Re: [Qemu-devel] [PATCH] net/socket: fix coverity issue

[Jason Wang <jasowang@redhat.com>]

On 2017年11月06日 21:28, Jens Freimann wrote:
> This fixes coverity issue CID1005339.
>
> Make sure that saddr is not used uninitialized if the
> mcast parameter is NULL.
>
> Cc: qemu-stable@nongnu.org
> Reported-by: Peter Maydell <peter.maydell@linaro.org>
> Signed-off-by: Jens Freimann <jfreimann@redhat.com>
> ---
>   net/socket.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/net/socket.c b/net/socket.c
> index e6b471c63d..51eaea67a0 100644
> --- a/net/socket.c
> +++ b/net/socket.c
> @@ -332,7 +332,7 @@ static NetSocketState *net_socket_fd_init_dgram(NetClientState *peer,
>                                                   const char *mcast,
>                                                   Error **errp)
>   {
> -    struct sockaddr_in saddr;
> +    struct sockaddr_in saddr = { 0 };
>       int newfd;
>       NetClientState *nc;
>       NetSocketState *s;
> @@ -373,7 +373,7 @@ static NetSocketState *net_socket_fd_init_dgram(NetClientState *peer,
>       net_socket_read_poll(s, true);
>   
>       /* mcast: save bound address as dst */
> -    if (is_connected) {
> +    if (is_connected && mcast != NULL) {
>           s->dgram_dst = saddr;
>           snprintf(nc->info_str, sizeof(nc->info_str),
>                    "socket: fd=%d (cloned mcast=%s:%d)",

Applied, thanks.