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| 2 | |
| 3 | * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
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| 4 | * Copyright (C) 2013 Richard Weinberger <[email protected]>
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| 5 |
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| 6 |
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| 7 | #include <linux/kallsyms.h>
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| 8 | #include <linux/kernel.h>
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| 9 | #include <linux/module.h>
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| 10 | #include <linux/sched.h>
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| 11 | #include <linux/sched/debug.h>
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| 12 | #include <linux/sched/task_stack.h>
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| 13 |
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| 14 | #include <asm/stacktrace.h>
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| 15 | #include <os.h>
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| 16 |
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| 17 | static void _print_addr(void *data, unsigned long address, int reliable)
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| 18 | {
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| 19 | const char *loglvl = data;
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| 20 |
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| 21 | printk("%s [<%08lx>] %s%pS\n", loglvl, address, reliable ? "" : "? ",
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| 22 | (void *)address);
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| 23 | }
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| 24 |
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| 25 | static const struct stacktrace_ops stackops = {
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| 26 | .address = _print_addr
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| 27 | };
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| 28 |
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| 29 | void show_stack(struct task_struct *task, unsigned long *stack,
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| 30 | const char *loglvl)
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| 31 | {
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| 32 | struct pt_regs *segv_regs = current->thread.segv_regs;
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| 33 | int i;
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| 34 |
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| 35 | if (!stack)
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| 36 | stack = get_stack_pointer(task, segv_regs);
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| 37 |
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| 38 | printk("%sStack:\n", loglvl);
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| 39 | for (i = 0; i < 3 * STACKSLOTS_PER_LINE; i++) {
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| 40 | if (kstack_end(stack))
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| 41 | break;
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| 42 | if (i && ((i % STACKSLOTS_PER_LINE) == 0))
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| 43 | pr_cont("\n");
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| 44 | pr_cont(" %08lx", READ_ONCE_NOCHECK(*stack));
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| 45 | stack++;
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| 46 | }
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| 47 |
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| 48 | printk("%sCall Trace:\n", loglvl);
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| 49 | dump_trace(task ?: current, &stackops, (void *)loglvl);
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| 50 | }
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