projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| c5d4bb17 JD |
1 | /* |
| 2 | * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) | |
| 9d1ee8ce RW |
3 | * Copyright (C) 2013 Richard Weinberger <richrd@nod.at> |
| 4 | * | |
| 5 | * This program is free software; you can redistribute it and/or modify | |
| 6 | * it under the terms of the GNU General Public License version 2 as | |
| 7 | * published by the Free Software Foundation. | |
| 1da177e4 LT |
8 | */ |
| 9 | ||
| c5d4bb17 JD |
10 | #include <linux/kallsyms.h> |
| 11 | #include <linux/kernel.h> | |
| 12 | #include <linux/module.h> | |
| 13 | #include <linux/sched.h> | |
| b17b0153 | 14 | #include <linux/sched/debug.h> |
| 3f8c2452 | 15 | #include <linux/sched/task_stack.h> |
| b17b0153 | 16 | |
| 382d95fd | 17 | #include <asm/sysrq.h> |
| 970e51fe | 18 | #include <asm/stacktrace.h> |
| f72c22e4 | 19 | #include <os.h> |
| 1da177e4 | 20 | |
| 970e51fe | 21 | static void _print_addr(void *data, unsigned long address, int reliable) |
| 1da177e4 | 22 | { |
| 970e51fe DW |
23 | pr_info(" [<%08lx>]", address); |
| 24 | pr_cont(" %s", reliable ? "" : "? "); | |
| 25 | print_symbol("%s", address); | |
| 26 | pr_cont("\n"); | |
| 1da177e4 LT |
27 | } |
| 28 | ||
| 970e51fe DW |
29 | static const struct stacktrace_ops stackops = { |
| 30 | .address = _print_addr | |
| 31 | }; | |
| f72c22e4 | 32 | |
| 9d1ee8ce | 33 | void show_stack(struct task_struct *task, unsigned long *stack) |
| 1da177e4 | 34 | { |
| fcf81931 | 35 | unsigned long *sp = stack; |
| f72c22e4 | 36 | struct pt_regs *segv_regs = current->thread.segv_regs; |
| 1da177e4 LT |
37 | int i; |
| 38 | ||
| f72c22e4 | 39 | if (!segv_regs && os_is_signal_stack()) { |
| 970e51fe | 40 | pr_err("Received SIGSEGV in SIGSEGV handler," |
| f72c22e4 RW |
41 | " aborting stack trace!\n"); |
| 42 | return; | |
| 43 | } | |
| 44 | ||
| f72c22e4 RW |
45 | if (!stack) |
| 46 | sp = get_stack_pointer(task, segv_regs); | |
| 1da177e4 | 47 | |
| 970e51fe | 48 | pr_info("Stack:\n"); |
| 9d1ee8ce | 49 | stack = sp; |
| e96d1c36 | 50 | for (i = 0; i < 3 * STACKSLOTS_PER_LINE; i++) { |
| 1da177e4 LT |
51 | if (kstack_end(stack)) |
| 52 | break; | |
| 9d1ee8ce | 53 | if (i && ((i % STACKSLOTS_PER_LINE) == 0)) |
| 970e51fe DW |
54 | pr_cont("\n"); |
| 55 | pr_cont(" %08lx", *stack++); | |
| 1da177e4 | 56 | } |
| 970e51fe | 57 | pr_cont("\n"); |
| 1da177e4 | 58 | |
| 970e51fe DW |
59 | pr_info("Call Trace:\n"); |
| 60 | dump_trace(current, &stackops, NULL); | |
| 61 | pr_info("\n"); | |
| 1da177e4 | 62 | } |