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Date: Wed, 26 Feb 2020 20:50:10 -0800 (PST) From: David Miller <davem@...emloft.net> To: pabeni@...hat.com Cc: netdev@...r.kernel.org, paul@...l-moore.com, syzkaller-bugs@...glegroups.com, matthieu.baerts@...sares.net, mathew.j.martineau@...ux.intel.com Subject: Re: [PATCH net] mptcp: add dummy icsk_sync_mss() From: Paolo Abeni <pabeni@...hat.com> Date: Wed, 26 Feb 2020 12:19:03 +0100 > syzbot noted that the master MPTCP socket lacks the icsk_sync_mss > callback, and was able to trigger a null pointer dereference: ... > Address the issue adding a dummy icsk_sync_mss callback. > To properly sync the subflows mss and options list we need some > additional infrastructure, which will land to net-next. > > Reported-by: syzbot+f4dfece964792d80b139@...kaller.appspotmail.com > Fixes: 2303f994b3e1 ("mptcp: Associate MPTCP context with TCP socket") > Signed-off-by: Paolo Abeni <pabeni@...hat.com> Applied, thanks.
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