Re: next: Commit 'mm: Prevent __alloc_pages_nodemask() RCU CPU stall ...' causing hang on sparc32 qemu

2016-12-01 Thread Guenter Roeck
On 12/01/2016 04:34 AM, Paul E. McKenney wrote: On Wed, Nov 30, 2016 at 10:56:57PM -0800, Guenter Roeck wrote: Hi Paul, On Wed, Nov 30, 2016 at 05:19:50PM -0800, Paul E. McKenney wrote: [ ... ] BUG: sleeping function called from invalid context at mm/page_alloc.c:3775 [ ... ] Whew! You

Re: next: Commit 'mm: Prevent __alloc_pages_nodemask() RCU CPU stall ...' causing hang on sparc32 qemu

2016-12-01 Thread Guenter Roeck
On 12/01/2016 04:34 AM, Paul E. McKenney wrote: On Wed, Nov 30, 2016 at 10:56:57PM -0800, Guenter Roeck wrote: Hi Paul, On Wed, Nov 30, 2016 at 05:19:50PM -0800, Paul E. McKenney wrote: [ ... ] BUG: sleeping function called from invalid context at mm/page_alloc.c:3775 [ ... ] Whew! You

Re: next: Commit 'mm: Prevent __alloc_pages_nodemask() RCU CPU stall ...' causing hang on sparc32 qemu

2016-12-01 Thread Paul E. McKenney
On Wed, Nov 30, 2016 at 10:56:57PM -0800, Guenter Roeck wrote: > Hi Paul, > > On Wed, Nov 30, 2016 at 05:19:50PM -0800, Paul E. McKenney wrote: > [ ... ] > > > > > > > > > > > BUG: sleeping function called from invalid context at > > > > > mm/page_alloc.c:3775 > [ ... ] > > > > Whew! You had

Re: next: Commit 'mm: Prevent __alloc_pages_nodemask() RCU CPU stall ...' causing hang on sparc32 qemu

2016-12-01 Thread Paul E. McKenney
On Wed, Nov 30, 2016 at 10:56:57PM -0800, Guenter Roeck wrote: > Hi Paul, > > On Wed, Nov 30, 2016 at 05:19:50PM -0800, Paul E. McKenney wrote: > [ ... ] > > > > > > > > > > > BUG: sleeping function called from invalid context at > > > > > mm/page_alloc.c:3775 > [ ... ] > > > > Whew! You had

Re: next: Commit 'mm: Prevent __alloc_pages_nodemask() RCU CPU stall ...' causing hang on sparc32 qemu

2016-11-30 Thread Guenter Roeck
Hi Paul, On Wed, Nov 30, 2016 at 05:19:50PM -0800, Paul E. McKenney wrote: [ ... ] > > > > > > > > BUG: sleeping function called from invalid context at > > > > mm/page_alloc.c:3775 [ ... ] > > Whew! You had me going for a bit there. ;-) Bisect results are here ... the culprit is, again,

Re: next: Commit 'mm: Prevent __alloc_pages_nodemask() RCU CPU stall ...' causing hang on sparc32 qemu

2016-11-30 Thread Guenter Roeck
Hi Paul, On Wed, Nov 30, 2016 at 05:19:50PM -0800, Paul E. McKenney wrote: [ ... ] > > > > > > > > BUG: sleeping function called from invalid context at > > > > mm/page_alloc.c:3775 [ ... ] > > Whew! You had me going for a bit there. ;-) Bisect results are here ... the culprit is, again,

Re: next: Commit 'mm: Prevent __alloc_pages_nodemask() RCU CPU stall ...' causing hang on sparc32 qemu

2016-11-30 Thread Paul E. McKenney
On Wed, Nov 30, 2016 at 03:18:46PM -0800, Guenter Roeck wrote: > On Wed, Nov 30, 2016 at 01:01:52PM -0800, Paul E. McKenney wrote: > > On Wed, Nov 30, 2016 at 11:21:59AM -0800, Guenter Roeck wrote: > > > On Wed, Nov 30, 2016 at 04:03:33AM -0800, Paul E. McKenney wrote: > > > > On Wed, Nov 30, 2016

Re: next: Commit 'mm: Prevent __alloc_pages_nodemask() RCU CPU stall ...' causing hang on sparc32 qemu

2016-11-30 Thread Paul E. McKenney
On Wed, Nov 30, 2016 at 03:18:46PM -0800, Guenter Roeck wrote: > On Wed, Nov 30, 2016 at 01:01:52PM -0800, Paul E. McKenney wrote: > > On Wed, Nov 30, 2016 at 11:21:59AM -0800, Guenter Roeck wrote: > > > On Wed, Nov 30, 2016 at 04:03:33AM -0800, Paul E. McKenney wrote: > > > > On Wed, Nov 30, 2016

