From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
To: Luke Hutchison <luke.hutch@gmail.com>
Cc: kosaki.motohiro@jp.fujitsu.com, linux-kernel@vger.kernel.org,
linux-mm <linux-mm@kvack.org>, Mel Gorman <mel@csn.ul.ie>
Subject: Re: "BUG: soft lockup - CPU#0 stuck for 61s! [kswapd0:184]"
Date: Tue, 9 Nov 2010 14:33:12 +0900 (JST) [thread overview]
Message-ID: <20101109142733.BC69.A69D9226@jp.fujitsu.com> (raw)
In-Reply-To: <AANLkTimXSSU7Mc05URg3HsONC4iyDTMVJdRxvQ1fNntH@mail.gmail.com>
> Hi,
>
> I just wanted to report a bug upstream that is affecting the latest
> versions of at least both Fedora and Ubuntu. CPUs somehow lock up
> under load, producing errors of the form "BUG: soft lockup - CPU#0
> stuck for 61s! [kswapd0:184]"
>
> The Fedora Bug report is here:
> https://bugzilla.redhat.com/show_bug.cgi?id=649694 -- however you can
> find lots of references to the error message on other distributions
> (including Ubuntu) by googling "bug soft lockup cpu stuck".
>
> Lockups seem to happen on server-class hardware under heavy loads when
> the machine is swapping. This can lead to the entire machine locking
> up in some reported cases (although so far only individual CPUs seem
> to have locked up in my case, not the entire machine). The point at
> which the CPU hangs varies -- see the dmesg output I attached to the
> Fedora bug report above.
>
> My machine is a 12-way Xeon X5680 system with ext3, AFS and XFS
> filesystems (XFS is running on hardware RAID). Please let me know if
> you need other info that would be helpful to diagnosing the problem.
AFAIK, This isssue was already fixed by Mel.
http://kerneltrap.org/mailarchive/linux-kernel/2010/10/27/4637977
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next parent reply other threads:[~2010-11-09 5:33 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <AANLkTimXSSU7Mc05URg3HsONC4iyDTMVJdRxvQ1fNntH@mail.gmail.com>
2010-11-09 5:33 ` KOSAKI Motohiro [this message]
2010-11-09 5:50 ` Luke Hutchison
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