infrequent kernel crash just before reboot

infrequent kernel crash just before reboot

[Sander Eikelenboom]

[-- Attachment #1: Type: text/plain, Size: 2504 bytes --]

Hi All,

Once in a while when i try to reboot my machine the kernel crashes, because it's so infrequently i haven't been able to capture it via a serial log yet.
I have made 2 photographs from what's left on screen from the oops.
Machine is running :

serveerstertje:~# xm info
host                   : serveerstertje
release                : 2.6.32.15+xen-2.6.32.x-20100622-b
version                : #2 SMP Fri Jun 25 19:29:24 CEST 2010
machine                : x86_64
nr_cpus                : 6
nr_nodes               : 1
cores_per_socket       : 6
threads_per_core       : 1
cpu_mhz                : 3200
hw_caps                : 178bf3ff:efd3fbff:00000000:00001310:00802001:00000000:000037ff:00000000
virt_caps              : hvm
total_memory           : 8126
free_memory            : 3958
node_to_cpu            : node0:0-5
node_to_memory         : node0:3958
node_to_dma32_mem      : node0:2810
max_node_id            : 0
xen_major              : 4
xen_minor              : 0
xen_extra              : .1-rc4-pre
xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64
xen_scheduler          : credit
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          : Tue Jun 22 07:31:14 2010 +0100 21226:7dcfdd45bc9e
xen_commandline        : dom0_mem=768M loglvl=all loglvl_guest=all
cc_compiler            : gcc version 4.3.2 (Debian 4.3.2-1.1)
cc_compile_by          : root
cc_compile_domain      :
cc_compile_date        : Tue Jun 22 23:48:22 CEST 2010
xend_config_format     : 4
serveerstertje:~#


kernel:
commit 01d9fbca207ec232c758d991d66466fc6e38349e
Merge: cfce2d4... 0a904db...
Author: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Date:   Tue Jun 15 14:09:48 2010 +0100

    Merge branch 'xen/next' into xen/stable-2.6.32.x

    * xen/next:
      netback: minor code formatting fixup
      Netback: Set allocated memory to zero from vmalloc.
      xen/netback: linearise SKBs as we copy them into guest memory on guest-RX.
      xen: netback: drop frag member from struct netbk_rx_meta
      xen: netback: handle NET_SKBUFF_DATA_USES_OFFSET correctly
      xen: netback: Fixes for delayed copy of tx network packets.
      xen/gntdev: use spinlocks rather than rwsem for locking
      xen: Fix to hugepages to work around new PWT handling
      Fix compiler warning.
      xen/balloon: update 'page' for each page



--
Sander

[-- Attachment #2: IMG_3501.JPG --]
[-- Type: image/jpeg, Size: 91434 bytes --]

[-- Attachment #3: IMG_3503.JPG --]
[-- Type: image/jpeg, Size: 92528 bytes --]

[-- Attachment #4: Type: text/plain, Size: 138 bytes --]

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel

Re: infrequent kernel crash just before reboot

[Jeremy Fitzhardinge]

On 06/26/2010 09:13 AM, Sander Eikelenboom wrote:
> Hi All,
>
> Once in a while when i try to reboot my machine the kernel crashes, because it's so infrequently i haven't been able to capture it via a serial log yet.
> I have made 2 photographs from what's left on screen from the oops.
>   

Unfortunately your screenshots just miss out on the vital info to
identify the source of the problem.  However, one question: are there
any domUs running at the the time?  Or any stray tapdisk processes?

Thanks,
    J

> Machine is running :
>
> serveerstertje:~# xm info
> host                   : serveerstertje
> release                : 2.6.32.15+xen-2.6.32.x-20100622-b
> version                : #2 SMP Fri Jun 25 19:29:24 CEST 2010
> machine                : x86_64
> nr_cpus                : 6
> nr_nodes               : 1
> cores_per_socket       : 6
> threads_per_core       : 1
> cpu_mhz                : 3200
> hw_caps                : 178bf3ff:efd3fbff:00000000:00001310:00802001:00000000:000037ff:00000000
> virt_caps              : hvm
> total_memory           : 8126
> free_memory            : 3958
> node_to_cpu            : node0:0-5
> node_to_memory         : node0:3958
> node_to_dma32_mem      : node0:2810
> max_node_id            : 0
> xen_major              : 4
> xen_minor              : 0
> xen_extra              : .1-rc4-pre
> xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64
> xen_scheduler          : credit
> xen_pagesize           : 4096
> platform_params        : virt_start=0xffff800000000000
> xen_changeset          : Tue Jun 22 07:31:14 2010 +0100 21226:7dcfdd45bc9e
> xen_commandline        : dom0_mem=768M loglvl=all loglvl_guest=all
> cc_compiler            : gcc version 4.3.2 (Debian 4.3.2-1.1)
> cc_compile_by          : root
> cc_compile_domain      :
> cc_compile_date        : Tue Jun 22 23:48:22 CEST 2010
> xend_config_format     : 4
> serveerstertje:~#
>
>
> kernel:
> commit 01d9fbca207ec232c758d991d66466fc6e38349e
> Merge: cfce2d4... 0a904db...
> Author: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
> Date:   Tue Jun 15 14:09:48 2010 +0100
>
>     Merge branch 'xen/next' into xen/stable-2.6.32.x
>
>     * xen/next:
>       netback: minor code formatting fixup
>       Netback: Set allocated memory to zero from vmalloc.
>       xen/netback: linearise SKBs as we copy them into guest memory on guest-RX.
>       xen: netback: drop frag member from struct netbk_rx_meta
>       xen: netback: handle NET_SKBUFF_DATA_USES_OFFSET correctly
>       xen: netback: Fixes for delayed copy of tx network packets.
>       xen/gntdev: use spinlocks rather than rwsem for locking
>       xen: Fix to hugepages to work around new PWT handling
>       Fix compiler warning.
>       xen/balloon: update 'page' for each page
>
>
>
> --
> Sander

