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Merge branch 'mptcp-misc-fixes-for-6-15-rc0'

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Matthieu Baerts says:

====================
mptcp: misc. fixes for 6.15-rc0

Here are 4 unrelated patches:

- Patch 1: fix a NULL pointer when two SYN-ACK for the same request are
  handled in parallel. A fix for up to v5.9.

- Patch 2: selftests: fix check for the wrong FD. A fix for up to v5.17.

- Patch 3: selftests: close all FDs in case of error. A fix for up to
  v5.17.

- Patch 4: selftests: ignore a new generated file. A fix for 6.15-rc0.
====================

Link: https://patch.msgid.link/20250328-net-mptcp-misc-fixes-6-15-v1-0-34161a482a7f@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jakub Kicinski 2025-03-31 16:52:42 -07:00
commit 0a541eaff5
3 changed files with 16 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
net/mptcp/subflow.c
View File

@ -754,8 +754,6 @@ static bool subflow_hmac_valid(const struct request_sock *req,
subflow_req = mptcp_subflow_rsk(req);
msk = subflow_req->msk;
if (!msk)
return false;
subflow_generate_hmac(READ_ONCE(msk->remote_key),
READ_ONCE(msk->local_key),
@ -850,12 +848,8 @@ static struct sock *subflow_syn_recv_sock(const struct sock *sk,
} else if (subflow_req->mp_join) {
mptcp_get_options(skb, &mp_opt);
if (!(mp_opt.suboptions & OPTION_MPTCP_MPJ_ACK) ||
!subflow_hmac_valid(req, &mp_opt) ||
!mptcp_can_accept_new_subflow(subflow_req->msk)) {
SUBFLOW_REQ_INC_STATS(req, MPTCP_MIB_JOINACKMAC);
if (!(mp_opt.suboptions & OPTION_MPTCP_MPJ_ACK))
fallback = true;
}
}
create_child:
@ -905,6 +899,13 @@ static struct sock *subflow_syn_recv_sock(const struct sock *sk,
goto dispose_child;
}
if (!subflow_hmac_valid(req, &mp_opt) ||
!mptcp_can_accept_new_subflow(subflow_req->msk)) {
SUBFLOW_REQ_INC_STATS(req, MPTCP_MIB_JOINACKMAC);
subflow_add_reset_reason(skb, MPTCP_RST_EPROHIBIT);
goto dispose_child;
}
/* move the msk reference ownership to the subflow */
subflow_req->msk = NULL;
ctx->conn = (struct sock *)owner;

1
tools/testing/selftests/net/mptcp/.gitignore vendored
View File

@ -1,5 +1,6 @@
# SPDX-License-Identifier: GPL-2.0-only
mptcp_connect
mptcp_diag
mptcp_inq
mptcp_sockopt
pm_nl_ctl

11
tools/testing/selftests/net/mptcp/mptcp_connect.c
View File

@ -1270,7 +1270,7 @@ int main_loop(void)
if (cfg_input && cfg_sockopt_types.mptfo) {
fd_in = open(cfg_input, O_RDONLY);
if (fd < 0)
if (fd_in < 0)
xerror("can't open %s:%d", cfg_input, errno);
}
@ -1293,13 +1293,13 @@ int main_loop(void)
if (cfg_input && !cfg_sockopt_types.mptfo) {
fd_in = open(cfg_input, O_RDONLY);
if (fd < 0)
if (fd_in < 0)
xerror("can't open %s:%d", cfg_input, errno);
}
ret = copyfd_io(fd_in, fd, 1, 0, &winfo);
if (ret)
return ret;
goto out;
if (cfg_truncate > 0) {
shutdown(fd, SHUT_WR);
@ -1320,7 +1320,10 @@ int main_loop(void)
close(fd);
}
return 0;
out:
if (cfg_input)
close(fd_in);
return ret;
}
int parse_proto(const char *proto)