1336 	if (!tsk->mm || !tsk->mm->uprobes_state.xol_area || !tsk->utask)  in xol_free_insn_slot()
1339 	slot_addr = tsk->utask->xol_vaddr;  in xol_free_insn_slot()
1360 		tsk->utask->xol_vaddr = 0;  in xol_free_insn_slot()
1392 	struct uprobe_task *utask = current->utask;  in uprobe_get_trap_addr()  local
1394 	if (unlikely(utask && utask->active_uprobe))  in uprobe_get_trap_addr()
1395 		return utask->vaddr;  in uprobe_get_trap_addr()
1414 	struct uprobe_task *utask = t->utask;  in uprobe_free_utask()  local
1417 	if (!utask)  in uprobe_free_utask()
1420 	if (utask->active_uprobe)  in uprobe_free_utask()
1421 		put_uprobe(utask->active_uprobe);  in uprobe_free_utask()
1423 	ri = utask->return_instances;  in uprobe_free_utask()
1428 	kfree(utask);  in uprobe_free_utask()
1429 	t->utask = NULL;  in uprobe_free_utask()
1442 	if (!current->utask)  in get_utask()
1443 		current->utask = kzalloc(sizeof(struct uprobe_task), GFP_KERNEL);  in get_utask()
1444 	return current->utask;  in get_utask()
1455 	t->utask = n_utask;  in dup_utask()
1486 	if (!__create_xol_area(current->utask->dup_xol_addr) &&  in dup_xol_work()
1496 	struct uprobe_task *utask = current->utask;  in uprobe_copy_process()  local
1500 	t->utask = NULL;  in uprobe_copy_process()
1502 	if (!utask || !utask->return_instances)  in uprobe_copy_process()
1508 	if (dup_utask(t, utask))  in uprobe_copy_process()
1519 	t->utask->dup_xol_addr = area->vaddr;  in uprobe_copy_process()
1520 	init_task_work(&t->utask->dup_xol_work, dup_xol_work);  in uprobe_copy_process()
1521 	task_work_add(t, &t->utask->dup_xol_work, true);  in uprobe_copy_process()
1543 static void cleanup_return_instances(struct uprobe_task *utask, bool chained,  in cleanup_return_instances()  argument
1546 	struct return_instance *ri = utask->return_instances;  in cleanup_return_instances()
1551 		utask->depth--;  in cleanup_return_instances()
1553 	utask->return_instances = ri;  in cleanup_return_instances()
1559 	struct uprobe_task *utask;  in prepare_uretprobe()  local
1566 	utask = get_utask();  in prepare_uretprobe()
1567 	if (!utask)  in prepare_uretprobe()
1570 	if (utask->depth >= MAX_URETPROBE_DEPTH) {  in prepare_uretprobe()
1588 	cleanup_return_instances(utask, chained, regs);  in prepare_uretprobe()
1596 		if (!utask->return_instances) {  in prepare_uretprobe()
1604 		orig_ret_vaddr = utask->return_instances->orig_ret_vaddr;  in prepare_uretprobe()
1613 	utask->depth++;  in prepare_uretprobe()
1614 	ri->next = utask->return_instances;  in prepare_uretprobe()
1615 	utask->return_instances = ri;  in prepare_uretprobe()
1626 	struct uprobe_task *utask;  in pre_ssout()  local
1630 	utask = get_utask();  in pre_ssout()
1631 	if (!utask)  in pre_ssout()
1638 	utask->xol_vaddr = xol_vaddr;  in pre_ssout()
1639 	utask->vaddr = bp_vaddr;  in pre_ssout()
1647 	utask->active_uprobe = uprobe;  in pre_ssout()
1648 	utask->state = UTASK_SSTEP;  in pre_ssout()
1664 	struct uprobe_task *utask = t->utask;  in uprobe_deny_signal()  local
1666 	if (likely(!utask || !utask->active_uprobe))  in uprobe_deny_signal()
1669 	WARN_ON_ONCE(utask->state != UTASK_SSTEP);  in uprobe_deny_signal()
1677 			utask->state = UTASK_SSTEP_TRAPPED;  in uprobe_deny_signal()
1825 	struct uprobe_task *utask;  in handle_trampoline()  local
1829 	utask = current->utask;  in handle_trampoline()
1830 	if (!utask)  in handle_trampoline()
1833 	ri = utask->return_instances;  in handle_trampoline()
1852 			utask->depth--;  in handle_trampoline()
1856 	utask->return_instances = ri;  in handle_trampoline()
1945 static void handle_singlestep(struct uprobe_task *utask, struct pt_regs *regs)  in handle_singlestep()  argument
1950 	uprobe = utask->active_uprobe;  in handle_singlestep()
1951 	if (utask->state == UTASK_SSTEP_ACK)  in handle_singlestep()
1953 	else if (utask->state == UTASK_SSTEP_TRAPPED)  in handle_singlestep()
1959 	utask->active_uprobe = NULL;  in handle_singlestep()
1960 	utask->state = UTASK_RUNNING;  in handle_singlestep()
1986 	struct uprobe_task *utask;  in uprobe_notify_resume()  local
1990 	utask = current->utask;  in uprobe_notify_resume()
1991 	if (utask && utask->active_uprobe)  in uprobe_notify_resume()
1992 		handle_singlestep(utask, regs);  in uprobe_notify_resume()
2007 	    (!current->utask || !current->utask->return_instances))  in uprobe_pre_sstep_notifier()
2020 	struct uprobe_task *utask = current->utask;  in uprobe_post_sstep_notifier()  local
2022 	if (!current->mm || !utask || !utask->active_uprobe)  in uprobe_post_sstep_notifier()
2026 	utask->state = UTASK_SSTEP_ACK;  in uprobe_post_sstep_notifier()