1320 	if (!tsk->mm || !tsk->mm->uprobes_state.xol_area || !tsk->utask)  in xol_free_insn_slot()
1323 	slot_addr = tsk->utask->xol_vaddr;  in xol_free_insn_slot()
1344 		tsk->utask->xol_vaddr = 0;  in xol_free_insn_slot()
1376 	struct uprobe_task *utask = current->utask;  in uprobe_get_trap_addr()  local
1378 	if (unlikely(utask && utask->active_uprobe))  in uprobe_get_trap_addr()
1379 		return utask->vaddr;  in uprobe_get_trap_addr()
1398 	struct uprobe_task *utask = t->utask;  in uprobe_free_utask()  local
1401 	if (!utask)  in uprobe_free_utask()
1404 	if (utask->active_uprobe)  in uprobe_free_utask()
1405 		put_uprobe(utask->active_uprobe);  in uprobe_free_utask()
1407 	ri = utask->return_instances;  in uprobe_free_utask()
1412 	kfree(utask);  in uprobe_free_utask()
1413 	t->utask = NULL;  in uprobe_free_utask()
1426 	if (!current->utask)  in get_utask()
1427 		current->utask = kzalloc(sizeof(struct uprobe_task), GFP_KERNEL);  in get_utask()
1428 	return current->utask;  in get_utask()
1439 	t->utask = n_utask;  in dup_utask()
1470 	if (!__create_xol_area(current->utask->dup_xol_addr))  in dup_xol_work()
1479 	struct uprobe_task *utask = current->utask;  in uprobe_copy_process()  local
1483 	t->utask = NULL;  in uprobe_copy_process()
1485 	if (!utask || !utask->return_instances)  in uprobe_copy_process()
1491 	if (dup_utask(t, utask))  in uprobe_copy_process()
1502 	t->utask->dup_xol_addr = area->vaddr;  in uprobe_copy_process()
1503 	init_task_work(&t->utask->dup_xol_work, dup_xol_work);  in uprobe_copy_process()
1504 	task_work_add(t, &t->utask->dup_xol_work, true);  in uprobe_copy_process()
1526 static void cleanup_return_instances(struct uprobe_task *utask, bool chained,  in cleanup_return_instances()  argument
1529 	struct return_instance *ri = utask->return_instances;  in cleanup_return_instances()
1534 		utask->depth--;  in cleanup_return_instances()
1536 	utask->return_instances = ri;  in cleanup_return_instances()
1542 	struct uprobe_task *utask;  in prepare_uretprobe()  local
1549 	utask = get_utask();  in prepare_uretprobe()
1550 	if (!utask)  in prepare_uretprobe()
1553 	if (utask->depth >= MAX_URETPROBE_DEPTH) {  in prepare_uretprobe()
1571 	cleanup_return_instances(utask, chained, regs);  in prepare_uretprobe()
1579 		if (!utask->return_instances) {  in prepare_uretprobe()
1587 		orig_ret_vaddr = utask->return_instances->orig_ret_vaddr;  in prepare_uretprobe()
1596 	utask->depth++;  in prepare_uretprobe()
1597 	ri->next = utask->return_instances;  in prepare_uretprobe()
1598 	utask->return_instances = ri;  in prepare_uretprobe()
1609 	struct uprobe_task *utask;  in pre_ssout()  local
1613 	utask = get_utask();  in pre_ssout()
1614 	if (!utask)  in pre_ssout()
1621 	utask->xol_vaddr = xol_vaddr;  in pre_ssout()
1622 	utask->vaddr = bp_vaddr;  in pre_ssout()
1630 	utask->active_uprobe = uprobe;  in pre_ssout()
1631 	utask->state = UTASK_SSTEP;  in pre_ssout()
1647 	struct uprobe_task *utask = t->utask;  in uprobe_deny_signal()  local
1649 	if (likely(!utask || !utask->active_uprobe))  in uprobe_deny_signal()
1652 	WARN_ON_ONCE(utask->state != UTASK_SSTEP);  in uprobe_deny_signal()
1660 			utask->state = UTASK_SSTEP_TRAPPED;  in uprobe_deny_signal()
1802 	struct uprobe_task *utask;  in handle_trampoline()  local
1806 	utask = current->utask;  in handle_trampoline()
1807 	if (!utask)  in handle_trampoline()
1810 	ri = utask->return_instances;  in handle_trampoline()
1829 			utask->depth--;  in handle_trampoline()
1833 	utask->return_instances = ri;  in handle_trampoline()
1922 static void handle_singlestep(struct uprobe_task *utask, struct pt_regs *regs)  in handle_singlestep()  argument
1927 	uprobe = utask->active_uprobe;  in handle_singlestep()
1928 	if (utask->state == UTASK_SSTEP_ACK)  in handle_singlestep()
1930 	else if (utask->state == UTASK_SSTEP_TRAPPED)  in handle_singlestep()
1936 	utask->active_uprobe = NULL;  in handle_singlestep()
1937 	utask->state = UTASK_RUNNING;  in handle_singlestep()
1963 	struct uprobe_task *utask;  in uprobe_notify_resume()  local
1967 	utask = current->utask;  in uprobe_notify_resume()
1968 	if (utask && utask->active_uprobe)  in uprobe_notify_resume()
1969 		handle_singlestep(utask, regs);  in uprobe_notify_resume()
1984 	    (!current->utask || !current->utask->return_instances))  in uprobe_pre_sstep_notifier()
1997 	struct uprobe_task *utask = current->utask;  in uprobe_post_sstep_notifier()  local
1999 	if (!current->mm || !utask || !utask->active_uprobe)  in uprobe_post_sstep_notifier()
2003 	utask->state = UTASK_SSTEP_ACK;  in uprobe_post_sstep_notifier()