linux-kernel - Re: 2.6.33.5 rt23: machine lockup (nfs/autofs related?)

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Date:	Fri, 09 Jul 2010 16:24:29 -0700
From:	Fernando Lopez-Lezcano <nando@...ma.Stanford.EDU>
To:	john stultz <johnstul@...ibm.com>
Cc:	nando@...ma.Stanford.EDU, Thomas Gleixner <tglx@...utronix.de>,
	LKML <linux-kernel@...r.kernel.org>,
	rt-users <linux-rt-users@...r.kernel.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Nick Piggin <npiggin@...e.de>
Subject: Re: 2.6.33.5 rt23: machine lockup (nfs/autofs related?)

On Fri, 2010-07-09 at 16:07 -0700, Fernando Lopez-Lezcano wrote:
> 	On Fri, 2010-07-09 at 15:31 -0700, john stultz wrote:
> > On Fri, 2010-07-09 at 15:13 -0700, Fernando Lopez-Lezcano wrote:
> > > On Fri, 2010-07-09 at 12:54 -0700, john stultz wrote:
> > > > On Fri, 2010-07-09 at 12:02 -0700, Fernando Lopez-Lezcano wrote:
> > > > > Ok, I got one! (had to go buy a null modem cable, I thought I had one
> > > > > but it has disappeared since the last time I did this :-)
> > > > 
> > > > Great! Sorry to make you go shopping! But this points out the problem
> > > > nicely.
> > > 
> > > No problem at all, I was sure I had one... anyway, I still need it :-<
> > > 
> > > > > Find it below... it keeps spewing stuff every once in a while. Hopefully
> > > > > this will be enough. No response from the network or the keyboard or
> > > > > mouse at this point, reset is the only way out. 
> > > > > 
> > > > > I can retest if somebody comes up with a patch...
> > > 
> > > Sorry, it looks like the patch patched correctly and this is the new
> > > kernel, but I still get a hang as before. 
> > 
> > Huh. Exact same backtrace? Maybe there's more then one issue with that
> > function...
> 
> Hmmm, most likely I made some mistake - I'll double check and report
> back. 

Argh, something's wrong with what I did, I'm looking at the source in
the build server and it appears to not be patched (but I saw it being
patched in the logs with no error? go figure...). 

-- Fernando


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