linux-kernel - Re: 2.6.18-rt1

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Date:	Fri, 13 Oct 2006 18:12:16 -0400
From:	Lee Revell <rlrevell@...-job.com>
To:	dipankar@...ibm.com
Cc:	Karsten Wiese <annabellesgarden@...oo.de>,
	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>,
	John Stultz <johnstul@...ibm.com>,
	"Paul E. McKenney" <paulmck@...ibm.com>,
	Arjan van de Ven <arjan@...radead.org>
Subject: Re: 2.6.18-rt1

On Sat, 2006-10-14 at 02:54 +0530, Dipankar Sarma wrote:
> Can you try with nmi_watchdog=0 in the kernel command line ?
> 
> Paul has an NMI-safe patch for rcupreempt which I am adopting
> and testing at the moment. If this works well, I will publish
> a new patchset.
> 

The bug is too hard to hit for me to provide useful feedback.  I've only
seen it once since my original report.

FWIW, I am also seeing hard lockups every 12-24 hours but the box is
headless and I don't have the bandwidth to debug these further.  It was
stable with 2.6.17-rt*.

Lee

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