[PATCH] jffs2: fix a memleak in read_direntry()

[Brian Norris]

On Tue, Sep 29, 2015 at 11:23:55AM +0800, fangwei1 at huawei.com wrote:
> From: Wei Fang <fangwei1 at huawei.com>
> 
> Need to free the memory allocated for 'fd' if failed to read all
> of the remainder name.
> 
> Signed-off-by: Wei Fang <fangwei1 at huawei.com>

Patch looks OK to me, and obvious. Applied, but I'm open to comments.

Brian

> ---
>  fs/jffs2/readinode.c |    6 +++++-
>  1 files changed, 5 insertions(+), 1 deletions(-)
> 
> diff --git a/fs/jffs2/readinode.c b/fs/jffs2/readinode.c
> index 28e0aab..bfebbf1 100644
> --- a/fs/jffs2/readinode.c
> +++ b/fs/jffs2/readinode.c
> @@ -660,8 +660,12 @@ static inline int read_direntry(struct jffs2_sb_info *c, struct jffs2_raw_node_r
>  
>  		err = jffs2_flash_read(c, (ref_offset(ref)) + read,
>  				rd->nsize - already, &read, &fd->name[already]);
> -		if (unlikely(read != rd->nsize - already) && likely(!err))
> +		if (unlikely(read != rd->nsize - already) && likely(!err)) {
> +			jffs2_free_full_dirent(fd);
> +			JFFS2_ERROR("short read: wanted %d bytes, got %zd\n",
> +				    rd->nsize - already, read);
>  			return -EIO;
> +		}
>  
>  		if (unlikely(err)) {
>  			JFFS2_ERROR("read remainder of name: error %d\n", err);
> -- 
> 1.7.1
>