linux-kernel - Re: MM kernels 2.6.24-rc*-mm*, 2.6.24-mm1: gnome-terminal stuck in tty

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Message-Id: <1202462912.6274.56.camel@lappy>
Date:	Fri, 08 Feb 2008 10:28:31 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Jay Cliburn <jacliburn@...lsouth.net>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Zan Lynx <zlynx@....org>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: MM kernels 2.6.24-rc*-mm*, 2.6.24-mm1: gnome-terminal stuck in
	tty_poll


On Thu, 2008-02-07 at 19:26 -0600, Jay Cliburn wrote:
> On Thu, 07 Feb 2008 21:24:47 +0100
> Peter Zijlstra <a.p.zijlstra@...llo.nl> wrote:

> The trace isn't from me; it's from Zan.  He's running -mm, I'm not, if
> that makes a difference.
> 
> >         
> >         Call Trace:
> >          [schedule_timeout+149/208] schedule_timeout+0x95/0xd0
> >          [<ffffffff8057dde5>] schedule_timeout+0x95/0xd0
> >          [tty_poll+145/160] tty_poll+0x91/0xa0
> >          [<ffffffff80430f11>] tty_poll+0x91/0xa0
> >          [do_sys_poll+617/880] do_sys_poll+0x269/0x370
> >          [<ffffffff802bbe69>] do_sys_poll+0x269/0x370
> >          [__pollwait+0/304] __pollwait+0x0/0x130
> >          [<ffffffff802bcb30>] __pollwait+0x0/0x130
> 
> Now that my computer is back on the air again, I'll be happy to help
> track this down.  Just tell me what to do.

First would be to see if you could get a sysrq-t dump of the blocked
process. I'm curious if yours would point to the same spot.

Also, could you describe how to reproduce it, given that you managed to
have it reproducable enough to bisect, I'd say you have a good case.

I installed gnome-terminal, started it and wiggled it about while doing
find / - that didn't manage to get it to lock up - but I'll try again if
that is the right way.

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