From: Dave Hansen <haveblue@us.ibm.com>
To: John Levon <levon@movementarian.org>
Cc: oprofile-list@lists.sourceforge.net,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Oops running oprofile in 2.5.62
Date: Thu, 27 Feb 2003 09:54:12 -0800 [thread overview]
Message-ID: <3E5E50C4.1070906@us.ibm.com> (raw)
In-Reply-To: 20030227173704.GA76419@compsoc.man.ac.uk
John Levon wrote:
> On Wed, Feb 26, 2003 at 10:29:43PM -0800, Dave Hansen wrote:
>
>>I'm pretty sure it happened on this line in oprofile_add_sample():
>> cpu_buf->buffer[cpu_buf->pos].eip = eip;
>>
>>Unable to handle kernel paging request at virtual address f8c3c000
>
> Odd. UP or SMP ? Were you shutting down oprofile at the time (or did the
> daemon crash ? check /var/lib/oprofile/oprofiled.log)
16-way NUMAQ :) It was in the middle of a dbench run, so nothing
critical was happening with oprofile.
> The only thing I can think is that the buffer got freed then we got an
> NMI afterwards (which obviously isn't supposed to happen...)
The irqbalance code is causing some funniness on these machines, so it
might be related. I'll speak up if I see it again.
--
Dave Hansen
haveblue@us.ibm.com
next prev parent reply other threads:[~2003-02-27 17:48 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-27 6:29 Oops running oprofile in 2.5.62 Dave Hansen
2003-02-27 17:37 ` John Levon
2003-02-27 17:54 ` Dave Hansen [this message]
2003-03-05 20:15 ` Philippe Elie
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