selftests/bpf: Add tracing multi verifier fails test

Adding tests for verifier fails on tracing multi programs.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20260606123955.345967-28-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

diff --git a/tools/testing/selftests/bpf/prog_tests/tracing_multi.c b/tools/testing/selftests/bpf/prog_tests/tracing_multi.c
index 7e1bb071ce2acc1b346b384e102bad334b6c4710..9e026f2b254d0b365a1073016e3ddae0cc30570c 100644 (file)
--- a/tools/testing/selftests/bpf/prog_tests/tracing_multi.c
+++ b/tools/testing/selftests/bpf/prog_tests/tracing_multi.c
@@ -9,6 +9,7 @@
 #include "tracing_multi_intersect.skel.h"
 #include "tracing_multi_session.skel.h"
 #include "tracing_multi_fail.skel.h"
+#include "tracing_multi_verifier.skel.h"
 #include "trace_helpers.h"
 
 static __u64 bpf_fentry_test_cookies[] = {
@@ -619,4 +620,5 @@ void test_tracing_multi_test(void)
                test_session();
        if (test__start_subtest("attach_api_fails"))
                test_attach_api_fails();
+       RUN_TESTS(tracing_multi_verifier);
 }

diff --git a/tools/testing/selftests/bpf/progs/tracing_multi_verifier.c b/tools/testing/selftests/bpf/progs/tracing_multi_verifier.c
new file mode 100644 (file)
index 0000000..7b6ed41
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/tracing_multi_verifier.c
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-2.0
+#include "vmlinux.h"
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+#include "bpf_misc.h"
+
+char _license[] SEC("license") = "GPL";
+
+SEC("fentry.multi/bpf_fentry_test1")
+__failure
+__msg("func 'bpf_multi_func' doesn't have 1-th argument")
+int BPF_PROG(fentry_direct_access, int a)
+{
+       return a;
+}
+
+SEC("fexit.multi/bpf_fentry_test3")
+__failure
+__msg("invalid bpf_context access off=24 size=8")
+int BPF_PROG(fexit_direct_access, char a, int b, __u64 c, int ret)
+{
+       return ret;
+}
+
+SEC("fsession.multi/bpf_fentry_test4")
+__failure
+__msg("invalid bpf_context access off=16 size=8")
+int BPF_PROG(fsession_direct_access, void *a, char b, int c, __u64 d, int ret)
+{
+       return c;
+}