Re: [PATCH][next] can: fix resource leak of skb on error return paths

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Wed, Sep 18, 2019 at 11:11:56AM +0100, Colin King wrote:
> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> 
> Currently the error return paths do not free skb and this results
> in a memory leak. Fix this by freeing them before the return.
> 
> Addresses-Coverity: ("Resource leak")
> Fixes: 9d71dd0c7009 ("can: add support of SAE J1939 protocol")
> Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>

Acked-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>

> ---
>  net/can/j1939/socket.c | 8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/net/can/j1939/socket.c b/net/can/j1939/socket.c
> index 37c1040bcb9c..5c6eabcb5df1 100644
> --- a/net/can/j1939/socket.c
> +++ b/net/can/j1939/socket.c
> @@ -909,8 +909,10 @@ void j1939_sk_errqueue(struct j1939_session *session,
>  	memset(serr, 0, sizeof(*serr));
>  	switch (type) {
>  	case J1939_ERRQUEUE_ACK:
> -		if (!(sk->sk_tsflags & SOF_TIMESTAMPING_TX_ACK))
> +		if (!(sk->sk_tsflags & SOF_TIMESTAMPING_TX_ACK)) {
> +			kfree_skb(skb);
>  			return;
> +		}
>  
>  		serr->ee.ee_errno = ENOMSG;
>  		serr->ee.ee_origin = SO_EE_ORIGIN_TIMESTAMPING;
> @@ -918,8 +920,10 @@ void j1939_sk_errqueue(struct j1939_session *session,
>  		state = "ACK";
>  		break;
>  	case J1939_ERRQUEUE_SCHED:
> -		if (!(sk->sk_tsflags & SOF_TIMESTAMPING_TX_SCHED))
> +		if (!(sk->sk_tsflags & SOF_TIMESTAMPING_TX_SCHED)) {
> +			kfree_skb(skb);
>  			return;
> +		}
>  
>  		serr->ee.ee_errno = ENOMSG;
>  		serr->ee.ee_origin = SO_EE_ORIGIN_TIMESTAMPING;
> -- 
> 2.20.1
> 
> 

-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |



[Index of Archives]     [Automotive Discussions]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Security]     [Bugtraq]     [Linux]     [Linux OMAP]     [Linux MIPS]     [eCos]     [Asterisk Internet PBX]     [Linux API]     [CAN Bus]

  Powered by Linux