linux-kernel - Re: random hangs during boot in 3.0-rc

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Message-ID: <20110607162454.GA16521@redhat.com>
Date:	Tue, 7 Jun 2011 12:24:54 -0400
From:	Dave Jones <davej@...hat.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: random hangs during boot in 3.0-rc

On Tue, Jun 07, 2011 at 01:01:02PM +0200, Ingo Molnar wrote:
 > 
 > * Dave Jones <davej@...hat.com> wrote:
 > 
 > > I have two machines that occasionally (like 1 in 10 boots or so) 
 > > hang solid during boot-up.  Happens in different places, but 
 > > usually either when loading the microcode driver, or while doing a 
 > > fsck.
 > 
 > I think this commit in tip:sched/urgent will fix it:
 > 
 >   f2513cde93f0: lockdep: Fix lock_is_held() on recursion
 > 
 > Will send it to Linus later today.

Indeed. Looks like that does fix the problem. 
I've done a number of reboots on one of the affected machines this morning,
without any hangs.

	Dave

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