// SPDX-License-Identifier: GPL-2.0
#include <test_progs.h>
#include "kprobe_multi.skel.h"
#include "trace_helpers.h"
#include "kprobe_multi_empty.skel.h"
#include "kprobe_multi_override.skel.h"
#include "kprobe_multi_session.skel.h"
#include "kprobe_multi_session_cookie.skel.h"
#include "bpf/libbpf_internal.h"
#include "bpf/hashmap.h"
static void kprobe_multi_test_run(struct kprobe_multi *skel, bool test_return)
{
LIBBPF_OPTS(bpf_test_run_opts, topts);
int err, prog_fd;
prog_fd = bpf_program__fd(skel->progs.trigger);
err = bpf_prog_test_run_opts(prog_fd, &topts);
ASSERT_OK(err, "test_run");
ASSERT_EQ(topts.retval, 0, "test_run");
ASSERT_EQ(skel->bss->kprobe_test1_result, 1, "kprobe_test1_result");
ASSERT_EQ(skel->bss->kprobe_test2_result, 1, "kprobe_test2_result");
ASSERT_EQ(skel->bss->kprobe_test3_result, 1, "kprobe_test3_result");
ASSERT_EQ(skel->bss->kprobe_test4_result, 1, "kprobe_test4_result");
ASSERT_EQ(skel->bss->kprobe_test5_result, 1, "kprobe_test5_result");
ASSERT_EQ(skel->bss->kprobe_test6_result, 1, "kprobe_test6_result");
ASSERT_EQ(skel->bss->kprobe_test7_result, 1, "kprobe_test7_result");
ASSERT_EQ(skel->bss->kprobe_test8_result, 1, "kprobe_test8_result");
if (test_return) {
ASSERT_EQ(skel->bss->kretprobe_test1_result, 1, "kretprobe_test1_result");
ASSERT_EQ(skel->bss->kretprobe_test2_result, 1, "kretprobe_test2_result");
ASSERT_EQ(skel->bss->kretprobe_test3_result, 1, "kretprobe_test3_result");
ASSERT_EQ(skel->bss->kretprobe_test4_result, 1, "kretprobe_test4_result");
ASSERT_EQ(skel->bss->kretprobe_test5_result, 1, "kretprobe_test5_result");
ASSERT_EQ(skel->bss->kretprobe_test6_result, 1, "kretprobe_test6_result");
ASSERT_EQ(skel->bss->kretprobe_test7_result, 1, "kretprobe_test7_result");
ASSERT_EQ(skel->bss->kretprobe_test8_result, 1, "kretprobe_test8_result");
}
}
static void test_skel_api(void)
{
struct kprobe_multi *skel = NULL;
int err;
skel = kprobe_multi__open_and_load();
if (!ASSERT_OK_PTR(skel, "kprobe_multi__open_and_load"))
goto cleanup;
skel->bss->pid = getpid();
err = kprobe_multi__attach(skel);
if (!ASSERT_OK(err, "kprobe_multi__attach"))
goto cleanup;
kprobe_multi_test_run(skel, true);
cleanup:
kprobe_multi__destroy(skel);
}
static void test_link_api(struct bpf_link_create_opts *opts)
{
int prog_fd, link1_fd = -1, link2_fd = -1;
struct kprobe_multi *skel = NULL;
skel = kprobe_multi__open_and_load();
if (!ASSERT_OK_PTR(skel, "fentry_raw_skel_load"))
goto cleanup;
skel->bss->pid = getpid();
prog_fd = bpf_program__fd(skel->progs.test_kprobe);
link1_fd = bpf_link_create(prog_fd, 0, BPF_TRACE_KPROBE_MULTI, opts);
if (!ASSERT_GE(link1_fd, 0, "link_fd"))
goto cleanup;
opts->kprobe_multi.flags = BPF_F_KPROBE_MULTI_RETURN;
prog_fd = bpf_program__fd(skel->progs.test_kretprobe);
link2_fd = bpf_link_create(prog_fd, 0, BPF_TRACE_KPROBE_MULTI, opts);
if (!ASSERT_GE(link2_fd, 0, "link_fd"))
goto cleanup;
kprobe_multi_test_run(skel, true);
cleanup:
if (link1_fd != -1)
close(link1_fd);
if (link2_fd != -1)
close(link2_fd);
kprobe_multi__destroy(skel);
}
#define GET_ADDR(__sym, __addr) ({ \
__addr = ksym_get_addr(__sym); \
if (!ASSERT_NEQ(__addr, 0, "kallsyms load failed for " #__sym)) \
return; \
})
static void test_link_api_addrs(void)
{
