linux-kernel - Re: [Patch] hfsplus oops on image without extends

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Message-ID: <20080509142626.GA20287@alice>
Date:	Fri, 9 May 2008 16:26:26 +0200
From:	Eric Sesterhenn <snakebyte@....de>
To:	Andy Whitcroft <apw@...dowen.org>
Cc:	linux-kernel@...r.kernel.org, akpm@...l.org, zippel@...ux-m68k.org
Subject: Re: [Patch] hfsplus oops on image without extends

* Andy Whitcroft (apw@...dowen.org) wrote:
> On Wed, May 07, 2008 at 12:42:44PM +0200, Eric Sesterhenn wrote:
> > hi,
> > 
> > the following patch fixes an oops with a corrupted hfs+ image.
> > see http://bugzilla.kernel.org/show_bug.cgi?id=10548 for details.
> > 
> > Problem is that we call hfs_btree_open() from hfsplus_fill_super() to set
> > HFSPLUS_SB(sb).[ext_tree|cat_tree]
> > Both trees are still NULL at this moment. If hfs_btree_open() fails for
> > any reason it calls iput() on the page, which
> > gets to hfsplus_releasepage() which tries to access HFSPLUS_SB(sb).*
> > which is still NULL and oopses while dereferencing it.
> 
> Erm, I presume this is meant to be 'if', checkpatch whined about the
> space as it thought it was a function.  I guess this hasn't been compile
> tested?

sorry, i messed this up, didnt have the original patch anymore and
quickly recreated it. Andrew already put a fix in -mm

Greetings, Eric
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