On (12/31/15 18:58), Serge E. Hallyn wrote:
[..]
> Thanks! Following trivial patch should fix this:
confirmed, thanks!
Tested-by: Sergey Senozhatsky <sergey.senozhat...@gmail.com>
-ss
> From fc54592077533ff2ff90ed54b72bf03b4378ca9f Mon Sep 17 00:00:00 2001
> From: Serge Hallyn <serge.hal...@ubuntu.com>
> Date: Thu, 31 Dec 2015 16:55:19 -0800
> Subject: [PATCH 1/1] cgroup_release_agent: grab css_set_lock around
> cgroup_path()
>
> Reported-by: Sergey Senozhatsky <sergey.senozhat...@gmail.com>
> Signed-off-by: Serge Hallyn <serge.hal...@ubuntu.com>
> ---
> kernel/cgroup.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/kernel/cgroup.c b/kernel/cgroup.c
> index 4812f59..d10f127 100644
> --- a/kernel/cgroup.c
> +++ b/kernel/cgroup.c
> @@ -5769,7 +5769,9 @@ static void cgroup_release_agent(struct work_struct
> *work)
> if (!pathbuf || !agentbuf)
> goto out;
>
> + spin_lock_bh(&css_set_lock);
> path = cgroup_path(cgrp, pathbuf, PATH_MAX);
> + spin_unlock_bh(&css_set_lock);
> if (!path)
> goto out;
>
> --
> 2.5.0
>
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