From: Urban Loesch <bind@enas.net>
To: Shawn Bohrer <shawn.bohrer@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: divide by zero error: find busiest group on kernel 2.6.38.4
Date: Mon, 19 Dec 2011 09:02:07 +0100 [thread overview]
Message-ID: <4EEEEF7F.8070506@enas.net> (raw)
In-Reply-To: <20111216231414.GA7941@BohrerMBP.rgmadvisors.com>
Hi,
On 17.12.2011 00:14, Shawn Bohrer wrote:
> On Sun, Dec 04, 2011 at 03:00:00PM +0100, Urban Loesch wrote:
>> I'm running a DELL PE R610 with kernel
>> 2.6.38.4 patched with linux vserver version vs2.3.0.37-rc15 from
>> http://linux-vserver.org.
>>
>> The server runs fine about 220 days without any problems.
>> But last night there was a kernel panic and the server totally hangs.
>>
>> Thanks to netconsole I got the following error in my syslogserver:
>>
>>
>> 2011-12-04 00:32:16 divide error: 0000 [#1]
>> 2011-12-04 00:32:16 SMP
> <snip>
>> 2011-12-04 00:32:16 Pid: 0, comm: kworker/0:1 Not tainted
>> 2.6.38.4-vs2.3.0.37-rc15-rol-em64t #1
>> 2011-12-04 00:32:16
>> 2011-12-04 00:32:16 Dell Inc. PowerEdge R610
>> 2011-12-04 00:32:16 /
>> 2011-12-04 00:32:16 0F0XJ6
>> 2011-12-04 00:32:16
>> 2011-12-04 00:32:16 RIP: 0010:[<ffffffff8103abb8>]
>> 2011-12-04 00:32:16 [<ffffffff8103abb8>]
>> find_busiest_group+0x428/0xdd0
>
> This looks like the same issue as:
>
> http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=636797
> and
> https://bugs.launchpad.net/linux/+bug/614853
>
> In theory there is also a bugzilla.kernel.org ticket on this issue as
> well though bugzilla.kernel.org is still down.
>
> https://bugzilla.kernel.org/show_bug.cgi?id=16991
>
> Debian and Ubuntu have papered over this bug by skipping the divide if
> cpu_power is 0.
>
>> I searched the archives but I didn't find any related information.
>> Have you any idea what this error could be and is it fixed in kernel 3.1?
>
> To my knowledge the cause of this bug is still unknown. It is
> possible it is fixed in newer kernels, but it is hard to tell since it
> doesn't seem to occur until you have reached 200+ days of uptime.
>
Not sure if that describes exactly the same problem:
http://comments.gmane.org/gmane.linux.kernel/1132515
Patch:
http://git.kernel.org/?p=linux/kernel/git/tip/tip.git;a=commitdiff;h=4cecf6d401a01d054afc1e5f605bcbfe553cb9b9
This issue was fixed in 3.1.5.
http://www.kernel.org/pub/linux/kernel/v3.0/ChangeLog-3.1.5
> --
> Shawn
>
Thanks
Urban
prev parent reply other threads:[~2011-12-19 8:02 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-04 14:00 divide by zero error: find busiest group on kernel 2.6.38.4 Urban Loesch
2011-12-16 23:14 ` Shawn Bohrer
2011-12-19 8:02 ` Urban Loesch [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4EEEEF7F.8070506@enas.net \
--to=bind@enas.net \
--cc=linux-kernel@vger.kernel.org \
--cc=shawn.bohrer@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).