diff options
| author |   Marc Kleine-Budde <mkl@pengutronix.de> | 2015-07-11 21:16:08 +0200 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2015-07-15 09:04:27 +0200 |
| commit | ef934e89f5e68535c447789b74de42cf389e55de (patch) | |
| tree | 6b06ca3615a7c66c81a5ee732d239fc76b26fdb2 /drivers/net/can/cc770 | |
| parent | can: ti_heccn: don't touch skb after netif_rx() (diff) | |
| download | linux-dev-ef934e89f5e68535c447789b74de42cf389e55de.tar.xz linux-dev-ef934e89f5e68535c447789b74de42cf389e55de.zip | |
can: cc770: don't touch skb after netif_rx()
There is no guarantee that the skb is in the same state after calling
net_receive_skb() or netif_rx(). It might be freed or reused. Not really
harmful as its a read access, except you turn on the proper debugging options
which catch a use after free.
Cc: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'drivers/net/can/cc770')
| -rw-r--r-- | drivers/net/can/cc770/cc770.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/can/cc770/cc770.c b/drivers/net/can/cc770/cc770.c index c11d44984036..70a8cbb29e75 100644 --- a/drivers/net/can/cc770/cc770.c +++ b/drivers/net/can/cc770/cc770.c @@ -504,10 +504,10 @@ static void cc770_rx(struct net_device *dev, unsigned int mo, u8 ctrl1) for (i = 0; i < cf->can_dlc; i++) cf->data[i] = cc770_read_reg(priv, msgobj[mo].data[i]); } - netif_rx(skb); stats->rx_packets++; stats->rx_bytes += cf->can_dlc; + netif_rx(skb); } static int cc770_err(struct net_device *dev, u8 status) @@ -584,10 +584,10 @@ static int cc770_err(struct net_device *dev, u8 status) } } - netif_rx(skb); stats->rx_packets++; stats->rx_bytes += cf->can_dlc; + netif_rx(skb); return 0; } |