linux-kernel - [PATCH 5.9 039/757] mptcp: initialize mptcp_options

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Date:   Tue, 27 Oct 2020 14:44:49 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Geliang Tang <geliangtang@...il.com>,
        Matthieu Baerts <matthieu.baerts@...sares.net>,
        Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH 5.9 039/757] mptcp: initialize mptcp_options_receiveds ahmac

From: Geliang Tang <geliangtang@...il.com>

[ 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@...il.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@...sares.net>
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 net/mptcp/options.c |    1 +
 1 file changed, 1 insertion(+)

--- a/net/mptcp/options.c
+++ b/net/mptcp/options.c
@@ -296,6 +296,7 @@ void mptcp_get_options(const struct sk_b
 	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;