#include <darwintest.h>
#include <darwintest_utils.h>
+#include <darwintest_multiprocess.h>
#include <kern/debug.h>
#include <kern/kern_cdata.h>
+#include <kern/block_hint.h>
#include <kdd.h>
#include <libproc.h>
#include <mach-o/dyld.h>
#include <mach-o/dyld_priv.h>
#include <sys/syscall.h>
#include <sys/stackshot.h>
+#include <uuid/uuid.h>
+#include <servers/bootstrap.h>
+#include <pthread/workqueue_private.h>
+#include <dispatch/private.h>
+#import <zlib.h>
T_GLOBAL_META(
T_META_NAMESPACE("xnu.stackshot"),
static const char *current_process_name(void);
static void verify_stackshot_sharedcache_layout(struct dyld_uuid_info_64 *uuids, uint32_t uuid_count);
-static void parse_stackshot(uint64_t stackshot_parsing_flags, void *ssbuf, size_t sslen, int child_pid);
+static void parse_stackshot(uint64_t stackshot_parsing_flags, void *ssbuf, size_t sslen, NSDictionary *extra);
static void parse_thread_group_stackshot(void **sbuf, size_t sslen);
static uint64_t stackshot_timestamp(void *ssbuf, size_t sslen);
static void initialize_thread(void);
+static uint64_t global_flags = 0;
+
#define DEFAULT_STACKSHOT_BUFFER_SIZE (1024 * 1024)
#define MAX_STACKSHOT_BUFFER_SIZE (6 * 1024 * 1024)
+#define SRP_SERVICE_NAME "com.apple.xnu.test.stackshot.special_reply_port"
+
/* bit flags for parse_stackshot */
#define PARSE_STACKSHOT_DELTA 0x01
#define PARSE_STACKSHOT_ZOMBIE 0x02
#define PARSE_STACKSHOT_SHAREDCACHE_LAYOUT 0x04
#define PARSE_STACKSHOT_DISPATCH_QUEUE_LABEL 0x08
#define PARSE_STACKSHOT_TURNSTILEINFO 0x10
+#define PARSE_STACKSHOT_POSTEXEC 0x20
+#define PARSE_STACKSHOT_WAITINFO_CSEG 0x40
+#define PARSE_STACKSHOT_WAITINFO_SRP 0x80
+#define PARSE_STACKSHOT_TRANSLATED 0x100
+#define PARSE_STACKSHOT_SHAREDCACHE_FLAGS 0x200
+
+/* keys for 'extra' dictionary for parse_stackshot */
+static const NSString* zombie_child_pid_key = @"zombie_child_pid"; // -> @(pid), required for PARSE_STACKSHOT_ZOMBIE
+static const NSString* postexec_child_unique_pid_key = @"postexec_child_unique_pid"; // -> @(unique_pid), required for PARSE_STACKSHOT_POSTEXEC
+static const NSString* cseg_expected_threadid_key = @"cseg_expected_threadid"; // -> @(tid), required for PARSE_STACKSHOT_WAITINFO_CSEG
+static const NSString* srp_expected_threadid_key = @"srp_expected_threadid"; // -> @(tid), this or ..._pid required for PARSE_STACKSHOT_WAITINFO_SRP
+static const NSString* srp_expected_pid_key = @"srp_expected_pid"; // -> @(pid), this or ..._threadid required for PARSE_STACKSHOT_WAITINFO_SRP
+static const NSString* translated_child_pid_key = @"translated_child_pid"; // -> @(pid), required for PARSE_STACKSHOT_TRANSLATED
+static const NSString* sharedcache_child_pid_key = @"sharedcache_child_pid"; // @(pid), required for PARSE_STACKSHOT_SHAREDCACHE_FLAGS
+static const NSString* sharedcache_child_sameaddr_key = @"sharedcache_child_sameaddr"; // @(0 or 1), required for PARSE_STACKSHOT_SHAREDCACHE_FLAGS
#define TEST_STACKSHOT_QUEUE_LABEL "houston.we.had.a.problem"
#define TEST_STACKSHOT_QUEUE_LABEL_LENGTH sizeof(TEST_STACKSHOT_QUEUE_LABEL)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
int len = syscall(SYS_microstackshot, buf, size,
- STACKSHOT_GET_MICROSTACKSHOT);
+ (uint32_t) STACKSHOT_GET_MICROSTACKSHOT);
#pragma clang diagnostic pop
if (len == ENOSYS) {
T_SKIP("microstackshot syscall failed, likely not compiled with CONFIG_TELEMETRY");
struct scenario {
const char *name;
- uint32_t flags;
+ uint64_t flags;
bool quiet;
bool should_fail;
bool maybe_unsupported;
}
static void
-take_stackshot(struct scenario *scenario, void (^cb)(void *buf, size_t size))
+take_stackshot(struct scenario *scenario, bool compress_ok, void (^cb)(void *buf, size_t size))
{
+start:
initialize_thread();
void *config = stackshot_config_create();
quiet(scenario);
T_ASSERT_NOTNULL(config, "created stackshot config");
- int ret = stackshot_config_set_flags(config, scenario->flags);
+ int ret = stackshot_config_set_flags(config, scenario->flags | global_flags);
quiet(scenario);
- T_ASSERT_POSIX_ZERO(ret, "set flags %#x on stackshot config", scenario->flags);
+ T_ASSERT_POSIX_ZERO(ret, "set flags %#llx on stackshot config", scenario->flags);
if (scenario->size_hint > 0) {
ret = stackshot_config_set_size_hint(config, scenario->size_hint);
fclose(f);
}
cb(buf, size);
+ if (compress_ok) {
+ if (global_flags == 0) {
+ T_LOG("Restarting test with compression");
+ global_flags |= STACKSHOT_DO_COMPRESS;
+ goto start;
+ } else {
+ global_flags = 0;
+ }
+ }
ret = stackshot_config_dealloc(config);
T_QUIET; T_EXPECT_POSIX_ZERO(ret, "deallocated stackshot config");
}
+T_DECL(simple_compressed, "take a simple compressed stackshot")
+{
+ struct scenario scenario = {
+ .name = "kcdata_compressed",
+ .flags = (STACKSHOT_DO_COMPRESS | STACKSHOT_SAVE_LOADINFO | STACKSHOT_THREAD_WAITINFO | STACKSHOT_GET_GLOBAL_MEM_STATS |
+ STACKSHOT_SAVE_IMP_DONATION_PIDS | STACKSHOT_KCDATA_FORMAT),
+ };
+
+ T_LOG("taking compressed kcdata stackshot");
+ take_stackshot(&scenario, true, ^(void *ssbuf, size_t sslen) {
+ parse_stackshot(0, ssbuf, sslen, nil);
+ });
+}
+
+T_DECL(panic_compressed, "take a compressed stackshot with the same flags as a panic stackshot")
+{
+ uint64_t stackshot_flags = (STACKSHOT_SAVE_KEXT_LOADINFO |
+ STACKSHOT_SAVE_LOADINFO |
+ STACKSHOT_KCDATA_FORMAT |
+ STACKSHOT_ENABLE_BT_FAULTING |
+ STACKSHOT_ENABLE_UUID_FAULTING |
+ STACKSHOT_DO_COMPRESS |
+ STACKSHOT_NO_IO_STATS |
+ STACKSHOT_THREAD_WAITINFO |
+#if TARGET_OS_MAC
+ STACKSHOT_COLLECT_SHAREDCACHE_LAYOUT |
+#endif
+ STACKSHOT_DISABLE_LATENCY_INFO);
+
+ struct scenario scenario = {
+ .name = "kcdata_panic_compressed",
+ .flags = stackshot_flags,
+ };
+
+ T_LOG("taking compressed kcdata stackshot with panic flags");
+ take_stackshot(&scenario, true, ^(void *ssbuf, size_t sslen) {
+ parse_stackshot(0, ssbuf, sslen, nil);
+ });
+}
+
T_DECL(kcdata, "test that kcdata stackshots can be taken and parsed")
{
struct scenario scenario = {
};
T_LOG("taking kcdata stackshot");
- take_stackshot(&scenario, ^(void *ssbuf, size_t sslen) {
- parse_stackshot(0, ssbuf, sslen, -1);
+ take_stackshot(&scenario, true, ^(void *ssbuf, size_t sslen) {
+ parse_stackshot(0, ssbuf, sslen, nil);
});
}
};
T_LOG("taking faulting stackshot");
- take_stackshot(&scenario, ^(void *ssbuf, size_t sslen) {
- parse_stackshot(0, ssbuf, sslen, -1);
+ take_stackshot(&scenario, true, ^(void *ssbuf, size_t sslen) {
+ parse_stackshot(0, ssbuf, sslen, nil);
});
}
};
T_LOG("attempting to take stackshot with kernel-only flag");
- take_stackshot(&scenario, ^(__unused void *ssbuf, __unused size_t sslen) {
+ take_stackshot(&scenario, true, ^(__unused void *ssbuf, __unused size_t sslen) {
T_ASSERT_FAIL("stackshot data callback called");
});
}
};
T_LOG("taking full stackshot");
- take_stackshot(&scenario, ^(void *ssbuf, size_t sslen) {
+ take_stackshot(&scenario, false, ^(void *ssbuf, size_t sslen) {
uint64_t stackshot_time = stackshot_timestamp(ssbuf, sslen);
T_LOG("taking delta stackshot since time %" PRIu64, stackshot_time);
- parse_stackshot(0, ssbuf, sslen, -1);
+ parse_stackshot(0, ssbuf, sslen, nil);
struct scenario delta_scenario = {
.flags = (STACKSHOT_SAVE_LOADINFO | STACKSHOT_GET_GLOBAL_MEM_STATS
.since_timestamp = stackshot_time
};
- take_stackshot(&delta_scenario, ^(void *dssbuf, size_t dsslen) {
- parse_stackshot(PARSE_STACKSHOT_DELTA, dssbuf, dsslen, -1);
+ take_stackshot(&delta_scenario, false, ^(void *dssbuf, size_t dsslen) {
+ parse_stackshot(PARSE_STACKSHOT_DELTA, dssbuf, dsslen, nil);
});
