Re: [Xen-devel] domU crashing, trying to determine why

[micah anderson <micah@xxxxxxxxxx>]

On Sat, 1 Jan 2011 23:41:06 +0200, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
> On Sat, Jan 01, 2011 at 02:16:55PM -0500, Micah Anderson wrote:
> > 
> > I'm having a domU that is regularly crashing, without any obvious reason
> > why. I set 'on_crash=preserve' to try and get a crash to try and get
> > some clues, but what I got doesn't too obvious to me. I was hoping
> > someone here would be able to give me some clues. 
> > 
> > Thanks for any clues anyone can give! Here is what I managed to eke out:
> > 
> > root@guillemot:/etc/xen# /usr/lib/xen-3.2-1/bin/xenctx -s 
> > /boot/System.map-2.6.26-2-xen-686 11 0
> 
> So the domU has only 1 vcpu? 

No, I did this for both vcpus, the second one is below:

> > root@guillemot:/etc/xen# /usr/lib/xen-3.2-1/bin/xenctx -s 
> > /boot/System.map-2.6.26-2-xen-686 11 1
> > eip: c0170f39 file_kill+0x27 flags: 00001202 i nz
> > esp: e74cbf2c
> > eax: ec825e98       ebx: d7033a80   ecx: ee07207f   edx: e7672e80
> > esi: d7033a80       edi: ed3942c0   ebp: ed396be8
> >  cs: 00000061        ds: 0000007b    fs: 000000d8    gs: 00000000
> > 
> > Stack:
> >  00000010 c01710ae ed420f00 e81b3a78 e82d5cfc e7218b00 e74ca000 c016080d
> >  c123f020 e81b3a78 c01608e7 000001e8 c123f020 e7218b00 e7218b4c 00000000
> >  c011c723 00000000 e59bba80 c01214aa 00000001 e7447a80 e7688580 00000000
> >  e76885c0 00000000 ed4ebd00 00000000 e74ca000 c0121998 00000000 00000000
> > 
> > Code:
> > 13 8b 43 04 89 42 04 89 10 89 5b 04 89 1b f0 fe 05 40 42 38 c0 <0f> b7 15 
> > 40 42 38 c0 38 f2 0f 95 
> > 
> > Call Trace:
> >   [<c0170f39>] file_kill+0x27  <--
> >   [<c01710ae>] __fput+0xd2 
> >   [<c016080d>] remove_vma+0x25 
> >   [<c01608e7>] exit_mmap+0xbc 
> >   [<c011c723>] mmput+0x24 
> >   [<c01214aa>] do_exit+0x1ad 
> >   [<c0121998>] do_group_exit+0x94 
> >   [<c01219ce>] sys_exit_group+0xd 
> >   [<c0103f76>] syscall_call+0x7 
> >   [<c02c0000>] zone_wait_table_init+0x47

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