Ejemplo n.º 1
0
void
show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs,
		   unsigned long *sp, unsigned long bp, char *log_lvl)
{
	unsigned long *stack;
	int i;

	if (sp == NULL) {
		if (task)
			sp = (unsigned long *)task->thread.sp;
		else
			sp = (unsigned long *)&sp;
	}

	stack = sp;
	for (i = 0; i < kstack_depth_to_print; i++) {
		if (kstack_end(stack))
			break;
		if ((i % STACKSLOTS_PER_LINE) == 0) {
			if (i != 0)
				pr_cont("\n");
			printk("%s %08lx", log_lvl, *stack++);
		} else
			pr_cont(" %08lx", *stack++);
		touch_nmi_watchdog();
	}
	pr_cont("\n");
	show_trace_log_lvl(task, regs, sp, bp, log_lvl);
}
Ejemplo n.º 2
0
void show_stack(struct task_struct *task, unsigned long *sp)
{
	unsigned long  *stack;
	int  i;

	/*
	 * debugging aid: "show_stack(NULL);" prints the
	 * back trace for this cpu.
	 */

	if(sp==NULL) {
		if (task)
			sp = (unsigned long *)task->thread.sp;
		else
			sp=(unsigned long*)&sp;
	}

	stack = sp;
	for(i=0; i < kstack_depth_to_print; i++) {
		if (kstack_end(stack))
			break;
		if (i && ((i % 4) == 0))
			printk("\n       ");
		printk("%08lx ", *stack++);
	}
	printk("\n");
	show_trace(task, sp);
}
Ejemplo n.º 3
0
/* displays a short stack trace */
void show_stack(struct task_struct *task, unsigned long *esp)
{
	unsigned long addr, *stack;
	int i;

	if (esp == NULL)
		esp = (unsigned long *)&esp;

	stack = esp;

	printk("Stack dump [0x%08lx]:\n", (unsigned long)esp);
	for (i = 0; i < kstack_depth_to_print; i++) {
		if (kstack_end(stack))
			break;
		if (__get_user(addr, stack)) {
			/* This message matches "failing address" marked
			   s390 in ksymoops, so lines containing it will
			   not be filtered out by ksymoops.  */
			printk("Failing address 0x%lx\n", (unsigned long)stack);
			break;
		}
		stack++;

		printk("sp + %02d: 0x%08lx\n", i * 4, addr);
	}
	printk("\n");

	show_trace(task, esp);

	return;
}
Ejemplo n.º 4
0
void show_stack(struct task_struct *task, unsigned long *sp)
{
	unsigned long *stack;
	int i;

	if (sp == NULL) {
		if (task)
			sp = (unsigned long *) ((struct thread_info *)
						(task->stack))->cpu_context.r1;
		else
			sp = (unsigned long *)&sp;
	}

	stack = sp;

	printk(KERN_INFO "\nStack:\n  ");

	for (i = 0; i < kstack_depth_to_print; i++) {
		if (kstack_end(sp))
			break;
		if (i && ((i % 8) == 0))
			printk("\n  ");
		printk("%08lx ", *sp++);
	}
	printk("\n");
	show_trace(task, stack);
}
Ejemplo n.º 5
0
void show_trace(struct task_struct *task, unsigned long *stack)
{
	unsigned long addr;

	if (!stack)
		stack = (unsigned long *)&stack;

	printk(KERN_NOTICE "Call Trace: ");
#ifdef CONFIG_KALLSYMS
	printk(KERN_NOTICE "\n");
#endif
	while (!kstack_end(stack)) {
		addr = *stack++;
		/*
		 * If the address is either in the text segment of the
		 * kernel, or in the region which contains vmalloc'ed
		 * memory, it *may* be the address of a calling
		 * routine; if so, print it so that someone tracing
		 * down the cause of the crash will be able to figure
		 * out the call path that was taken.
		 */
		if (kernel_text_address(addr))
			print_ip_sym(addr);
	}
	printk(KERN_NOTICE "\n");

