Re: Lockdep splat involving all_q_mutex

2017-05-11 Thread Paul E. McKenney
On Thu, May 11, 2017 at 01:23:44PM -0700, Paul E. McKenney wrote: > On Thu, May 11, 2017 at 02:12:39PM -0600, Jens Axboe wrote: > > On 05/10/2017 09:13 PM, Paul E. McKenney wrote: > > > On Wed, May 10, 2017 at 08:55:54PM -0600, Jens Axboe wrote: > > >> On 05/10/2017 04:34 PM, Paul E. McKenney wrote

Re: Lockdep splat involving all_q_mutex

2017-05-11 Thread Paul E. McKenney
On Thu, May 11, 2017 at 02:12:39PM -0600, Jens Axboe wrote: > On 05/10/2017 09:13 PM, Paul E. McKenney wrote: > > On Wed, May 10, 2017 at 08:55:54PM -0600, Jens Axboe wrote: > >> On 05/10/2017 04:34 PM, Paul E. McKenney wrote: > >>> Hello! > >>> > >>> I got the lockdep splat shown below during some

Re: Lockdep splat involving all_q_mutex

2017-05-11 Thread Jens Axboe
On 05/10/2017 09:13 PM, Paul E. McKenney wrote: > On Wed, May 10, 2017 at 08:55:54PM -0600, Jens Axboe wrote: >> On 05/10/2017 04:34 PM, Paul E. McKenney wrote: >>> Hello! >>> >>> I got the lockdep splat shown below during some rcutorture testing (which >>> does CPU hotplug operations) on mainline

Re: Lockdep splat involving all_q_mutex

2017-05-10 Thread Paul E. McKenney
On Wed, May 10, 2017 at 08:55:54PM -0600, Jens Axboe wrote: > On 05/10/2017 04:34 PM, Paul E. McKenney wrote: > > Hello! > > > > I got the lockdep splat shown below during some rcutorture testing (which > > does CPU hotplug operations) on mainline at commit dc9edaab90de ("Merge > > tag 'acpi-extra

Re: Lockdep splat involving all_q_mutex

2017-05-10 Thread Jens Axboe
On 05/10/2017 04:34 PM, Paul E. McKenney wrote: > Hello! > > I got the lockdep splat shown below during some rcutorture testing (which > does CPU hotplug operations) on mainline at commit dc9edaab90de ("Merge > tag 'acpi-extra-4.12-rc1' of git://git.kernel.org/.../rafael/linux-pm"). > My kneejerk