});
}
}
T_LOG("taking stackshot with STACKSHOT_COLLECT_SHAREDCACHE_LAYOUT set");
- take_stackshot(&scenario, ^(void *ssbuf, size_t sslen) {
- parse_stackshot(PARSE_STACKSHOT_SHAREDCACHE_LAYOUT, ssbuf, sslen, -1);
+ take_stackshot(&scenario, true, ^(void *ssbuf, size_t sslen) {
+ parse_stackshot(PARSE_STACKSHOT_SHAREDCACHE_LAYOUT, ssbuf, sslen, nil);
});
}
STACKSHOT_SAVE_LOADINFO |
STACKSHOT_SAVE_KEXT_LOADINFO |
STACKSHOT_GET_GLOBAL_MEM_STATS |
- // STACKSHOT_GET_BOOT_PROFILE |
STACKSHOT_SAVE_IMP_DONATION_PIDS |
STACKSHOT_COLLECT_SHAREDCACHE_LAYOUT |
STACKSHOT_THREAD_GROUP |
STACKSHOT_SAVE_JETSAM_COALITIONS |
STACKSHOT_ASID |
- // STACKSHOT_PAGE_TABLES |
0),
};
start_time = clock_gettime_nsec_np(CLOCK_MONOTONIC);
while (clock_gettime_nsec_np(CLOCK_MONOTONIC) - start_time < max_diff_time) {
- take_stackshot(&scenario, ^(void *ssbuf, size_t sslen) {
+ take_stackshot(&scenario, false, ^(void * __unused ssbuf,
+ size_t __unused sslen) {
printf(".");
fflush(stdout);
});
dispatch_semaphore_wait(child_ready_sem, DISPATCH_TIME_FOREVER);
T_LOG("taking kcdata stackshot with libdispatch queue labels");
- take_stackshot(&scenario, ^(void *ssbuf, size_t sslen) {
- parse_stackshot(PARSE_STACKSHOT_DISPATCH_QUEUE_LABEL, ssbuf, sslen, -1);
+ take_stackshot(&scenario, true, ^(void *ssbuf, size_t sslen) {
+ parse_stackshot(PARSE_STACKSHOT_DISPATCH_QUEUE_LABEL, ssbuf, sslen, nil);
});
dispatch_semaphore_signal(parent_done_sem);
}
+#define CACHEADDR_ENV "STACKSHOT_TEST_DYLDADDR"
+T_HELPER_DECL(spawn_reslide_child, "child process to spawn with alternate slide")
+{
+ size_t shared_cache_len;
+ const void *addr, *prevaddr;
+ uintmax_t v;
+ char *endptr;
+
+ const char *cacheaddr_env = getenv(CACHEADDR_ENV);
+ T_QUIET; T_ASSERT_NOTNULL(cacheaddr_env, "getenv("CACHEADDR_ENV")");
+ errno = 0;
+ endptr = NULL;
+ v = strtoumax(cacheaddr_env, &endptr, 16); /* read hex value */
+ T_WITH_ERRNO; T_QUIET; T_ASSERT_NE(v, 0l, "getenv(%s) = \"%s\" should be a non-zero hex number", CACHEADDR_ENV, cacheaddr_env);
+ T_QUIET; T_ASSERT_EQ(*endptr, 0, "getenv(%s) = \"%s\" endptr \"%s\" should be empty", CACHEADDR_ENV, cacheaddr_env, endptr);
+
+ prevaddr = (const void *)v;
+ addr = _dyld_get_shared_cache_range(&shared_cache_len);
+ T_QUIET; T_ASSERT_NOTNULL(addr, "shared cache address");
+
+ T_QUIET; T_ASSERT_POSIX_SUCCESS(kill(getppid(), (addr == prevaddr) ? SIGUSR2 : SIGUSR1), "signaled parent to take stackshot");
+ for (;;) {
+ (void) pause(); /* parent will kill -9 us */
+ }
+}
+
+T_DECL(shared_cache_flags, "tests stackshot's task_ss_flags for the shared cache")
+{
+ posix_spawnattr_t attr;
+ char *env_addr;
+ char path[PATH_MAX];
+ __block bool child_same_addr = false;
+
+ uint32_t path_size = sizeof(path);
+ T_QUIET; T_ASSERT_POSIX_ZERO(_NSGetExecutablePath(path, &path_size), "_NSGetExecutablePath");
+ char *args[] = { path, "-n", "spawn_reslide_child", NULL };
+ pid_t pid;
+ size_t shared_cache_len;
+ const void *addr;
+
+ dispatch_source_t child_diffsig_src, child_samesig_src;
+ dispatch_semaphore_t child_ready_sem = dispatch_semaphore_create(0);
+ T_QUIET; T_ASSERT_NOTNULL(child_ready_sem, "shared_cache child semaphore");
+
+ dispatch_queue_t signal_processing_q = dispatch_queue_create("signal processing queue", NULL);
+ T_QUIET; T_ASSERT_NOTNULL(signal_processing_q, "signal processing queue");
+
+ signal(SIGUSR1, SIG_IGN);
+ signal(SIGUSR2, SIG_IGN);
+ child_samesig_src = dispatch_source_create(DISPATCH_SOURCE_TYPE_SIGNAL, SIGUSR1, 0, signal_processing_q);
+ T_QUIET; T_ASSERT_NOTNULL(child_samesig_src, "dispatch_source_create (child_samesig_src)");
+ child_diffsig_src = dispatch_source_create(DISPATCH_SOURCE_TYPE_SIGNAL, SIGUSR2, 0, signal_processing_q);
+ T_QUIET; T_ASSERT_NOTNULL(child_diffsig_src, "dispatch_source_create (child_diffsig_src)");
+
+ /* child will signal us depending on if their addr is the same or different */
+ dispatch_source_set_event_handler(child_samesig_src, ^{ child_same_addr = false; dispatch_semaphore_signal(child_ready_sem); });
+ dispatch_source_set_event_handler(child_diffsig_src, ^{ child_same_addr = true; dispatch_semaphore_signal(child_ready_sem); });
+ dispatch_activate(child_samesig_src);
+ dispatch_activate(child_diffsig_src);
+
+ addr = _dyld_get_shared_cache_range(&shared_cache_len);
+ T_QUIET; T_ASSERT_NOTNULL(addr, "shared cache address");
+
+ T_QUIET; T_ASSERT_POSIX_SUCCESS(asprintf(&env_addr, "%p", addr), "asprintf of env_addr succeeded");
+ T_QUIET; T_ASSERT_POSIX_SUCCESS(setenv(CACHEADDR_ENV, env_addr, true), "setting "CACHEADDR_ENV" to %s", env_addr);
+
+ T_QUIET; T_ASSERT_POSIX_ZERO(posix_spawnattr_init(&attr), "posix_spawnattr_init");
+ T_QUIET; T_ASSERT_POSIX_ZERO(posix_spawnattr_setflags(&attr, _POSIX_SPAWN_RESLIDE), "posix_spawnattr_setflags");
+ int sp_ret = posix_spawn(&pid, path, NULL, &attr, args, environ);
+ T_ASSERT_POSIX_ZERO(sp_ret, "spawned process '%s' with PID %d", args[0], pid);
+
+ dispatch_semaphore_wait(child_ready_sem, DISPATCH_TIME_FOREVER);
+ T_LOG("received signal from child (%s), capturing stackshot", child_same_addr ? "same shared cache addr" : "different shared cache addr");
+
+ struct scenario scenario = {
+ .name = "shared_cache_flags",
+ .flags = (STACKSHOT_SAVE_LOADINFO | STACKSHOT_GET_GLOBAL_MEM_STATS
+ | STACKSHOT_COLLECT_SHAREDCACHE_LAYOUT
+ | STACKSHOT_SAVE_IMP_DONATION_PIDS | STACKSHOT_KCDATA_FORMAT),
+ };
+
+ take_stackshot(&scenario, false, ^( void *ssbuf, size_t sslen) {
+ int status;
+ /* First kill the child so we can reap it */
+ T_QUIET; T_ASSERT_POSIX_SUCCESS(kill(pid, SIGKILL), "killing spawned process");
+ T_QUIET; T_ASSERT_POSIX_SUCCESS(waitpid(pid, &status, 0), "waitpid on spawned child");
+ T_QUIET; T_ASSERT_EQ(!!WIFSIGNALED(status), 1, "waitpid status should be signalled");
+ T_QUIET; T_ASSERT_EQ(WTERMSIG(status), SIGKILL, "waitpid status should be SIGKILLed");
+
+ parse_stackshot(PARSE_STACKSHOT_SHAREDCACHE_FLAGS, ssbuf, sslen,
+ @{sharedcache_child_pid_key: @(pid), sharedcache_child_sameaddr_key: @(child_same_addr ? 1 : 0)});
+ });
+}
+
static void *stuck_sysctl_thread(void *arg) {
int val = 1;
dispatch_semaphore_t child_thread_started = *(dispatch_semaphore_t *)arg;
| STACKSHOT_SAVE_IMP_DONATION_PIDS | STACKSHOT_KCDATA_FORMAT),
};
- take_stackshot(&scenario, ^( void *ssbuf, size_t sslen) {
+ take_stackshot(&scenario, false, ^( void *ssbuf, size_t sslen) {
/* First unwedge the child so we can reap it */
int val = 1, status;
T_ASSERT_POSIX_SUCCESS(sysctlbyname("kern.unwedge_thread", NULL, NULL, &val, sizeof(val)), "unwedge child");
T_QUIET; T_ASSERT_POSIX_SUCCESS(waitpid(pid, &status, 0), "waitpid on zombie child");
- parse_stackshot(PARSE_STACKSHOT_ZOMBIE, ssbuf, sslen, pid);
+ parse_stackshot(PARSE_STACKSHOT_ZOMBIE, ssbuf, sslen, @{zombie_child_pid_key: @(pid)});
+ });
+}
+
+T_HELPER_DECL(exec_child_preexec, "child process pre-exec")
+{
+ dispatch_queue_t signal_processing_q = dispatch_queue_create("signal processing queue", NULL);
+ T_QUIET; T_ASSERT_NOTNULL(signal_processing_q, "signal processing queue");
+
+ signal(SIGUSR1, SIG_IGN);
+ dispatch_source_t parent_sig_src = dispatch_source_create(DISPATCH_SOURCE_TYPE_SIGNAL, SIGUSR1, 0, signal_processing_q);
+ T_QUIET; T_ASSERT_NOTNULL(parent_sig_src, "dispatch_source_create (child_sig_src)");
+ dispatch_source_set_event_handler(parent_sig_src, ^{
+
+ // Parent took a timestamp then signaled us: exec into the next process
+
+ char path[PATH_MAX];
+ uint32_t path_size = sizeof(path);
