Re: BUG: scheduling while atomic: swapper/0/0x00000002

2010-06-28 Thread Benjamin Herrenschmidt
On Mon, 2010-06-28 at 09:49 -0700, Paul E. McKenney wrote: > And it does appear to be reproducible perhaps 50% of boots running > CONFIG_PREEMPT on kernel-ml8. I have not yet seen it on any other > system. > Do you have a patch to instrument the interrupts so as to get the info > you need, or shou

Re: BUG: scheduling while atomic: swapper/0/0x00000002

2010-06-28 Thread Paul E. McKenney
On Wed, Jun 09, 2010 at 06:08:54PM -0700, Paul E. McKenney wrote: > On Thu, Jun 10, 2010 at 09:20:08AM +1000, Benjamin Herrenschmidt wrote: > > On Wed, 2010-06-09 at 14:52 -0700, Paul E. McKenney wrote: > > > Hello! > > > > > > I get the following during boot on a 16 CPU Power box. Thoughts? > >

Re: BUG: scheduling while atomic: swapper/0/0x00000002

2010-06-09 Thread Paul E. McKenney
liable) > > [c0008e1afcd0] [c005cb60] .__schedule_bug+0xac/0xd0 > > [c0008e1afd70] [c05f0c34] .schedule+0xc0/0x894 > > [c0008e1afe40] [c00142d0] .cpu_idle+0x1f8/0x20c > > [c0008e1afed0] [c00000600b08] .start_secondary+0x3bc/0x3fc > > [c

Re: BUG: scheduling while atomic: swapper/0/0x00000002

2010-06-09 Thread Benjamin Herrenschmidt
ily 1 > RPC: Registered udp transport module. > RPC: Registered tcp transport module. > RPC: Registered tcp NFSv4.1 backchannel transport module. > Trying to unpack rootfs image as initramfs... > Freeing initrd memory: 2455k freed > BUG: scheduling while atomic: swapper/0/0x0002 >

BUG: scheduling while atomic: swapper/0/0x00000002

2010-06-09 Thread Paul E. McKenney
protocol family 1 RPC: Registered udp transport module. RPC: Registered tcp transport module. RPC: Registered tcp NFSv4.1 backchannel transport module. Trying to unpack rootfs image as initramfs... Freeing initrd memory: 2455k freed BUG: scheduling while atomic: swapper/0/0x0002 no locks held by