tree 3b6f4a830c4b3cd683ce7f3239e0475c0e71f23e
parent e346e231b42bcae6822a6326acfb7b741e9e6026
author Richard Gobert <richardbgobert@gmail.com> 1690472036 +0200
committer David S. Miller <davem@davemloft.net> 1690647027 +0100

net: gro: fix misuse of CB in udp socket lookup

This patch fixes a misuse of IP{6}CB(skb) in GRO, while calling to
`udp6_lib_lookup2` when handling udp tunnels. `udp6_lib_lookup2` fetch the
device from CB. The fix changes it to fetch the device from `skb->dev`.
l3mdev case requires special attention since it has a master and a slave
device.

Fixes: a6024562ffd7 ("udp: Add GRO functions to UDP socket")
Reported-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Richard Gobert <richardbgobert@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>