Bug#638984: BUG: soft lockup - CPU#1 stuck for 61s! [kswapd0:188]
Hi Ben,
thanks for the quick reply!
On Wed, Aug 24, 2011 at 04:32, Ben Hutchings <ben@decadent.org.uk> wrote:
> On Tue, 2011-08-23 at 16:17 +0200, Sandro Tosi wrote:
>> Package: linux-2.6
>> Version: 2.6.32-35
>> Severity: important
>>
>> Hello,
>> we've had several server-class machine (G6 and G7 HP Proliant blades) affected
>> by the kernel bug mentioned in the subject.
>>
>> On the console we can see several several instances of the message:
>>
>> BUG: soft lockup - CPU#1 stuck for 61s! [kswapd0:188]
>>
>> and then the machine is freezed and need a hard reset.
>>
>> I've cut&pasted what's left from the kern.log (remotely logged on another
>> machine) since I don't have access anymore to those files (plus a bit of
>> anonymization about the network :)).
>>
>> It's an high priority for us to get it fixed so we can provide all the help you
>> might need: just ask about it.
>>
>> I've googled a bit about the problem and found these references:
>>
>> http://kerneltrap.org/mailarchive/linux-kernel/2010/11/16/4646082/thread
>> https://bugzilla.redhat.com/show_bug.cgi?id=649694
> [...]
>
> The error message you are seeing is not at all specific, so we should
> not assume it has anything to do with the Red Hat bug report.
>
> Unfortunately your log shows almost no useful information; the call
> traces have been lost. The only function that is mentioned in your log
> is find_get_pages(), which is not present in any of the call traces in
> the Red Hat bug report.
Oh I see - of course it would have been too easy :)
> It may be that serial logging will be more reliable; could you enable a
> serial console and try to capture the error log on another system?
We've started the process to enable the serial console logging on the
involved machines: do you have any tips that can speed up our
operations team to enable it (in particular a way that could get us
the messages we need)?
Thank in advance,
--
Sandro Tosi (aka morph, morpheus, matrixhasu)
My website: http://matrixhasu.altervista.org/
Me at Debian: http://wiki.debian.org/SandroTosi
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