blob: 0dc4d1c6f98a19b5ed018c58d7aeb683d468ae1c [file] [log] [blame]
Jeff Dikec5d4bb12008-02-04 22:31:14 -08001/*
2 * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003 * Licensed under the GPL
4 */
5
Jeff Dikec5d4bb12008-02-04 22:31:14 -08006#include <linux/kallsyms.h>
7#include <linux/kernel.h>
8#include <linux/module.h>
9#include <linux/sched.h>
Al Viro382d95f2012-10-08 03:26:54 +010010#include <asm/sysrq.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070011
Paolo 'Blaisorblade' Giarrussob3461032005-05-28 15:52:00 -070012/* Catch non-i386 SUBARCH's. */
13#if !defined(CONFIG_UML_X86) || defined(CONFIG_64BIT)
14void show_trace(struct task_struct *task, unsigned long * stack)
Linus Torvalds1da177e2005-04-16 15:20:36 -070015{
Jeff Dikec5d4bb12008-02-04 22:31:14 -080016 unsigned long addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -070017
Jeff Dikec5d4bb12008-02-04 22:31:14 -080018 if (!stack) {
Paolo 'Blaisorblade' Giarrussob3461032005-05-28 15:52:00 -070019 stack = (unsigned long*) &stack;
Linus Torvalds1da177e2005-04-16 15:20:36 -070020 WARN_ON(1);
21 }
22
Jeff Dikec5d4bb12008-02-04 22:31:14 -080023 printk(KERN_INFO "Call Trace: \n");
24 while (((long) stack & (THREAD_SIZE-1)) != 0) {
25 addr = *stack;
Linus Torvalds1da177e2005-04-16 15:20:36 -070026 if (__kernel_text_address(addr)) {
Jeff Dikec5d4bb12008-02-04 22:31:14 -080027 printk(KERN_INFO "%08lx: [<%08lx>]",
28 (unsigned long) stack, addr);
29 print_symbol(KERN_CONT " %s", addr);
30 printk(KERN_CONT "\n");
31 }
32 stack++;
33 }
34 printk(KERN_INFO "\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -070035}
Paolo 'Blaisorblade' Giarrussob3461032005-05-28 15:52:00 -070036#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070037
Linus Torvalds1da177e2005-04-16 15:20:36 -070038/*Stolen from arch/i386/kernel/traps.c */
Jeff Dike0d0d0ed2007-02-10 01:44:15 -080039static const int kstack_depth_to_print = 24;
Linus Torvalds1da177e2005-04-16 15:20:36 -070040
41/* This recently started being used in arch-independent code too, as in
Viresh Kumar0a0fca92013-06-04 13:10:24 +053042 * kernel/sched/core.c.*/
Linus Torvalds1da177e2005-04-16 15:20:36 -070043void show_stack(struct task_struct *task, unsigned long *esp)
44{
45 unsigned long *stack;
46 int i;
47
48 if (esp == NULL) {
Paolo 'Blaisorblade' Giarrussob3461032005-05-28 15:52:00 -070049 if (task != current && task != NULL) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070050 esp = (unsigned long *) KSTK_ESP(task);
Linus Torvalds1da177e2005-04-16 15:20:36 -070051 } else {
52 esp = (unsigned long *) &esp;
53 }
54 }
55
56 stack = esp;
Jeff Dikec5d4bb12008-02-04 22:31:14 -080057 for (i = 0; i < kstack_depth_to_print; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070058 if (kstack_end(stack))
59 break;
60 if (i && ((i % 8) == 0))
Joe Perchesad361c92009-07-06 13:05:40 -070061 printk(KERN_INFO " ");
62 printk(KERN_CONT "%08lx ", *stack++);
Linus Torvalds1da177e2005-04-16 15:20:36 -070063 }
64
Allan Gravesfad1c452005-10-04 14:53:52 -040065 show_trace(task, esp);
Linus Torvalds1da177e2005-04-16 15:20:36 -070066}