 Sep 2010 16:55:24 +0000 (3 09:55 -0700) | ||
| tree | fa8e5855de904daffba92bd177fa57ee85641521 | treesnapshot (tar.gz zip) |
| parent | 323f30b361b2e6febb9065ab4a1a5298acb66ac1 | commitdiff |
cls_cgroup: Fix rcu lockdep warning
Dave reported an rcu lockdep warning on 2.6.35.4 kernel
task->cgroups and task->cgroups->subsys[i] are protected by RCU.
So we avoid accessing invalid pointers here. This might happen,
for example, when you are deref-ing those pointers while someone
move @task from one cgroup to another.
Reported-by: Dave Jones <davej@redhat.com>
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dave reported an rcu lockdep warning on 2.6.35.4 kernel
task->cgroups and task->cgroups->subsys[i] are protected by RCU.
So we avoid accessing invalid pointers here. This might happen,
for example, when you are deref-ing those pointers while someone
move @task from one cgroup to another.
Reported-by: Dave Jones <davej@redhat.com>
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| include/net/cls_cgroup.h | diffblobblamehistory |