diff options
| author | Ahmed S. Darwish <ahmed.darwish@valeo.com> | 2015-01-11 15:49:52 -0500 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2015-01-15 16:58:02 +0100 |
| commit | a58518ccf39f86f898a65201518dd8e799b3abeb (patch) | |
| tree | 3c42597cfdbb112cbeeddf0a94b2a79513a9b045 /drivers/net/can | |
| parent | 5e7e6e0c9b47a45576c38b4a72d67927a5e049f7 (diff) | |
can: kvaser_usb: Don't dereference skb after a netif_rx()
We should not touch the packet after a netif_rx: it might
get freed behind our back.
Suggested-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Ahmed S. Darwish <ahmed.darwish@valeo.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'drivers/net/can')
| -rw-r--r-- | drivers/net/can/usb/kvaser_usb.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/drivers/net/can/usb/kvaser_usb.c b/drivers/net/can/usb/kvaser_usb.c index cc7bfc0c0a71..c32cd61073bc 100644 --- a/drivers/net/can/usb/kvaser_usb.c +++ b/drivers/net/can/usb/kvaser_usb.c @@ -520,10 +520,10 @@ static void kvaser_usb_tx_acknowledge(const struct kvaser_usb *dev, skb = alloc_can_err_skb(priv->netdev, &cf); if (skb) { cf->can_id |= CAN_ERR_RESTARTED; - netif_rx(skb); stats->rx_packets++; stats->rx_bytes += cf->can_dlc; + netif_rx(skb); } else { netdev_err(priv->netdev, "No memory left for err_skb\n"); @@ -770,10 +770,9 @@ static void kvaser_usb_rx_error(const struct kvaser_usb *dev, priv->can.state = new_state; - netif_rx(skb); - stats->rx_packets++; stats->rx_bytes += cf->can_dlc; + netif_rx(skb); } static void kvaser_usb_rx_can_err(const struct kvaser_usb_net_priv *priv, @@ -805,10 +804,9 @@ static void kvaser_usb_rx_can_err(const struct kvaser_usb_net_priv *priv, stats->rx_over_errors++; stats->rx_errors++; - netif_rx(skb); - stats->rx_packets++; stats->rx_bytes += cf->can_dlc; + netif_rx(skb); } } @@ -887,10 +885,9 @@ static void kvaser_usb_rx_can_msg(const struct kvaser_usb *dev, cf->can_dlc); } - netif_rx(skb); - stats->rx_packets++; stats->rx_bytes += cf->can_dlc; + netif_rx(skb); } static void kvaser_usb_start_chip_reply(const struct kvaser_usb *dev, |