linux-kernel - Re: 2.6.21-rc7-mm2 hangs in boot (netconsole)

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Date:	Tue, 1 May 2007 05:43:30 +0200
From:	Andi Kleen <ak@...e.de>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Randy Dunlap <randy.dunlap@...cle.com>,
	linux-kernel@...r.kernel.org, Andi Kleen <ak@...e.de>
Subject: Re: 2.6.21-rc7-mm2 hangs in boot (netconsole)

> Andi: unprocessor x86_64 running rc7-mm2 is hanging early in boot at
> randomish times (presumably in the timer irq handler) when netconsole and
> printk-time are enabled.

A backtrace would be good. Does nmi_watchdog=2 show anything
interesting or if not sysrq-t?

> 
> I was hitting the same thing on i386 uniprocessor, but I thought it got
> fixed.

Yes.

My current sched_clock does not take any locks anymore and it was removed
from the cpufreq handler too.

-Andi
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