Messages in this thread Patch in this message | | | Date | Tue, 20 Dec 2011 11:28:16 -0800 | From | Tejun Heo <> | Subject | [GIT PULL] cgroup fixes for v3.2-rc6 |
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Hello, Linus.
Trying to migrating a zombie task hits BUG. This is already fixed in the devel branch with the threadgroup locking and this is only for v3.2 and -stable. The fix is simple - not skipping PF_EXITING tasks in cgroup_attach_proc() preparation steps is enough.
Please pull from the following git branch to receive the fix.
git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git for-3.2-fixes
Thank you.
Mandeep Singh Baines (1): cgroups: fix a css_set not found bug in cgroup_attach_proc
kernel/cgroup.c | 5 ----- 1 files changed, 0 insertions(+), 5 deletions(-) --- diff --git a/kernel/cgroup.c b/kernel/cgroup.c index d9d5648..a184470 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -2098,11 +2098,6 @@ int cgroup_attach_proc(struct cgroup *cgrp, struct task_struct *leader) continue; /* get old css_set pointer */ task_lock(tsk); - if (tsk->flags & PF_EXITING) { - /* ignore this task if it's going away */ - task_unlock(tsk); - continue; - } oldcg = tsk->cgroups; get_css_set(oldcg); task_unlock(tsk);
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