Re: cpu_hotplug vs oom_notify_list: possible circular locking dependency detected

2015-07-20 Thread Paul E. McKenney
On Sun, Jul 19, 2015 at 11:58:18AM +0200, Marcin Ślusarz wrote: > On Thu, Jul 16, 2015 at 02:01:56PM -0700, David Rientjes wrote: > > On Wed, 15 Jul 2015, Paul E. McKenney wrote: > > > > > On Tue, Jul 14, 2015 at 04:48:24PM -0700, David Rientjes wrote: > > > > On Tue, 14 Jul 2015, Paul E.

Re: cpu_hotplug vs oom_notify_list: possible circular locking dependency detected

2015-07-20 Thread Paul E. McKenney
On Sun, Jul 19, 2015 at 11:58:18AM +0200, Marcin Ślusarz wrote: On Thu, Jul 16, 2015 at 02:01:56PM -0700, David Rientjes wrote: On Wed, 15 Jul 2015, Paul E. McKenney wrote: On Tue, Jul 14, 2015 at 04:48:24PM -0700, David Rientjes wrote: On Tue, 14 Jul 2015, Paul E. McKenney wrote:

Re: cpu_hotplug vs oom_notify_list: possible circular locking dependency detected

2015-07-19 Thread Marcin Ślusarz
On Thu, Jul 16, 2015 at 02:01:56PM -0700, David Rientjes wrote: > On Wed, 15 Jul 2015, Paul E. McKenney wrote: > > > On Tue, Jul 14, 2015 at 04:48:24PM -0700, David Rientjes wrote: > > > On Tue, 14 Jul 2015, Paul E. McKenney wrote: > > > > > > > commit a1992f2f3b8e174d740a8f764d0d51344bed2eed >

Re: cpu_hotplug vs oom_notify_list: possible circular locking dependency detected

2015-07-19 Thread Marcin Ślusarz
On Thu, Jul 16, 2015 at 02:01:56PM -0700, David Rientjes wrote: On Wed, 15 Jul 2015, Paul E. McKenney wrote: On Tue, Jul 14, 2015 at 04:48:24PM -0700, David Rientjes wrote: On Tue, 14 Jul 2015, Paul E. McKenney wrote: commit a1992f2f3b8e174d740a8f764d0d51344bed2eed Author: Paul

Re: cpu_hotplug vs oom_notify_list: possible circular locking dependency detected

2015-07-16 Thread David Rientjes
On Wed, 15 Jul 2015, Paul E. McKenney wrote: > On Tue, Jul 14, 2015 at 04:48:24PM -0700, David Rientjes wrote: > > On Tue, 14 Jul 2015, Paul E. McKenney wrote: > > > > > commit a1992f2f3b8e174d740a8f764d0d51344bed2eed > > > Author: Paul E. McKenney > > > Date: Tue Jul 14 16:24:14 2015 -0700 >

Re: cpu_hotplug vs oom_notify_list: possible circular locking dependency detected

2015-07-16 Thread David Rientjes
On Wed, 15 Jul 2015, Paul E. McKenney wrote: On Tue, Jul 14, 2015 at 04:48:24PM -0700, David Rientjes wrote: On Tue, 14 Jul 2015, Paul E. McKenney wrote: commit a1992f2f3b8e174d740a8f764d0d51344bed2eed Author: Paul E. McKenney paul...@linux.vnet.ibm.com Date: Tue Jul 14 16:24:14

Re: cpu_hotplug vs oom_notify_list: possible circular locking dependency detected

2015-07-15 Thread Paul E. McKenney
On Tue, Jul 14, 2015 at 04:48:24PM -0700, David Rientjes wrote: > On Tue, 14 Jul 2015, Paul E. McKenney wrote: > > > commit a1992f2f3b8e174d740a8f764d0d51344bed2eed > > Author: Paul E. McKenney > > Date: Tue Jul 14 16:24:14 2015 -0700 > > > > rcu: Don't disable CPU hotplug during OOM

