selftests/seccomp: Set NNP for TSYNC ESRCH flag test

The TSYNC ESRCH flag test will fail for regular users because NNP was
not set yet. Add NNP setting.

Fixes: 51891498f2da ("seccomp: allow TSYNC and USER_NOTIF together")
Cc: stable@vger.kernel.org
Reviewed-by: Tycho Andersen <tycho@tycho.ws>
Signed-off-by: Kees Cook <keescook@chromium.org>

diff --git a/tools/testing/selftests/seccomp/seccomp_bpf.c b/tools/testing/selftests/seccomp/seccomp_bpf.c
index 8022311..c8f93ed 100644 (file)
--- a/tools/testing/selftests/seccomp/seccomp_bpf.c
+++ b/tools/testing/selftests/seccomp/seccomp_bpf.c
@@ -3262,6 +3262,11 @@ TEST(user_notification_with_tsync)
        int ret;
        unsigned int flags;
 
+       ret = prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0);
+       ASSERT_EQ(0, ret) {
+               TH_LOG("Kernel does not support PR_SET_NO_NEW_PRIVS!");
+       }
+
        /* these were exclusive */
        flags = SECCOMP_FILTER_FLAG_NEW_LISTENER |
                SECCOMP_FILTER_FLAG_TSYNC;