On Mon, Jul 14, 2025 at 5:04 AM KaFai Wan mannkafai@gmail.com wrote:
The reuslt:
$ tools/testing/selftests/bpf/test_progs --name=tracing_deny #467/1 tracing_deny/migrate_disable:OK #467 tracing_deny:OK Summary: 1/1 PASSED, 0 SKIPPED, 0 FAILED
Signed-off-by: KaFai Wan mannkafai@gmail.com
.../selftests/bpf/prog_tests/tracing_deny.c | 11 +++++++++++ tools/testing/selftests/bpf/progs/tracing_deny.c | 15 +++++++++++++++ 2 files changed, 26 insertions(+) create mode 100644 tools/testing/selftests/bpf/prog_tests/tracing_deny.c create mode 100644 tools/testing/selftests/bpf/progs/tracing_deny.c
diff --git a/tools/testing/selftests/bpf/prog_tests/tracing_deny.c b/tools/testing/selftests/bpf/prog_tests/tracing_deny.c new file mode 100644 index 000000000000..460c59a9667f --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/tracing_deny.c @@ -0,0 +1,11 @@ +// SPDX-License-Identifier: GPL-2.0
+#include <test_progs.h> +#include "tracing_deny.skel.h"
+void test_tracing_deny(void) +{
/* migrate_disable depends on CONFIG_SMP */if (libbpf_find_vmlinux_btf_id("migrate_disable", BPF_TRACE_FENTRY) > 0)RUN_TESTS(tracing_deny);+} diff --git a/tools/testing/selftests/bpf/progs/tracing_deny.c b/tools/testing/selftests/bpf/progs/tracing_deny.c new file mode 100644 index 000000000000..98ef834f0b6d --- /dev/null +++ b/tools/testing/selftests/bpf/progs/tracing_deny.c @@ -0,0 +1,15 @@ +// SPDX-License-Identifier: GPL-2.0
+#include <linux/bpf.h> +#include <bpf/bpf_helpers.h> +#include <bpf/bpf_tracing.h> +#include "bpf_misc.h"
+char _license[] SEC("license") = "GPL";
+SEC("fentry/migrate_disable") +__failure __msg("Attaching tracing programs to function 'migrate_disable' is rejected.") +int BPF_PROG(migrate_disable) +{
return 0;+}
Please roll these two tiny files into existing files in progs/ and prog_tests/ directories. Every file takes time to compile 4 times, so let's avoid unnecessary overhead.
-- pw-bot: cr