diff options
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c | 177 |
1 files changed, 175 insertions, 2 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c b/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c index cd051d3901a9..8269cdee33ae 100644 --- a/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c +++ b/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c @@ -234,6 +234,177 @@ static void test_attach_api_syms(void) test_attach_api("/proc/self/exe", NULL, &opts); } +static void test_attach_api_fails(void) +{ + LIBBPF_OPTS(bpf_link_create_opts, opts); + const char *path = "/proc/self/exe"; + struct uprobe_multi *skel = NULL; + int prog_fd, link_fd = -1; + unsigned long offset = 0; + + skel = uprobe_multi__open_and_load(); + if (!ASSERT_OK_PTR(skel, "uprobe_multi__open_and_load")) + goto cleanup; + + prog_fd = bpf_program__fd(skel->progs.uprobe_extra); + + /* abnormal cnt */ + opts.uprobe_multi.path = path; + opts.uprobe_multi.offsets = &offset; + opts.uprobe_multi.cnt = INT_MAX; + link_fd = bpf_link_create(prog_fd, 0, BPF_TRACE_UPROBE_MULTI, &opts); + if (!ASSERT_ERR(link_fd, "link_fd")) + goto cleanup; + if (!ASSERT_EQ(link_fd, -E2BIG, "big cnt")) + goto cleanup; + + /* cnt is 0 */ + LIBBPF_OPTS_RESET(opts, + .uprobe_multi.path = path, + .uprobe_multi.offsets = (unsigned long *) &offset, + ); + + link_fd = bpf_link_create(prog_fd, 0, BPF_TRACE_UPROBE_MULTI, &opts); + if (!ASSERT_ERR(link_fd, "link_fd")) + goto cleanup; + if (!ASSERT_EQ(link_fd, -EINVAL, "cnt_is_zero")) + goto cleanup; + + /* negative offset */ + offset = -1; + opts.uprobe_multi.path = path; + opts.uprobe_multi.offsets = (unsigned long *) &offset; + opts.uprobe_multi.cnt = 1; + + link_fd = bpf_link_create(prog_fd, 0, BPF_TRACE_UPROBE_MULTI, &opts); + if (!ASSERT_ERR(link_fd, "link_fd")) + goto cleanup; + if (!ASSERT_EQ(link_fd, -EINVAL, "offset_is_negative")) + goto cleanup; + + /* offsets is NULL */ + LIBBPF_OPTS_RESET(opts, + .uprobe_multi.path = path, + .uprobe_multi.cnt = 1, + ); + + link_fd = bpf_link_create(prog_fd, 0, BPF_TRACE_UPROBE_MULTI, &opts); + if (!ASSERT_ERR(link_fd, "link_fd")) + goto cleanup; + if (!ASSERT_EQ(link_fd, -EINVAL, "offsets_is_null")) + goto cleanup; + + /* wrong offsets pointer */ + LIBBPF_OPTS_RESET(opts, + .uprobe_multi.path = path, + .uprobe_multi.offsets = (unsigned long *) 1, + .uprobe_multi.cnt = 1, + ); + + link_fd = bpf_link_create(prog_fd, 0, BPF_TRACE_UPROBE_MULTI, &opts); + if (!ASSERT_ERR(link_fd, "link_fd")) + goto cleanup; + if (!ASSERT_EQ(link_fd, -EFAULT, "offsets_is_wrong")) + goto cleanup; + + /* path is NULL */ + offset = 1; + LIBBPF_OPTS_RESET(opts, + .uprobe_multi.offsets = (unsigned long *) &offset, + .uprobe_multi.cnt = 1, + ); + + link_fd = bpf_link_create(prog_fd, 0, BPF_TRACE_UPROBE_MULTI, &opts); + if (!ASSERT_ERR(link_fd, "link_fd")) + goto cleanup; + if (!ASSERT_EQ(link_fd, -EINVAL, "path_is_null")) + goto cleanup; + + /* wrong path pointer */ + LIBBPF_OPTS_RESET(opts, + .uprobe_multi.path = (const char *) 1, + .uprobe_multi.offsets = (unsigned long *) &offset, + .uprobe_multi.cnt = 1, + ); + + link_fd = bpf_link_create(prog_fd, 0, BPF_TRACE_UPROBE_MULTI, &opts); + if (!ASSERT_ERR(link_fd, "link_fd")) + goto cleanup; + if (!ASSERT_EQ(link_fd, -EFAULT, "path_is_wrong")) + goto cleanup; + + /* wrong path type */ + LIBBPF_OPTS_RESET(opts, + .uprobe_multi.path = "/", + .uprobe_multi.offsets = (unsigned long *) &offset, + .uprobe_multi.cnt = 1, + ); + + link_fd = bpf_link_create(prog_fd, 0, BPF_TRACE_UPROBE_MULTI, &opts); + if (!ASSERT_ERR(link_fd, "link_fd")) + goto cleanup; + if (!ASSERT_EQ(link_fd, -EBADF, "path_is_wrong_type")) + goto cleanup; + + /* wrong cookies pointer */ + LIBBPF_OPTS_RESET(opts, + .uprobe_multi.path = path, + .uprobe_multi.offsets = (unsigned long *) &offset, + .uprobe_multi.cookies = (__u64 *) 1ULL, + .uprobe_multi.cnt = 1, + ); + + link_fd = bpf_link_create(prog_fd, 0, BPF_TRACE_UPROBE_MULTI, &opts); + if (!ASSERT_ERR(link_fd, "link_fd")) + goto cleanup; + if (!ASSERT_EQ(link_fd, -EFAULT, "cookies_is_wrong")) + goto cleanup; + + /* wrong ref_ctr_offsets pointer */ + LIBBPF_OPTS_RESET(opts, + .uprobe_multi.path = path, + .uprobe_multi.offsets = (unsigned long *) &offset, + .uprobe_multi.cookies = (__u64 *) &offset, + .uprobe_multi.ref_ctr_offsets = (unsigned long *) 1, + .uprobe_multi.cnt = 1, + ); + + link_fd = bpf_link_create(prog_fd, 0, BPF_TRACE_UPROBE_MULTI, &opts); + if (!ASSERT_ERR(link_fd, "link_fd")) + goto cleanup; + if (!ASSERT_EQ(link_fd, -EFAULT, "ref_ctr_offsets_is_wrong")) + goto cleanup; + + /* wrong flags */ + LIBBPF_OPTS_RESET(opts, + .uprobe_multi.flags = 1 << 31, + ); + + link_fd = bpf_link_create(prog_fd, 0, BPF_TRACE_UPROBE_MULTI, &opts); + if (!ASSERT_ERR(link_fd, "link_fd")) + goto cleanup; + if (!ASSERT_EQ(link_fd, -EINVAL, "wrong_flags")) + goto cleanup; + + /* wrong pid */ + LIBBPF_OPTS_RESET(opts, + .uprobe_multi.path = path, + .uprobe_multi.offsets = (unsigned long *) &offset, + .uprobe_multi.cnt = 1, + .uprobe_multi.pid = -2, + ); + + link_fd = bpf_link_create(prog_fd, 0, BPF_TRACE_UPROBE_MULTI, &opts); + if (!ASSERT_ERR(link_fd, "link_fd")) + goto cleanup; + ASSERT_EQ(link_fd, -ESRCH, "pid_is_wrong"); + +cleanup: + if (link_fd >= 0) + close(link_fd); + uprobe_multi__destroy(skel); +} + static void __test_link_api(struct child *child) { int prog_fd, link1_fd = -1, link2_fd = -1, link3_fd = -1, link4_fd = -1; @@ -249,7 +420,7 @@ static void __test_link_api(struct child *child) int link_extra_fd = -1; int err; - err = elf_resolve_syms_offsets(path, 3, syms, (unsigned long **) &offsets); + err = elf_resolve_syms_offsets(path, 3, syms, (unsigned long **) &offsets, STT_FUNC); if (!ASSERT_OK(err, "elf_resolve_syms_offsets")) return; @@ -311,7 +482,7 @@ cleanup: free(offsets); } -void test_link_api(void) +static void test_link_api(void) { struct child *child; @@ -412,4 +583,6 @@ void test_uprobe_multi_test(void) test_bench_attach_uprobe(); if (test__start_subtest("bench_usdt")) test_bench_attach_usdt(); + if (test__start_subtest("attach_api_fails")) + test_attach_api_fails(); } |