syzkaller has reported a few deadlock triggered by
mptcp{,6}_release.
These patches address the issue in the easy way - blocking
the relevant, multicast related, sockopt options on MPTCP
sockets.
Note that later on net-next we are going to revert patch 1/2,
as a part of a larger MPTCP sockopt implementation refactor
Paolo Abeni (2):
mptcp: forbit mcast-related sockopt on MPTCP sockets
mptcp: revert "mptcp: provide subflow aware release function"
net/mptcp/protocol.c | 100 ++++++++++++++++++++-----------------------
1 file changed, 47 insertions(+), 53 deletions(-)
--
2.26.2
