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Date: Wed, 27 Aug 2014 08:14:07 -0400
From: Sasha Levin <sasha.levin@oracle.com>
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To: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
CC: Andrew Morton <akpm@linux-foundation.org>,
        Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
        Joonsoo Kim <iamjoonsoo.kim@lge.com>, Hugh Dickins <hughd@google.com>,
        Johannes Weiner <hannes@cmpxchg.org>, Dave Jones <davej@redhat.com>,
        "linux-mm@kvack.org" <linux-mm@kvack.org>,
        LKML <linux-kernel@vger.kernel.org>
Subject: Re: mm: kernel BUG at mm/rmap.c:530
References: <53F487EB.7070703@oracle.com> <20140820140247.C729CE00A3@blue.fi.intel.com>
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On 08/20/2014 10:02 AM, Kirill A. Shutemov wrote:
> Sasha Levin wrote:
>> > Hi all,
>> > 
>> > While fuzzing with trinity inside a KVM tools guest running the latest -next
>> > kernel, I've stumbled on the following spew:
>> > 
>> > [ 2581.180086] kernel BUG at mm/rmap.c:530!
> Page is mapped where it shouldn't be. Or vma/struct page/pgtable is corrupted.
> Basically, I have no idea what happend :-P
> 
> We really should dump page and vma info there. It's strange we don't have
> dump_vma() helper yet.
> 

It just happened again, I'll work on that dump_vma helper... :/


Thanks,
Sasha