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Subject: Re: mm: BUG in pgtable_pmd_page_dtor
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From: Vlastimil Babka <vbabka@suse.cz>
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Date: Fri, 25 Nov 2016 15:08:10 +0100
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Sender: owner-linux-mm@kvack.org
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To: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>, Dmitry Vyukov <dvyukov@google.com>, Andrew Morton <akpm@linux-foundation.org>, "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>, Michal Hocko <mhocko@suse.com>, Ingo Molnar <mingo@kernel.org>, Joonsoo Kim <iamjoonsoo.kim@lge.com>, "linux-mm@kvack.org" <linux-mm@kvack.org>, LKML <linux-kernel@vger.kernel.org>, syzkaller <syzkaller@googlegroups.com>

On 11/25/2016 02:07 PM, Kirill A. Shutemov wrote:
>> --- a/mm/debug.c
>> +++ b/mm/debug.c
>> @@ -59,6 +59,10 @@ void __dump_page(struct page *page, const char *reason)
>>  
>>  	pr_emerg("flags: %#lx(%pGp)\n", page->flags, &page->flags);
>>  
>> +	print_hex_dump(KERN_ALERT, "raw: ", DUMP_PREFIX_NONE,
>> +			32, (sizeof(unsigned long) == 8) ? 8 : 4,
> 
> That's a very fancy way to write sizeof(unsigned long) ;)
 
Ah, damnit, thanks.

----8<----