// SPDX-License-Identifier: GPL-2.0-only/* * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) * Copyright (C) 2013 Richard Weinberger <richrd@nod.at> */ #include <linux/kallsyms.h>#include <linux/kernel.h>#include <linux/module.h>#include <linux/sched.h>#include <linux/sched/debug.h>#include <linux/sched/task_stack.h> #include <asm/stacktrace.h>#include <os.h> static void _print_addr(void *data, unsigned long address, int reliable){	const char *loglvl = data; 	printk("%s [<%08lx>] %s%pS\n", loglvl, address, reliable ? "" : "? ",		(void *)address);} static const struct stacktrace_ops stackops = {	.address = _print_addr}; void show_stack(struct task_struct *task, unsigned long *stack,		       const char *loglvl){	struct pt_regs *segv_regs = current->thread.segv_regs;	int i; 	if (!stack)		stack = get_stack_pointer(task, segv_regs); 	printk("%sStack:\n", loglvl);	for (i = 0; i < 3 * STACKSLOTS_PER_LINE; i++) {		if (kstack_end(stack))			break;		if (i && ((i % STACKSLOTS_PER_LINE) == 0))			pr_cont("\n");		pr_cont(" %08lx", READ_ONCE_NOCHECK(*stack));		stack++;	} 	printk("%sCall Trace:\n", loglvl);	dump_trace(task ?: current, &stackops, (void *)loglvl);}