Re: console: lockup on boot

2014-07-08 Thread Peter Zijlstra
On Thu, Jun 12, 2014 at 10:54:22AM +0200, Mike Galbraith wrote: > On Thu, 2014-06-12 at 10:26 +0200, Jan Kara wrote: > > On Wed 11-06-14 23:07:04, Sasha Levin wrote: > > > > The first patch fixed it (I assumed that there's no need to try the > > > second). > > Good. So that shows that it is th

Re: console: lockup on boot

2014-06-19 Thread Jan Kara
On Wed 11-06-14 23:07:04, Sasha Levin wrote: > On 06/11/2014 05:31 PM, Jan Kara wrote: > > On Wed 11-06-14 22:34:36, Jan Kara wrote: > >> > On Wed 11-06-14 10:55:55, Sasha Levin wrote: > >>> > > On 06/10/2014 11:59 AM, Peter Hurley wrote: > > > > On 06/06/2014 03:05 PM, Sasha Levin wrote: > >>

Re: console: lockup on boot

2014-06-12 Thread Mike Galbraith
On Thu, 2014-06-12 at 10:26 +0200, Jan Kara wrote: > On Wed 11-06-14 23:07:04, Sasha Levin wrote: > > The first patch fixed it (I assumed that there's no need to try the second). > Good. So that shows that it is the increased lockdep coverage which is > causing problems - with my patch, lockdep

Re: console: lockup on boot

2014-06-12 Thread Jan Kara
On Wed 11-06-14 23:07:04, Sasha Levin wrote: > On 06/11/2014 05:31 PM, Jan Kara wrote: > > On Wed 11-06-14 22:34:36, Jan Kara wrote: > >> > On Wed 11-06-14 10:55:55, Sasha Levin wrote: > >>> > > On 06/10/2014 11:59 AM, Peter Hurley wrote: > > > > On 06/06/2014 03:05 PM, Sasha Levin wrote: > >>

Re: console: lockup on boot

2014-06-11 Thread Sasha Levin
On 06/11/2014 05:31 PM, Jan Kara wrote: > On Wed 11-06-14 22:34:36, Jan Kara wrote: >> > On Wed 11-06-14 10:55:55, Sasha Levin wrote: >>> > > On 06/10/2014 11:59 AM, Peter Hurley wrote: > > > On 06/06/2014 03:05 PM, Sasha Levin wrote: > > > >> On 05/30/2014 10:07 AM, Jan Kara wrote: >>

Re: console: lockup on boot

2014-06-11 Thread Jan Kara
On Wed 11-06-14 22:34:36, Jan Kara wrote: > On Wed 11-06-14 10:55:55, Sasha Levin wrote: > > On 06/10/2014 11:59 AM, Peter Hurley wrote: > > > On 06/06/2014 03:05 PM, Sasha Levin wrote: > > >> On 05/30/2014 10:07 AM, Jan Kara wrote: > > >>> On Fri 30-05-14 09:58:14, Peter Hurley wrote: > > > On

Re: console: lockup on boot

2014-06-11 Thread Jan Kara
On Wed 11-06-14 10:55:55, Sasha Levin wrote: > On 06/10/2014 11:59 AM, Peter Hurley wrote: > > On 06/06/2014 03:05 PM, Sasha Levin wrote: > >> On 05/30/2014 10:07 AM, Jan Kara wrote: > >>> On Fri 30-05-14 09:58:14, Peter Hurley wrote: > > On 05/30/2014 09:11 AM, Sasha Levin wrote: > >>> Hi

Re: console: lockup on boot

2014-06-11 Thread Jan Kara
On Wed 11-06-14 11:34:28, Peter Hurley wrote: > On 06/11/2014 10:55 AM, Sasha Levin wrote: > >On 06/10/2014 11:59 AM, Peter Hurley wrote: > >>On 06/06/2014 03:05 PM, Sasha Levin wrote: > >>>On 05/30/2014 10:07 AM, Jan Kara wrote: > On Fri 30-05-14 09:58:14, Peter Hurley wrote: > >>On 05/30/

