Paolo Abeni 337cebbd85 mptcp: really cope with fastopen race ... Fastopen and PM-trigger subflow shutdown can race, as reported by syzkaller. In my first attempt to close such race, I missed the fact that the subflow status can change again before the subflow_state_change callback is invoked. Address the issue additionally copying with all the states directly reachable from TCP_FIN_WAIT1. Fixes: 1e777f39b4 ("mptcp: add MSG_FASTOPEN sendmsg flag support") Fixes: 4fd19a3070 ("mptcp: fix inconsistent state on fastopen race") Cc: stable@vger.kernel.org Reported-by: syzbot+c53d4d3ddb327e80bc51@syzkaller.appspotmail.com Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/458 Signed-off-by: Paolo Abeni <pabeni@redhat.com> Reviewed-by: Mat Martineau <martineau@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>		2024-02-12 10:08:13 +00:00
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bpf.c
crypto.c
crypto_test.c	mptcp: fill in missing MODULE_DESCRIPTION()	2023-12-17 20:54:22 +00:00
ctrl.c
diag.c
fastopen.c	mptcp: corner case locking for rx path fields initialization	2024-02-12 10:08:13 +00:00
Kconfig
Makefile
mib.c	mptcp: add CurrEstab MIB counter support	2024-01-02 13:32:45 +00:00
mib.h	mptcp: add CurrEstab MIB counter support	2024-01-02 13:32:45 +00:00
mptcp_diag.c
mptcp_pm_gen.c
mptcp_pm_gen.h
options.c	mptcp: corner case locking for rx path fields initialization	2024-02-12 10:08:13 +00:00
pm.c
pm_netlink.c	mptcp: use mptcp_set_state	2024-01-02 13:33:33 +00:00
pm_userspace.c	mptcp: check addrs list in userspace_pm_get_local_id	2024-02-12 10:08:13 +00:00
protocol.c	mptcp: corner case locking for rx path fields initialization	2024-02-12 10:08:13 +00:00
protocol.h	mptcp: really cope with fastopen race	2024-02-12 10:08:13 +00:00
sched.c
sockopt.c	mptcp: sockopt: support IP_LOCAL_PORT_RANGE and IP_BIND_ADDRESS_NO_PORT	2023-12-26 22:33:21 +00:00
subflow.c	mptcp: corner case locking for rx path fields initialization	2024-02-12 10:08:13 +00:00
syncookies.c
token.c
token_test.c	mptcp: fill in missing MODULE_DESCRIPTION()	2023-12-17 20:54:22 +00:00