1384 static struct return_instance *free_ret_instance(struct return_instance *ri)  in free_ret_instance()  argument
1386 	struct return_instance *next = ri->next;  in free_ret_instance()
1387 	put_uprobe(ri->uprobe);  in free_ret_instance()
1388 	kfree(ri);  in free_ret_instance()
1399 	struct return_instance *ri;  in uprobe_free_utask()  local
1407 	ri = utask->return_instances;  in uprobe_free_utask()
1408 	while (ri)  in uprobe_free_utask()
1409 		ri = free_ret_instance(ri);  in uprobe_free_utask()
1529 	struct return_instance *ri = utask->return_instances;  in cleanup_return_instances()  local
1532 	while (ri && !arch_uretprobe_is_alive(ri, ctx, regs)) {  in cleanup_return_instances()
1533 		ri = free_ret_instance(ri);  in cleanup_return_instances()
1536 	utask->return_instances = ri;  in cleanup_return_instances()
1541 	struct return_instance *ri;  in prepare_uretprobe()  local
1560 	ri = kmalloc(sizeof(struct return_instance), GFP_KERNEL);  in prepare_uretprobe()
1561 	if (!ri)  in prepare_uretprobe()
1590 	ri->uprobe = get_uprobe(uprobe);  in prepare_uretprobe()
1591 	ri->func = instruction_pointer(regs);  in prepare_uretprobe()
1592 	ri->stack = user_stack_pointer(regs);  in prepare_uretprobe()
1593 	ri->orig_ret_vaddr = orig_ret_vaddr;  in prepare_uretprobe()
1594 	ri->chained = chained;  in prepare_uretprobe()
1597 	ri->next = utask->return_instances;  in prepare_uretprobe()
1598 	utask->return_instances = ri;  in prepare_uretprobe()
1602 	kfree(ri);  in prepare_uretprobe()
1775 handle_uretprobe_chain(struct return_instance *ri, struct pt_regs *regs)  in handle_uretprobe_chain()  argument
1777 	struct uprobe *uprobe = ri->uprobe;  in handle_uretprobe_chain()
1783 			uc->ret_handler(uc, ri->func, regs);  in handle_uretprobe_chain()
1788 static struct return_instance *find_next_ret_chain(struct return_instance *ri)  in find_next_ret_chain()  argument
1793 		chained = ri->chained;  in find_next_ret_chain()
1794 		ri = ri->next;	/* can't be NULL if chained */  in find_next_ret_chain()
1797 	return ri;  in find_next_ret_chain()
1803 	struct return_instance *ri, *next;  in handle_trampoline()  local
1810 	ri = utask->return_instances;  in handle_trampoline()
1811 	if (!ri)  in handle_trampoline()
1821 		next = find_next_ret_chain(ri);  in handle_trampoline()
1824 		instruction_pointer_set(regs, ri->orig_ret_vaddr);  in handle_trampoline()
1827 				handle_uretprobe_chain(ri, regs);  in handle_trampoline()
1828 			ri = free_ret_instance(ri);  in handle_trampoline()
1830 		} while (ri != next);  in handle_trampoline()
1833 	utask->return_instances = ri;  in handle_trampoline()