tree fa92f82c1a73fff746e78a0dd99b1c882ebea0f1
parent 890fefa2d24d4c653b1b425127488a7f8c14ff5c
author Stephen Suryaputra <ssuryaextr@gmail.com> 1638289597 -0500
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1638949506 +0100

vrf: Reset IPCB/IP6CB when processing outbound pkts in vrf dev xmit

commit ee201011c1e1563c114a55c86eb164b236f18e84 upstream.

IPCB/IP6CB need to be initialized when processing outbound v4 or v6 pkts
in the codepath of vrf device xmit function so that leftover garbage
doesn't cause futher code that uses the CB to incorrectly process the
pkt.

One occasion of the issue might occur when MPLS route uses the vrf
device as the outgoing device such as when the route is added using "ip
-f mpls route add <label> dev <vrf>" command.

The problems seems to exist since day one. Hence I put the day one
commits on the Fixes tags.

Fixes: 193125dbd8eb ("net: Introduce VRF device driver")
Fixes: 35402e313663 ("net: Add IPv6 support to VRF device")
Cc: stable@vger.kernel.org
Signed-off-by: Stephen Suryaputra <ssuryaextr@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20211130162637.3249-1-ssuryaextr@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>