5.15-stable review patch. If anyone has any objections, please let me know.
------------------
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,