1642 	if (!tsk->mm || !tsk->mm->uprobes_state.xol_area || !tsk->utask)  in xol_free_insn_slot()
1645 	slot_addr = tsk->utask->xol_vaddr;  in xol_free_insn_slot()
1666 		tsk->utask->xol_vaddr = 0;  in xol_free_insn_slot()
1698 	struct uprobe_task *utask = current->utask;  in uprobe_get_trap_addr()  local
1700 	if (unlikely(utask && utask->active_uprobe))  in uprobe_get_trap_addr()
1701 		return utask->vaddr;  in uprobe_get_trap_addr()
1720 	struct uprobe_task *utask = t->utask;  in uprobe_free_utask()  local
1723 	if (!utask)  in uprobe_free_utask()
1726 	if (utask->active_uprobe)  in uprobe_free_utask()
1727 		put_uprobe(utask->active_uprobe);  in uprobe_free_utask()
1729 	ri = utask->return_instances;  in uprobe_free_utask()
1734 	kfree(utask);  in uprobe_free_utask()
1735 	t->utask = NULL;  in uprobe_free_utask()
1748 	if (!current->utask)  in get_utask()
1749 		current->utask = kzalloc(sizeof(struct uprobe_task), GFP_KERNEL);  in get_utask()
1750 	return current->utask;  in get_utask()
1761 	t->utask = n_utask;  in dup_utask()
1792 	if (!__create_xol_area(current->utask->dup_xol_addr) &&  in dup_xol_work()
1802 	struct uprobe_task *utask = current->utask;  in uprobe_copy_process()  local
1806 	t->utask = NULL;  in uprobe_copy_process()
1808 	if (!utask || !utask->return_instances)  in uprobe_copy_process()
1814 	if (dup_utask(t, utask))  in uprobe_copy_process()
1825 	t->utask->dup_xol_addr = area->vaddr;  in uprobe_copy_process()
1826 	init_task_work(&t->utask->dup_xol_work, dup_xol_work);  in uprobe_copy_process()
1827 	task_work_add(t, &t->utask->dup_xol_work, true);  in uprobe_copy_process()
1849 static void cleanup_return_instances(struct uprobe_task *utask, bool chained,  in cleanup_return_instances()  argument
1852 	struct return_instance *ri = utask->return_instances;  in cleanup_return_instances()
1857 		utask->depth--;  in cleanup_return_instances()
1859 	utask->return_instances = ri;  in cleanup_return_instances()
1865 	struct uprobe_task *utask;  in prepare_uretprobe()  local
1872 	utask = get_utask();  in prepare_uretprobe()
1873 	if (!utask)  in prepare_uretprobe()
1876 	if (utask->depth >= MAX_URETPROBE_DEPTH) {  in prepare_uretprobe()
1894 	cleanup_return_instances(utask, chained, regs);  in prepare_uretprobe()
1902 		if (!utask->return_instances) {  in prepare_uretprobe()
1910 		orig_ret_vaddr = utask->return_instances->orig_ret_vaddr;  in prepare_uretprobe()
1919 	utask->depth++;  in prepare_uretprobe()
1920 	ri->next = utask->return_instances;  in prepare_uretprobe()
1921 	utask->return_instances = ri;  in prepare_uretprobe()
1932 	struct uprobe_task *utask;  in pre_ssout()  local
1936 	utask = get_utask();  in pre_ssout()
1937 	if (!utask)  in pre_ssout()
1944 	utask->xol_vaddr = xol_vaddr;  in pre_ssout()
1945 	utask->vaddr = bp_vaddr;  in pre_ssout()
1953 	utask->active_uprobe = uprobe;  in pre_ssout()
1954 	utask->state = UTASK_SSTEP;  in pre_ssout()
1970 	struct uprobe_task *utask = t->utask;  in uprobe_deny_signal()  local
1972 	if (likely(!utask || !utask->active_uprobe))  in uprobe_deny_signal()
1975 	WARN_ON_ONCE(utask->state != UTASK_SSTEP);  in uprobe_deny_signal()
1983 			utask->state = UTASK_SSTEP_TRAPPED;  in uprobe_deny_signal()
2131 	struct uprobe_task *utask;  in handle_trampoline()  local
2135 	utask = current->utask;  in handle_trampoline()
2136 	if (!utask)  in handle_trampoline()
2139 	ri = utask->return_instances;  in handle_trampoline()
2158 			utask->depth--;  in handle_trampoline()
2162 	utask->return_instances = ri;  in handle_trampoline()
2259 static void handle_singlestep(struct uprobe_task *utask, struct pt_regs *regs)  in handle_singlestep()  argument
2264 	uprobe = utask->active_uprobe;  in handle_singlestep()
2265 	if (utask->state == UTASK_SSTEP_ACK)  in handle_singlestep()
2267 	else if (utask->state == UTASK_SSTEP_TRAPPED)  in handle_singlestep()
2273 	utask->active_uprobe = NULL;  in handle_singlestep()
2274 	utask->state = UTASK_RUNNING;  in handle_singlestep()
2300 	struct uprobe_task *utask;  in uprobe_notify_resume()  local
2304 	utask = current->utask;  in uprobe_notify_resume()
2305 	if (utask && utask->active_uprobe)  in uprobe_notify_resume()
2306 		handle_singlestep(utask, regs);  in uprobe_notify_resume()
2321 	    (!current->utask || !current->utask->return_instances))  in uprobe_pre_sstep_notifier()
2334 	struct uprobe_task *utask = current->utask;  in uprobe_post_sstep_notifier()  local
2336 	if (!current->mm || !utask || !utask->active_uprobe)  in uprobe_post_sstep_notifier()
2340 	utask->state = UTASK_SSTEP_ACK;  in uprobe_post_sstep_notifier()