+ T_QUIET; T_ASSERT_POSIX_ZERO(_NSGetExecutablePath(path, &path_size), "_NSGetExecutablePath");
+ char *args[] = { path, "-n", "exec_child_postexec", NULL };
+
+ T_QUIET; T_ASSERT_POSIX_ZERO(execve(args[0], args, NULL), "execing into exec_child_postexec");
+ });
+ dispatch_activate(parent_sig_src);
+
+ T_ASSERT_POSIX_SUCCESS(kill(getppid(), SIGUSR1), "signaled parent to take timestamp");
+
+ sleep(100);
+ // Should never get here
+ T_FAIL("Received signal to exec from parent");
+}
+
+T_HELPER_DECL(exec_child_postexec, "child process post-exec to sample")
+{
+ T_ASSERT_POSIX_SUCCESS(kill(getppid(), SIGUSR1), "signaled parent to take stackshot");
+ sleep(100);
+ // Should never get here
+ T_FAIL("Killed by parent");
+}
+
+T_DECL(exec, "test getting full task snapshots for a task that execs")
+{
+ char path[PATH_MAX];
+ uint32_t path_size = sizeof(path);
+ T_QUIET; T_ASSERT_POSIX_ZERO(_NSGetExecutablePath(path, &path_size), "_NSGetExecutablePath");
+ char *args[] = { path, "-n", "exec_child_preexec", NULL };
+
+ dispatch_source_t child_sig_src;
+ dispatch_semaphore_t child_ready_sem = dispatch_semaphore_create(0);
+ T_QUIET; T_ASSERT_NOTNULL(child_ready_sem, "exec child semaphore");
+
+ dispatch_queue_t signal_processing_q = dispatch_queue_create("signal processing queue", NULL);
+ T_QUIET; T_ASSERT_NOTNULL(signal_processing_q, "signal processing queue");
+
+ pid_t pid;
+
+ T_LOG("spawning a child");
+
+ signal(SIGUSR1, SIG_IGN);
+ child_sig_src = dispatch_source_create(DISPATCH_SOURCE_TYPE_SIGNAL, SIGUSR1, 0, signal_processing_q);
+ T_QUIET; T_ASSERT_NOTNULL(child_sig_src, "dispatch_source_create (child_sig_src)");
+
+ dispatch_source_set_event_handler(child_sig_src, ^{ dispatch_semaphore_signal(child_ready_sem); });
+ dispatch_activate(child_sig_src);
+
+ int sp_ret = posix_spawn(&pid, args[0], NULL, NULL, args, NULL);
+ T_QUIET; T_ASSERT_POSIX_ZERO(sp_ret, "spawned process '%s' with PID %d", args[0], pid);
+
+ dispatch_semaphore_wait(child_ready_sem, DISPATCH_TIME_FOREVER);
+
+ uint64_t start_time = mach_absolute_time();
+
+ struct proc_uniqidentifierinfo proc_info_data = { };
+ int retval = proc_pidinfo(getpid(), PROC_PIDUNIQIDENTIFIERINFO, 0, &proc_info_data, sizeof(proc_info_data));
+ T_QUIET; T_EXPECT_POSIX_SUCCESS(retval, "proc_pidinfo PROC_PIDUNIQIDENTIFIERINFO");
+ T_QUIET; T_ASSERT_EQ_INT(retval, (int) sizeof(proc_info_data), "proc_pidinfo PROC_PIDUNIQIDENTIFIERINFO returned data");
+ uint64_t unique_pid = proc_info_data.p_uniqueid;
+
+ T_LOG("received signal from pre-exec child, unique_pid is %llu, timestamp is %llu", unique_pid, start_time);
+
+ T_ASSERT_POSIX_SUCCESS(kill(pid, SIGUSR1), "signaled pre-exec child to exec");
+
+ dispatch_semaphore_wait(child_ready_sem, DISPATCH_TIME_FOREVER);
+
+ T_LOG("received signal from post-exec child, capturing stackshot");
+
+ struct scenario scenario = {
+ .name = "exec",
+ .flags = (STACKSHOT_SAVE_LOADINFO | STACKSHOT_GET_GLOBAL_MEM_STATS
+ | STACKSHOT_SAVE_IMP_DONATION_PIDS | STACKSHOT_KCDATA_FORMAT
+ | STACKSHOT_COLLECT_DELTA_SNAPSHOT),
+ .since_timestamp = start_time
+ };
+
+ take_stackshot(&scenario, false, ^( void *ssbuf, size_t sslen) {
+ // Kill the child
+ int status;
+ T_ASSERT_POSIX_SUCCESS(kill(pid, SIGKILL), "kill post-exec child %d", pid);
+ T_ASSERT_POSIX_SUCCESS(waitpid(pid, &status, 0), "waitpid on post-exec child");
+
+ parse_stackshot(PARSE_STACKSHOT_POSTEXEC | PARSE_STACKSHOT_DELTA, ssbuf, sslen, @{postexec_child_unique_pid_key: @(unique_pid)});
});
}
dispatch_queue_t dq1, dq2;
dispatch_semaphore_t sema_x;
dispatch_queue_attr_t dq1_attr, dq2_attr;
- qos_class_t main_qos = 0;
- int main_relpri = 0, main_relpri2 = 0, main_afterpri = 0;
+ __block qos_class_t main_qos = 0;
+ __block int main_relpri = 0, main_relpri2 = 0, main_afterpri = 0;
struct scenario scenario = {
.name = "turnstile_singlehop",
.flags = (STACKSHOT_THREAD_WAITINFO | STACKSHOT_KCDATA_FORMAT),
T_LOG("Async2 completed");
while (1) {
- main_afterpri = get_user_promotion_basepri();
+ main_afterpri = (int) get_user_promotion_basepri();
if (main_relpri != main_afterpri) {
T_LOG("Success with promotion pri is %d", main_afterpri);
break;
usleep(100);
}
- take_stackshot(&scenario, ^( void *ssbuf, size_t sslen) {
- parse_stackshot(PARSE_STACKSHOT_TURNSTILEINFO, ssbuf, sslen, -1);
+ take_stackshot(&scenario, true, ^( void *ssbuf, size_t sslen) {
+ parse_stackshot(PARSE_STACKSHOT_TURNSTILEINFO, ssbuf, sslen, nil);
});
}
};
T_LOG("attempting to take stackshot with instructions and cycles");
- take_stackshot(&scenario, ^(void *ssbuf, size_t sslen) {
- parse_stackshot(0, ssbuf, sslen, -1);
+ take_stackshot(&scenario, false, ^(void *ssbuf, size_t sslen) {
+ parse_stackshot(0, ssbuf, sslen, nil);
expect_instrs_cycles_in_stackshot(ssbuf, sslen);
});
}
};
T_LOG("taking full stackshot");
- take_stackshot(&scenario, ^(void *ssbuf, size_t sslen) {
+ take_stackshot(&scenario, false, ^(void *ssbuf, size_t sslen) {
uint64_t stackshot_time = stackshot_timestamp(ssbuf, sslen);
T_LOG("taking delta stackshot since time %" PRIu64, stackshot_time);
- parse_stackshot(0, ssbuf, sslen, -1);
+ parse_stackshot(0, ssbuf, sslen, nil);
expect_instrs_cycles_in_stackshot(ssbuf, sslen);
struct scenario delta_scenario = {
.since_timestamp = stackshot_time,
};
- take_stackshot(&delta_scenario, ^(void *dssbuf, size_t dsslen) {
- parse_stackshot(PARSE_STACKSHOT_DELTA, dssbuf, dsslen, -1);
+ take_stackshot(&delta_scenario, false, ^(void *dssbuf, size_t dsslen) {
+ parse_stackshot(PARSE_STACKSHOT_DELTA, dssbuf, dsslen, nil);
expect_instrs_cycles_in_stackshot(dssbuf, dsslen);
});
});
};
T_LOG("attempting to take stackshot with thread group flag");
- take_stackshot(&scenario, ^(void *ssbuf, size_t sslen) {
+ take_stackshot(&scenario, false, ^(void *ssbuf, size_t sslen) {
parse_thread_group_stackshot(ssbuf, sslen);
});
}
};
T_LOG("attempting to take stackshot with ASID and page table flags");
- take_stackshot(&scenario, ^(void *ssbuf, size_t sslen) {
+ take_stackshot(&scenario, false, ^(void *ssbuf, size_t sslen) {
parse_page_table_asid_stackshot(ssbuf, sslen);
});
}
T_FAIL("failed to find matching UUID in stackshot data");
}
+T_DECL(translated, "tests translated bit is set correctly")
+{
+#if !(TARGET_OS_OSX && TARGET_CPU_ARM64)
+ T_SKIP("Only valid on Apple silicon Macs")
+#endif
+ // Get path of stackshot_translated_child helper binary
+ char path[PATH_MAX];
+ uint32_t path_size = sizeof(path);
+ T_QUIET; T_ASSERT_POSIX_ZERO(_NSGetExecutablePath(path, &path_size), "_NSGetExecutablePath");
+ char* binary_name = strrchr(path, '/');
+ if (binary_name) binary_name++;
+ T_QUIET; T_ASSERT_NOTNULL(binary_name, "Find basename in path '%s'", path);
+ strlcpy(binary_name, "stackshot_translated_child", path_size - (binary_name - path));
+ char *args[] = { path, NULL };
+
+ dispatch_source_t child_sig_src;
+ dispatch_semaphore_t child_ready_sem = dispatch_semaphore_create(0);
+ T_QUIET; T_ASSERT_NOTNULL(child_ready_sem, "exec child semaphore");
+
+ dispatch_queue_t signal_processing_q = dispatch_queue_create("signal processing queue", NULL);
+ T_QUIET; T_ASSERT_NOTNULL(signal_processing_q, "signal processing queue");
+
+ signal(SIGUSR1, SIG_IGN);
+ child_sig_src = dispatch_source_create(DISPATCH_SOURCE_TYPE_SIGNAL, SIGUSR1, 0, signal_processing_q);
+ T_QUIET; T_ASSERT_NOTNULL(child_sig_src, "dispatch_source_create (child_sig_src)");
+
+ dispatch_source_set_event_handler(child_sig_src, ^{ dispatch_semaphore_signal(child_ready_sem); });
+ dispatch_activate(child_sig_src);
+
+ // Spawn child
