Re: cgroup: WARNING in cgroup_kill_sb

2017-03-09 Thread Dmitry Vyukov
On Thu, Mar 9, 2017 at 10:24 AM, Zefan Li wrote: > On 2017/3/3 3:15, Dmitry Vyukov wrote: >> Hello, >> >> The following program triggers WARNING in cgroup_kill_sb: >> https://gist.githubusercontent.com/dvyukov/47a37d3b899ece1f57e512dc6c90bca6/raw/250894f3d6e2954eed01bac39e4c3b7ec59a9c31/gistfile1.

Re: cgroup: WARNING in cgroup_kill_sb

2017-03-09 Thread Zefan Li
On 2017/3/3 3:15, Dmitry Vyukov wrote: > Hello, > > The following program triggers WARNING in cgroup_kill_sb: > https://gist.githubusercontent.com/dvyukov/47a37d3b899ece1f57e512dc6c90bca6/raw/250894f3d6e2954eed01bac39e4c3b7ec59a9c31/gistfile1.txt > > > WARNING: CPU: 2 PID: 3092 at lib/percpu-ref

Re: cgroup: WARNING in cgroup_kill_sb

2017-03-07 Thread Tejun Heo
On Tue, Mar 07, 2017 at 10:11:59AM +0100, Dmitry Vyukov wrote: > No, still happens. Please run the repro. Oh, I did run it but it didn't trigger the failure here. Can you please let me know the kernel version, config, system setup and usual trigger duration? Thanks. -- tejun

Re: cgroup: WARNING in cgroup_kill_sb

2017-03-07 Thread Dmitry Vyukov
On Mon, Mar 6, 2017 at 10:55 PM, Tejun Heo wrote: > Hello, Dmitry. > > Can you please see whether the following patch resolves the issue? > I'm a bit nervous about it ending up in circular dependency, but I > *think* it should be okay. > > Thanks. > > diff --git a/kernel/cgroup/cgroup.c b/kernel/c

Re: cgroup: WARNING in cgroup_kill_sb

2017-03-06 Thread Tejun Heo
Hello, Dmitry. Can you please see whether the following patch resolves the issue? I'm a bit nervous about it ending up in circular dependency, but I *think* it should be okay. Thanks. diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index 0125589..9c40421 100644 --- a/kernel/cgroup/c