	if (!task)
		task = current;

	debug_show_held_locks(task);
}
Ejemplo n.º 6
0
static void notrace walk_stackframe(struct task_struct *task,
	struct pt_regs *regs, bool (*fn)(unsigned long, void *), void *arg)
{
	unsigned long sp, pc;
	unsigned long *ksp;

	if (regs) {
		sp = user_stack_pointer(regs);
		pc = instruction_pointer(regs);
	} else if (task == NULL || task == current) {
		const register unsigned long current_sp __asm__ ("sp");
		sp = current_sp;
		pc = (unsigned long)walk_stackframe;
	} else {
		/* task blocked in __switch_to */
		sp = task->thread.sp;
		pc = task->thread.ra;
	}

	if (unlikely(sp & 0x7))
		return;

	ksp = (unsigned long *)sp;
	while (!kstack_end(ksp)) {
		if (__kernel_text_address(pc) && unlikely(fn(pc, arg)))
			break;
		pc = (*ksp++) - 0x4;
	}
}
Ejemplo n.º 7
0
static void show_trace(struct task_struct *tsk, unsigned long *sp)
{
	unsigned long addr;


	printk("\nCall Trace:");
#ifdef CONFIG_KALLSYMS
	printk("\n");
#endif

	while (!kstack_end(sp)) {
		addr = *sp++;
		/*
		 * If the address is either in the text segment of the
		 * kernel, or in the region which contains vmalloc'ed
		 * memory, it *may* be the address of a calling
		 * routine; if so, print it so that someone tracing
		 * down the cause of the crash will be able to figure
		 * out the call path that was taken.
		 */
		if (kernel_text_address(addr))
			print_ip_sym(addr);
	}

	printk("\n");
}
Ejemplo n.º 8
0
/* This recently started being used in arch-independent code too, as in
 * kernel/sched.c.*/
void show_stack(struct task_struct *task, unsigned long *esp)
{
	unsigned long *stack;
	int i;

	if (esp == NULL) {
		if (task != current && task != NULL) {
			esp = (unsigned long *) KSTK_ESP(task);
		} else {
			esp = (unsigned long *) &esp;
		}
	}

	stack = esp;
	for(i = 0; i < kstack_depth_to_print; i++) {
		if (kstack_end(stack))
			break;
		if (i && ((i % 8) == 0))
			printk("\n       ");
		printk("%08lx ", *stack++);
	}

	printk("Call Trace: \n");
	show_trace(task, esp);
}
Ejemplo n.º 9
0
void
show_stack_log_lvl(struct task_struct *task, struct pt_regs *regs,
		   unsigned long *sp, unsigned long bp, char *log_lvl)
{
	unsigned long *irq_stack_end;
	unsigned long *irq_stack;
	unsigned long *stack;
	int cpu;
	int i;

	preempt_disable();
	cpu = smp_processor_id();

	irq_stack_end	= (unsigned long *)(per_cpu(irq_stack_ptr, cpu));
	irq_stack	= (unsigned long *)(per_cpu(irq_stack_ptr, cpu) - IRQ_STACK_SIZE);

	/*
	 * Debugging aid: "show_stack(NULL, NULL);" prints the
	 * back trace for this cpu:
	 */
	if (sp == NULL) {
		if (task)
			sp = (unsigned long *)task->thread.sp;
		else
			sp = (unsigned long *)&sp;
	}

	stack = sp;
	for (i = 0; i < kstack_depth_to_print; i++) {
		if (stack >= irq_stack && stack <= irq_stack_end) {
			if (stack == irq_stack_end) {
				stack = (unsigned long *) (irq_stack_end[-1]);
				pr_cont(" <EOI> ");
			}
		} else {
		if (kstack_end(stack))
			break;
		}
		if ((i % STACKSLOTS_PER_LINE) == 0) {
			if (i != 0)
				pr_cont("\n");
			printk("%s %016lx", log_lvl, *stack++);
		} else
			pr_cont(" %016lx", *stack++);
		touch_nmi_watchdog();
	}
	preempt_enable();