Re: infrequent kernel crash just before reboot

[Sander Eikelenboom]

Saturday, June 26, 2010, 4:55:58 PM, you wrote:

> On 06/26/2010 09:13 AM, Sander Eikelenboom wrote:
>> Hi All,
>>
>> Once in a while when i try to reboot my machine the kernel crashes, because it's so infrequently i haven't been able to capture it via a serial log yet.
>> I have made 2 photographs from what's left on screen from the oops.
>>   

> Unfortunately your screenshots just miss out on the vital info to
> identify the source of the problem.  However, one question: are there
> any domUs running at the the time?  Or any stray tapdisk processes?

I was allready afraid for that, i also can't give you that info, since i was not paying much attention, since rebooting goes well most of the time.
I will try to keep an eye on it and hope i can report back again with more info.



> Thanks,
>     J

>> Machine is running :
>>
>> serveerstertje:~# xm info
>> host                   : serveerstertje
>> release                : 2.6.32.15+xen-2.6.32.x-20100622-b
>> version                : #2 SMP Fri Jun 25 19:29:24 CEST 2010
>> machine                : x86_64
>> nr_cpus                : 6
>> nr_nodes               : 1
>> cores_per_socket       : 6
>> threads_per_core       : 1
>> cpu_mhz                : 3200
>> hw_caps                : 178bf3ff:efd3fbff:00000000:00001310:00802001:00000000:000037ff:00000000
>> virt_caps              : hvm
>> total_memory           : 8126
>> free_memory            : 3958
>> node_to_cpu            : node0:0-5
>> node_to_memory         : node0:3958
>> node_to_dma32_mem      : node0:2810
>> max_node_id            : 0
>> xen_major              : 4
>> xen_minor              : 0
>> xen_extra              : .1-rc4-pre
>> xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64
>> xen_scheduler          : credit
>> xen_pagesize           : 4096
>> platform_params        : virt_start=0xffff800000000000
>> xen_changeset          : Tue Jun 22 07:31:14 2010 +0100 21226:7dcfdd45bc9e
>> xen_commandline        : dom0_mem=768M loglvl=all loglvl_guest=all
>> cc_compiler            : gcc version 4.3.2 (Debian 4.3.2-1.1)
>> cc_compile_by          : root
>> cc_compile_domain      :
>> cc_compile_date        : Tue Jun 22 23:48:22 CEST 2010
>> xend_config_format     : 4
>> serveerstertje:~#
>>
>>
>> kernel:
>> commit 01d9fbca207ec232c758d991d66466fc6e38349e
>> Merge: cfce2d4... 0a904db...
>> Author: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
>> Date:   Tue Jun 15 14:09:48 2010 +0100
>>
>>     Merge branch 'xen/next' into xen/stable-2.6.32.x
>>
>>     * xen/next:
>>       netback: minor code formatting fixup
>>       Netback: Set allocated memory to zero from vmalloc.
>>       xen/netback: linearise SKBs as we copy them into guest memory on guest-RX.
>>       xen: netback: drop frag member from struct netbk_rx_meta
>>       xen: netback: handle NET_SKBUFF_DATA_USES_OFFSET correctly
>>       xen: netback: Fixes for delayed copy of tx network packets.
>>       xen/gntdev: use spinlocks rather than rwsem for locking
>>       xen: Fix to hugepages to work around new PWT handling
>>       Fix compiler warning.
>>       xen/balloon: update 'page' for each page
>>
>>
>>
>> --
>> Sander




-- 
Best regards,
 Sander                            mailto:linux@eikelenboom.it