Re: percpu: kernel BUG at mm/percpu.c:579!

2013-08-05 Thread Sasha Levin
On 08/05/2013 03:15 PM, Kent Overstreet wrote: From percpu_ref release path. Kent? From the backtrace I have no idea if this was from the aio code using it or the cgroup code - Sasha, any idea? AIO is probably more likely, I'm going to look to see if I can find anything... I honestly

Re: percpu: kernel BUG at mm/percpu.c:579!

2013-08-05 Thread Kent Overstreet
On Mon, Aug 05, 2013 at 10:57:36AM -0400, Tejun Heo wrote: > (cc'ing Kent, hi!) > > On Mon, Aug 05, 2013 at 10:49:33AM -0400, Sasha Levin wrote: > > Hi all, > > > > While fuzzing with trinity inside a KVM tools guest running latest -next > > kernel, > > I've stumbled on the following spew: > >

Re: percpu: kernel BUG at mm/percpu.c:579!

2013-08-05 Thread Tejun Heo
(cc'ing Kent, hi!) On Mon, Aug 05, 2013 at 10:49:33AM -0400, Sasha Levin wrote: > Hi all, > > While fuzzing with trinity inside a KVM tools guest running latest -next > kernel, > I've stumbled on the following spew: > > [ 274.820724] [ cut here ] > [ 274.821320]

percpu: kernel BUG at mm/percpu.c:579!

2013-08-05 Thread Sasha Levin
Hi all, While fuzzing with trinity inside a KVM tools guest running latest -next kernel, I've stumbled on the following spew: [ 274.820724] [ cut here ] [ 274.821320] kernel BUG at mm/percpu.c:579! [ 274.821848] invalid opcode: [#1] PREEMPT SMP DEBUG_PAGEALLOC [

percpu: kernel BUG at mm/percpu.c:579!

2013-08-05 Thread Sasha Levin
Hi all, While fuzzing with trinity inside a KVM tools guest running latest -next kernel, I've stumbled on the following spew: [ 274.820724] [ cut here ] [ 274.821320] kernel BUG at mm/percpu.c:579! [ 274.821848] invalid opcode: [#1] PREEMPT SMP DEBUG_PAGEALLOC [

Re: percpu: kernel BUG at mm/percpu.c:579!

2013-08-05 Thread Tejun Heo
(cc'ing Kent, hi!) On Mon, Aug 05, 2013 at 10:49:33AM -0400, Sasha Levin wrote: Hi all, While fuzzing with trinity inside a KVM tools guest running latest -next kernel, I've stumbled on the following spew: [ 274.820724] [ cut here ] [ 274.821320] kernel BUG at

Re: percpu: kernel BUG at mm/percpu.c:579!

2013-08-05 Thread Kent Overstreet
On Mon, Aug 05, 2013 at 10:57:36AM -0400, Tejun Heo wrote: (cc'ing Kent, hi!) On Mon, Aug 05, 2013 at 10:49:33AM -0400, Sasha Levin wrote: Hi all, While fuzzing with trinity inside a KVM tools guest running latest -next kernel, I've stumbled on the following spew: [

Re: percpu: kernel BUG at mm/percpu.c:579!

2013-08-05 Thread Sasha Levin
On 08/05/2013 03:15 PM, Kent Overstreet wrote: From percpu_ref release path. Kent? From the backtrace I have no idea if this was from the aio code using it or the cgroup code - Sasha, any idea? AIO is probably more likely, I'm going to look to see if I can find anything... I honestly