linux-ext4 - Re: [PATCH] check return of ext4_orphan

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Date:	Fri, 11 Apr 2008 13:23:32 -0700
From:	Mingming Cao <cmm@...ibm.com>
To:	Josef Bacik <jbacik@...hat.com>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: [PATCH] check return of ext4_orphan_get properly

On Fri, 2008-04-11 at 15:32 -0400, Josef Bacik wrote:
> Hello,
> 
> Hit a panic while running fsfuzzer, seems we are improperly checking the return
> of ext4_orphan_get.  This patch fixes the problem, thank you
> 
> Signed-off-by: Josef Bacik <jbacik@...hat.com>
> 

Thanks, added to the patch queue.
> 
> Index: linux-2.6/fs/ext4/super.c
> ===================================================================
> --- linux-2.6.orig/fs/ext4/super.c
> +++ linux-2.6/fs/ext4/super.c
> @@ -1652,8 +1652,8 @@ static void ext4_orphan_cleanup (struct 
>  	while (es->s_last_orphan) {
>  		struct inode *inode;
> 
> -		if (!(inode =
> -		      ext4_orphan_get(sb, le32_to_cpu(es->s_last_orphan)))) {
> +		inode = ext4_orphan_get(sb, le32_to_cpu(es->s_last_orphan));
> +		if (IS_ERR(inode)) {
>  			es->s_last_orphan = 0;
>  			break;
>  		}
> --
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