LIBBPF_OPTS(bpf_link_create_opts, opts);
unsigned long long addrs[8];
GET_ADDR("bpf_fentry_test1", addrs[0]);
GET_ADDR("bpf_fentry_test2", addrs[1]);
GET_ADDR("bpf_fentry_test3", addrs[2]);
GET_ADDR("bpf_fentry_test4", addrs[3]);
GET_ADDR("bpf_fentry_test5", addrs[4]);
GET_ADDR("bpf_fentry_test6", addrs[5]);
GET_ADDR("bpf_fentry_test7", addrs[6]);
GET_ADDR("bpf_fentry_test8", addrs[7]);
opts.kprobe_multi.addrs = (const unsigned long*) addrs;
opts.kprobe_multi.cnt = ARRAY_SIZE(addrs);
test_link_api(&opts);
}
static void test_link_api_syms(void)
{
LIBBPF_OPTS(bpf_link_create_opts, opts);
const char *syms[8] = {
"bpf_fentry_test1",
"bpf_fentry_test2",
"bpf_fentry_test3",
"bpf_fentry_test4",
"bpf_fentry_test5",
"bpf_fentry_test6",
"bpf_fentry_test7",
"bpf_fentry_test8",
};
opts.kprobe_multi.syms = syms;
opts.kprobe_multi.cnt = ARRAY_SIZE(syms);
test_link_api(&opts);
}
static void
test_attach_api(const char *pattern, struct bpf_kprobe_multi_opts *opts)
{
struct bpf_link *link1 = NULL, *link2 = NULL;
struct kprobe_multi *skel = NULL;
skel = kprobe_multi__open_and_load();
if (!ASSERT_OK_PTR(skel, "fentry_raw_skel_load"))
goto cleanup;
skel->bss->pid = getpid();
link1 = bpf_program__attach_kprobe_multi_opts(skel->progs.test_kprobe_manual,
pattern, opts);
if (!ASSERT_OK_PTR(link1, "bpf_program__attach_kprobe_multi_opts"))
goto cleanup;
if (opts) {
opts->retprobe = true;
link2 = bpf_program__attach_kprobe_multi_opts(skel->progs.test_kretprobe_manual,
pattern, opts);
if (!ASSERT_OK_PTR(link2, "bpf_program__attach_kprobe_multi_opts"))
goto cleanup;
}
kprobe_multi_test_run(skel, !!opts);
cleanup:
bpf_link__destroy(link2);
bpf_link__destroy(link1);
kprobe_multi__destroy(skel);
}
static void test_attach_api_pattern(void)
{
LIBBPF_OPTS(bpf_kprobe_multi_opts, opts);
test_attach_api("bpf_fentry_test*", &opts);
test_attach_api("bpf_fentry_test?", NULL);
}
static void test_attach_api_addrs(void)
{
LIBBPF_OPTS(bpf_kprobe_multi_opts, opts);
unsigned long long addrs[8];
GET_ADDR("bpf_fentry_test1", addrs[0]);
GET_ADDR("bpf_fentry_test2", addrs[1]);
GET_ADDR("bpf_fentry_test3", addrs[2]);
GET_ADDR("bpf_fentry_test4", addrs[3]);
GET_ADDR("bpf_fentry_test5", addrs[4]);
GET_ADDR("bpf_fentry_test6", addrs[5]);
GET_ADDR("bpf_fentry_test7", addrs[6]);
GET_ADDR("bpf_fentry_test8", addrs[7]);
opts.addrs = (const unsigned long *) addrs;
opts.cnt = ARRAY_SIZE(addrs);
test_attach_api(NULL, &opts);
}
static void test_attach_api_syms(void)
{
LIBBPF_OPTS(bpf_kprobe_multi_opts, opts);
const char *syms[8] = {
"bpf_fentry_test1",
"bpf_fentry_test2",
"bpf_fentry_test3",
"bpf_fentry_test4",
"bpf_fentry_test5",
"bpf_fentry_test6",
"bpf_fentry_test7",
"bpf_fentry_test8",
};
opts.syms = syms;
opts.cnt = ARRAY_SIZE(syms);
test_attach_api(NULL, &opts);
}
static void test_attach_api_fails(void)
{
LIBBPF_OPTS(bpf_kprobe_multi_opts, opts);
struct kprobe_multi *skel = NULL;
struct bpf_link *link = NULL;
unsigned long long addrs[2];
const char *syms[2] = {
"bpf_fentry_test1",
"bpf_fentry_test2",
};
__u64 cookies[2];
int saved_error;
addrs[0] = ksym_get_addr("bpf_fentry_test1");
addrs[1] = ksym_get_addr("bpf_fentry_test2");
if (!ASSERT_FALSE(!addrs[0] || !addrs[1], "ksym_get_addr"))
goto cleanup;
skel = kprobe_multi__open_and_load();
