Re: NFS oops in 2.6.26rc4

[Chuck Lever]

On Jun 4, 2008, at 10:19 AM, Dave Jones wrote:

> On Fri, May 30, 2008 at 03:37:01PM -0400, Chuck Lever wrote:
>
> > > Something else of note which I hadn't seen before, usually things  
> > > lock
> > > up just after that first oops. For some reason, today it survived
> > > a little longer, but things really went downhill fast.
> > > It survived a 'dmesg ; scp dmesg davej@gelk', and then wedged solid.
> > > So as well as the oops, it seems we're corrupting memory too.
> > > For reference, this kernel has both SLUB_DEBUG and PAGEALLOC_DEBUG
> > > enabled.
> >
> > I haven't seen this kind of problem here with .26, but yes, it does
> > look like something is clobbering memory during an NFS mount.
> >
> > I introduced some NFS mount parsing changes in this commit range:
> >
> >   2d767432..82d101d5
> >
> > A quick bisect should show which, if any of these, is the guilty
> > party.  If any of these are the problem, I suspect it's 3f8400d1.
>
> I didn't get time to try this out yet (hopefully tomorrow).
> In the meantime, we've just gotten word of another user seeing memory
> corruption with nfs - https://bugzilla.redhat.com/show_bug.cgi?id=449958

449958 could very well be the same problem.  The stack traceback is a  
lot cleaner than the one you originally sent, but there are a lot of  
similarities.  (I doubt this is related to symlinks, as the comment  
suggests).

Is commit 86d61d863 applied to the current rawhide kernel?

--
Chuck Lever
chuck[dot]lever[at]oracle[dot]com
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