mptcp: initialize mptcp_options_received's ahmac

[ Upstream commit fe2d9b1a0e7805384770ec0ddd34c9f1e9fe6fa8 ]

Initialize mptcp_options_received's ahmac to zero, otherwise it
will be a random number when receiving ADD_ADDR suboption with echo-flag=1.

Fixes: 3df523ab582c5 ("mptcp: Add ADD_ADDR handling")
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/mptcp/options.c b/net/mptcp/options.c
index 77d46cc8165bc8148751f014a75ce5705d53fc42..430a9213a7bf9d71fccdd5c38274b30b66690319 100644 (file)
--- a/net/mptcp/options.c
+++ b/net/mptcp/options.c
@@ -296,6 +296,7 @@ void mptcp_get_options(const struct sk_buff *skb,
        mp_opt->mp_capable = 0;
        mp_opt->mp_join = 0;
        mp_opt->add_addr = 0;
+       mp_opt->ahmac = 0;
        mp_opt->rm_addr = 0;
        mp_opt->dss = 0;