Applied (with a Fixes tag), thanks!
On Fri, Jul 10, 2026 at 10:16:42AM +0200, Thomas Huth wrote:
> From: Thomas Huth <[email protected]>
>
> MSG_OOB might be disabled in the kernel for unix sockets (by not
> selecting CONFIG_AF_UNIX_OOB), and in this case the related tests
> of the scoped_signal_test are currently failing. Add a runtime
> probe using socketpair() to detect MSG_OOB support and skip the
> test gracefully if it is unavailable.
>
> Signed-off-by: Thomas Huth <[email protected]>
> ---
> .../selftests/landlock/scoped_signal_test.c | 21 +++++++++++++++++++
> 1 file changed, 21 insertions(+)
>
> diff --git a/tools/testing/selftests/landlock/scoped_signal_test.c
> b/tools/testing/selftests/landlock/scoped_signal_test.c
> index 58d25157fe781..3cf20d769f2bc 100644
> --- a/tools/testing/selftests/landlock/scoped_signal_test.c
> +++ b/tools/testing/selftests/landlock/scoped_signal_test.c
> @@ -398,6 +398,24 @@ static int setup_signal_handler(int signal)
> return sigaction(SIGURG, &sa, NULL);
> }
>
> +/*
> + * MSG_OOB might be disabled in the kernel via the CONFIG_AF_UNIX_OOB
> + * switch, so this function can be used for probing for its availability.
> + */
> +static bool has_af_unix_oob(void)
> +{
> + bool available = false;
> + int sp[2];
> +
> + if (socketpair(AF_UNIX, SOCK_STREAM, 0, sp) == 0) {
> + available = (send(sp[0], ".", 1, MSG_OOB) == 1);
> + close(sp[0]);
> + close(sp[1]);
> + }
> +
> + return available;
> +}
> +
> /* clang-format off */
> FIXTURE(fown) {};
> /* clang-format on */
> @@ -460,6 +478,9 @@ TEST_F(fown, sigurg_socket)
> int pipe_parent[2], pipe_child[2];
> pid_t child;
>
> + if (!has_af_unix_oob())
> + SKIP(return, "CONFIG_AF_UNIX_OOB / MSG_OOB not available");
> +
> memset(&server_address, 0, sizeof(server_address));
> set_unix_address(&server_address, 0);
>
> --
> 2.55.0
>
>