	pr_cont("\n");
	show_trace_log_lvl(task, regs, sp, bp, log_lvl);
}
Ejemplo n.º 10
0
static void __dump(struct task_struct *tsk, unsigned long *base_reg)
{
	unsigned long ret_addr;
	int cnt = LOOP_TIMES, graph = 0;
	pr_emerg("Call Trace:\n");
	if (!IS_ENABLED(CONFIG_FRAME_POINTER)) {
		while (!kstack_end(base_reg)) {
			ret_addr = *base_reg++;
			if (__kernel_text_address(ret_addr)) {
				get_real_ret_addr(&ret_addr, tsk, &graph);
				print_ip_sym(ret_addr);
			}
			if (--cnt < 0)
				break;
		}
	} else {
		while (!kstack_end((void *)base_reg) &&
		       !((unsigned long)base_reg & 0x3) &&
		       ((unsigned long)base_reg >= TASK_SIZE)) {
			unsigned long next_fp;
#if !defined(NDS32_ABI_2)
			ret_addr = base_reg[0];
			next_fp = base_reg[1];
#else
			ret_addr = base_reg[-1];
			next_fp = base_reg[FP_OFFSET];
#endif
			if (__kernel_text_address(ret_addr)) {
				get_real_ret_addr(&ret_addr, tsk, &graph);
				print_ip_sym(ret_addr);
			}
			if (--cnt < 0)
				break;
			base_reg = (unsigned long *)next_fp;
		}
	}
	pr_emerg("\n");
}
Ejemplo n.º 11
0
static void show_trace(struct task_struct *task, unsigned long *stack)
{
	unsigned long addr;

	if (!stack)
		stack = (unsigned long*)&stack;

	printk("Call Trace: ");
	while (!kstack_end(stack)) {
		addr = *stack++;
		if (__kernel_text_address(addr))
			printk("[<%08lx>] %pSR\n", addr, (void *)addr);
	}
	printk("\n");
}
Ejemplo n.º 12
0
void show_trace(struct task_struct *task, unsigned long *stack)
{
	unsigned long addr;

	if (!stack)
		stack = (unsigned long*)&stack;

	printk("Call Trace: ");
	while (!kstack_end(stack)) {
		addr = *stack++;
		if (__kernel_text_address(addr)) {
			printk("[<%08lx>] ", addr);
			print_symbol("%s\n", addr);
		}
	}
	printk("\n");
}
Ejemplo n.º 13
0
/*
 * Save stack-backtrace addresses into a stack_trace buffer:
 */
static void save_raw_context_stack(struct stack_trace *trace,
	unsigned long reg29)
{
	unsigned long *sp = (unsigned long *)reg29;
	unsigned long addr;

	while (!kstack_end(sp)) {
		addr = *sp++;
		if (__kernel_text_address(addr)) {
			if (trace->skip > 0)
				trace->skip--;
			else
				trace->entries[trace->nr_entries++] = addr;
			if (trace->nr_entries >= trace->max_entries)
				break;
		}
	}
}
Ejemplo n.º 14
0
void
stack_reader_dump(struct task_struct *task, struct pt_regs *regs,
		  unsigned long *sp, const struct stacktrace_ops *ops,
		  void *data)
{
	struct thread_info *context;
	int graph = 0;

	context = (struct thread_info *)
		((unsigned long)sp & (~(THREAD_SIZE - 1)));

	while (!kstack_end(sp)) {
		unsigned long addr = *sp++;

		if (__kernel_text_address(addr)) {
			ops->address(data, addr, 1);

			print_ftrace_graph_addr(addr, data, ops,
						context, &graph);
		}
	}
}