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can: add missing initialisations in CAN related skbuffs

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When accessing CAN network interfaces with AF_PACKET sockets e.g. by dhclient
this can lead to a skb_under_panic due to missing skb initialisations.

Add the missing initialisations at the CAN skbuff creation times on driver
level (rx path) and in the network layer (tx path).

Reported-by: Austin Schuh <austin@peloton-tech.com>
Reported-by: Daniel Steer <daniel.steer@mclaren.com>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Oliver Hartkopp
2015-02-23 20:37:54 +01:00
committed by Marc Kleine-Budde
parent c247f0534c
commit 969439016d
2 changed files with 11 additions and 0 deletions
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3
net/can/af_can.c
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@@ -259,6 +259,9 @@ int can_send(struct sk_buff *skb, int loop)
goto inval_skb;
}
skb->ip_summed = CHECKSUM_UNNECESSARY;
skb_reset_mac_header(skb);
skb_reset_network_header(skb);
skb_reset_transport_header(skb);