if (!ASSERT_OK_PTR(skel, "fentry_raw_skel_load"))
goto cleanup;
skel->bss->pid = getpid();
/* fail_1 - pattern and opts NULL */
link = bpf_program__attach_kprobe_multi_opts(skel->progs.test_kprobe_manual,
NULL, NULL);
saved_error = -errno;
if (!ASSERT_ERR_PTR(link, "fail_1"))
goto cleanup;
if (!ASSERT_EQ(saved_error, -EINVAL, "fail_1_error"))
goto cleanup;
/* fail_2 - both addrs and syms set */
opts.addrs = (const unsigned long *) addrs;
opts.syms = syms;
opts.cnt = ARRAY_SIZE(syms);
opts.cookies = NULL;
link = bpf_program__attach_kprobe_multi_opts(skel->progs.test_kprobe_manual,
NULL, &opts);
saved_error = -errno;
if (!ASSERT_ERR_PTR(link, "fail_2"))
goto cleanup;
if (!ASSERT_EQ(saved_error, -EINVAL, "fail_2_error"))
goto cleanup;
/* fail_3 - pattern and addrs set */
opts.addrs = (const unsigned long *) addrs;
opts.syms = NULL;
opts.cnt = ARRAY_SIZE(syms);
opts.cookies = NULL;
link = bpf_program__attach_kprobe_multi_opts(skel->progs.test_kprobe_manual,
"ksys_*", &opts);
saved_error = -errno;
if (!ASSERT_ERR_PTR(link, "fail_3"))
goto cleanup;
if (!ASSERT_EQ(saved_error, -EINVAL, "fail_3_error"))
goto cleanup;
/* fail_4 - pattern and cnt set */
opts.addrs = NULL;
opts.syms = NULL;
opts.cnt = ARRAY_SIZE(syms);
opts.cookies = NULL;
link = bpf_program__attach_kprobe_multi_opts(skel->progs.test_kprobe_manual,
"ksys_*", &opts);
saved_error = -errno;
if (!ASSERT_ERR_PTR(link, "fail_4"))
goto cleanup;
if (!ASSERT_EQ(saved_error, -EINVAL, "fail_4_error"))
goto cleanup;
/* fail_5 - pattern and cookies */
opts.addrs = NULL;
opts.syms = NULL;
opts.cnt = 0;
opts.cookies = cookies;
link = bpf_program__attach_kprobe_multi_opts(skel->progs.test_kprobe_manual,
"ksys_*", &opts);
saved_error = -errno;
if (!ASSERT_ERR_PTR(link, "fail_5"))
goto cleanup;
if (!ASSERT_EQ(saved_error, -EINVAL, "fail_5_error"))
goto cleanup;
/* fail_6 - abnormal cnt */
opts.addrs = (const unsigned long *) addrs;
opts.syms = NULL;
opts.cnt = INT_MAX;
opts.cookies = NULL;
link = bpf_program__attach_kprobe_multi_opts(skel->progs.test_kprobe_manual,
NULL, &opts);
saved_error = -errno;
if (!ASSERT_ERR_PTR(link, "fail_6"))
goto cleanup;
if (!ASSERT_EQ(saved_error, -E2BIG, "fail_6_error"))
goto cleanup;
cleanup:
bpf_link__destroy(link);
kprobe_multi__destroy(skel);
}
static void test_session_skel_api(void)
{
struct kprobe_multi_session *skel = NULL;
LIBBPF_OPTS(bpf_kprobe_multi_opts, opts);
LIBBPF_OPTS(bpf_test_run_opts, topts);
struct bpf_link *link = NULL;
int i, err, prog_fd;
skel = kprobe_multi_session__open_and_load();
if (!ASSERT_OK_PTR(skel, "kprobe_multi_session__open_and_load"))
return;
skel->bss->pid = getpid();
err = kprobe_multi_session__attach(skel);
if (!ASSERT_OK(err, " kprobe_multi_session__attach"))
goto cleanup;
prog_fd = bpf_program__fd(skel->progs.trigger);
err = bpf_prog_test_run_opts(prog_fd, &topts);
ASSERT_OK(err, "test_run");
ASSERT_EQ(topts.retval, 0, "test_run");
/* bpf_fentry_test1-4 trigger return probe, result is 2 */
for (i = 0; i < 4; i++)
ASSERT_EQ(skel->bss->kprobe_session_result[i], 2, "kprobe_session_result");
/* bpf_fentry_test5-8 trigger only entry probe, result is 1 */
for (i = 4; i < 8; i++)
ASSERT_EQ(skel->bss->kprobe_session_result[i], 1, "kprobe_session_result");
cleanup:
bpf_link__destroy(link);
