disable pwm7

hc

2024-05-10 23fa18eaa71266feff7ba8d83022d9e1cc83c65a

 kernel/arch/x86/kernel/dumpstack_32.c
..
..
@@ -29,19 +29,22 @@
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29
 	if (type == STACK_TYPE_ENTRY)
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 		return "ENTRY_TRAMPOLINE";
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31
 
32
+	if (type == STACK_TYPE_EXCEPTION)
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+		return "#DF";
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+
32
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 	return NULL;
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36
 }
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37
 
35
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 static bool in_hardirq_stack(unsigned long *stack, struct stack_info *info)
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 {
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-	unsigned long *begin = (unsigned long *)this_cpu_read(hardirq_stack);
40
+	unsigned long *begin = (unsigned long *)this_cpu_read(hardirq_stack_ptr);
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41
 	unsigned long *end   = begin + (THREAD_SIZE / sizeof(long));
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42
 
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 	/*
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 	 * This is a software stack, so 'end' can be a valid stack pointer.
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 	 * It just means the stack is empty.
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 	 */
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-	if (stack <= begin || stack > end)
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+	if (stack < begin || stack > end)
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 		return false;
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49
 
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 	info->type	= STACK_TYPE_IRQ;
..
..
@@ -59,14 +62,14 @@
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62
 
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 static bool in_softirq_stack(unsigned long *stack, struct stack_info *info)
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 {
62
-	unsigned long *begin = (unsigned long *)this_cpu_read(softirq_stack);
65
+	unsigned long *begin = (unsigned long *)this_cpu_read(softirq_stack_ptr);
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66
 	unsigned long *end   = begin + (THREAD_SIZE / sizeof(long));
64
67
 
65
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 	/*
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 	 * This is a software stack, so 'end' can be a valid stack pointer.
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 	 * It just means the stack is empty.
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 	 */
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-	if (stack <= begin || stack > end)
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+	if (stack < begin || stack > end)
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 		return false;
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74
 
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 	info->type	= STACK_TYPE_SOFTIRQ;
..
..
@@ -81,6 +84,26 @@
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84
 
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 	return true;
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86
 }
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+
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+static bool in_doublefault_stack(unsigned long *stack, struct stack_info *info)
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+{
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+	struct cpu_entry_area *cea = get_cpu_entry_area(raw_smp_processor_id());
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+	struct doublefault_stack *ss = &cea->doublefault_stack;
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+
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+	void *begin = ss->stack;
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+	void *end = begin + sizeof(ss->stack);
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+
96
+	if ((void *)stack < begin || (void *)stack >= end)
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+		return false;
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+
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+	info->type	= STACK_TYPE_EXCEPTION;
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+	info->begin	= begin;
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+	info->end	= end;
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+	info->next_sp	= (unsigned long *)this_cpu_read(cpu_tss_rw.x86_tss.sp);
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+
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+	return true;
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+}
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+
84
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 int get_stack_info(unsigned long *stack, struct task_struct *task,
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 		   struct stack_info *info, unsigned long *visit_mask)
..
..
@@ -105,6 +128,9 @@
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 	if (in_softirq_stack(stack, info))
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 		goto recursion_check;
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130
 
131
+	if (in_doublefault_stack(stack, info))
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+		goto recursion_check;
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+
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 	goto unknown;
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135
 
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 recursion_check: