All of lore.kernel.org
 help / color / mirror / Atom feed
From: Jens Axboe <jens.axboe@oracle.com>
To: Steve Wise <swise@opengridcomputing.com>
Cc: balbir@linux.vnet.ibm.com,
	Andrew Morton <akpm@linux-foundation.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Wolfram Strepp <wstrepp@gmx.de>
Subject: Re: [BUG] rbtree bug with mmotm 2009-04-14-17-24
Date: Wed, 22 Apr 2009 18:30:32 +0200	[thread overview]
Message-ID: <20090422163032.GV4593@kernel.dk> (raw)
In-Reply-To: <49EF2C32.4030409@opengridcomputing.com>

On Wed, Apr 22 2009, Steve Wise wrote:
>
>>>
>>> No there are a few patches applied that are heading upstream, but one 
>>> is in the NFS RDMA server which isn't loaded yet and the rest are in  
>>> iw_cxgb3 (iwarp driver) which also hasn't loaded at the time we  
>>> crash. NOTE:  Out of 4 power cycles, one booted up ok, 3 hit the 
>>> crash.
>>>
>>>
>>>
>>
>> By the way, this one looks different from the last one I saw.  So its  
>> not consistently crashing in the same spot.  The one I hit yesterday  
>> (which I don't have the OOPs dump for was in rb_erase().
>>
>> Steve.
>
> I'll start bisecting to isolate this.

Don't bother, I see what the bug is now. It's caused by commit
a36e71f996e25d6213f57951f7ae1874086ec57e and it's due to ->ioprio being
changed without the prio rb root being adjusted.

I'll provide a fix shortly.

-- 
Jens Axboe


  reply	other threads:[~2009-04-22 16:30 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-04-21 18:42 [BUG] rbtree bug with mmotm 2009-04-14-17-24 Balbir Singh
2009-04-21 22:03 ` Steve Wise
2009-04-22 13:17   ` Jens Axboe
2009-04-22 14:24     ` Steve Wise
2009-04-22 14:27       ` Steve Wise
2009-04-22 14:39         ` Steve Wise
2009-04-22 16:30           ` Jens Axboe [this message]
2009-04-22 16:37             ` Jens Axboe
2009-04-22 18:17               ` Steve Wise
2009-04-22 18:34                 ` Jens Axboe
2009-04-22 18:59                   ` Steve Wise
2009-04-22 19:22                     ` Jens Axboe
2009-04-22 20:17                       ` Steve Wise
2009-04-22 20:34                         ` Steve Wise
2009-04-23  5:34                           ` Jens Axboe
2009-04-23 10:40                         ` Jens Axboe
2009-04-23 21:24                           ` Steve Wise
2009-04-24  5:28                           ` Balbir Singh
2009-04-22 13:16 ` Jens Axboe

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=20090422163032.GV4593@kernel.dk \
    --to=jens.axboe@oracle.com \
    --cc=akpm@linux-foundation.org \
    --cc=balbir@linux.vnet.ibm.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=swise@opengridcomputing.com \
    --cc=wstrepp@gmx.de \
    /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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.