Re: WARNING: CPU: 3 PID: 1568 at kernel/sched/core.c:7738 __might_sleep+0x69/0x7e

2016-12-21 Thread Michal Hocko
On Wed 21-12-16 11:24:47, Cong Wang wrote: > On Wed, Dec 21, 2016 at 2:47 AM, Michal Hocko wrote: > > > > Is there anything I could test? > > I am working on a patchset, will send them for you to test. Meanwhile, > if you could provide me a reproducer, that would help a lot.

Re: WARNING: CPU: 3 PID: 1568 at kernel/sched/core.c:7738 __might_sleep+0x69/0x7e

2016-12-21 Thread Michal Hocko
On Wed 21-12-16 11:24:47, Cong Wang wrote: > On Wed, Dec 21, 2016 at 2:47 AM, Michal Hocko wrote: > > > > Is there anything I could test? > > I am working on a patchset, will send them for you to test. Meanwhile, > if you could provide me a reproducer, that would help a lot. I just boot my kvm

Re: WARNING: CPU: 3 PID: 1568 at kernel/sched/core.c:7738 __might_sleep+0x69/0x7e

2016-12-21 Thread Cong Wang
On Wed, Dec 21, 2016 at 2:47 AM, Michal Hocko wrote: > > Is there anything I could test? I am working on a patchset, will send them for you to test. Meanwhile, if you could provide me a reproducer, that would help a lot. Thanks!

Re: WARNING: CPU: 3 PID: 1568 at kernel/sched/core.c:7738 __might_sleep+0x69/0x7e

2016-12-21 Thread Cong Wang
On Wed, Dec 21, 2016 at 2:47 AM, Michal Hocko wrote: > > Is there anything I could test? I am working on a patchset, will send them for you to test. Meanwhile, if you could provide me a reproducer, that would help a lot. Thanks!

Re: WARNING: CPU: 3 PID: 1568 at kernel/sched/core.c:7738 __might_sleep+0x69/0x7e

2016-12-21 Thread Michal Hocko
oot in my kvm testing > > > environment: > > > [3.549649] WARNING: CPU: 3 PID: 1568 at kernel/sched/core.c:7738 > > > __might_sleep+0x69/0x7e > > > [3.551279] do not call blocking ops when !TASK_RUNNING; state=2 set > > > at [] prepare_to_wa

Re: WARNING: CPU: 3 PID: 1568 at kernel/sched/core.c:7738 __might_sleep+0x69/0x7e

2016-12-21 Thread Michal Hocko
oot in my kvm testing > > > environment: > > > [3.549649] WARNING: CPU: 3 PID: 1568 at kernel/sched/core.c:7738 > > > __might_sleep+0x69/0x7e > > > [3.551279] do not call blocking ops when !TASK_RUNNING; state=2 set > > > at [] prepare_to_wa

Re: WARNING: CPU: 3 PID: 1568 at kernel/sched/core.c:7738 __might_sleep+0x69/0x7e

2016-12-12 Thread Shaohua Li
On Mon, Dec 12, 2016 at 05:03:49PM -0500, Tejun Heo wrote: > Hello, Michal. > > On Fri, Dec 09, 2016 at 04:12:29PM +0100, Michal Hocko wrote: > > Hi Tejun, > > I am seeing the following warning during boot in my kvm testing > > environment: > > [ 3.549649] WA

Re: WARNING: CPU: 3 PID: 1568 at kernel/sched/core.c:7738 __might_sleep+0x69/0x7e

2016-12-12 Thread Shaohua Li
On Mon, Dec 12, 2016 at 05:03:49PM -0500, Tejun Heo wrote: > Hello, Michal. > > On Fri, Dec 09, 2016 at 04:12:29PM +0100, Michal Hocko wrote: > > Hi Tejun, > > I am seeing the following warning during boot in my kvm testing > > environment: > > [ 3.549649] WA

Re: WARNING: CPU: 3 PID: 1568 at kernel/sched/core.c:7738 __might_sleep+0x69/0x7e

2016-12-12 Thread Cong Wang
On Mon, Dec 12, 2016 at 2:03 PM, Tejun Heo wrote: > Hello, Michal. > > On Fri, Dec 09, 2016 at 04:12:29PM +0100, Michal Hocko wrote: >> At first I thought this would be related to you recent work >> http://lkml.kernel.org/r/1477673892-28940-1-git-send-email...@kernel.org >> but

Re: WARNING: CPU: 3 PID: 1568 at kernel/sched/core.c:7738 __might_sleep+0x69/0x7e

2016-12-12 Thread Cong Wang
On Mon, Dec 12, 2016 at 2:03 PM, Tejun Heo wrote: > Hello, Michal. > > On Fri, Dec 09, 2016 at 04:12:29PM +0100, Michal Hocko wrote: >> At first I thought this would be related to you recent work >> http://lkml.kernel.org/r/1477673892-28940-1-git-send-email...@kernel.org >> but that doesn't seem

Re: WARNING: CPU: 3 PID: 1568 at kernel/sched/core.c:7738 __might_sleep+0x69/0x7e

2016-12-12 Thread Tejun Heo
Hello, Michal. On Fri, Dec 09, 2016 at 04:12:29PM +0100, Michal Hocko wrote: > Hi Tejun, > I am seeing the following warning during boot in my kvm testing > environment: > [ 3.549649] WARNING: CPU: 3 PID: 1568 at kernel/sched/core.c:7738 > __might_sleep+0x69/0x7e > [3.5

Re: WARNING: CPU: 3 PID: 1568 at kernel/sched/core.c:7738 __might_sleep+0x69/0x7e

2016-12-12 Thread Tejun Heo
Hello, Michal. On Fri, Dec 09, 2016 at 04:12:29PM +0100, Michal Hocko wrote: > Hi Tejun, > I am seeing the following warning during boot in my kvm testing > environment: > [ 3.549649] WARNING: CPU: 3 PID: 1568 at kernel/sched/core.c:7738 > __might_sleep+0x69/0x7e > [3.5

WARNING: CPU: 3 PID: 1568 at kernel/sched/core.c:7738 __might_sleep+0x69/0x7e

2016-12-09 Thread Michal Hocko
Hi Tejun, I am seeing the following warning during boot in my kvm testing environment: [3.549649] WARNING: CPU: 3 PID: 1568 at kernel/sched/core.c:7738 __might_sleep+0x69/0x7e [3.551279] do not call blocking ops when !TASK_RUNNING; state=2 set at [] prepare_to_wait+0x65/0xac

WARNING: CPU: 3 PID: 1568 at kernel/sched/core.c:7738 __might_sleep+0x69/0x7e

2016-12-09 Thread Michal Hocko
Hi Tejun, I am seeing the following warning during boot in my kvm testing environment: [3.549649] WARNING: CPU: 3 PID: 1568 at kernel/sched/core.c:7738 __might_sleep+0x69/0x7e [3.551279] do not call blocking ops when !TASK_RUNNING; state=2 set at [] prepare_to_wait+0x65/0xac