linux-kernel - Re: [BUG] rbtree bug with mmotm 2009-04-14-17-24

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Message-ID: <20090424052840.GB6867@balbir.in.ibm.com>
Date:	Fri, 24 Apr 2009 10:58:40 +0530
From:	Balbir Singh <balbir@...ux.vnet.ibm.com>
To:	Jens Axboe <jens.axboe@...cle.com>
Cc:	Steve Wise <swise@...ngridcomputing.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Wolfram Strepp <wstrepp@....de>
Subject: Re: [BUG] rbtree bug with mmotm 2009-04-14-17-24

* Jens Axboe <jens.axboe@...cle.com> [2009-04-23 12:40:55]:

> On Wed, Apr 22 2009, Steve Wise wrote:
> > Jens Axboe wrote:
> >
> >  
> >
> >>> Still crashes with this variant:
> >>>     
> >>
> >> OK, so please try and revert a36e71f996e25d6213f57951f7ae1874086ec57e
> >> and see if that works?
> >>
> >> Or, better yet, please try and revert
> >> 55a63998b8967615a15e2211ba0ff3a84a565824 first. If that doesn't work,
> >> try the above revert.
> >>
> >>   
> >
> > Reverting 55a63998b8967615a15e2211ba0ff3a84a565824 did the trick.
> 
> Steve, can you (and Balbir) try with pulling this into 2.6.30-rc3:
> 
>         git://git.kernel.dk/linux-2.6-block.git for-linus
> 
> It has two fixes for possible rbtree misuse in cfq. If it still crashes
> without reverting 55a63998b8967615a15e2211ba0ff3a84a565824 with that,
> then we also need to look further into the rbtree issue.
>

OK, I'll give it a try and get back with what I see. 

-- 
	Balbir
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