kprobe_multi_session__destroy(skel);
}
static void test_session_cookie_skel_api(void)
{
struct kprobe_multi_session_cookie *skel = NULL;
LIBBPF_OPTS(bpf_kprobe_multi_opts, opts);
LIBBPF_OPTS(bpf_test_run_opts, topts);
struct bpf_link *link = NULL;
int err, prog_fd;
skel = kprobe_multi_session_cookie__open_and_load();
if (!ASSERT_OK_PTR(skel, "fentry_raw_skel_load"))
return;
skel->bss->pid = getpid();
err = kprobe_multi_session_cookie__attach(skel);
if (!ASSERT_OK(err, " kprobe_multi_wrapper__attach"))
goto cleanup;
prog_fd = bpf_program__fd(skel->progs.trigger);
err = bpf_prog_test_run_opts(prog_fd, &topts);
ASSERT_OK(err, "test_run");
ASSERT_EQ(topts.retval, 0, "test_run");
ASSERT_EQ(skel->bss->test_kprobe_1_result, 1, "test_kprobe_1_result");
ASSERT_EQ(skel->bss->test_kprobe_2_result, 2, "test_kprobe_2_result");
ASSERT_EQ(skel->bss->test_kprobe_3_result, 3, "test_kprobe_3_result");
cleanup:
bpf_link__destroy(link);
kprobe_multi_session_cookie__destroy(skel);
}
static size_t symbol_hash(long key, void *ctx __maybe_unused)
{
return str_hash((const char *) key);
}
static bool symbol_equal(long key1, long key2, void *ctx __maybe_unused)
{
return strcmp((const char *) key1, (const char *) key2) == 0;
}
static bool is_invalid_entry(char *buf, bool kernel)
{
if (kernel && strchr(buf, '['))
return true;
if (!kernel && !strchr(buf, '['))
return true;
return false;
}
static bool skip_entry(char *name)
{
/*
* We attach to almost all kernel functions and some of them
* will cause 'suspicious RCU usage' when fprobe is attached
* to them. Filter out the current culprits - arch_cpu_idle
* default_idle and rcu_* functions.
*/
if (!strcmp(name, "arch_cpu_idle"))
return true;
if (!strcmp(name, "default_idle"))
return true;
if (!strncmp(name, "rcu_", 4))
return true;
if (!strcmp(name, "bpf_dispatcher_xdp_func"))
return true;
if (!strncmp(name, "__ftrace_invalid_address__",
sizeof("__ftrace_invalid_address__") - 1))
return true;
return false;
}
/* Do comparision by ignoring '.llvm.<hash>' suffixes. */
static int compare_name(const char *name1, const char *name2)
{
const char *res1, *res2;
int len1, len2;
res1 = strstr(name1, ".llvm.");
res2 = strstr(name2, ".llvm.");
len1 = res1 ? res1 - name1 : strlen(name1);
len2 = res2 ? res2 - name2 : strlen(name2);
if (len1 == len2)
return strncmp(name1, name2, len1);
if (len1 < len2)
return strncmp(name1, name2, len1) <= 0 ? -1 : 1;
return strncmp(name1, name2, len2) >= 0 ? 1 : -1;
}
static int load_kallsyms_compare(const void *p1, const void *p2)
{
return compare_name(((const struct ksym *)p1)->name, ((const struct ksym *)p2)->name);
}
static int search_kallsyms_compare(const void *p1, const struct ksym *p2)
{
return compare_name(p1, p2->name);
}
static int get_syms(char ***symsp, size_t *cntp, bool kernel)
{
size_t cap = 0, cnt = 0;
char *name = NULL, *ksym_name, **syms = NULL;
struct hashmap *map;
struct ksyms *ksyms;
struct ksym *ks;
char buf[256];
FILE *f;
int err = 0;
ksyms = load_kallsyms_custom_local(load_kallsyms_compare);
if (!ASSERT_OK_PTR(ksyms, "load_kallsyms_custom_local"))
return -EINVAL;
/*
* The available_filter_functions contains many duplicates,
* but other than that all symbols are usable in kprobe multi
* interface.
