linux-ext4 - Re: [patch] Null dereference in ext4_ext

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Message-ID: <20090216010647.GA22619@mini-me.lan>
Date:	Sun, 15 Feb 2009 20:06:47 -0500
From:	Theodore Tso <tytso@....edu>
To:	Dan Carpenter <error27@...il.com>
Cc:	aneesh.kumar@...ux.vnet.ibm.com, linux-ext4@...r.kernel.org,
	adilger@....com
Subject: Re: [patch] Null dereference in ext4_ext_migrate()

On Tue, Feb 03, 2009 at 10:49:22AM +0300, Dan Carpenter wrote:
> There is a potential null dereference of tmp_inode.
>
> The patch also removes an unnecessary check for whether tmp_inode is null.
>
> This was found through a code checker (http://repo.or.cz/w/smatch.git/).  
> It looks like you might be able to trigger the error by trying to migrate 
> a readonly file system.  I have only compile tested though, sorry.

Thanks, I've included this in the ext4 patch queue to be pushed to Linus.

	     	      	      	       	     	   - Ted
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