[PATCHv8 bpf-next 27/29] selftests/bpf: Add tracing multi verifier fails test
From: Jiri Olsa <jolsa@kernel.org>
Date: 2026-06-06 12:44:33
Also in:
bpf
Subsystem:
bpf [general] (safe dynamic programs and tools), bpf [selftests] (test runners & infrastructure), kernel selftest framework, the rest · Maintainers:
Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, Shuah Khan, Linus Torvalds
Adding tests for verifier fails on tracing multi programs. Signed-off-by: Jiri Olsa <jolsa@kernel.org> --- .../selftests/bpf/prog_tests/tracing_multi.c | 2 ++ .../bpf/progs/tracing_multi_verifier.c | 31 +++++++++++++++++++ 2 files changed, 33 insertions(+) create mode 100644 tools/testing/selftests/bpf/progs/tracing_multi_verifier.c
diff --git a/tools/testing/selftests/bpf/prog_tests/tracing_multi.c b/tools/testing/selftests/bpf/prog_tests/tracing_multi.c
index 7e1bb071ce2a..9e026f2b254d 100644
--- 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
index 000000000000..7b6ed41bf452
--- /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; +}
--
2.54.0