On Wed, Apr 19, 2017 at 10:15:59AM +0800, Zefan Li wrote:
> Commit bfb0b80db5f9 is broken. Now we try to fix the race by delaying
> the initialization of cgroup root refcnt until a superblock has been
> allocated.
>
> Cc: sta...@vger.kernel.org # 3.16+
> Reported-by: Dmitry Vyukov
> Reported-by: A
Commit bfb0b80db5f9 is broken. Now we try to fix the race by delaying
the initialization of cgroup root refcnt until a superblock has been
allocated.
Cc: sta...@vger.kernel.org # 3.16+
Reported-by: Dmitry Vyukov
Reported-by: Andrei Vagin
Tested-by: Andrei Vagin
Signed-off-by: Zefan Li
---
I a
On Fri, Apr 07, 2017 at 04:51:55PM +0800, Zefan Li wrote:
> We end up using the same cgroup root for two different superblocks,
> so percpu_ref_kill() will be called twice on the same root when the
> two superblocks are destroyed.
>
> We should fix to make sure the superblock pinning is really suc
Run this:
touch file0
for ((; ;))
{
mount -t cpuset xxx file0
}
And this concurrently:
touch file1
for ((; ;))
{
mount -t cpuset xxx file1
}
We'll trigger a warning like this:
[ cut here ]
WARNING: CPU: 1 PID: 4675 at li
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