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()
Ben.
--
Ben Hutchings
Never attribute to conspiracy what can adequately be explained by stupidity.
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