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SubjectRe: 2.6.17-rc6-mm1
On Tue, Jun 20, 2006 at 07:42:29PM +0200, Arjan van de Ven wrote:
> On Thu, 2006-06-08 at 01:00 -0400, Dave Jones wrote:
> > On Wed, Jun 07, 2006 at 10:47:24AM -0700, Andrew Morton wrote:
> > >
> > > ftp://ftp.kernel.org/pub/linux/kernel/peopleD/akpm/patches/2.6/2.6.17-rc6/2.6.17-rc6-mm1/
> > >
> > > - Many more lockdep updates
> >
> > Needs more.
> >
> > ====================================
> > [ BUG: possible deadlock detected! ]
> > ------------------------------------
> > nfsd/11429 is trying to acquire lock:
> > (&inode->i_mutex){--..}, at: [<c032286a>] mutex_lock+0x21/0x24
> >
> > but task is already holding lock:
> > (&inode->i_mutex){--..}, at: [<c032286a>] mutex_lock+0x21/0x24
> >
> > which could potentially lead to deadlocks!
>
> Does this fix it for you? (it fixes the case for me)

Hmm. This makes things drastically worse for me. Now it hangs during NFS startup.

$ sudo service nfs start
Starting NFS services: [ OK ]
Starting NFS quotas:

and that's all she wrote.

ps axf..

2757 pts/0 S+ 0:00 | \_ /bin/sh /sbin/service nfs start
2760 pts/0 S+ 0:00 | \_ /bin/sh /etc/init.d/nfs start
2771 pts/0 S+ 0:00 | \_ /bin/bash -c ulimit -S -c 0 >/dev/null 2>&1 ; rpc.rquotad
2772 pts/0 S+ 0:00 | \_ rpc.rquotad


If I ssh into the box, and get sysrq-t output, I see..
http://people.redhat.com/davej/nfs

I've kicked off a clean build that I'll leave running overnight, as I'm not
100% sure that was a clean tree I built from. Odd behaviour for a miscompile though.

Dave

--
http://www.codemonkey.org.uk
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