linux-stable/net/mptcp
Paolo Abeni cee4034a3d mptcp: fix lockdep false positive in mptcp_pm_nl_create_listen_socket()
Christoph reports a lockdep splat in the mptcp_subflow_create_socket()
error path, when such function is invoked by
mptcp_pm_nl_create_listen_socket().

Such code path acquires two separates, nested socket lock, with the
internal lock operation lacking the "nested" annotation. Adding that
in sock_release() for mptcp's sake only could be confusing.

Instead just add a new lockclass to the in-kernel msk socket,
re-initializing the lockdep infra after the socket creation.

Fixes: ad2171009d ("mptcp: fix locking for in-kernel listener creation")
Cc: stable@vger.kernel.org
Reported-by: Christoph Paasch <cpaasch@apple.com>
Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/354
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Tested-by: Christoph Paasch <cpaasch@apple.com>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-03-10 21:42:56 -08:00
..
bpf.c
crypto.c
crypto_test.c
ctrl.c
diag.c
fastopen.c mptcp: add subflow_v(4,6)_send_synack() 2022-11-29 20:24:25 -08:00
Kconfig
Makefile mptcp: implement delayed seq generation for passive fastopen 2022-11-29 20:24:25 -08:00
mib.c
mib.h
mptcp_diag.c tcp: Access &tcp_hashinfo via net. 2022-09-20 10:21:49 -07:00
options.c mptcp: use local variable ssk in write_options 2023-01-09 07:30:49 +00:00
pm.c mptcp: netlink: respect v4/v6-only sockets 2023-01-13 21:55:45 -08:00
pm_netlink.c mptcp: fix lockdep false positive in mptcp_pm_nl_create_listen_socket() 2023-03-10 21:42:56 -08:00
pm_userspace.c mptcp: userspace pm: use a single point of exit 2023-01-26 13:33:30 +01:00
protocol.c mptcp: fix UaF in listener shutdown 2023-03-10 21:42:56 -08:00
protocol.h mptcp: fix UaF in listener shutdown 2023-03-10 21:42:56 -08:00
sockopt.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-02-09 12:25:40 -08:00
subflow.c mptcp: avoid setting TCP_CLOSE state twice 2023-03-10 21:42:56 -08:00
syncookies.c
token.c mptcp: add statistics for mptcp socket in use 2023-01-09 07:30:50 +00:00
token_test.c mptcp: init sk->sk_prot in build_msk() 2023-01-09 07:30:50 +00:00