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can: grcan: don't touch skb after netif_rx()
authorMarc Kleine-Budde <mkl@pengutronix.de>
Sat, 11 Jul 2015 19:16:08 +0000 (21:16 +0200)
committerMarc Kleine-Budde <mkl@pengutronix.de>
Wed, 15 Jul 2015 07:04:27 +0000 (09:04 +0200)
commit83537b6fd6c3752bcb578d2bd46312d1e2c4a73a
tree8c2dd4ded1e212e2190bdbb8adddb348cc54ae4ftree | snapshot
parent20926d79244de4e9c698ae429fdc1e7e5832b081commit | diff
can: grcan: 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: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
drivers/net/can/grcan.c diff | blob | history
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