+ pid_t pid;
+ T_LOG("spawning translated child");
+ T_QUIET; T_ASSERT_POSIX_ZERO(posix_spawn(&pid, args[0], NULL, NULL, args, NULL), "spawned process '%s' with PID %d", args[0], pid);
+
+ // Wait for the the child to spawn up
+ dispatch_semaphore_wait(child_ready_sem, DISPATCH_TIME_FOREVER);
+
+ // Make sure the child is running and is translated
+ int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, pid };
+ struct kinfo_proc process_info;
+ size_t bufsize = sizeof(process_info);
+ T_QUIET; T_ASSERT_POSIX_SUCCESS(sysctl(mib, (unsigned)(sizeof(mib)/sizeof(int)), &process_info, &bufsize, NULL, 0), "get translated child process info");
+ T_QUIET; T_ASSERT_GT(bufsize, (size_t)0, "process info is not empty");
+ T_QUIET; T_ASSERT_TRUE((process_info.kp_proc.p_flag & P_TRANSLATED), "KERN_PROC_PID reports child is translated");
+
+ T_LOG("capturing stackshot");
+
+ struct scenario scenario = {
+ .name = "translated",
+ .flags = (STACKSHOT_SAVE_LOADINFO | STACKSHOT_GET_GLOBAL_MEM_STATS
+ | STACKSHOT_SAVE_IMP_DONATION_PIDS | STACKSHOT_KCDATA_FORMAT),
+ };
+
+ take_stackshot(&scenario, true, ^( void *ssbuf, size_t sslen) {
+ parse_stackshot(PARSE_STACKSHOT_TRANSLATED, ssbuf, sslen, @{translated_child_pid_key: @(pid)});
+ });
+
+ // Kill the child
+ int status;
+ T_QUIET; T_ASSERT_POSIX_SUCCESS(kill(pid, SIGTERM), "kill translated child");
+ T_QUIET; T_ASSERT_POSIX_SUCCESS(waitpid(pid, &status, 0), "waitpid on translated child");
+
+}
+
T_DECL(proc_uuid_info, "tests that the main binary UUID for a proc is always populated")
{
struct proc_uniqidentifierinfo proc_info_data = { };
};
T_LOG("attempting to take stackshot for current PID");
- take_stackshot(&scenario, ^(void *ssbuf, size_t sslen) {
+ take_stackshot(&scenario, false, ^(void *ssbuf, size_t sslen) {
stackshot_verify_current_proc_uuid_info(ssbuf, sslen, expected_mach_header_offset, &proc_info_data);
});
}
+T_DECL(cseg_waitinfo, "test that threads stuck in the compressor report correct waitinfo")
+{
+ struct scenario scenario = {
+ .name = "cseg_waitinfo",
+ .quiet = false,
+ .flags = (STACKSHOT_THREAD_WAITINFO | STACKSHOT_KCDATA_FORMAT),
+ };
+ __block uint64_t thread_id = 0;
+
+ dispatch_queue_t dq = dispatch_queue_create("com.apple.stackshot.cseg_waitinfo", NULL);
+ dispatch_semaphore_t child_ok = dispatch_semaphore_create(0);
+
+ dispatch_async(dq, ^{
+ pthread_threadid_np(NULL, &thread_id);
+ dispatch_semaphore_signal(child_ok);
+ int val = 1;
+ T_ASSERT_POSIX_SUCCESS(sysctlbyname("kern.cseg_wedge_thread", NULL, NULL, &val, sizeof(val)), "wedge child thread");
+ });
+
+ dispatch_semaphore_wait(child_ok, DISPATCH_TIME_FOREVER);
+ sleep(1);
+
+ T_LOG("taking stackshot");
+ take_stackshot(&scenario, false, ^(void *ssbuf, size_t sslen) {
+ int val = 1;
+ T_ASSERT_POSIX_SUCCESS(sysctlbyname("kern.cseg_unwedge_thread", NULL, NULL, &val, sizeof(val)), "unwedge child thread");
+ parse_stackshot(PARSE_STACKSHOT_WAITINFO_CSEG, ssbuf, sslen, @{cseg_expected_threadid_key: @(thread_id)});
+ });
+}
+
+static void
+srp_send(
+ mach_port_t send_port,
+ mach_port_t reply_port,
+ mach_port_t msg_port)
+{
+ kern_return_t ret = 0;
+
+ struct test_msg {
+ mach_msg_header_t header;
+ mach_msg_body_t body;
+ mach_msg_port_descriptor_t port_descriptor;
+ };
+ struct test_msg send_msg = {
+ .header = {
+ .msgh_remote_port = send_port,
+ .msgh_local_port = reply_port,
+ .msgh_bits = MACH_MSGH_BITS_SET(MACH_MSG_TYPE_COPY_SEND,
+ reply_port ? MACH_MSG_TYPE_MAKE_SEND_ONCE : 0,
+ MACH_MSG_TYPE_MOVE_SEND,
+ MACH_MSGH_BITS_COMPLEX),
+ .msgh_id = 0x100,
+ .msgh_size = sizeof(send_msg),
+ },
+ .body = {
+ .msgh_descriptor_count = 1,
+ },
+ .port_descriptor = {
+ .name = msg_port,
+ .disposition = MACH_MSG_TYPE_MOVE_RECEIVE,
+ .type = MACH_MSG_PORT_DESCRIPTOR,
+ },
+ };
+
+ if (msg_port == MACH_PORT_NULL) {
+ send_msg.body.msgh_descriptor_count = 0;
+ }
+
+ ret = mach_msg(&(send_msg.header),
+ MACH_SEND_MSG |
+ MACH_SEND_TIMEOUT |
+ MACH_SEND_OVERRIDE |
+ (reply_port ? MACH_SEND_SYNC_OVERRIDE : 0),
+ send_msg.header.msgh_size,
+ 0,
+ MACH_PORT_NULL,
+ 10000,
+ 0);
+
+ T_ASSERT_MACH_SUCCESS(ret, "client mach_msg");
+}
+
+T_HELPER_DECL(srp_client,
+ "Client used for the special_reply_port test")
+{
+ pid_t ppid = getppid();
+ dispatch_semaphore_t can_continue = dispatch_semaphore_create(0);
+ dispatch_queue_t dq = dispatch_queue_create("client_signalqueue", NULL);
+ dispatch_source_t sig_src;
+
+ mach_msg_return_t mr;
+ mach_port_t service_port;
+ mach_port_t conn_port;
+ mach_port_t special_reply_port;
+ mach_port_options_t opts = {
+ .flags = MPO_INSERT_SEND_RIGHT,
+ };
+
+ signal(SIGUSR1, SIG_IGN);
+ sig_src = dispatch_source_create(DISPATCH_SOURCE_TYPE_SIGNAL, SIGUSR1, 0, dq);
+
+ dispatch_source_set_event_handler(sig_src, ^{
+ dispatch_semaphore_signal(can_continue);
+ });
+ dispatch_activate(sig_src);
+
+ /* lookup the mach service port for the parent */
+ kern_return_t kr = bootstrap_look_up(bootstrap_port,
+ SRP_SERVICE_NAME, &service_port);
+ T_QUIET; T_ASSERT_MACH_SUCCESS(kr, "client bootstrap_look_up");
+
+ /* create the send-once right (special reply port) and message to send to the server */
+ kr = mach_port_construct(mach_task_self(), &opts, 0ull, &conn_port);
+ T_QUIET; T_ASSERT_MACH_SUCCESS(kr, "mach_port_construct");
+
+ special_reply_port = thread_get_special_reply_port();
+ T_QUIET; T_ASSERT_TRUE(MACH_PORT_VALID(special_reply_port), "get_thread_special_reply_port");
+
+ /* send the message with the special reply port */
+ srp_send(service_port, special_reply_port, conn_port);
+
+ /* signal the parent to continue */
+ kill(ppid, SIGUSR1);
+
+ struct {
+ mach_msg_header_t header;
+ mach_msg_body_t body;
+ mach_msg_port_descriptor_t port_descriptor;
+ } rcv_msg = {
+ .header =
+ {
+ .msgh_remote_port = MACH_PORT_NULL,
+ .msgh_local_port = special_reply_port,
+ .msgh_size = sizeof(rcv_msg),
+ },
+ };
+
+ /* wait on the reply from the parent (that we will never receive) */
+ mr = mach_msg(&(rcv_msg.header),
+ (MACH_RCV_MSG | MACH_RCV_SYNC_WAIT),
+ 0,
+ rcv_msg.header.msgh_size,
+ special_reply_port,
+ MACH_MSG_TIMEOUT_NONE,
+ service_port);
+
+ /* not expected to execute as parent will SIGKILL client... */
+ T_LOG("client process exiting after sending message to parent (server)");
+}
+
+enum srp_test_type {
+ SRP_TEST_THREAD, /* expect waiter on current thread */
+ SRP_TEST_PID, /* expect waiter on current PID */
+ SRP_TEST_EITHER, /* waiter could be on either */
+};
+
+static void
+check_srp_test(const char *name, enum srp_test_type ty)
+{
+ struct scenario scenario = {
+ .name = name,
+ .quiet = false,
+ .flags = (STACKSHOT_THREAD_WAITINFO | STACKSHOT_KCDATA_FORMAT),
+ };
+ uint64_t thread_id = 0;
+ pthread_threadid_np(NULL, &thread_id);
+ if (ty == SRP_TEST_THREAD) {
+ take_stackshot(&scenario, false, ^(void *ssbuf, size_t sslen) {
+ parse_stackshot(PARSE_STACKSHOT_WAITINFO_SRP, ssbuf, sslen,
+ @{srp_expected_threadid_key: @(thread_id)});
+ });
+ } else if (ty == SRP_TEST_PID) {
+ take_stackshot(&scenario, false, ^(void *ssbuf, size_t sslen) {
+ parse_stackshot(PARSE_STACKSHOT_WAITINFO_SRP, ssbuf, sslen,
+ @{srp_expected_pid_key: @(getpid())});
+ });
+ } else {
+ take_stackshot(&scenario, false, ^(void *ssbuf, size_t sslen) {
+ parse_stackshot(PARSE_STACKSHOT_WAITINFO_SRP, ssbuf, sslen,
+ @{srp_expected_pid_key: @(getpid()), srp_expected_threadid_key: @(thread_id)});
+ });
+ }
+
+}
+
+
+/*
+ * Tests the stackshot wait info plumbing for synchronous IPC that doesn't use kevent on the server.
