diff options
| author | Jiri Olsa <jolsa@redhat.com> | 2021-07-14 12:44:00 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2021-07-16 03:59:23 +0300 |
| commit | 8237e75420897a4bf9b38b67cd243331bbd96a01 (patch) | |
| tree | 4c31210d0e19c5a633a6ebc298aa7aa63485fb58 /tools | |
| parent | a2488b5f483f18e6e34be2a15eb4a79f4a0d8728 (diff) | |
| download | linux-8237e75420897a4bf9b38b67cd243331bbd96a01.tar.xz | |
selftests/bpf: Add test for bpf_get_func_ip in kprobe+offset probe
Adding test for bpf_get_func_ip in kprobe+ofset probe.
Because of the offset value it's arch specific, enabling
the new test only for x86_64 architecture.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210714094400.396467-9-jolsa@kernel.org
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/get_func_ip_test.c | 18 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/progs/get_func_ip_test.c | 11 |
2 files changed, 27 insertions, 2 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/get_func_ip_test.c b/tools/testing/selftests/bpf/prog_tests/get_func_ip_test.c index 8bb18a8d31a0..088b3653610d 100644 --- a/tools/testing/selftests/bpf/prog_tests/get_func_ip_test.c +++ b/tools/testing/selftests/bpf/prog_tests/get_func_ip_test.c @@ -8,10 +8,21 @@ void test_get_func_ip_test(void) __u32 duration = 0, retval; int err, prog_fd; - skel = get_func_ip_test__open_and_load(); - if (!ASSERT_OK_PTR(skel, "get_func_ip_test__open_and_load")) + skel = get_func_ip_test__open(); + if (!ASSERT_OK_PTR(skel, "get_func_ip_test__open")) return; + /* test6 is x86_64 specifc because of the instruction + * offset, disabling it for all other archs + */ +#ifndef __x86_64__ + bpf_program__set_autoload(skel->progs.test6, false); +#endif + + err = get_func_ip_test__load(skel); + if (!ASSERT_OK(err, "get_func_ip_test__load")) + goto cleanup; + err = get_func_ip_test__attach(skel); if (!ASSERT_OK(err, "get_func_ip_test__attach")) goto cleanup; @@ -33,6 +44,9 @@ void test_get_func_ip_test(void) ASSERT_EQ(skel->bss->test3_result, 1, "test3_result"); ASSERT_EQ(skel->bss->test4_result, 1, "test4_result"); ASSERT_EQ(skel->bss->test5_result, 1, "test5_result"); +#ifdef __x86_64__ + ASSERT_EQ(skel->bss->test6_result, 1, "test6_result"); +#endif cleanup: get_func_ip_test__destroy(skel); diff --git a/tools/testing/selftests/bpf/progs/get_func_ip_test.c b/tools/testing/selftests/bpf/progs/get_func_ip_test.c index ba3e107b52dd..acd587b6e859 100644 --- a/tools/testing/selftests/bpf/progs/get_func_ip_test.c +++ b/tools/testing/selftests/bpf/progs/get_func_ip_test.c @@ -10,6 +10,7 @@ extern const void bpf_fentry_test2 __ksym; extern const void bpf_fentry_test3 __ksym; extern const void bpf_fentry_test4 __ksym; extern const void bpf_modify_return_test __ksym; +extern const void bpf_fentry_test6 __ksym; __u64 test1_result = 0; SEC("fentry/bpf_fentry_test1") @@ -60,3 +61,13 @@ int BPF_PROG(test5, int a, int *b, int ret) test5_result = (const void *) addr == &bpf_modify_return_test; return ret; } + +__u64 test6_result = 0; +SEC("kprobe/bpf_fentry_test6+0x5") +int test6(struct pt_regs *ctx) +{ + __u64 addr = bpf_get_func_ip(ctx); + + test6_result = (const void *) addr == &bpf_fentry_test6 + 5; + return 0; +} |