Re: [PATCH v2 net] l2tp: fix configuration passed to setup_udp_tunnel_sock()

From: Guillaume Nault <redacted>
Date: Wed, 8 Jun 2016 12:59:17 +0200

Unused fields of udp_cfg must be all zeros. Otherwise
setup_udp_tunnel_sock() fills ->gro_receive and ->gro_complete
callbacks with garbage, eventually resulting in panic when used by
udp_gro_receive().

 ...

v2: use empty initialiser instead of "{ NULL }" to avoid relying on
    first field's type.

Fixes: 38fd2af24fcf ("udp: Add socket based GRO and config")
Signed-off-by: Guillaume Nault <redacted>

Applied and queued up for -stable, thanks.