* Filtering out duplicates by using hashmap__add, which won't
* add existing entry.
*/
if (access("/sys/kernel/tracing/trace", F_OK) == 0)
f = fopen("/sys/kernel/tracing/available_filter_functions", "r");
else
f = fopen("/sys/kernel/debug/tracing/available_filter_functions", "r");
if (!f)
return -EINVAL;
map = hashmap__new(symbol_hash, symbol_equal, NULL);
if (IS_ERR(map)) {
err = libbpf_get_error(map);
goto error;
}
while (fgets(buf, sizeof(buf), f)) {
if (is_invalid_entry(buf, kernel))
continue;
free(name);
if (sscanf(buf, "%ms$*[^\n]\n", &name) != 1)
continue;
if (skip_entry(name))
continue;
ks = search_kallsyms_custom_local(ksyms, name, search_kallsyms_compare);
if (!ks) {
err = -EINVAL;
goto error;
}
ksym_name = ks->name;
err = hashmap__add(map, ksym_name, 0);
if (err == -EEXIST) {
err = 0;
continue;
}
if (err)
goto error;
err = libbpf_ensure_mem((void **) &syms, &cap,
sizeof(*syms), cnt + 1);
if (err)
goto error;
syms[cnt++] = ksym_name;
}
*symsp = syms;
*cntp = cnt;
error:
free(name);
fclose(f);
hashmap__free(map);
if (err)
free(syms);
return err;
}
static int get_addrs(unsigned long **addrsp, size_t *cntp, bool kernel)
{
unsigned long *addr, *addrs, *tmp_addrs;
int err = 0, max_cnt, inc_cnt;
char *name = NULL;
size_t cnt = 0;
char buf[256];
FILE *f;
if (access("/sys/kernel/tracing/trace", F_OK) == 0)
f = fopen("/sys/kernel/tracing/available_filter_functions_addrs", "r");
else
f = fopen("/sys/kernel/debug/tracing/available_filter_functions_addrs", "r");
if (!f)
return -ENOENT;
/* In my local setup, the number of entries is 50k+ so Let us initially
* allocate space to hold 64k entries. If 64k is not enough, incrementally
* increase 1k each time.
*/
max_cnt = 65536;
inc_cnt = 1024;
addrs = malloc(max_cnt * sizeof(long));
if (addrs == NULL) {
err = -ENOMEM;
goto error;
}
while (fgets(buf, sizeof(buf), f)) {
if (is_invalid_entry(buf, kernel))
continue;
free(name);
if (sscanf(buf, "%p %ms$*[^\n]\n", &addr, &name) != 2)
continue;
if (skip_entry(name))
continue;
if (cnt == max_cnt) {
max_cnt += inc_cnt;
tmp_addrs = realloc(addrs, max_cnt);
if (!tmp_addrs) {
err = -ENOMEM;
goto error;
}
addrs = tmp_addrs;
}
addrs[cnt++] = (unsigned long)addr;
}
*addrsp = addrs;
*cntp = cnt;
error:
free(name);
fclose(f);
if (err)
free(addrs);
return err;
}
static void do_bench_test(struct kprobe_multi_empty *skel, struct bpf_kprobe_multi_opts *opts)
{
long attach_start_ns, attach_end_ns;
long detach_start_ns, detach_end_ns;
double attach_delta, detach_delta;
struct bpf_link *link = NULL;
attach_start_ns = get_time_ns();
link = bpf_program__attach_kprobe_multi_opts(skel->progs.test_kprobe_empty,
NULL, opts);
attach_end_ns = get_time_ns();
if (!ASSERT_OK_PTR(link, "bpf_program__attach_kprobe_multi_opts"))
return;
detach_start_ns = get_time_ns();
bpf_link__destroy(link);
detach_end_ns = get_time_ns();
attach_delta = (attach_end_ns - attach_start_ns) / 1000000000.0;
detach_delta = (detach_end_ns - detach_start_ns) / 1000000000.0;
printf("%s: found %lu functions\n", __func__, opts->cnt);
printf("%s: attached in %7.3lfs\n", __func__, attach_delta);
printf("%s: detached in %7.3lfs\n", __func__, detach_delta);
}
