Re: [Xen-devel] Issue with 2.6.37 DomU kernel

[Ian Campbell <Ian.Campbell@xxxxxxxxxxxxx>]

On Fri, 2011-02-04 at 19:54 +0000, Anirban Sinha wrote:
> >The patch below works for me in so much as it
> > doesn't make anything worse, but I wasn't seeing the issue to start
> > with. Does it work for you?
> 
> yes, it does , thanks.

Unfortunately testing a bit further against origin/master I get:

[  262.720078] BUG: sleeping function called from invalid context at 
/local/scratch/ianc/devel/kernels/linux-2.6/kernel/mutex.c:278
[  262.720078] in_atomic(): 0, irqs_disabled(): 1, pid: 6, name: migration/0
[  262.720078] INFO: lockdep is turned off.
[  262.720078] irq event stamp: 12
[  262.720078] hardirqs last  enabled at (11): [<c12f7d02>] 
_raw_spin_unlock_irq+0x22/0x40
[  262.720078] hardirqs last disabled at (12): [<c12f769d>] 
_raw_spin_lock_irq+0x1d/0x60
[  262.720078] softirqs last  enabled at (0): [<c103c2c6>] 
copy_process+0x266/0xf80
[  262.720078] softirqs last disabled at (0): [<  (null)>]   (null)
[  262.720078] Pid: 6, comm: migration/0 Tainted: G        W   
2.6.38-rc3-x86_32p-xenU-00239-g7cb27bf #412
[  262.720078] Call Trace:
[  262.720078]  [<c1035b5c>] ? __might_sleep+0x11c/0x130
[  262.720078]  [<c12f64ee>] ? mutex_lock_nested+0x1e/0x380
[  262.720078]  [<c107bb21>] ? synchronize_irq+0x31/0xa0
[  262.720078]  [<c107afcc>] ? disable_irq_nosync+0x4c/0x70
[  262.720078]  [<c118d806>] ? rebind_evtchn_irq+0x26/0xc0
[  262.720078]  [<c11af1dd>] ? xen_console_resume+0x1d/0x40
[  262.720078]  [<c118ebfa>] ? xen_suspend+0xaa/0x100
[  262.720078]  [<c10070e4>] ? check_events+0x8/0xc
[  262.720078]  [<c1079efa>] ? stop_machine_cpu_stop+0x9a/0xf0
[  262.720078]  [<c1079d8e>] ? cpu_stopper_thread+0x8e/0x160
[  262.720078]  [<c12f4dc1>] ? schedule+0x301/0x820
[  262.720078]  [<c1079e60>] ? stop_machine_cpu_stop+0x0/0xf0
[  262.720078]  [<c10068da>] ? xen_force_evtchn_callback+0x1a/0x30
[  262.720078]  [<c10070c0>] ? xen_restore_fl_direct+0x0/0x17
[  262.720078]  [<c10068da>] ? xen_force_evtchn_callback+0x1a/0x30
[  262.720078]  [<c10070e4>] ? check_events+0x8/0xc
[  262.720078]  [<c10070db>] ? xen_restore_fl_direct_end+0x0/0x1
[  262.720078]  [<c12f7d7e>] ? _raw_spin_unlock_irqrestore+0x5e/0x70
[  262.720078]  [<c1030299>] ? complete+0x49/0x60
[  262.720078]  [<c1079d00>] ? cpu_stopper_thread+0x0/0x160
[  262.720078]  [<c10577e4>] ? kthread+0x74/0x80
[  262.720078]  [<c1057770>] ? kthread+0x0/0x80
[  262.720078]  [<c100aafa>] ? kernel_thread_helper+0x6/0x10

so back to the drawing board...

>  Although the domain boot process just hangs
> half way through. It could be a different issue. Need to investigate.

OK.


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