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[net,0/2] mptcp: mptcp: fix deadlock in mptcp{,6}_release

Message ID cover.1617295578.git.pabeni@redhat.com
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Series mptcp: mptcp: fix deadlock in mptcp{,6}_release | expand

Message

Paolo Abeni April 1, 2021, 4:57 p.m. UTC
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(-)