linux-kernel - Re: [PATCH] gfs2: Fix refcnt leak on gfs2_follow

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Date:	Tue, 12 Jan 2010 09:51:05 +0000
From:	Steven Whitehouse <swhiteho@...hat.com>
To:	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
Cc:	cluster-devel@...hat.com, linux-kernel@...r.kernel.org,
	linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH] gfs2: Fix refcnt leak on gfs2_follow_link() error path

Hi,

Thanks for the patch. I've pushed it into the GFS2 -fixes tree,

Steve.

On Tue, 2010-01-12 at 03:36 +0900, OGAWA Hirofumi wrote:
> If ->follow_link handler return the error, it should decrement
> nd->path refcnt.
> 
> This patch fix it.
> 
> Signed-off-by: OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
> ---
> 
>  fs/gfs2/ops_inode.c |    3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff -puN fs/gfs2/ops_inode.c~namei-gfs2-follow_link-fix fs/gfs2/ops_inode.c
> --- linux-2.6/fs/gfs2/ops_inode.c~namei-gfs2-follow_link-fix	2010-01-12 00:15:12.000000000 +0900
> +++ linux-2.6-hirofumi/fs/gfs2/ops_inode.c	2010-01-12 00:15:12.000000000 +0900
> @@ -1086,7 +1086,8 @@ static void *gfs2_follow_link(struct den
>  		error = vfs_follow_link(nd, buf);
>  		if (buf != array)
>  			kfree(buf);
> -	}
> +	} else
> +		path_put(&nd->path);
>  
>  	return ERR_PTR(error);
>  }
> _
> 


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