+ *
+ * (part 1): tests the scenario where a client sends a request that includes a special reply port
+ * to a server that doesn't receive the message and doesn't copy the send-once right
+ * into its address space as a result. for this case the special reply port is enqueued
+ * in a port and we check which task has that receive right and use that info. (rdar://60440338)
+ * (part 2): tests the scenario where a client sends a request that includes a special reply port
+ * to a server that receives the message and copies in the send-once right, but doesn't
+ * reply to the client. for this case the special reply port is copied out and the kernel
+ * stashes the info about which task copied out the send once right. (rdar://60440592)
+ * (part 3): tests the same as part 2, but uses kevents, which allow for
+ * priority inheritance
+ */
+T_DECL(special_reply_port, "test that tasks using special reply ports have correct waitinfo")
+{
+ dispatch_semaphore_t can_continue = dispatch_semaphore_create(0);
+ dispatch_queue_t dq = dispatch_queue_create("signalqueue", NULL);
+ dispatch_queue_t machdq = dispatch_queue_create("machqueue", NULL);
+ dispatch_source_t sig_src;
+ char path[PATH_MAX];
+ uint32_t path_size = sizeof(path);
+ T_ASSERT_POSIX_ZERO(_NSGetExecutablePath(path, &path_size), "_NSGetExecutablePath");
+ char *client_args[] = { path, "-n", "srp_client", NULL };
+ pid_t client_pid;
+ int sp_ret;
+ kern_return_t kr;
+ mach_port_t port;
+
+ /* setup the signal handler in the parent (server) */
+ T_LOG("setup sig handlers");
+ signal(SIGUSR1, SIG_IGN);
+ sig_src = dispatch_source_create(DISPATCH_SOURCE_TYPE_SIGNAL, SIGUSR1, 0, dq);
+
+ dispatch_source_set_event_handler(sig_src, ^{
+ dispatch_semaphore_signal(can_continue);
+ });
+ dispatch_activate(sig_src);
+
+ /* register with the mach service name so the client can lookup and send a message to the parent (server) */
+ T_LOG("Server about to check in");
+ kr = bootstrap_check_in(bootstrap_port, SRP_SERVICE_NAME, &port);
+ T_ASSERT_MACH_SUCCESS(kr, "server bootstrap_check_in");
+
+ T_LOG("Launching client");
+ sp_ret = posix_spawn(&client_pid, client_args[0], NULL, NULL, client_args, NULL);
+ T_QUIET; T_ASSERT_POSIX_ZERO(sp_ret, "spawned process '%s' with PID %d", client_args[0], client_pid);
+ T_LOG("Spawned client as PID %d", client_pid);
+
+ dispatch_semaphore_wait(can_continue, DISPATCH_TIME_FOREVER);
+ T_LOG("Ready to take stackshot, but waiting 1s for the coast to clear");
+
+ /*
+ * can_continue indicates the client has signaled us, but we want to make
+ * sure they've actually blocked sending their mach message. It's cheesy, but
+ * sleep() works for this.
+ */
+ sleep(1);
+
+ /*
+ * take the stackshot without calling receive to verify that the stackshot wait
+ * info shows our (the server) thread for the scenario where the server has yet to
+ * receive the message.
+ */
+ T_LOG("Taking stackshot for part 1 coverage");
+ check_srp_test("srp", SRP_TEST_THREAD);
+
+ /*
+ * receive the message from the client (which should copy the send once right into
+ * our address space).
+ */
+ struct {
+ mach_msg_header_t header;
+ mach_msg_body_t body;
+ mach_msg_port_descriptor_t port_descriptor;
+ } rcv_msg = {
+ .header =
+ {
+ .msgh_remote_port = MACH_PORT_NULL,
+ .msgh_local_port = port,
+ .msgh_size = sizeof(rcv_msg),
+ },
+ };
+
+ T_LOG("server: starting sync receive\n");
+
+ mach_msg_return_t mr;
+ mr = mach_msg(&(rcv_msg.header),
+ (MACH_RCV_MSG | MACH_RCV_TIMEOUT),
+ 0,
+ 4096,
+ port,
+ 10000,
+ MACH_PORT_NULL);
+ T_QUIET; T_ASSERT_MACH_SUCCESS(mr, "mach_msg() recieve of message from client");
+
+ /*
+ * take the stackshot to verify that the stackshot wait info shows our (the server) PID
+ * for the scenario where the server has received the message and copied in the send-once right.
+ */
+ T_LOG("Taking stackshot for part 2 coverage");
+ check_srp_test("srp", SRP_TEST_PID);
+
+ /* cleanup - kill the client */
+ T_ASSERT_POSIX_SUCCESS(kill(client_pid, SIGKILL), "killing client");
+ T_ASSERT_POSIX_SUCCESS(waitpid(client_pid, NULL, 0), "waiting for the client to exit");
+
+ // do it again, but using kevents
+ T_LOG("Launching client");
+ sp_ret = posix_spawn(&client_pid, client_args[0], NULL, NULL, client_args, NULL);
+ T_QUIET; T_ASSERT_POSIX_ZERO(sp_ret, "spawned process '%s' with PID %d", client_args[0], client_pid);
+ T_LOG("Spawned client as PID %d", client_pid);
+
+ dispatch_semaphore_wait(can_continue, DISPATCH_TIME_FOREVER);
+ T_LOG("Ready to take stackshot, but waiting 1s for the coast to clear");
+
+ /*
+ * can_continue indicates the client has signaled us, but we want to make
+ * sure they've actually blocked sending their mach message. It's cheesy, but
+ * sleep() works for this.
+ */
+ sleep(1);
+
+ dispatch_mach_t dispatch_mach = dispatch_mach_create(SRP_SERVICE_NAME, machdq,
+ ^(dispatch_mach_reason_t reason,
+ dispatch_mach_msg_t message,
+ mach_error_t error __unused) {
+ switch (reason) {
+ case DISPATCH_MACH_MESSAGE_RECEIVED: {
+ size_t size = 0;
+ mach_msg_header_t *msg __unused = dispatch_mach_msg_get_msg(message, &size);
+ T_LOG("server: recieved %ld byte message", size);
+ check_srp_test("turnstile_port_thread", SRP_TEST_THREAD);
+ T_LOG("server: letting client go");
+ // drop the message on the ground, we'll kill the client later
+ dispatch_semaphore_signal(can_continue);
+ break;
+ }
+ default:
+ break;
+ }
+ });
+
+ dispatch_mach_connect(dispatch_mach, port, MACH_PORT_NULL, NULL);
+
+ dispatch_semaphore_wait(can_continue, DISPATCH_TIME_FOREVER);
+
+ /* cleanup - kill the client */
+ T_ASSERT_POSIX_SUCCESS(kill(client_pid, SIGKILL), "killing client");
+ T_ASSERT_POSIX_SUCCESS(waitpid(client_pid, NULL, 0), "waiting for the client to exit");
+}
+
#pragma mark performance tests
#define SHOULD_REUSE_SIZE_HINT 0x01
while (!dt_stat_stable(duration) || !dt_stat_stable(size)) {
__block uint64_t last_time = 0;
__block uint32_t size_hint = 0;
- take_stackshot(&scenario, ^(void *ssbuf, size_t sslen) {
+ take_stackshot(&scenario, false, ^(void *ssbuf, size_t sslen) {
dt_stat_add(size, (double)sslen);
last_time = stackshot_timestamp(ssbuf, sslen);
size_hint = (uint32_t)sslen;
dt_stat_finalize(size);
}
+static void
+stackshot_flag_perf_noclobber(uint64_t flag, char *flagname)
+{
+ struct scenario scenario = {
+ .quiet = true,
+ .flags = (flag | STACKSHOT_KCDATA_FORMAT),
+ };
+
+ dt_stat_t duration = dt_stat_create("nanoseconds per thread", "%s_duration", flagname);
+ dt_stat_t size = dt_stat_create("bytes per thread", "%s_size", flagname);
+ T_LOG("Testing \"%s\" = 0x%" PRIx64, flagname, flag);
+
+ while (!dt_stat_stable(duration) || !dt_stat_stable(size)) {
+ take_stackshot(&scenario, false, ^(void *ssbuf, size_t sslen) {
+ kcdata_iter_t iter = kcdata_iter(ssbuf, sslen);
+ unsigned long no_threads = 0;
+ mach_timebase_info_data_t timebase = {0, 0};
+ uint64_t stackshot_duration = 0;
+ int found = 0;
+ T_QUIET; T_ASSERT_EQ(kcdata_iter_type(iter), KCDATA_BUFFER_BEGIN_STACKSHOT, "stackshot buffer");
+
+ KCDATA_ITER_FOREACH(iter) {
+ switch(kcdata_iter_type(iter)) {
+ case STACKSHOT_KCTYPE_THREAD_SNAPSHOT: {
+ found |= 1;
+ no_threads ++;
+ break;
+ }
+ case STACKSHOT_KCTYPE_STACKSHOT_DURATION: {
+ struct stackshot_duration *ssd = kcdata_iter_payload(iter);
+ stackshot_duration = ssd->stackshot_duration;
+ found |= 2;
+ break;
+ }
+ case KCDATA_TYPE_TIMEBASE: {
+ found |= 4;
+ mach_timebase_info_data_t *tb = kcdata_iter_payload(iter);
+ memcpy(&timebase, tb, sizeof(timebase));
+ break;
+ }
+ }
+ }
+
+ T_QUIET; T_ASSERT_EQ(found, 0x7, "found everything needed");
+
+ uint64_t ns = (stackshot_duration * timebase.numer) / timebase.denom;
+ uint64_t per_thread_ns = ns / no_threads;
+ uint64_t per_thread_size = sslen / no_threads;
+
+ dt_stat_add(duration, per_thread_ns);
+ dt_stat_add(size, per_thread_size);
+ });
+ }
+
+ dt_stat_finalize(duration);
+ dt_stat_finalize(size);
+}
+
+static void
+stackshot_flag_perf(uint64_t flag, char *flagname)
+{
+ /*
+ * STACKSHOT_NO_IO_STATS disables data collection, so set it for
+ * more accurate perfdata collection.
