linux-kernel - Re: 2.6 patch] fs/gfs2/ops_fstype.c:fill_super

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Date:	Thu, 19 Oct 2006 15:09:22 +0100
From:	Steven Whitehouse <swhiteho@...hat.com>
To:	Adrian Bunk <bunk@...sta.de>
Cc:	cluster-devel@...hat.com, linux-kernel@...r.kernel.org
Subject: Re: 2.6 patch] fs/gfs2/ops_fstype.c:fill_super_meta(): fix NULL
	dereference

Hi,

 ... and this one is pushed to the GFS2 git tree too. Thanks for the
patches,

Steve.

On Thu, 2006-10-19 at 15:27 +0200, Adrian Bunk wrote:
> Don't dereference new->s_root when we do know it's NULL.
> 
> Spotted by the Coverity checker.
> 
> Signed-off-by: Adrian Bunk <bunk@...sta.de>
> 
> --- linux-2.6/fs/gfs2/ops_fstype.c.old	2006-10-19 15:24:23.000000000 +0200
> +++ linux-2.6/fs/gfs2/ops_fstype.c	2006-10-19 15:24:32.000000000 +0200
> @@ -793,10 +793,10 @@ static int fill_super_meta(struct super_
>  	if (!new->s_root) {
>  		fs_err(sdp, "can't get root dentry\n");
>  		error = -ENOMEM;
>  		iput(inode);
> -	}
> -	new->s_root->d_op = &gfs2_dops;
> +	} else
> +		new->s_root->d_op = &gfs2_dops;
>  
>  	return error;
>  }
>  
> 

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