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SubjectRe: mm: kernel BUG at mm/rmap.c:530
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.
>

Okay, so the dump_vma() helper shows:

[ 736.842506] vma ffff8808436fdc00 start (null) end (null)
[ 736.842506] next (null) prev (null) mm (null)
[ 736.842506] prot 0 anon_vma (null) vm_ops (null)
[ 736.842506] pgoff 0 file (null) private_data (null)
[ 736.846670] flags: 0x0(


Thanks,
Sasha


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