Re: latest pv_ops dom0 (2.6.29-rc6) crashes / unhandled page fault

[Jeremy Fitzhardinge <jeremy@goop.org>]

Pasi Kärkkäinen wrote:
> On Tue, Mar 03, 2009 at 07:41:49PM +0200, Pasi Kärkkäinen wrote:
>   
>>>>  
>>>>         
>>> Yeah, something got broken.  Tracking it down now.
>>>
>>>       
>>>> Any ideas what's going on? 
>>>>
>>>> (XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch input 
>>>> to Xen)
>>>> (XEN) Freed 112kB init memory.
>>>> mapping kernel into physical memory
>>>> (XEN) d0:v0: unhandled page fault (ec=0000)
>>>> (XEN) Pagetable walk from bffff000:
>>>> (XEN)  L3[0x002] = 000000003d204001 00001204
>>>> (XEN)  L2[0x1ff] = 0000000000000000 ffffffff 
>>>> (XEN) domain_crash_sync called from entry.S (ff1a2c9e)
>>>> (XEN) Domain 0 (vcpu#0) crashed on cpu#0:
>>>> (XEN) ----[ Xen-3.3.1  x86_32p  debug=n  Not tainted ]----
>>>> (XEN) CPU:    0
>>>> (XEN) EIP:    e019:[<c0879716>]
>>>>  
>>>>         
>>> What does this map to in your vmlinux?
>>>
>>>       
>
> Just upgraded to latest tree (as of some hours ago), and I still get the
> same crash:
>
> http://pasik.reaktio.net/xen/pv_ops-dom0-debug/pv_ops-dom0-bootlog-16-xen331-linux-2.6.29-rc6-crash.txt
>
> (XEN) Freed 112kB init memory.
> mapping kernel into physical memory
> (XEN) d0:v0: unhandled page fault (ec=0000)
> (XEN) Pagetable walk from bffff000:
> (XEN)  L3[0x002] = 000000003d204001 00001204
> (XEN)  L2[0x1ff] = 0000000000000000 ffffffff 
> (XEN) domain_crash_sync called from entry.S (ff1a2c9e)
> (XEN) Domain 0 (vcpu#0) crashed on cpu#0:
> (XEN) ----[ Xen-3.3.1  x86_32p  debug=n  Not tainted ]----
> (XEN) CPU:    0
> (XEN) EIP:    e019:[<c0877902>]
>
>
> [root@dom0test linux-2.6-xen]# gdb vmlinux
> GNU gdb Fedora (6.8-29.fc10)
> Copyright (C) 2008 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later
> <http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
> and "show warranty" for details.
> This GDB was configured as "i386-redhat-linux-gnu"...
> (gdb) x/i 0xc0877902
> 0xc0877902 <xen_map_identity_early+157>:        mov    (%edi,%ebx,8),%edx
>   

Yep, working on it at the moment.

    J