Re: cpu_hotplug vs oom_notify_list: possible circular locking dependency detected

2015-07-15 Thread Paul E. McKenney
On Tue, Jul 14, 2015 at 04:48:24PM -0700, David Rientjes wrote: On Tue, 14 Jul 2015, Paul E. McKenney wrote: commit a1992f2f3b8e174d740a8f764d0d51344bed2eed Author: Paul E. McKenney paul...@linux.vnet.ibm.com Date: Tue Jul 14 16:24:14 2015 -0700 rcu: Don't disable CPU hotplug

Re: cpu_hotplug vs oom_notify_list: possible circular locking dependency detected

2015-07-14 Thread David Rientjes
On Tue, 14 Jul 2015, Paul E. McKenney wrote: > commit a1992f2f3b8e174d740a8f764d0d51344bed2eed > Author: Paul E. McKenney > Date: Tue Jul 14 16:24:14 2015 -0700 > > rcu: Don't disable CPU hotplug during OOM notifiers > > RCU's rcu_oom_notify() disables CPU hotplug in order to

Re: cpu_hotplug vs oom_notify_list: possible circular locking dependency detected

2015-07-14 Thread Paul E. McKenney
On Tue, Jul 14, 2015 at 03:35:15PM -0700, David Rientjes wrote: > On Sun, 12 Jul 2015, Marcin Ślusarz wrote: > > > [28954.363492] == > > [28954.363492] [ INFO: possible circular locking dependency detected ] > > [28954.363494] 4.1.2 #56 Not

Re: cpu_hotplug vs oom_notify_list: possible circular locking dependency detected

2015-07-14 Thread David Rientjes
On Sun, 12 Jul 2015, Marcin Ślusarz wrote: > [28954.363492] == > [28954.363492] [ INFO: possible circular locking dependency detected ] > [28954.363494] 4.1.2 #56 Not tainted > [28954.363494]

Re: cpu_hotplug vs oom_notify_list: possible circular locking dependency detected

2015-07-14 Thread Paul E. McKenney
On Tue, Jul 14, 2015 at 03:35:15PM -0700, David Rientjes wrote: On Sun, 12 Jul 2015, Marcin Ślusarz wrote: [28954.363492] == [28954.363492] [ INFO: possible circular locking dependency detected ] [28954.363494] 4.1.2 #56 Not tainted

Re: cpu_hotplug vs oom_notify_list: possible circular locking dependency detected

2015-07-14 Thread David Rientjes
On Tue, 14 Jul 2015, Paul E. McKenney wrote: commit a1992f2f3b8e174d740a8f764d0d51344bed2eed Author: Paul E. McKenney paul...@linux.vnet.ibm.com Date: Tue Jul 14 16:24:14 2015 -0700 rcu: Don't disable CPU hotplug during OOM notifiers RCU's rcu_oom_notify() disables CPU

Re: cpu_hotplug vs oom_notify_list: possible circular locking dependency detected

2015-07-14 Thread David Rientjes
On Sun, 12 Jul 2015, Marcin Ślusarz wrote: [28954.363492] == [28954.363492] [ INFO: possible circular locking dependency detected ] [28954.363494] 4.1.2 #56 Not tainted [28954.363494] ---

cpu_hotplug vs oom_notify_list: possible circular locking dependency detected

2015-07-12 Thread Marcin Ślusarz
[28954.363492] == [28954.363492] [ INFO: possible circular locking dependency detected ] [28954.363494] 4.1.2 #56 Not tainted [28954.363494] --- [28954.363495] pm-suspend/16647 is trying to

cpu_hotplug vs oom_notify_list: possible circular locking dependency detected

2015-07-12 Thread Marcin Ślusarz
[28954.363492] == [28954.363492] [ INFO: possible circular locking dependency detected ] [28954.363494] 4.1.2 #56 Not tainted [28954.363494] --- [28954.363495] pm-suspend/16647 is trying to