linux-kernel - Re: [BUG] 2.6.24-git6 soft lockup detected while running libhugetlbfs

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Message-ID: <47A0AE4E.5090400@linux.vnet.ibm.com>
Date:	Wed, 30 Jan 2008 22:35:18 +0530
From:	Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	LKML <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andy Whitcroft <apw@...dowen.org>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>
Subject: Re: [BUG] 2.6.24-git6 soft lockup detected while running libhugetlbfs

Ingo Molnar wrote:
> * Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com> wrote:
> 
>> Softlockup is detected while running libhugetlbfs on the 2.6.24-git6 
>> kernel. The machine is a Pentium III (Cascades) 16 cpu machine.
>>
>> BUG: soft lockup - CPU#13 stuck for 61s! [swapper:0]
> 
> is nohz enabled? And the system did not truly lock up, right?
> 
> 	Ingo
> --
Hi Ingo,

The CONFIG_NO_HZ is not set and the system seems not be truly locked up
,btw wc -l of the softlockup messages is around 108 times, while running
the libhugetlbfs only and this is reproducible with the 2.6.24-git7 also.

-- 
Thanks & Regards,
Kamalesh Babulal,
Linux Technology Center,
IBM, ISTL.
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