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| author | Gang Yan <yangang@kylinos.cn> | 2026-04-27 21:54:33 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-04-28 18:36:27 -0700 |
| commit | 5f95c21fc23a7ef22b4d27d1ed9bb55557ffb926 (patch) | |
| tree | a83dfab44bf6e0f9bbb5008e1fec7ed8c776b170 /net/mptcp/sockopt.c | |
| parent | 21a7bb5cde5585aded53a47f21d6534d7da2ae48 (diff) | |
| download | linux-next-5f95c21fc23a7ef22b4d27d1ed9bb55557ffb926.tar.gz linux-next-5f95c21fc23a7ef22b4d27d1ed9bb55557ffb926.zip | |
mptcp: sockopt: set timestamp flags on subflow socket, not msk
Both mptcp_setsockopt_sol_socket_tstamp() and
mptcp_setsockopt_sol_socket_timestamping() iterate over subflows,
acquire the subflow socket lock, but then erroneously pass the MPTCP
msk socket to sock_set_timestamp() / sock_set_timestamping() instead
of the subflow ssk. As a result, the timestamp flags are set on the
wrong socket and have no effect on the actual subflows.
Pass ssk instead of sk to both helpers.
Fixes: 9061f24bf82e ("mptcp: sockopt: propagate timestamp request to subflows")
Cc: stable@vger.kernel.org
Signed-off-by: Gang Yan <yangang@kylinos.cn>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20260427-net-mptcp-misc-fixes-7-1-rc2-v1-1-7432b7f279fa@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/mptcp/sockopt.c')
| -rw-r--r-- | net/mptcp/sockopt.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/mptcp/sockopt.c b/net/mptcp/sockopt.c index de90a2897d2d..79db15903e7a 100644 --- a/net/mptcp/sockopt.c +++ b/net/mptcp/sockopt.c @@ -161,7 +161,7 @@ static int mptcp_setsockopt_sol_socket_tstamp(struct mptcp_sock *msk, int optnam struct sock *ssk = mptcp_subflow_tcp_sock(subflow); bool slow = lock_sock_fast(ssk); - sock_set_timestamp(sk, optname, !!val); + sock_set_timestamp(ssk, optname, !!val); unlock_sock_fast(ssk, slow); } @@ -237,7 +237,7 @@ static int mptcp_setsockopt_sol_socket_timestamping(struct mptcp_sock *msk, struct sock *ssk = mptcp_subflow_tcp_sock(subflow); bool slow = lock_sock_fast(ssk); - sock_set_timestamping(sk, optname, timestamping); + sock_set_timestamping(ssk, optname, timestamping); unlock_sock_fast(ssk, slow); } |