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Commit a07f388e authored by Sean Tranchetti's avatar Sean Tranchetti Committed by David S. Miller
Browse files

net: qualcomm: rmnet: Skip processing loopback packets 



RMNET RX handler was processing invalid packets that were
originally sent on the real device and were looped back via
dev_loopback_xmit(). This was detected using syzkaller.

Fixes: ceed73a2 ("drivers: net: ethernet: qualcomm: rmnet: Initial implementation")
Signed-off-by: default avatarSean Tranchetti <stranche@codeaurora.org>
Signed-off-by: default avatarSubash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 45ec3185

drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c

+3 −0
Original line number Diff line number Diff line
@@ -189,6 +189,9 @@ rx_handler_result_t rmnet_rx_handler(struct sk_buff **pskb) 
	if (!skb)

		goto done;



	if (skb->pkt_type == PACKET_LOOPBACK)

		return RX_HANDLER_PASS;



	dev = skb->dev;

	port = rmnet_get_port(dev);