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Old 03-01-2010, 09:39 PM
Moritz Muehlenhoff
 
Default Bug#532906: linux-image-2.6.26-2-amd64: Unable to handle kernel paging request

On Sun, Jun 14, 2009 at 01:23:17AM +0100, Ben Hutchings wrote:
> On Fri, 2009-06-12 at 12:24 -0400, Arnout Boelens wrote:
> > Package: linux-image-2.6.26-2-amd64
> > Version: 2.6.26-15lenny3
> > Severity: normal
> >
> >
> > Every once I a while I get kernel oops on one of my computers and find the following messages back in my syslog:
> >
> > Jun 12 10:42:03 yama kernel: [848178.269002] BUG: unable to handle kernel paging request at 000000002f467780
> > Jun 12 10:42:03 yama kernel: [848178.269002] IP: [<000000002f467780>]
> [...]
> > Jun 12 10:42:03 yama kernel: [848178.269002] Call Trace:
> > Jun 12 10:42:03 yama kernel: [848178.269002] [<ffffffffa031f9ab>] ? :sunrpc:rpcauth_lookup_credcache+0xae/0x1e9
> [...]
>
> That corresponds to this line in rpcauth_lookup_credcache():
>
> if (!entry->cr_ops->crmatch(acred, entry, flags))
>
> The function pointer entry->cr_ops->crmatch has turned out not to be a
> valid function address, and since entry->cr_ops should be pointing to a
> static constant structure which cannot itself be corrupted this suggests
> that *entry has somehow been corrupted.
>
> There is an upstream change that might deal with this issue, but I'm not
> convinced that it's related:
>
> commit 5f707eb429e2c98dfd564ffbbd9f536bf493d869
> Author: Trond Myklebust <Trond.Myklebust@netapp.com>
> Date: Tue Oct 28 15:21:42 2008 -0400
>
> SUNRPC: Fix potential race in put_rpccred()

Arnout, what's the status of this bug? Did it reoccur, did you switch to a more
recent kernel? If so, does the problem persist?

Cheers,
Moritz



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Old 03-03-2010, 11:10 PM
Arnout Boelens
 
Default Bug#532906: linux-image-2.6.26-2-amd64: Unable to handle kernel paging request

On Monday 01 March 2010 17:39:55 Moritz Muehlenhoff wrote:
> Arnout, what's the status of this bug? Did it reoccur, did you switch to a
> more recent kernel? If so, does the problem persist?

I ended up upgrading to kernel 2.26.30 from backports yesterday, and so far it
seems the problem has disappeared.

Cheers,

Arnout
 

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