Patch "selftests: mptcp: Initialize variables to quiet gcc 12 warnings" has been added to the 5.15-stable tree

[<gregkh@linuxfoundation.org>]

This is a note to let you know that I've just added the patch titled

    selftests: mptcp: Initialize variables to quiet gcc 12 warnings

to the 5.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     selftests-mptcp-initialize-variables-to-quiet-gcc-12-warnings.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


From stable+bounces-165649-greg=kroah.com@vger.kernel.org Thu Jul 31 13:24:27 2025
From: "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
Date: Thu, 31 Jul 2025 13:23:58 +0200
Subject: selftests: mptcp: Initialize variables to quiet gcc 12 warnings
To: mptcp@lists.linux.dev, stable@vger.kernel.org, gregkh@linuxfoundation.org
Cc: Mat Martineau <mathew.j.martineau@linux.intel.com>, sashal@kernel.org, Paolo Abeni <pabeni@redhat.com>, Jakub Kicinski <kuba@kernel.org>, "Matthieu Baerts (NGI0)" <matttbe@kernel.org>
Message-ID: <20250731112353.2638719-12-matttbe@kernel.org>

From: Mat Martineau <mathew.j.martineau@linux.intel.com>

commit fd37c2ecb21f7aee04ccca5f561469f07d00063c upstream.

In a few MPTCP selftest tools, gcc 12 complains that the 'sock' variable
might be used uninitialized. This is a false positive because the only
code path that could lead to uninitialized access is where getaddrinfo()
fails, but the local xgetaddrinfo() wrapper exits if such a failure
occurs.

Initialize the 'sock' variable anyway to allow the tools to build with
gcc 12.

Fixes: 048d19d444be ("mptcp: add basic kselftest for mptcp")
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
[ mptcp_inq.c and mptcp_sockopt.c are not in this version. The fix can
  still be applied in mptcp_connect.c without conflicts. ]
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 tools/testing/selftests/net/mptcp/mptcp_connect.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/tools/testing/selftests/net/mptcp/mptcp_connect.c
+++ b/tools/testing/selftests/net/mptcp/mptcp_connect.c
@@ -188,7 +188,7 @@ static void set_mark(int fd, uint32_t ma
 static int sock_listen_mptcp(const char * const listenaddr,
 			     const char * const port)
 {
-	int sock;
+	int sock = -1;
 	struct addrinfo hints = {
 		.ai_protocol = IPPROTO_TCP,
 		.ai_socktype = SOCK_STREAM,


Patches currently in stable-queue which might be from matttbe@kernel.org are

queue-5.15/mptcp-drop-unused-sk-in-mptcp_push_release.patch
queue-5.15/selftests-mptcp-connect-also-cover-alt-modes.patch
queue-5.15/mptcp-drop-skb-if-mptcp-skb-extension-allocation-fails.patch
queue-5.15/selftests-mptcp-connect-also-cover-checksum.patch
queue-5.15/selftests-mptcp-make-sendfile-selftest-work.patch
queue-5.15/selftests-mptcp-initialize-variables-to-quiet-gcc-12-warnings.patch
queue-5.15/mptcp-pm-kernel-flush-do-not-reset-add_addr-limit.patch
queue-5.15/mptcp-do-not-queue-data-on-closed-subflows.patch
queue-5.15/selftests-mptcp-add-missing-join-check.patch
queue-5.15/mptcp-fix-error-mibs-accounting.patch
queue-5.15/mptcp-introduce-mapping_bad_csum.patch