static void test_kprobe_multi_bench_attach(bool kernel)
{
LIBBPF_OPTS(bpf_kprobe_multi_opts, opts);
struct kprobe_multi_empty *skel = NULL;
char **syms = NULL;
size_t cnt = 0;
if (!ASSERT_OK(get_syms(&syms, &cnt, kernel), "get_syms"))
return;
skel = kprobe_multi_empty__open_and_load();
if (!ASSERT_OK_PTR(skel, "kprobe_multi_empty__open_and_load"))
goto cleanup;
opts.syms = (const char **) syms;
opts.cnt = cnt;
do_bench_test(skel, &opts);
cleanup:
kprobe_multi_empty__destroy(skel);
if (syms)
free(syms);
}
static void test_kprobe_multi_bench_attach_addr(bool kernel)
{
LIBBPF_OPTS(bpf_kprobe_multi_opts, opts);
struct kprobe_multi_empty *skel = NULL;
unsigned long *addrs = NULL;
size_t cnt = 0;
int err;
err = get_addrs(&addrs, &cnt, kernel);
if (err == -ENOENT) {
test__skip();
return;
}
if (!ASSERT_OK(err, "get_addrs"))
return;
skel = kprobe_multi_empty__open_and_load();
if (!ASSERT_OK_PTR(skel, "kprobe_multi_empty__open_and_load"))
goto cleanup;
opts.addrs = addrs;
opts.cnt = cnt;
do_bench_test(skel, &opts);
cleanup:
kprobe_multi_empty__destroy(skel);
free(addrs);
}
static void test_attach_override(void)
{
struct kprobe_multi_override *skel = NULL;
struct bpf_link *link = NULL;
skel = kprobe_multi_override__open_and_load();
if (!ASSERT_OK_PTR(skel, "kprobe_multi_empty__open_and_load"))
goto cleanup;
/* The test_override calls bpf_override_return so it should fail
* to attach to bpf_fentry_test1 function, which is not on error
* injection list.
*/
link = bpf_program__attach_kprobe_multi_opts(skel->progs.test_override,
"bpf_fentry_test1", NULL);
if (!ASSERT_ERR_PTR(link, "override_attached_bpf_fentry_test1")) {
bpf_link__destroy(link);
goto cleanup;
}
/* The should_fail_bio function is on error injection list,
* attach should succeed.
*/
link = bpf_program__attach_kprobe_multi_opts(skel->progs.test_override,
"should_fail_bio", NULL);
if (!ASSERT_OK_PTR(link, "override_attached_should_fail_bio"))
goto cleanup;
bpf_link__destroy(link);
cleanup:
kprobe_multi_override__destroy(skel);
}
void serial_test_kprobe_multi_bench_attach(void)
{
if (test__start_subtest("kernel"))
test_kprobe_multi_bench_attach(true);
if (test__start_subtest("modules"))
test_kprobe_multi_bench_attach(false);
if (test__start_subtest("kernel"))
test_kprobe_multi_bench_attach_addr(true);
if (test__start_subtest("modules"))
test_kprobe_multi_bench_attach_addr(false);
}
void test_kprobe_multi_test(void)
{
if (!ASSERT_OK(load_kallsyms(), "load_kallsyms"))
return;
if (test__start_subtest("skel_api"))
test_skel_api();
if (test__start_subtest("link_api_addrs"))
test_link_api_syms();
if (test__start_subtest("link_api_syms"))
test_link_api_addrs();
if (test__start_subtest("attach_api_pattern"))
test_attach_api_pattern();
if (test__start_subtest("attach_api_addrs"))
test_attach_api_addrs();
if (test__start_subtest("attach_api_syms"))
test_attach_api_syms();
if (test__start_subtest("attach_api_fails"))
test_attach_api_fails();
if (test__start_subtest("attach_override"))
test_attach_override();
if (test__start_subtest("session"))
test_session_skel_api();
if (test__start_subtest("session_cookie"))
test_session_cookie_skel_api();
}
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