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Re: Summary: Experiences setting up a debug serial port (was Re: [Xen-us

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: Summary: Experiences setting up a debug serial port (was Re: [Xen-users] 3.1.0-rc0 git snapshot crashes as dom0 (private mail))
From: jim burns <jim_burn@xxxxxxxxxxxxx>
Date: Tue, 30 Aug 2011 17:17 -0400
Cc: Pasi Kärkkäinen <pasik@xxxxxx>
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On Tue August 23 2011, 5:12:52 PM, jim burns wrote:
> On Tue August 16 2011, 7:46:33 PM, jim burns wrote:
> > On Mon August 15 2011, 4:04:20 AM, jim burns wrote:
> >> Pls cc me with responses, as I'm not subscribed.
> > 
> > Yay! After a string of fedora rawhide 3.1.0-rc0 and -rc1's that did not
> > boot  under xen, 3.1.0-0.rc2.git0.1.fc17.x86_64 boots under xen, it has
> > the vga patch, and xen-pciback correctly siezes my wireless device.
> > Unfortunately, while a baremetal boot is clean, a xen boot has several
> 
> > BUG:'s of the form:
> Rawhide is up to 3.1.0-0.rc3.git0.0.fc17.x86_64 , and it still has the same
> BUGS: of the form:
> 
> BUG: scheduling while atomic: modprobe/493/0x10000002
> 
> BUG: sleeping function called from invalid context at kernel/mutex.c:271
> 
> BUG: scheduling while atomic: xenstored/3184/0x10000002
> 
> both while booting up under xen, and when starting and stopping a(n hvm)
> guest.

Rawhide is up to 3.1.0-0.rc4.git0.0.fc17 , and still the same bugs, plus the 
new one 'spinlock wrong CPU':

Aug 30 17:07:13 Insp6400 kernel: [    9.657492] BUG: sleeping function called 
from invalid context at kernel/mutex.c:271
Aug 30 17:07:13 Insp6400 kernel: [    9.657553] in_atomic(): 1, 
irqs_disabled(): 0, pid: 254, name: modprobe
--
Aug 30 17:07:13 Insp6400 kernel: [    9.714251] BUG: scheduling while atomic: 
modprobe/254/0x10000002
Aug 30 17:07:13 Insp6400 kernel: [    9.715224] 3 locks held by modprobe/254:
--
Aug 30 17:07:13 Insp6400 kernel: [   52.675476] BUG: sleeping function called 
from invalid context at kernel/mutex.c:271
Aug 30 17:07:13 Insp6400 kernel: [   52.676191] in_atomic(): 1, 
irqs_disabled(): 0, pid: 511, name: modprobe
--
Aug 30 17:07:13 Insp6400 kernel: [   52.682754] BUG: scheduling while atomic: 
modprobe/511/0x10000002
Aug 30 17:07:13 Insp6400 kernel: [   52.682754] 3 locks held by modprobe/511:
--
Aug 30 17:07:13 Insp6400 kernel: [   52.867221] BUG: spinlock wrong CPU on 
CPU#1, modprobe/511
Aug 30 17:07:13 Insp6400 kernel: [   52.868082]  lock: ffffffff81a7de60, 
.magic: dead4ead, .owner: modprobe/511, .owner_cpu: 0
--
Aug 30 17:07:13 Insp6400 kernel: [   55.038559] BUG: sleeping function called 
from invalid context at kernel/mutex.c:271
Aug 30 17:07:13 Insp6400 kernel: [   55.039487] in_atomic(): 1, 
irqs_disabled(): 0, pid: 508, name: modprobe
--
Aug 30 17:07:13 Insp6400 kernel: [   55.039487] BUG: scheduling while atomic: 
modprobe/508/0x10000002
Aug 30 17:07:13 Insp6400 kernel: [   55.039487] INFO: lockdep is turned off.
--
Aug 30 17:07:13 Insp6400 kernel: [   55.153964] BUG: scheduling while atomic: 
modprobe/508/0x10000002
Aug 30 17:07:13 Insp6400 kernel: [   55.154664] INFO: lockdep is turned off.
--
Aug 30 17:08:04 Insp6400 kernel: [  117.158477] BUG: sleeping function called 
from invalid context at kernel/mutex.c:271
Aug 30 17:08:04 Insp6400 kernel: [  117.159068] in_atomic(): 1, 
irqs_disabled(): 0, pid: 3204, name: xenstored


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