+ */
+ flag |= STACKSHOT_NO_IO_STATS;
+
+ stackshot_flag_perf_noclobber(flag, flagname);
+}
+
+
+T_DECL(flag_perf, "test stackshot performance with different flags set", T_META_TAG_PERF)
+{
+ stackshot_flag_perf_noclobber(STACKSHOT_NO_IO_STATS, "baseline");
+ stackshot_flag_perf_noclobber(0, "io_stats");
+
+ stackshot_flag_perf(STACKSHOT_THREAD_WAITINFO, "thread_waitinfo");
+ stackshot_flag_perf(STACKSHOT_GET_DQ, "get_dq");
+ stackshot_flag_perf(STACKSHOT_SAVE_LOADINFO, "save_loadinfo");
+ stackshot_flag_perf(STACKSHOT_GET_GLOBAL_MEM_STATS, "get_global_mem_stats");
+ stackshot_flag_perf(STACKSHOT_SAVE_KEXT_LOADINFO, "save_kext_loadinfo");
+ stackshot_flag_perf(STACKSHOT_SAVE_IMP_DONATION_PIDS, "save_imp_donation_pids");
+ stackshot_flag_perf(STACKSHOT_ENABLE_BT_FAULTING, "enable_bt_faulting");
+ stackshot_flag_perf(STACKSHOT_COLLECT_SHAREDCACHE_LAYOUT, "collect_sharedcache_layout");
+ stackshot_flag_perf(STACKSHOT_ENABLE_UUID_FAULTING, "enable_uuid_faulting");
+ stackshot_flag_perf(STACKSHOT_THREAD_GROUP, "thread_group");
+ stackshot_flag_perf(STACKSHOT_SAVE_JETSAM_COALITIONS, "save_jetsam_coalitions");
+ stackshot_flag_perf(STACKSHOT_INSTRS_CYCLES, "instrs_cycles");
+ stackshot_flag_perf(STACKSHOT_ASID, "asid");
+}
+
T_DECL(perf_no_size_hint, "test stackshot performance with no size hint",
T_META_TAG_PERF)
{
}
static void
-parse_stackshot(uint64_t stackshot_parsing_flags, void *ssbuf, size_t sslen, int child_pid)
+check_shared_cache_uuid(uuid_t imageUUID)
+{
+ static uuid_t shared_cache_uuid;
+ static dispatch_once_t read_shared_cache_uuid;
+
+ dispatch_once(&read_shared_cache_uuid, ^{
+ T_QUIET;
+ T_ASSERT_TRUE(_dyld_get_shared_cache_uuid(shared_cache_uuid), "retrieve current shared cache UUID");
+ });
+ T_QUIET; T_ASSERT_EQ(uuid_compare(shared_cache_uuid, imageUUID), 0,
+ "dyld returned UUID doesn't match kernel returned UUID for system shared cache");
+}
+
+/*
+ * extra dictionary contains data relevant for the given flags:
+ * PARSE_STACKSHOT_ZOMBIE: zombie_child_pid_key -> @(pid)
+ * PARSE_STACKSHOT_POSTEXEC: postexec_child_unique_pid_key -> @(unique_pid)
+ */
+static void
+parse_stackshot(uint64_t stackshot_parsing_flags, void *ssbuf, size_t sslen, NSDictionary *extra)
{
bool delta = (stackshot_parsing_flags & PARSE_STACKSHOT_DELTA);
+ bool expect_sharedcache_child = (stackshot_parsing_flags & PARSE_STACKSHOT_SHAREDCACHE_FLAGS);
bool expect_zombie_child = (stackshot_parsing_flags & PARSE_STACKSHOT_ZOMBIE);
+ bool expect_postexec_child = (stackshot_parsing_flags & PARSE_STACKSHOT_POSTEXEC);
+ bool expect_cseg_waitinfo = (stackshot_parsing_flags & PARSE_STACKSHOT_WAITINFO_CSEG);
+ bool expect_translated_child = (stackshot_parsing_flags & PARSE_STACKSHOT_TRANSLATED);
bool expect_shared_cache_layout = false;
bool expect_shared_cache_uuid = !delta;
bool expect_dispatch_queue_label = (stackshot_parsing_flags & PARSE_STACKSHOT_DISPATCH_QUEUE_LABEL);
bool expect_turnstile_lock = (stackshot_parsing_flags & PARSE_STACKSHOT_TURNSTILEINFO);
- bool found_zombie_child = false, found_shared_cache_layout = false, found_shared_cache_uuid = false;
+ bool expect_srp_waitinfo = (stackshot_parsing_flags & PARSE_STACKSHOT_WAITINFO_SRP);
+ bool found_zombie_child = false, found_postexec_child = false, found_shared_cache_layout = false, found_shared_cache_uuid = false;
+ bool found_translated_child = false;
bool found_dispatch_queue_label = false, found_turnstile_lock = false;
+ bool found_cseg_waitinfo = false, found_srp_waitinfo = false;
+ bool found_sharedcache_child = false, found_sharedcache_badflags = false, found_sharedcache_self = false;
+ uint64_t srp_expected_threadid = 0;
+ pid_t zombie_child_pid = -1, srp_expected_pid = -1, sharedcache_child_pid = -1;
+ pid_t translated_child_pid = -1;
+ bool sharedcache_child_sameaddr = false;
+ uint64_t postexec_child_unique_pid = 0, cseg_expected_threadid = 0;
+ uint64_t sharedcache_child_flags = 0, sharedcache_self_flags = 0;
+ char *inflatedBufferBase = NULL;
if (expect_shared_cache_uuid) {
uuid_t shared_cache_uuid;
}
}
+ if (expect_sharedcache_child) {
+ NSNumber* pid_num = extra[sharedcache_child_pid_key];
+ NSNumber* sameaddr_num = extra[sharedcache_child_sameaddr_key];
+ T_QUIET; T_ASSERT_NOTNULL(pid_num, "sharedcache child pid provided");
+ T_QUIET; T_ASSERT_NOTNULL(sameaddr_num, "sharedcache child addrsame provided");
+ sharedcache_child_pid = [pid_num intValue];
+ T_QUIET; T_ASSERT_GT(sharedcache_child_pid, 0, "sharedcache child pid greater than zero");
+ sharedcache_child_sameaddr = [sameaddr_num intValue];
+ T_QUIET; T_ASSERT_GE([sameaddr_num intValue], 0, "sharedcache child sameaddr is boolean (0 or 1)");
+ T_QUIET; T_ASSERT_LE([sameaddr_num intValue], 1, "sharedcache child sameaddr is boolean (0 or 1)");
+ }
if (expect_zombie_child) {
- T_QUIET; T_ASSERT_GT(child_pid, 0, "child pid greater than zero");
+ NSNumber* pid_num = extra[zombie_child_pid_key];
+ T_QUIET; T_ASSERT_NOTNULL(pid_num, "zombie child pid provided");
+ zombie_child_pid = [pid_num intValue];
+ T_QUIET; T_ASSERT_GT(zombie_child_pid, 0, "zombie child pid greater than zero");
+ }
+
+ if (expect_postexec_child) {
+ NSNumber* unique_pid_num = extra[postexec_child_unique_pid_key];
+ T_QUIET; T_ASSERT_NOTNULL(unique_pid_num, "postexec child unique pid provided");
+ postexec_child_unique_pid = [unique_pid_num unsignedLongLongValue];
+ T_QUIET; T_ASSERT_GT(postexec_child_unique_pid, 0ull, "postexec child unique pid greater than zero");
+ }
+
+ if (expect_cseg_waitinfo) {
+ NSNumber* tid_num = extra[cseg_expected_threadid_key];
+ T_QUIET; T_ASSERT_NOTNULL(tid_num, "cseg's expected thread id provided");
+ cseg_expected_threadid = tid_num.unsignedLongValue;
+ T_QUIET; T_ASSERT_GT(cseg_expected_threadid, UINT64_C(0), "compressor segment thread is present");
+ }
+
+ if (expect_srp_waitinfo) {
+ NSNumber* threadid_num = extra[srp_expected_threadid_key];
+ NSNumber* pid_num = extra[srp_expected_pid_key];
+ T_QUIET; T_ASSERT_TRUE(threadid_num != nil || pid_num != nil, "expected SRP threadid or pid");
+ if (threadid_num != nil) {
+ srp_expected_threadid = [threadid_num unsignedLongLongValue];
+ T_QUIET; T_ASSERT_GT(srp_expected_threadid, 0ull, "srp_expected_threadid greater than zero");
+ }
+ if (pid_num != nil) {
+ srp_expected_pid = [pid_num intValue];
+ T_QUIET; T_ASSERT_GT(srp_expected_pid, 0, "srp_expected_pid greater than zero");
+ }
+ T_LOG("looking for SRP pid: %d threadid: %llu", srp_expected_pid, srp_expected_threadid);
+ }
+
+ if (expect_translated_child) {
+ NSNumber* pid_num = extra[translated_child_pid_key];
+ T_QUIET; T_ASSERT_NOTNULL(pid_num, "translated child pid provided");
+ translated_child_pid = [pid_num intValue];
+ T_QUIET; T_ASSERT_GT(translated_child_pid, 0, "translated child pid greater than zero");
}
kcdata_iter_t iter = kcdata_iter(ssbuf, sslen);
if (delta) {
T_ASSERT_EQ(kcdata_iter_type(iter), KCDATA_BUFFER_BEGIN_DELTA_STACKSHOT,
"buffer provided is a delta stackshot");
+
+ iter = kcdata_iter_next(iter);
} else {
- T_ASSERT_EQ(kcdata_iter_type(iter), KCDATA_BUFFER_BEGIN_STACKSHOT,
- "buffer provided is a stackshot");
+ if (kcdata_iter_type(iter) != KCDATA_BUFFER_BEGIN_COMPRESSED) {
+ T_ASSERT_EQ(kcdata_iter_type(iter), KCDATA_BUFFER_BEGIN_STACKSHOT,
+ "buffer provided is a stackshot");
+
+ iter = kcdata_iter_next(iter);
+ } else {
+ /* we are dealing with a compressed buffer */
+ iter = kcdata_iter_next(iter);
+ uint64_t compression_type = 0, totalout = 0, totalin = 0;
+
+ uint64_t *data;
+ char *desc;
+ for (int i = 0; i < 3; i ++) {
+ kcdata_iter_get_data_with_desc(iter, &desc, (void **)&data, NULL);
+ if (strcmp(desc, "kcd_c_type") == 0) {
+ compression_type = *data;
+ } else if (strcmp(desc, "kcd_c_totalout") == 0){
+ totalout = *data;
+ } else if (strcmp(desc, "kcd_c_totalin") == 0){
