[Bug 13311] mptsas: ioc0: removing ssp device, kernel oops

[bugzilla-daemon@bugzilla.kernel.org]

http://bugzilla.kernel.org/show_bug.cgi?id=13311





--- Comment #3 from Mike Loseke <mike.tummy@gmail.com>  2009-06-09 21:27:07 ---
On Thu, May 28, 2009 at 2:00 AM, Andrew Morton
<akpm@linux-foundation.org> wrote:
>
> (switched to email.  Please respond via emailed reply-to-all, not via the
> bugzilla web interface).
>
> On Thu, 14 May 2009 18:17:10 GMT bugzilla-daemon@bugzilla.kernel.org wrote:
>
> > http://bugzilla.kernel.org/show_bug.cgi?id=13311
> >
> >            Summary: mptsas: ioc0: removing ssp device, kernel oops
>
> I'd have thought that the severity of this problem is not matched by
> the response.
>
> >            Product: SCSI Drivers
> >            Version: 2.5
> >     Kernel Version: 2.6.27.21
>
> Is it reproducible?  If so, is there any change that it can be retested
> under a 2.6.29-based kernel?

We've put a 2.6.29 kernel on these two systems and experienced another
kernel oops yesterday.  So far, we haven't been able to reproduce it
on demand, but it has occurred under a heavier system load each time
(load average of 16 with 2,000 blocks/sec every 5 seconds writes to
the devices attached using the mptsas driver.

The oops from yesterday isn't identical to the previous oops, but the
end result is the same where the system has to be rebooted.  I've
attached that the log capture of the oops.

The system is identical to the original specs, just the kernel has changed:

# cat /proc/version
Linux version 2.6.29.4-0.1-default (root@tile01-primary) (gcc version
4.3.2 [gcc-4_3-branch revision 141291] (SUSE Linux) ) #1 SMP Tue May
26 22:50:58 CDT 2009

Hopefully this is helpful.

Mike

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