1636 	if (!tsk->mm || !tsk->mm->uprobes_state.xol_area || !tsk->utask)  in xol_free_insn_slot()
1639 	slot_addr = tsk->utask->xol_vaddr;  in xol_free_insn_slot()
1660 		tsk->utask->xol_vaddr = 0;  in xol_free_insn_slot()
1692 	struct uprobe_task *utask = current->utask;  in uprobe_get_trap_addr()  local
1694 	if (unlikely(utask && utask->active_uprobe))  in uprobe_get_trap_addr()
1695 		return utask->vaddr;  in uprobe_get_trap_addr()
1714 	struct uprobe_task *utask = t->utask;  in uprobe_free_utask()  local
1717 	if (!utask)  in uprobe_free_utask()
1720 	if (utask->active_uprobe)  in uprobe_free_utask()
1721 		put_uprobe(utask->active_uprobe);  in uprobe_free_utask()
1723 	ri = utask->return_instances;  in uprobe_free_utask()
1728 	kfree(utask);  in uprobe_free_utask()
1729 	t->utask = NULL;  in uprobe_free_utask()
1742 	if (!current->utask)  in get_utask()
1743 		current->utask = kzalloc(sizeof(struct uprobe_task), GFP_KERNEL);  in get_utask()
1744 	return current->utask;  in get_utask()
1755 	t->utask = n_utask;  in dup_utask()
1786 	if (!__create_xol_area(current->utask->dup_xol_addr) &&  in dup_xol_work()
1796 	struct uprobe_task *utask = current->utask;  in uprobe_copy_process()  local
1800 	t->utask = NULL;  in uprobe_copy_process()
1802 	if (!utask || !utask->return_instances)  in uprobe_copy_process()
1808 	if (dup_utask(t, utask))  in uprobe_copy_process()
1819 	t->utask->dup_xol_addr = area->vaddr;  in uprobe_copy_process()
1820 	init_task_work(&t->utask->dup_xol_work, dup_xol_work);  in uprobe_copy_process()
1821 	task_work_add(t, &t->utask->dup_xol_work, TWA_RESUME);  in uprobe_copy_process()
1843 static void cleanup_return_instances(struct uprobe_task *utask, bool chained,  in cleanup_return_instances()  argument
1846 	struct return_instance *ri = utask->return_instances;  in cleanup_return_instances()
1851 		utask->depth--;  in cleanup_return_instances()
1853 	utask->return_instances = ri;  in cleanup_return_instances()
1859 	struct uprobe_task *utask;  in prepare_uretprobe()  local
1866 	utask = get_utask();  in prepare_uretprobe()
1867 	if (!utask)  in prepare_uretprobe()
1870 	if (utask->depth >= MAX_URETPROBE_DEPTH) {  in prepare_uretprobe()
1888 	cleanup_return_instances(utask, chained, regs);  in prepare_uretprobe()
1896 		if (!utask->return_instances) {  in prepare_uretprobe()
1904 		orig_ret_vaddr = utask->return_instances->orig_ret_vaddr;  in prepare_uretprobe()
1913 	utask->depth++;  in prepare_uretprobe()
1914 	ri->next = utask->return_instances;  in prepare_uretprobe()
1915 	utask->return_instances = ri;  in prepare_uretprobe()
1926 	struct uprobe_task *utask;  in pre_ssout()  local
1930 	utask = get_utask();  in pre_ssout()
1931 	if (!utask)  in pre_ssout()
1938 	utask->xol_vaddr = xol_vaddr;  in pre_ssout()
1939 	utask->vaddr = bp_vaddr;  in pre_ssout()
1947 	utask->active_uprobe = uprobe;  in pre_ssout()
1948 	utask->state = UTASK_SSTEP;  in pre_ssout()
1964 	struct uprobe_task *utask = t->utask;  in uprobe_deny_signal()  local
1966 	if (likely(!utask || !utask->active_uprobe))  in uprobe_deny_signal()
1969 	WARN_ON_ONCE(utask->state != UTASK_SSTEP);  in uprobe_deny_signal()
1977 			utask->state = UTASK_SSTEP_TRAPPED;  in uprobe_deny_signal()
2128 	struct uprobe_task *utask;  in handle_trampoline()  local
2132 	utask = current->utask;  in handle_trampoline()
2133 	if (!utask)  in handle_trampoline()
2136 	ri = utask->return_instances;  in handle_trampoline()
2155 			utask->depth--;  in handle_trampoline()
2159 	utask->return_instances = ri;  in handle_trampoline()
2256 static void handle_singlestep(struct uprobe_task *utask, struct pt_regs *regs)  in handle_singlestep()  argument
2261 	uprobe = utask->active_uprobe;  in handle_singlestep()
2262 	if (utask->state == UTASK_SSTEP_ACK)  in handle_singlestep()
2264 	else if (utask->state == UTASK_SSTEP_TRAPPED)  in handle_singlestep()
2270 	utask->active_uprobe = NULL;  in handle_singlestep()
2271 	utask->state = UTASK_RUNNING;  in handle_singlestep()
2297 	struct uprobe_task *utask;  in uprobe_notify_resume()  local
2301 	utask = current->utask;  in uprobe_notify_resume()
2302 	if (utask && utask->active_uprobe)  in uprobe_notify_resume()
2303 		handle_singlestep(utask, regs);  in uprobe_notify_resume()
2318 	    (!current->utask || !current->utask->return_instances))  in uprobe_pre_sstep_notifier()
2331 	struct uprobe_task *utask = current->utask;  in uprobe_post_sstep_notifier()  local
2333 	if (!current->mm || !utask || !utask->active_uprobe)  in uprobe_post_sstep_notifier()
2337 	utask->state = UTASK_SSTEP_ACK;  in uprobe_post_sstep_notifier()