Re: next: Commit 'mm: Prevent __alloc_pages_nodemask() RCU CPU stall ...' causing hang on sparc32 qemu

2016-11-30 Thread Guenter Roeck
On Wed, Nov 30, 2016 at 01:01:52PM -0800, Paul E. McKenney wrote: > On Wed, Nov 30, 2016 at 11:21:59AM -0800, Guenter Roeck wrote: > > On Wed, Nov 30, 2016 at 04:03:33AM -0800, Paul E. McKenney wrote: > > > On Wed, Nov 30, 2016 at 02:52:11AM -0800, Guenter Roeck wrote: > > > > On 11/29/2016 11:02

Re: next: Commit 'mm: Prevent __alloc_pages_nodemask() RCU CPU stall ...' causing hang on sparc32 qemu

2016-11-30 Thread Guenter Roeck
On Wed, Nov 30, 2016 at 01:01:52PM -0800, Paul E. McKenney wrote: > On Wed, Nov 30, 2016 at 11:21:59AM -0800, Guenter Roeck wrote: > > On Wed, Nov 30, 2016 at 04:03:33AM -0800, Paul E. McKenney wrote: > > > On Wed, Nov 30, 2016 at 02:52:11AM -0800, Guenter Roeck wrote: > > > > On 11/29/2016 11:02

Re: next: Commit 'mm: Prevent __alloc_pages_nodemask() RCU CPU stall ...' causing hang on sparc32 qemu

2016-11-30 Thread Paul E. McKenney
On Wed, Nov 30, 2016 at 11:21:59AM -0800, Guenter Roeck wrote: > On Wed, Nov 30, 2016 at 04:03:33AM -0800, Paul E. McKenney wrote: > > On Wed, Nov 30, 2016 at 02:52:11AM -0800, Guenter Roeck wrote: > > > On 11/29/2016 11:02 PM, Paul E. McKenney wrote: > > > >On Tue, Nov 29, 2016 at 08:32:51PM

Re: next: Commit 'mm: Prevent __alloc_pages_nodemask() RCU CPU stall ...' causing hang on sparc32 qemu

2016-11-30 Thread Paul E. McKenney
On Wed, Nov 30, 2016 at 11:21:59AM -0800, Guenter Roeck wrote: > On Wed, Nov 30, 2016 at 04:03:33AM -0800, Paul E. McKenney wrote: > > On Wed, Nov 30, 2016 at 02:52:11AM -0800, Guenter Roeck wrote: > > > On 11/29/2016 11:02 PM, Paul E. McKenney wrote: > > > >On Tue, Nov 29, 2016 at 08:32:51PM

Re: next: Commit 'mm: Prevent __alloc_pages_nodemask() RCU CPU stall ...' causing hang on sparc32 qemu

2016-11-30 Thread Guenter Roeck
On Wed, Nov 30, 2016 at 04:03:33AM -0800, Paul E. McKenney wrote: > On Wed, Nov 30, 2016 at 02:52:11AM -0800, Guenter Roeck wrote: > > On 11/29/2016 11:02 PM, Paul E. McKenney wrote: > > >On Tue, Nov 29, 2016 at 08:32:51PM -0800, Guenter Roeck wrote: > > >>On 11/29/2016 05:28 PM, Paul E. McKenney

Re: next: Commit 'mm: Prevent __alloc_pages_nodemask() RCU CPU stall ...' causing hang on sparc32 qemu

2016-11-30 Thread Guenter Roeck
On Wed, Nov 30, 2016 at 04:03:33AM -0800, Paul E. McKenney wrote: > On Wed, Nov 30, 2016 at 02:52:11AM -0800, Guenter Roeck wrote: > > On 11/29/2016 11:02 PM, Paul E. McKenney wrote: > > >On Tue, Nov 29, 2016 at 08:32:51PM -0800, Guenter Roeck wrote: > > >>On 11/29/2016 05:28 PM, Paul E. McKenney

Re: next: Commit 'mm: Prevent __alloc_pages_nodemask() RCU CPU stall ...' causing hang on sparc32 qemu

2016-11-30 Thread Paul E. McKenney
On Wed, Nov 30, 2016 at 02:52:11AM -0800, Guenter Roeck wrote: > On 11/29/2016 11:02 PM, Paul E. McKenney wrote: > >On Tue, Nov 29, 2016 at 08:32:51PM -0800, Guenter Roeck wrote: > >>On 11/29/2016 05:28 PM, Paul E. McKenney wrote: > >>>On Tue, Nov 29, 2016 at 01:23:08PM -0800, Guenter Roeck wrote:

Re: next: Commit 'mm: Prevent __alloc_pages_nodemask() RCU CPU stall ...' causing hang on sparc32 qemu