+ totalin = *data;
+ }
+
+ iter = kcdata_iter_next(iter);
+ }
+
+ T_ASSERT_EQ(compression_type, UINT64_C(1), "zlib compression is used");
+ T_ASSERT_GT(totalout, UINT64_C(0), "successfully gathered how long the compressed buffer is");
+ T_ASSERT_GT(totalin, UINT64_C(0), "successfully gathered how long the uncompressed buffer will be at least");
+
+ /* progress to the next kcdata item */
+ T_ASSERT_EQ(kcdata_iter_type(iter), KCDATA_BUFFER_BEGIN_STACKSHOT, "compressed stackshot found");
+
+ char *bufferBase = kcdata_iter_payload(iter);
+
+ /*
+ * zlib is used, allocate a buffer based on the metadata, plus
+ * extra scratch space (+12.5%) in case totalin was inconsistent
+ */
+ size_t inflatedBufferSize = totalin + (totalin >> 3);
+ inflatedBufferBase = malloc(inflatedBufferSize);
+ T_QUIET; T_WITH_ERRNO; T_ASSERT_NOTNULL(inflatedBufferBase, "allocated temporary output buffer");
+
+ z_stream zs;
+ memset(&zs, 0, sizeof(zs));
+ T_QUIET; T_ASSERT_EQ(inflateInit(&zs), Z_OK, "inflateInit OK");
+ zs.next_in = (unsigned char *)bufferBase;
+ T_QUIET; T_ASSERT_LE(totalout, (uint64_t)UINT_MAX, "stackshot is not too large");
+ zs.avail_in = (uInt)totalout;
+ zs.next_out = (unsigned char *)inflatedBufferBase;
+ T_QUIET; T_ASSERT_LE(inflatedBufferSize, (size_t)UINT_MAX, "output region is not too large");
+ zs.avail_out = (uInt)inflatedBufferSize;
+ T_ASSERT_EQ(inflate(&zs, Z_FINISH), Z_STREAM_END, "inflated buffer");
+ inflateEnd(&zs);
+
+ T_ASSERT_EQ((uint64_t)zs.total_out, totalin, "expected number of bytes inflated");
+
+ /* copy the data after the compressed area */
+ T_QUIET; T_ASSERT_GE((void *)bufferBase, ssbuf,
+ "base of compressed stackshot is after the returned stackshot buffer");
+ size_t header_size = (size_t)(bufferBase - (char *)ssbuf);
+ size_t data_after_compressed_size = sslen - totalout - header_size;
+ T_QUIET; T_ASSERT_LE(data_after_compressed_size,
+ inflatedBufferSize - zs.total_out,
+ "footer fits in the buffer");
+ memcpy(inflatedBufferBase + zs.total_out,
+ bufferBase + totalout,
+ data_after_compressed_size);
+
+ iter = kcdata_iter(inflatedBufferBase, inflatedBufferSize);
+ }
}
- iter = kcdata_iter_next(iter);
KCDATA_ITER_FOREACH(iter) {
NSError *error = nil;
T_QUIET; T_ASSERT_NOTNULL(container, "parsed container from stackshot");
T_QUIET; T_ASSERT_NULL(error, "error unset after parsing container");
+ NSDictionary* task_snapshot = container[@"task_snapshots"][@"task_snapshot"];
+ NSDictionary* task_delta_snapshot = container[@"task_snapshots"][@"task_delta_snapshot"];
+
+ T_QUIET; T_ASSERT_TRUE(!!task_snapshot != !!task_delta_snapshot, "Either task_snapshot xor task_delta_snapshot provided");
+
if (expect_dispatch_queue_label && !found_dispatch_queue_label) {
for (id thread_key in container[@"task_snapshots"][@"thread_snapshots"]) {
NSMutableDictionary *thread = container[@"task_snapshots"][@"thread_snapshots"][thread_key];
}
}
}
+
+ if (expect_postexec_child && !found_postexec_child) {
+ if (task_snapshot) {
+ uint64_t unique_pid = [task_snapshot[@"ts_unique_pid"] unsignedLongLongValue];
+ if (unique_pid == postexec_child_unique_pid) {
+ found_postexec_child = true;
+
+ T_PASS("post-exec child %llu has a task snapshot", postexec_child_unique_pid);
+
+ break;
+ }
+ }
+
+ if (task_delta_snapshot) {
+ uint64_t unique_pid = [task_delta_snapshot[@"tds_unique_pid"] unsignedLongLongValue];
+ if (unique_pid == postexec_child_unique_pid) {
+ found_postexec_child = true;
+
+ T_FAIL("post-exec child %llu shouldn't have a delta task snapshot", postexec_child_unique_pid);
+
+ break;
+ }
+ }
+ }
+
+ if (!task_snapshot) {
+ break;
+ }
- int pid = [container[@"task_snapshots"][@"task_snapshot"][@"ts_pid"] intValue];
- if (expect_zombie_child && (pid == child_pid)) {
- found_zombie_child = true;
+ int pid = [task_snapshot[@"ts_pid"] intValue];
- uint64_t task_flags = [container[@"task_snapshots"][@"task_snapshot"][@"ts_ss_flags"] unsignedLongLongValue];
- T_ASSERT_TRUE((task_flags & kTerminatedSnapshot) == kTerminatedSnapshot, "child zombie marked as terminated");
+ if (pid && expect_shared_cache_uuid && !found_shared_cache_uuid) {
+ id ptr = container[@"task_snapshots"][@"shared_cache_dyld_load_info"];
+ if (ptr) {
+ id uuid = ptr[@"imageUUID"];
- continue;
- } else if (pid != getpid()) {
- break;
+ uint8_t uuid_p[16];
+ for (unsigned int i = 0; i < 16; i ++) {
+ NSNumber *uuidByte = uuid[i];
+ uuid_p[i] = (uint8_t)uuidByte.charValue;
+ }
+
+ check_shared_cache_uuid(uuid_p);
+
+ uint64_t baseAddress = (uint64_t)((NSNumber *)ptr[@"imageSlidBaseAddress"]).longLongValue;
+ uint64_t firstMapping = (uint64_t)((NSNumber *)ptr[@"sharedCacheSlidFirstMapping"]).longLongValue;
+
+ T_ASSERT_LE(baseAddress, firstMapping,
+ "in per-task shared_cache_dyld_load_info, "
+ "baseAddress <= firstMapping");
+ T_ASSERT_GE(baseAddress + (1ull << 29), firstMapping,
+ "in per-task shared_cache_dyld_load_info, "
+ "baseAddress + 512meg >= firstMapping");
+
+ size_t shared_cache_len;
+ const void *addr = _dyld_get_shared_cache_range(&shared_cache_len);
+ T_ASSERT_EQ((uint64_t)addr, firstMapping,
+ "SlidFirstMapping should match shared_cache_range");
+
+ /*
+ * check_shared_cache_uuid() will assert on failure, so if
+ * we get here, then we have found the shared cache UUID
+ * and it's correct
+ */
+ found_shared_cache_uuid = true;
+ }
+ }
+ if (expect_sharedcache_child) {
+ uint64_t task_flags = [task_snapshot[@"ts_ss_flags"] unsignedLongLongValue];
+ uint64_t sharedregion_flags = (task_flags & (kTaskSharedRegionNone | kTaskSharedRegionSystem | kTaskSharedRegionOther));
+ id sharedregion_info = container[@"task_snapshots"][@"shared_cache_dyld_load_info"];
+ if (!found_sharedcache_badflags) {
+ T_QUIET; T_ASSERT_NE(sharedregion_flags, 0ll, "one of the kTaskSharedRegion flags should be set on all tasks");
+ bool multiple = (sharedregion_flags & (sharedregion_flags - 1)) != 0;
+ T_QUIET; T_ASSERT_FALSE(multiple, "only one kTaskSharedRegion flag should be set on each task");
+ found_sharedcache_badflags = (sharedregion_flags == 0 || multiple);
+ }
+ if (pid == 0) {
+ T_ASSERT_EQ(sharedregion_flags, (uint64_t)kTaskSharedRegionNone, "Kernel proc (pid 0) should have no shared region");
+ } else if (pid == sharedcache_child_pid) {
+ found_sharedcache_child = true;
+ sharedcache_child_flags = sharedregion_flags;
+ } else if (pid == getpid()) {
+ found_sharedcache_self = true;
+ sharedcache_self_flags = sharedregion_flags;
+ }
+ if (sharedregion_flags == kTaskSharedRegionOther && !(task_flags & kTaskSharedRegionInfoUnavailable)) {
+ T_QUIET; T_ASSERT_NOTNULL(sharedregion_info, "kTaskSharedRegionOther should have a shared_cache_dyld_load_info struct");
+ } else {
+ T_QUIET; T_ASSERT_NULL(sharedregion_info, "expect no shared_cache_dyld_load_info struct");
+ }
+ }
+ if (expect_zombie_child && (pid == zombie_child_pid)) {
+ found_zombie_child = true;
+
+ uint64_t task_flags = [task_snapshot[@"ts_ss_flags"] unsignedLongLongValue];
+ T_ASSERT_TRUE((task_flags & kTerminatedSnapshot) == kTerminatedSnapshot, "child zombie marked as terminated");
+
+ continue;
+ }
+
+ if (expect_translated_child && (pid == translated_child_pid)) {
+ found_translated_child = true;
+
+ uint64_t task_flags = [task_snapshot[@"ts_ss_flags"] unsignedLongLongValue];
+ T_EXPECT_BITS_SET(task_flags, kTaskIsTranslated, "child marked as translated");
+
+ continue;
+ }
+
+ if (expect_cseg_waitinfo) {
+ NSArray *winfos = container[@"task_snapshots"][@"thread_waitinfo"];
+
+ for (id i in winfos) {
+ NSNumber *waitType = i[@"wait_type"];
+ NSNumber *owner = i[@"owner"];
+ if (waitType.intValue == kThreadWaitCompressor &&
+ owner.unsignedLongValue == cseg_expected_threadid) {
+ found_cseg_waitinfo = true;
+ break;
+ }
+ }
+ }
+
+ if (expect_srp_waitinfo) {
