Required by switch_timens() to open /proc/self/ns/time_for_children.

CONFIG_GENERIC_VDSO_TIME_NS is not available on UML, so pidfd_setns_test
cannot be run successfully on this architecture.

Cc: Christian Brauner <brauner@kernel.org>
Cc: Shuah Khan <skhan@linuxfoundation.org>
Fixes: 2b40c5db73e2 ("selftests/pidfd: add pidfd setns tests")
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Link: https://lore.kernel.org/r/20240426172252.1862930-2-mic@digikod.net
---
 tools/testing/selftests/pidfd/config | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/testing/selftests/pidfd/config b/tools/testing/selftests/pidfd/config
index f6f2965e17af..6133524710f7 100644
--- a/tools/testing/selftests/pidfd/config
+++ b/tools/testing/selftests/pidfd/config
@@ -3,5 +3,7 @@ CONFIG_IPC_NS=y
 CONFIG_USER_NS=y
 CONFIG_PID_NS=y
 CONFIG_NET_NS=y
+CONFIG_TIME_NS=y
+CONFIG_GENERIC_VDSO_TIME_NS=y
 CONFIG_CGROUPS=y
 CONFIG_CHECKPOINT_RESTORE=y
-- 
2.44.0

On Fri, Apr 26, 2024 at 07:22:48PM +0200, Mickaël Salaün wrote:
> Required by switch_timens() to open /proc/self/ns/time_for_children.
> 
> CONFIG_GENERIC_VDSO_TIME_NS is not available on UML, so pidfd_setns_test
> cannot be run successfully on this architecture.
> 
> Cc: Christian Brauner <brauner@kernel.org>
> Cc: Shuah Khan <skhan@linuxfoundation.org>
> Fixes: 2b40c5db73e2 ("selftests/pidfd: add pidfd setns tests")
> Signed-off-by: Mickaël Salaün <mic@digikod.net>

Ah, UML continues to be a bit weird. :)

Reviewed-by: Kees Cook <keescook@chromium.org>

-- 
Kees Cook