2016-11-30 Thread Paul E. McKenney
On Wed, Nov 30, 2016 at 02:52:11AM -0800, Guenter Roeck wrote: > On 11/29/2016 11:02 PM, Paul E. McKenney wrote: > >On Tue, Nov 29, 2016 at 08:32:51PM -0800, Guenter Roeck wrote: > >>On 11/29/2016 05:28 PM, Paul E. McKenney wrote: > >>>On Tue, Nov 29, 2016 at 01:23:08PM -0800, Guenter Roeck wrote:

Re: next: Commit 'mm: Prevent __alloc_pages_nodemask() RCU CPU stall ...' causing hang on sparc32 qemu

2016-11-30 Thread Guenter Roeck
On 11/29/2016 11:02 PM, Paul E. McKenney wrote: On Tue, Nov 29, 2016 at 08:32:51PM -0800, Guenter Roeck wrote: On 11/29/2016 05:28 PM, Paul E. McKenney wrote: On Tue, Nov 29, 2016 at 01:23:08PM -0800, Guenter Roeck wrote: Hi Paul, most of my qemu tests for sparc32 targets started to fail in

Re: next: Commit 'mm: Prevent __alloc_pages_nodemask() RCU CPU stall ...' causing hang on sparc32 qemu

2016-11-30 Thread Guenter Roeck
On 11/29/2016 11:02 PM, Paul E. McKenney wrote: On Tue, Nov 29, 2016 at 08:32:51PM -0800, Guenter Roeck wrote: On 11/29/2016 05:28 PM, Paul E. McKenney wrote: On Tue, Nov 29, 2016 at 01:23:08PM -0800, Guenter Roeck wrote: Hi Paul, most of my qemu tests for sparc32 targets started to fail in

Re: next: Commit 'mm: Prevent __alloc_pages_nodemask() RCU CPU stall ...' causing hang on sparc32 qemu

2016-11-29 Thread Paul E. McKenney
On Tue, Nov 29, 2016 at 08:32:51PM -0800, Guenter Roeck wrote: > On 11/29/2016 05:28 PM, Paul E. McKenney wrote: > >On Tue, Nov 29, 2016 at 01:23:08PM -0800, Guenter Roeck wrote: > >>Hi Paul, > >> > >>most of my qemu tests for sparc32 targets started to fail in next-20161129. > >>The problem is

Re: next: Commit 'mm: Prevent __alloc_pages_nodemask() RCU CPU stall ...' causing hang on sparc32 qemu

2016-11-29 Thread Paul E. McKenney
On Tue, Nov 29, 2016 at 08:32:51PM -0800, Guenter Roeck wrote: > On 11/29/2016 05:28 PM, Paul E. McKenney wrote: > >On Tue, Nov 29, 2016 at 01:23:08PM -0800, Guenter Roeck wrote: > >>Hi Paul, > >> > >>most of my qemu tests for sparc32 targets started to fail in next-20161129. > >>The problem is

Re: next: Commit 'mm: Prevent __alloc_pages_nodemask() RCU CPU stall ...' causing hang on sparc32 qemu

2016-11-29 Thread Guenter Roeck
On 11/29/2016 05:28 PM, Paul E. McKenney wrote: On Tue, Nov 29, 2016 at 01:23:08PM -0800, Guenter Roeck wrote: Hi Paul, most of my qemu tests for sparc32 targets started to fail in next-20161129. The problem is only seen in SMP builds; non-SMP builds are fine. Bisect points to commit

Re: next: Commit 'mm: Prevent __alloc_pages_nodemask() RCU CPU stall ...' causing hang on sparc32 qemu

2016-11-29 Thread Guenter Roeck
On 11/29/2016 05:28 PM, Paul E. McKenney wrote: On Tue, Nov 29, 2016 at 01:23:08PM -0800, Guenter Roeck wrote: Hi Paul, most of my qemu tests for sparc32 targets started to fail in next-20161129. The problem is only seen in SMP builds; non-SMP builds are fine. Bisect points to commit

Re: next: Commit 'mm: Prevent __alloc_pages_nodemask() RCU CPU stall ...' causing hang on sparc32 qemu

2016-11-29 Thread Paul E. McKenney
On Tue, Nov 29, 2016 at 01:23:08PM -0800, Guenter Roeck wrote: > Hi Paul, > > most of my qemu tests for sparc32 targets started to fail in next-20161129. > The problem is only seen in SMP builds; non-SMP builds are fine. > Bisect points to commit 2d66cccd73436 ("mm: Prevent

Re: next: Commit 'mm: Prevent __alloc_pages_nodemask() RCU CPU stall ...' causing hang on sparc32 qemu

2016-11-29 Thread Paul E. McKenney
On Tue, Nov 29, 2016 at 01:23:08PM -0800, Guenter Roeck wrote: > Hi Paul, > > most of my qemu tests for sparc32 targets started to fail in next-20161129. > The problem is only seen in SMP builds; non-SMP builds are fine. > Bisect points to commit 2d66cccd73436 ("mm: Prevent