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mptcp: drop unconditional pr_warn on bad opt

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commit 3812ce8950 upstream.

This is a left-over of early day. A malicious peer can flood
the kernel logs with useless messages, just drop it.

Fixes: f296234c98 ("mptcp: Add handling of incoming MP_JOIN requests")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Paolo Abeni 2021-05-25 14:23:11 -07:00 • committed by Greg Kroah-Hartman
commit deeb7d84f2
1 changed files with 0 additions and 1 deletions
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net/mptcp/options.c
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@ -127,7 +127,6 @@ static void mptcp_parse_option(const struct sk_buff *skb,
memcpy(mp_opt->hmac, ptr, MPTCPOPT_HMAC_LEN);
pr_debug("MP_JOIN hmac");
} else {
pr_warn("MP_JOIN bad option size");
mp_opt->mp_join = 0;
}
break;