Jeff Dike | c5d4bb1 | 2008-02-04 22:31:14 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * Licensed under the GPL |
| 4 | */ |
| 5 | |
Jeff Dike | c5d4bb1 | 2008-02-04 22:31:14 -0800 | [diff] [blame] | 6 | #include <linux/kallsyms.h> |
| 7 | #include <linux/kernel.h> |
| 8 | #include <linux/module.h> |
| 9 | #include <linux/sched.h> |
Al Viro | 382d95f | 2012-10-08 03:26:54 +0100 | [diff] [blame] | 10 | #include <asm/sysrq.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | |
Paolo 'Blaisorblade' Giarrusso | b346103 | 2005-05-28 15:52:00 -0700 | [diff] [blame] | 12 | /* Catch non-i386 SUBARCH's. */ |
| 13 | #if !defined(CONFIG_UML_X86) || defined(CONFIG_64BIT) |
| 14 | void show_trace(struct task_struct *task, unsigned long * stack) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | { |
Jeff Dike | c5d4bb1 | 2008-02-04 22:31:14 -0800 | [diff] [blame] | 16 | unsigned long addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | |
Jeff Dike | c5d4bb1 | 2008-02-04 22:31:14 -0800 | [diff] [blame] | 18 | if (!stack) { |
Paolo 'Blaisorblade' Giarrusso | b346103 | 2005-05-28 15:52:00 -0700 | [diff] [blame] | 19 | stack = (unsigned long*) &stack; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | WARN_ON(1); |
| 21 | } |
| 22 | |
Jeff Dike | c5d4bb1 | 2008-02-04 22:31:14 -0800 | [diff] [blame] | 23 | printk(KERN_INFO "Call Trace: \n"); |
| 24 | while (((long) stack & (THREAD_SIZE-1)) != 0) { |
| 25 | addr = *stack; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | if (__kernel_text_address(addr)) { |
Jeff Dike | c5d4bb1 | 2008-02-04 22:31:14 -0800 | [diff] [blame] | 27 | 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 Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | } |
Paolo 'Blaisorblade' Giarrusso | b346103 | 2005-05-28 15:52:00 -0700 | [diff] [blame] | 36 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | /*Stolen from arch/i386/kernel/traps.c */ |
Jeff Dike | 0d0d0ed | 2007-02-10 01:44:15 -0800 | [diff] [blame] | 39 | static const int kstack_depth_to_print = 24; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | |
| 41 | /* This recently started being used in arch-independent code too, as in |
Viresh Kumar | 0a0fca9 | 2013-06-04 13:10:24 +0530 | [diff] [blame] | 42 | * kernel/sched/core.c.*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | void show_stack(struct task_struct *task, unsigned long *esp) |
| 44 | { |
| 45 | unsigned long *stack; |
| 46 | int i; |
| 47 | |
| 48 | if (esp == NULL) { |
Paolo 'Blaisorblade' Giarrusso | b346103 | 2005-05-28 15:52:00 -0700 | [diff] [blame] | 49 | if (task != current && task != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | esp = (unsigned long *) KSTK_ESP(task); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | } else { |
| 52 | esp = (unsigned long *) &esp; |
| 53 | } |
| 54 | } |
| 55 | |
| 56 | stack = esp; |
Jeff Dike | c5d4bb1 | 2008-02-04 22:31:14 -0800 | [diff] [blame] | 57 | for (i = 0; i < kstack_depth_to_print; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | if (kstack_end(stack)) |
| 59 | break; |
| 60 | if (i && ((i % 8) == 0)) |
Joe Perches | ad361c9 | 2009-07-06 13:05:40 -0700 | [diff] [blame] | 61 | printk(KERN_INFO " "); |
| 62 | printk(KERN_CONT "%08lx ", *stack++); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | } |
| 64 | |
Allan Graves | fad1c45 | 2005-10-04 14:53:52 -0400 | [diff] [blame] | 65 | show_trace(task, esp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | } |