linux-kernel - Re: NULL pointer dereference in ext4_ext_remove

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Message-ID: <87d31keme1.fsf@openvz.org>
Date:	Mon, 17 Sep 2012 18:48:06 +0400
From:	Dmitry Monakhov <dmonakhov@...nvz.org>
To:	Theodore Ts'o <tytso@....edu>
Cc:	Marti Raudsepp <marti@...fo.org>,
	Kernel hackers <linux-kernel@...r.kernel.org>,
	ext4 hackers <linux-ext4@...r.kernel.org>, maze@...gle.com
Subject: Re: NULL pointer dereference in ext4_ext_remove_space on 3.5.1

On Mon, 17 Sep 2012 09:52:15 -0400, Theodore Ts'o <tytso@....edu> wrote:
> On Mon, Sep 17, 2012 at 04:21:44PM +0400, Dmitry Monakhov wrote:
> > On Wed, 15 Aug 2012 22:46:54 -0400, Theodore Ts'o <tytso@....edu> wrote:
> > > On Wed, Aug 15, 2012 at 09:33:29PM +0300, Marti Raudsepp wrote:
> > > > I was moving and deleting some files between two of my ext4 partitions
> > > > when it suddenly crashed and dropped me into an kernel oops screen
> > > > (below). I'm using ext4 on kernel 3.5.1 (Arch Linux). 
> > Ohh, I've missed that gigantic topic, but still i've found the bug.
> > patch is available here http://patchwork.ozlabs.org/patch/183649/
> 
> Dmitry, we have a patch in mainline already which addresses this, and
> it's already backported to v3.5.3 or later.
> 
> What version was your patch series based against?
patch-set was prepared against d0f56971992a0bcc7 (old ext4.git's HEAD)
And you right your patch fixed the issue. So you can ignore my version.
but other patches from the 'Bunch of DIO/AIO fixes V2' queue are still
valid an applies to recent git tree w/o problems.
Should i resend whole series or you'll pick original one?
> 
> 						- Ted
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