Re: console: lockup on boot

2014-06-11 Thread Linus Torvalds
On Wed, Jun 11, 2014 at 10:38 AM, Linus Torvalds wrote: > > Ok, I'm going to revert that commit. The games it plays with cpu > numbers and preemption make me worried, and it looks silly. > > If the only reason for that patch is interrupt latency, then if the > "preempt_disable()" had been done *b

Re: console: lockup on boot

2014-06-11 Thread Linus Torvalds
On Wed, Jun 11, 2014 at 7:55 AM, Sasha Levin wrote: > > I've ran a bisection again and ended up at the same commit as Jet Chen (the > commit > unfortunately already made it to Linus's tree). Ok, I'm going to revert that commit. The games it plays with cpu numbers and preemption make me worried,

Re: console: lockup on boot

2014-06-11 Thread Peter Hurley
On 06/11/2014 10:55 AM, Sasha Levin wrote: On 06/10/2014 11:59 AM, Peter Hurley wrote: On 06/06/2014 03:05 PM, Sasha Levin wrote: On 05/30/2014 10:07 AM, Jan Kara wrote: On Fri 30-05-14 09:58:14, Peter Hurley wrote: On 05/30/2014 09:11 AM, Sasha Levin wrote: Hi all, I sometime see lockups w

Re: console: lockup on boot

2014-06-11 Thread Sasha Levin
On 06/10/2014 11:59 AM, Peter Hurley wrote: > On 06/06/2014 03:05 PM, Sasha Levin wrote: >> On 05/30/2014 10:07 AM, Jan Kara wrote: >>> On Fri 30-05-14 09:58:14, Peter Hurley wrote: > On 05/30/2014 09:11 AM, Sasha Levin wrote: >>> Hi all, >>> >>> I sometime see lockups when booting

Re: console: lockup on boot

2014-06-10 Thread Peter Hurley
On 06/06/2014 03:05 PM, Sasha Levin wrote: On 05/30/2014 10:07 AM, Jan Kara wrote: On Fri 30-05-14 09:58:14, Peter Hurley wrote: On 05/30/2014 09:11 AM, Sasha Levin wrote: Hi all, I sometime see lockups when booting my KVM guest with the latest -next kernel, it basically hangs right when it s

Re: console: lockup on boot

2014-06-06 Thread Sasha Levin
On 05/30/2014 10:07 AM, Jan Kara wrote: > On Fri 30-05-14 09:58:14, Peter Hurley wrote: >> > On 05/30/2014 09:11 AM, Sasha Levin wrote: >>> > >Hi all, >>> > > >>> > >I sometime see lockups when booting my KVM guest with the latest -next >>> > >kernel, >>> > >it basically hangs right when it should

Re: console: lockup on boot

2014-05-30 Thread Jan Kara
On Fri 30-05-14 09:58:14, Peter Hurley wrote: > On 05/30/2014 09:11 AM, Sasha Levin wrote: > >Hi all, > > > >I sometime see lockups when booting my KVM guest with the latest -next > >kernel, > >it basically hangs right when it should start 'init', and after a while I get > >the following spew: > >

Re: console: lockup on boot

2014-05-30 Thread Peter Hurley
On 05/30/2014 09:11 AM, Sasha Levin wrote: Hi all, I sometime see lockups when booting my KVM guest with the latest -next kernel, it basically hangs right when it should start 'init', and after a while I get the following spew: [ 30.790833] BUG: spinlock lockup suspected on CPU#1, swapper/1/0

console: lockup on boot

2014-05-30 Thread Sasha Levin
Hi all, I sometime see lockups when booting my KVM guest with the latest -next kernel, it basically hangs right when it should start 'init', and after a while I get the following spew: [ 30.790833] BUG: spinlock lockup suspected on CPU#1, swapper/1/0 [ 30.770667] BUG: spinlock lockup suspecte