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selftests/bpf: Migrate fexit_noreturns case into tracing_failure test suite

Browse Source 
Delete fexit_noreturns.c files and migrate the cases into
tracing_failure.c files.

The result:

 $ tools/testing/selftests/bpf/test_progs -t tracing_failure/fexit_noreturns
 #467/4   tracing_failure/fexit_noreturns:OK
 #467     tracing_failure:OK
 Summary: 1/1 PASSED, 0 SKIPPED, 0 FAILED

Signed-off-by: KaFai Wan <kafai.wan@linux.dev>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20250724151454.499040-5-kafai.wan@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
KaFai Wan 2025-07-24 23:14:54 +08:00 committed by Alexei Starovoitov
parent a32f6f17a7
commit 51d3750aba
4 changed files with 42 additions and 41 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
tools/testing/selftests/bpf/prog_tests/fexit_noreturns.c
View File

@ -1,9 +0,0 @@
// SPDX-License-Identifier: GPL-2.0
#include <test_progs.h>
#include "fexit_noreturns.skel.h"
void test_fexit_noreturns(void)
{
RUN_TESTS(fexit_noreturns);
}

53
tools/testing/selftests/bpf/prog_tests/tracing_failure.c
View File

@ -28,11 +28,36 @@ static void test_bpf_spin_lock(bool is_spin_lock)
tracing_failure__destroy(skel);
}
static void test_tracing_deny(void)
static void test_tracing_fail_prog(const char *prog_name, const char *exp_msg)
{
struct tracing_failure *skel;
struct bpf_program *prog;
char log_buf[256];
int btf_id, err;
int err;
skel = tracing_failure__open();
if (!ASSERT_OK_PTR(skel, "tracing_failure__open"))
return;
prog = bpf_object__find_program_by_name(skel->obj, prog_name);
if (!ASSERT_OK_PTR(prog, "bpf_object__find_program_by_name"))
goto out;
bpf_program__set_autoload(prog, true);
bpf_program__set_log_buf(prog, log_buf, sizeof(log_buf));
err = tracing_failure__load(skel);
if (!ASSERT_ERR(err, "tracing_failure__load"))
goto out;
ASSERT_HAS_SUBSTR(log_buf, exp_msg, "log_buf");
out:
tracing_failure__destroy(skel);
}
static void test_tracing_deny(void)
{
int btf_id;
/* __rcu_read_lock depends on CONFIG_PREEMPT_RCU */
btf_id = libbpf_find_vmlinux_btf_id("__rcu_read_lock", BPF_TRACE_FENTRY);
@ -41,22 +66,14 @@ static void test_tracing_deny(void)
return;
}
skel = tracing_failure__open();
if (!ASSERT_OK_PTR(skel, "tracing_failure__open"))
return;
test_tracing_fail_prog("tracing_deny",
"Attaching tracing programs to function '__rcu_read_lock' is rejected.");
}
bpf_program__set_autoload(skel->progs.tracing_deny, true);
bpf_program__set_log_buf(skel->progs.tracing_deny, log_buf, sizeof(log_buf));
err = tracing_failure__load(skel);
if (!ASSERT_ERR(err, "tracing_failure__load"))
goto out;
ASSERT_HAS_SUBSTR(log_buf,
"Attaching tracing programs to function '__rcu_read_lock' is rejected.",
"log_buf");
out:
tracing_failure__destroy(skel);
static void test_fexit_noreturns(void)
{
test_tracing_fail_prog("fexit_noreturns",
"Attaching fexit/fmod_ret to __noreturn function 'do_exit' is rejected.");
}
void test_tracing_failure(void)
@ -67,4 +84,6 @@ void test_tracing_failure(void)
test_bpf_spin_lock(false);
if (test__start_subtest("tracing_deny"))
test_tracing_deny();
if (test__start_subtest("fexit_noreturns"))
test_fexit_noreturns();
}

15
tools/testing/selftests/bpf/progs/fexit_noreturns.c
View File

@ -1,15 +0,0 @@
// 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("fexit/do_exit")
__failure __msg("Attaching fexit/fmod_ret to __noreturn function 'do_exit' is rejected.")
int BPF_PROG(noreturns)
{
return 0;
}

6
tools/testing/selftests/bpf/progs/tracing_failure.c
View File

@ -24,3 +24,9 @@ int BPF_PROG(tracing_deny)
{
return 0;
}
SEC("?fexit/do_exit")
int BPF_PROG(fexit_noreturns)
{
return 0;
}