+ NSArray *tinfos = container[@"task_snapshots"][@"thread_turnstileinfo"];
+ NSArray *winfos = container[@"task_snapshots"][@"thread_waitinfo"];
+ for (id i in tinfos) {
+ if (!found_srp_waitinfo) {
+ bool found_thread = false;
+ bool found_pid = false;
+ if (([i[@"turnstile_flags"] intValue] & STACKSHOT_TURNSTILE_STATUS_THREAD) &&
+ [i[@"turnstile_context"] unsignedLongLongValue] == srp_expected_threadid &&
+ srp_expected_threadid != 0) {
+ found_thread = true;
+ }
+ if (([i[@"turnstile_flags"] intValue] & STACKSHOT_TURNSTILE_STATUS_BLOCKED_ON_TASK) &&
+ [i[@"turnstile_context"] intValue] == srp_expected_pid &&
+ srp_expected_pid != -1) {
+ found_pid = true;
+ }
+ if (found_pid || found_thread) {
+ T_LOG("found SRP %s %lld waiter: %d", (found_thread ? "thread" : "pid"),
+ [i[@"turnstile_context"] unsignedLongLongValue], [i[@"waiter"] intValue]);
+ /* we found something that is blocking the correct threadid */
+ for (id j in winfos) {
+ if ([j[@"waiter"] intValue] == [i[@"waiter"] intValue] &&
+ [j[@"wait_type"] intValue] == kThreadWaitPortReceive) {
+ found_srp_waitinfo = true;
+ break;
+ }
+ }
+
+ if (found_srp_waitinfo) {
+ break;
+ }
+ }
+ }
+ }
}
+ if (pid != getpid()) {
+ break;
+ }
+
T_EXPECT_EQ_STR(current_process_name(),
- [container[@"task_snapshots"][@"task_snapshot"][@"ts_p_comm"] UTF8String],
+ [task_snapshot[@"ts_p_comm"] UTF8String],
"current process name matches in stackshot");
- uint64_t task_flags = [container[@"task_snapshots"][@"task_snapshot"][@"ts_ss_flags"] unsignedLongLongValue];
- T_ASSERT_FALSE((task_flags & kTerminatedSnapshot) == kTerminatedSnapshot, "current process not marked as terminated");
+ uint64_t task_flags = [task_snapshot[@"ts_ss_flags"] unsignedLongLongValue];
+ T_ASSERT_BITS_NOTSET(task_flags, kTerminatedSnapshot, "current process not marked as terminated");
+ T_ASSERT_BITS_NOTSET(task_flags, kTaskIsTranslated, "current process not marked as translated");
T_QUIET;
- T_EXPECT_LE(pid, [container[@"task_snapshots"][@"task_snapshot"][@"ts_unique_pid"] intValue],
+ T_EXPECT_LE(pid, [task_snapshot[@"ts_unique_pid"] intValue],
"unique pid is greater than pid");
+ NSDictionary* task_cpu_architecture = container[@"task_snapshots"][@"task_cpu_architecture"];
+ T_QUIET; T_ASSERT_NOTNULL(task_cpu_architecture[@"cputype"], "have cputype");
+ T_QUIET; T_ASSERT_NOTNULL(task_cpu_architecture[@"cpusubtype"], "have cputype");
+ int cputype = [task_cpu_architecture[@"cputype"] intValue];
+ int cpusubtype = [task_cpu_architecture[@"cpusubtype"] intValue];
+
+ struct proc_archinfo archinfo;
+ int retval = proc_pidinfo(pid, PROC_PIDARCHINFO, 0, &archinfo, sizeof(archinfo));
+ T_QUIET; T_WITH_ERRNO; T_ASSERT_GT(retval, 0, "proc_pidinfo(PROC_PIDARCHINFO) returned a value > 0");
+ T_QUIET; T_ASSERT_EQ(retval, (int)sizeof(struct proc_archinfo), "proc_pidinfo call for PROC_PIDARCHINFO returned expected size");
+ T_QUIET; T_EXPECT_EQ(cputype, archinfo.p_cputype, "cpu type is correct");
+ T_QUIET; T_EXPECT_EQ(cpusubtype, archinfo.p_cpusubtype, "cpu subtype is correct");
+
bool found_main_thread = false;
- uint64_t main_thread_id = -1;
+ uint64_t main_thread_id = -1ULL;
+ bool found_null_kernel_frame = false;
for (id thread_key in container[@"task_snapshots"][@"thread_snapshots"]) {
NSMutableDictionary *thread = container[@"task_snapshots"][@"thread_snapshots"][thread_key];
NSDictionary *thread_snap = thread[@"thread_snapshot"];
NSString *pth_name = thread[@"pth_name"];
if (pth_name != nil && [pth_name isEqualToString:@TEST_THREAD_NAME]) {
found_main_thread = true;
- main_thread_id = [thread_snap[@"ths_thread_id"] intValue];
+ main_thread_id = [thread_snap[@"ths_thread_id"] unsignedLongLongValue];
T_QUIET; T_EXPECT_GT([thread_snap[@"ths_total_syscalls"] intValue], 0,
"total syscalls of current thread is valid");
[cpu_times[@"user_time"] intValue],
"runnable time of current thread is valid");
}
+ if (!found_null_kernel_frame) {
+ for (NSNumber *frame in thread[@"kernel_frames"]) {
+ if (frame.unsignedLongValue == 0) {
+ found_null_kernel_frame = true;
+ break;
+ }
+ }
+ }
}
T_EXPECT_TRUE(found_main_thread, "found main thread for current task in stackshot");
+ T_EXPECT_FALSE(found_null_kernel_frame, "should not see any NULL kernel frames");
if (expect_turnstile_lock && !found_turnstile_lock) {
NSArray *tsinfos = container[@"task_snapshots"][@"thread_turnstileinfo"];
for (id i in tsinfos) {
- if ([i[@"turnstile_context"] intValue] == main_thread_id) {
+ if ([i[@"turnstile_context"] unsignedLongLongValue] == main_thread_id) {
found_turnstile_lock = true;
break;
}
break;
}
case STACKSHOT_KCTYPE_SHAREDCACHE_LOADINFO: {
- struct dyld_uuid_info_64_v2 *shared_cache_info = kcdata_iter_payload(iter);
- uuid_t shared_cache_uuid;
- T_QUIET; T_ASSERT_TRUE(_dyld_get_shared_cache_uuid(shared_cache_uuid), "retrieve current shared cache UUID");
- T_QUIET; T_ASSERT_EQ(memcmp(shared_cache_info->imageUUID, shared_cache_uuid, sizeof(shared_cache_uuid)), 0,
- "dyld returned UUID doesn't match kernel returned UUID for system shared cache");
+ struct dyld_shared_cache_loadinfo *payload = kcdata_iter_payload(iter);
+ T_ASSERT_EQ((size_t)kcdata_iter_size(iter), sizeof(*payload), "valid dyld_shared_cache_loadinfo struct");
+
+ check_shared_cache_uuid(payload->sharedCacheUUID);
+
+ T_ASSERT_LE(payload->sharedCacheUnreliableSlidBaseAddress,
+ payload->sharedCacheSlidFirstMapping,
+ "SlidBaseAddress <= SlidFirstMapping");
+ T_ASSERT_GE(payload->sharedCacheUnreliableSlidBaseAddress + (1ull << 29),
+ payload->sharedCacheSlidFirstMapping,
+ "SlidFirstMapping should be within 512megs of SlidBaseAddress");
+
+ size_t shared_cache_len;
+ const void *addr = _dyld_get_shared_cache_range(&shared_cache_len);
+ T_ASSERT_EQ((uint64_t)addr, payload->sharedCacheSlidFirstMapping,
+ "SlidFirstMapping should match shared_cache_range");
+
+ /*
+ * check_shared_cache_uuid() asserts on failure, so we must have
+ * found the shared cache UUID to be correct.
+ */
found_shared_cache_uuid = true;
break;
}
}
}
+ if (expect_sharedcache_child) {
+ T_QUIET; T_ASSERT_TRUE(found_sharedcache_child, "found sharedcache child in kcdata");
+ T_QUIET; T_ASSERT_TRUE(found_sharedcache_self, "found self in kcdata");
+ if (found_sharedcache_child && found_sharedcache_self) {
+ T_QUIET; T_ASSERT_NE(sharedcache_child_flags, (uint64_t)kTaskSharedRegionNone, "sharedcache child should have shared region");
+ T_QUIET; T_ASSERT_NE(sharedcache_self_flags, (uint64_t)kTaskSharedRegionNone, "sharedcache: self should have shared region");
+ if (sharedcache_self_flags == kTaskSharedRegionSystem && !sharedcache_child_sameaddr) {
+ /* If we're in the system shared region, and the child has a different address, child must have an Other shared region */
+ T_ASSERT_EQ(sharedcache_child_flags, (uint64_t)kTaskSharedRegionOther,
+ "sharedcache child should have Other shared region");
+ }
+ }
+ }
if (expect_zombie_child) {
T_QUIET; T_ASSERT_TRUE(found_zombie_child, "found zombie child in kcdata");
}
+ if (expect_postexec_child) {
+ T_QUIET; T_ASSERT_TRUE(found_postexec_child, "found post-exec child in kcdata");
+ }
+
+ if (expect_translated_child) {
+ T_QUIET; T_ASSERT_TRUE(found_translated_child, "found translated child in kcdata");
+ }
+
if (expect_shared_cache_layout) {
T_QUIET; T_ASSERT_TRUE(found_shared_cache_layout, "shared cache layout found in kcdata");
}
T_QUIET; T_ASSERT_TRUE(found_turnstile_lock, "found expected deadlock");
}
+ if (expect_cseg_waitinfo) {
+ T_QUIET; T_ASSERT_TRUE(found_cseg_waitinfo, "found c_seg waitinfo");
+ }
+
+ if (expect_srp_waitinfo) {
+ T_QUIET; T_ASSERT_TRUE(found_srp_waitinfo, "found special reply port waitinfo");
+ }
+
T_ASSERT_FALSE(KCDATA_ITER_FOREACH_FAILED(iter), "successfully iterated kcdata");
+
+ free(inflatedBufferBase);
}
static const char *
projects / apple / xnu.git / blobdiff