void
telemetry_task_ctl_locked(task_t task, uint32_t reasons, int enable_disable)
{
uint32_t origflags;
assert((reasons != 0) && ((reasons | TF_TELEMETRY) == TF_TELEMETRY));
task_lock_assert_owned(task);
origflags = task->t_flags;
if (enable_disable == 1) {
task->t_flags |= reasons;
if ((origflags & TF_TELEMETRY) == 0) {
OSIncrementAtomic(&telemetry_active_tasks);
#if TELEMETRY_DEBUG
printf("%s: telemetry OFF -> ON (%d active)\n", proc_name_address(task->bsd_info), telemetry_active_tasks);
#endif
}
} else {
task->t_flags &= ~reasons;
if (((origflags & TF_TELEMETRY) != 0) && ((task->t_flags & TF_TELEMETRY) == 0)) {
/*
* If this task went from having at least one telemetry bit to having none,
* the net change was to disable telemetry for the task.
*/
OSDecrementAtomic(&telemetry_active_tasks);
#if TELEMETRY_DEBUG
printf("%s: telemetry ON -> OFF (%d active)\n", proc_name_address(task->bsd_info), telemetry_active_tasks);
#endif
}
}
}
static void
ktrace_set_owning_proc(proc_t p)
{
lck_mtx_assert(ktrace_lock, LCK_MTX_ASSERT_OWNED);
assert(p);
if (ktrace_state != KTRACE_STATE_FG) {
if (proc_uniqueid(p) == ktrace_bg_unique_id) {
ktrace_state = KTRACE_STATE_BG;
} else {
if (ktrace_state == KTRACE_STATE_BG) {
if (ktrace_active_mask & KTRACE_KPERF) {
kperf_reset();
}
if (ktrace_active_mask & KTRACE_KDEBUG) {
kdebug_reset();
}
ktrace_active_mask = 0;
}
ktrace_state = KTRACE_STATE_FG;
should_notify_on_init = FALSE;
}
}
ktrace_owning_unique_id = proc_uniqueid(p);
ktrace_owning_pid = proc_pid(p);
strlcpy(ktrace_last_owner_execname, proc_name_address(p),
sizeof(ktrace_last_owner_execname));
}
static void
panic_display_process_name(void) {
char proc_name[32] = "Unknown";
task_t ctask = 0;
void *cbsd_info = 0;
if (ml_nofault_copy((vm_offset_t)¤t_thread()->task, (vm_offset_t) &ctask, sizeof(task_t)) == sizeof(task_t))
if(ml_nofault_copy((vm_offset_t)&ctask->bsd_info, (vm_offset_t)&cbsd_info, sizeof(&ctask->bsd_info)) == sizeof(&ctask->bsd_info))
if (cbsd_info && (ml_nofault_copy((vm_offset_t) proc_name_address(cbsd_info), (vm_offset_t) &proc_name, sizeof(proc_name)) > 0))
proc_name[sizeof(proc_name) - 1] = '\0';
kdb_printf("\nBSD process name corresponding to current thread: %s\n", proc_name);
}
static void
panic_display_process_name(void) {
/* because of scoping issues len(p_comm) from proc_t is hard coded here */
char proc_name[17] = "Unknown";
task_t ctask = 0;
void *cbsd_info = 0;
if (ml_nofault_copy((vm_offset_t)¤t_thread()->task, (vm_offset_t) &ctask, sizeof(task_t)) == sizeof(task_t))
if(ml_nofault_copy((vm_offset_t)&ctask->bsd_info, (vm_offset_t)&cbsd_info, sizeof(cbsd_info)) == sizeof(cbsd_info))
if (cbsd_info && (ml_nofault_copy((vm_offset_t) proc_name_address(cbsd_info), (vm_offset_t) &proc_name, sizeof(proc_name)) > 0))
proc_name[sizeof(proc_name) - 1] = '\0';
kdb_printf("\nBSD process name corresponding to current thread: %s\n", proc_name);
}
/**
* panic_backlog
*/
void panic_backlog(uint32_t stackptr)
{
#ifndef __LP64__
thread_t currthr = current_thread();
/*
* Make sure the crash is after we set the first thread.
*/
if (!currthr) {
kprintf("panicked thread: %p, backtrace: 0x%08x\n", currthr, stackptr);
panic_arm_thread_backtrace(stackptr, 32, NULL, FALSE, NULL, TRUE, "");
return;
}
task_t task = currthr->task;
/*
* If the task is null, return...
*/
if (!task) {
kprintf("panicked thread: %p, backtrace: 0x%08x\n", currthr, stackptr);
panic_arm_thread_backtrace(stackptr, 32, NULL, FALSE, NULL, TRUE, "");
return;
}
char *name;
if (task->bsd_info && (name = proc_name_address(task->bsd_info))) {
/*
*/
} else {
name = (char *) "unknown task";
}
kext_dump_panic_lists(&kdb_printf);
kdb_printf("\nPanicked task %p: %d pages, %d threads: pid %d: %s\n"
"panicked thread: %p, backtrace: 0x%08x\n", task,
task->all_image_info_size, task->thread_count,
(task->bsd_info != NULL) ? proc_pid(task->bsd_info) : 0, name,
currthr, stackptr);
panic_arm_thread_backtrace(stackptr, 32, NULL, FALSE, NULL, TRUE, "");
if ((currthr->machine.uss == &currthr->machine.user_regs)
&& currthr->machine.uss->pc) {
kdb_printf("%s\tuser state:\n", "");
kdb_printf("%s\t r0: 0x%08x r1: 0x%08x r2: 0x%08x r3: 0x%08x\n"
"%s\t r4: 0x%08x r5: 0x%08x r6: 0x%08x r7: 0x%08x\n"
"%s\t r8: 0x%08x r9: 0x%08x r10: 0x%08x r11: 0x%08x\n"
"%s\t r12: 0x%08x sp: 0x%08x lr: 0x%08x pc: 0x%08x\n"
"%s\tcpsr: 0x%08x fsr: 0x%08x far: 0x%08x\n",
"", currthr->machine.uss->r[0], currthr->machine.uss->r[1],
currthr->machine.uss->r[2], currthr->machine.uss->r[3], "",
currthr->machine.uss->r[4], currthr->machine.uss->r[5],
currthr->machine.uss->r[6], currthr->machine.uss->r[7], "",
currthr->machine.uss->r[8], currthr->machine.uss->r[9],
currthr->machine.uss->r[10], currthr->machine.uss->r[11], "",
currthr->machine.uss->r[12], currthr->machine.uss->sp,
currthr->machine.uss->lr, currthr->machine.uss->pc, "",
currthr->machine.uss->cpsr, 0, 0);
}
if (panicDebugging) {
print_threads(stackptr);
} else {
kdb_printf("\n");
queue_head_t *task_list = &tasks;
task_t task = TASK_NULL;
queue_iterate(task_list, task, task_t, tasks) {
char *name;
if (task->bsd_info && (name = proc_name_address(task->bsd_info))) {
/*
*/
} else {
name = (char *) "unknown task";
}
if (task == currthr->task)
continue;
kdb_printf("Task 0x%x: %d pages, %d threads: pid %d: %s\n", task,
task->all_image_info_size, task->thread_count,
(task->bsd_info != NULL) ? proc_pid(task->bsd_info) : 0,
name);
}
}