kern/130330: [mpt] [panic] Panic and reboot machine MPT ...

[John Baldwin]

On Thursday 07 May 2009 11:50:12 am Riccardo Torrini wrote:
> I just submitted a follow-up to PR kern/130330 with the same
> info.  Maybe I found the committed lines doing the crash.
> 
> Please see PR for more detailed info (and cc: this thread to me).
> 
> I restricted the time window of the problem doing (a lot of)
> build&install world from 2008.07 up to now (read last week).
> 
> With 2008.07.28.17.00.00 (7.0-STABLE) works fine but
> with 2008.07.28.18.00.00 start crashing removing the
> the second disk of a mirror (when the mirror is ok)
> or adding the second disk of a degraded ones.
> 
> Also note that the same crash happens with all 7.1
> stable or release and even all 7.2-PRE I tested.
> 
> (wrapping long lines)
> # cd /home/ncvs/src/sys/
> # grep -R "date.*2008\.07\.28\.17" ./ | grep -v /Attic
> 
> ./dev/wi/if_wi.c,v:
>         date    2008.07.28.17.00.37;    author imp;     state Exp;
> ./dev/wi/if_wivar.h,v:
>         date    2008.07.28.17.00.37;    author imp;     state Exp;
> ./dev/mpt/mpt_raid.c,v:
>         date    2008.07.28.17.10.09;    author jhb;     state Exp;
> ./dev/mpt/mpt_raid.c,v:
>         date    2008.07.28.17.05.09;    author jhb;     state Exp;
> ./kern/sched_4bsd.c,v:
>         date    2008.07.28.17.25.24;    author jhb;     state Exp;
> ./modules/et/Makefile,v:
>         date    2008.07.28.17.56.37;    author antoine; state Exp;
> 
> In that time window there are only 4 file changed in
> src/sys/dev, and I bet to mpt_raid.c  :-)
> 
> This is the commit log extracted from cvsweb
> -----8<-----
> Revision 1.15.2.1:
> Mon Jul 28 17:05:09 2008 UTC (9 months, 1 week ago) by jhb
> Branches: RELENG_7
> CVS tags: RELENG_7_1_BP
> Branch point for: RELENG_7_1
> Diff to: previous 1.15: preferred, colored
> Changes since revision 1.15: +4 -4 lines
> 
> SVN rev 180920 on 2008-07-28 17:05:09Z by jhb
> 
> MFC: Allocate a single CCB at the start of the main loop of the RAID
> monitoring kthread of the mpt(4) driver.
> -----8<-----
> 
> Here are the diff:
> 
http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/dev/mpt/mpt_raid.c.diff?r1=1.15;r2=1.15.2.1
> 
> 
> What can I do now?

Can you get more details on the crash, perhaps a crash dump?

-- 
John Baldwin