Re: [Qemu-devel] [PATCH 1/4] nfs: Fix leak of opts in nfs_file_open

["Benoît Canet" <benoit.canet@irqsave.net>]

The Wednesday 27 Aug 2014 à 14:02:33 (+0800), Fam Zheng wrote :
> Signed-off-by: Fam Zheng <famz@redhat.com>
> ---
>  block/nfs.c | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/block/nfs.c b/block/nfs.c
> index 93d87f3..36e8057 100644
> --- a/block/nfs.c
> +++ b/block/nfs.c
> @@ -393,15 +393,18 @@ static int nfs_file_open(BlockDriverState *bs, QDict *options, int flags,
>      qemu_opts_absorb_qdict(opts, options, &local_err);
>      if (local_err) {
>          error_propagate(errp, local_err);
> -        return -EINVAL;
> +        ret = -EINVAL;

1)

Here you put the return code in ret and goto out.

> +        goto out;
>      }
>      ret = nfs_client_open(client, qemu_opt_get(opts, "filename"),
>                            (flags & BDRV_O_RDWR) ? O_RDWR : O_RDONLY,
>                            errp);
>      if (ret < 0) {
> -        return ret;
> +        goto out;

2) here you seem to want to do something later with the value of ret.

>      }
>      bs->total_sectors = ret;
> +out:
> +    qemu_opts_del(opts);

>      return 0;

Here the code simply return 0 discarding the return code you set in 1) and 2).

>  }
>  
> -- 
> 2.1.0
> 
>