1641 	if (!tsk->mm || !tsk->mm->uprobes_state.xol_area || !tsk->utask)  in xol_free_insn_slot()
1644 	slot_addr = tsk->utask->xol_vaddr;  in xol_free_insn_slot()
1665 		tsk->utask->xol_vaddr = 0;  in xol_free_insn_slot()
1697 	struct uprobe_task *utask = current->utask;  in uprobe_get_trap_addr()  local
1699 	if (unlikely(utask && utask->active_uprobe))  in uprobe_get_trap_addr()
1700 		return utask->vaddr;  in uprobe_get_trap_addr()
1719 	struct uprobe_task *utask = t->utask;  in uprobe_free_utask()  local
1722 	if (!utask)  in uprobe_free_utask()
1725 	if (utask->active_uprobe)  in uprobe_free_utask()
1726 		put_uprobe(utask->active_uprobe);  in uprobe_free_utask()
1728 	ri = utask->return_instances;  in uprobe_free_utask()
1733 	kfree(utask);  in uprobe_free_utask()
1734 	t->utask = NULL;  in uprobe_free_utask()
1747 	if (!current->utask)  in get_utask()
1748 		current->utask = kzalloc(sizeof(struct uprobe_task), GFP_KERNEL);  in get_utask()
1749 	return current->utask;  in get_utask()
1760 	t->utask = n_utask;  in dup_utask()
1791 	if (!__create_xol_area(current->utask->dup_xol_addr) &&  in dup_xol_work()
1801 	struct uprobe_task *utask = current->utask;  in uprobe_copy_process()  local
1805 	t->utask = NULL;  in uprobe_copy_process()
1807 	if (!utask || !utask->return_instances)  in uprobe_copy_process()
1813 	if (dup_utask(t, utask))  in uprobe_copy_process()
1824 	t->utask->dup_xol_addr = area->vaddr;  in uprobe_copy_process()
1825 	init_task_work(&t->utask->dup_xol_work, dup_xol_work);  in uprobe_copy_process()
1826 	task_work_add(t, &t->utask->dup_xol_work, TWA_RESUME);  in uprobe_copy_process()
1848 static void cleanup_return_instances(struct uprobe_task *utask, bool chained,  in cleanup_return_instances()  argument
1851 	struct return_instance *ri = utask->return_instances;  in cleanup_return_instances()
1856 		utask->depth--;  in cleanup_return_instances()
1858 	utask->return_instances = ri;  in cleanup_return_instances()
1864 	struct uprobe_task *utask;  in prepare_uretprobe()  local
1871 	utask = get_utask();  in prepare_uretprobe()
1872 	if (!utask)  in prepare_uretprobe()
1875 	if (utask->depth >= MAX_URETPROBE_DEPTH) {  in prepare_uretprobe()
1893 	cleanup_return_instances(utask, chained, regs);  in prepare_uretprobe()
1901 		if (!utask->return_instances) {  in prepare_uretprobe()
1909 		orig_ret_vaddr = utask->return_instances->orig_ret_vaddr;  in prepare_uretprobe()
1918 	utask->depth++;  in prepare_uretprobe()
1919 	ri->next = utask->return_instances;  in prepare_uretprobe()
1920 	utask->return_instances = ri;  in prepare_uretprobe()
1931 	struct uprobe_task *utask;  in pre_ssout()  local
1935 	utask = get_utask();  in pre_ssout()
1936 	if (!utask)  in pre_ssout()
1943 	utask->xol_vaddr = xol_vaddr;  in pre_ssout()
1944 	utask->vaddr = bp_vaddr;  in pre_ssout()
1952 	utask->active_uprobe = uprobe;  in pre_ssout()
1953 	utask->state = UTASK_SSTEP;  in pre_ssout()
1969 	struct uprobe_task *utask = t->utask;  in uprobe_deny_signal()  local
1971 	if (likely(!utask || !utask->active_uprobe))  in uprobe_deny_signal()
1974 	WARN_ON_ONCE(utask->state != UTASK_SSTEP);  in uprobe_deny_signal()
1982 			utask->state = UTASK_SSTEP_TRAPPED;  in uprobe_deny_signal()
2133 	struct uprobe_task *utask;  in handle_trampoline()  local
2137 	utask = current->utask;  in handle_trampoline()
2138 	if (!utask)  in handle_trampoline()
2141 	ri = utask->return_instances;  in handle_trampoline()
2160 			utask->depth--;  in handle_trampoline()
2164 	utask->return_instances = ri;  in handle_trampoline()
2261 static void handle_singlestep(struct uprobe_task *utask, struct pt_regs *regs)  in handle_singlestep()  argument
2266 	uprobe = utask->active_uprobe;  in handle_singlestep()
2267 	if (utask->state == UTASK_SSTEP_ACK)  in handle_singlestep()
2269 	else if (utask->state == UTASK_SSTEP_TRAPPED)  in handle_singlestep()
2275 	utask->active_uprobe = NULL;  in handle_singlestep()
2276 	utask->state = UTASK_RUNNING;  in handle_singlestep()
2302 	struct uprobe_task *utask;  in uprobe_notify_resume()  local
2306 	utask = current->utask;  in uprobe_notify_resume()
2307 	if (utask && utask->active_uprobe)  in uprobe_notify_resume()
2308 		handle_singlestep(utask, regs);  in uprobe_notify_resume()
2323 	    (!current->utask || !current->utask->return_instances))  in uprobe_pre_sstep_notifier()
2336 	struct uprobe_task *utask = current->utask;  in uprobe_post_sstep_notifier()  local
2338 	if (!current->mm || !utask || !utask->active_uprobe)  in uprobe_post_sstep_notifier()
2342 	utask->state = UTASK_SSTEP_ACK;  in uprobe_post_sstep_notifier()