Re: mm: BUG in pgtable_pmd_page_dtor

[Vlastimil Babka]

On 11/25/2016 12:41 PM, Andrey Ryabinin wrote:
> 
> 
> On 11/25/2016 11:42 AM, Vlastimil Babka wrote:
> 
>>  	pr_emerg("page:%p count:%d mapcount:%d mapping:%p index:%#lx",
>>  		  page, page_ref_count(page), mapcount,
>> @@ -59,6 +61,21 @@ void __dump_page(struct page *page, const char *reason)
>>  
>>  	pr_emerg("flags: %#lx(%pGp)\n", page->flags, &page->flags);
>>  
>> +	pr_alert("raw struct page data:");
>> +	for (i = 0; i < sizeof(struct page) / sizeof(unsigned long); i++) {
>> +		unsigned long *word_ptr;
>> +
>> +		word_ptr = ((unsigned long *) page) + i;
>> +
>> +		if ((i % words_per_line) == 0) {
>> +			pr_cont("\n");
>> +			pr_alert(" %016lx", *word_ptr);
>> +		} else {
>> +			pr_cont(" %016lx", *word_ptr);
>> +		}
>> +	}
>> +	pr_cont("\n");
>> +
> 
> Single call to print_hex_dump() could replace this loop.

Ah, didn't know about that one, thanks!

This also addresses Kirill's comment:

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