Re: mm: kernel BUG at mm/memory.c:1230

[Hillf Danton]

Hi Hugh

On Sun, May 27, 2012 at 4:26 AM, Hugh Dickins <hughd@xxxxxxxxxx> wrote:
>
> Whereas in exiting, rwsem is not locked, but we're going linearly upwards,
> and whenever we walk into a pmd_trans_huge area, both addr and next should
> be hpage aligned: the vma bounds are unsuited to THP if they're unaligned.
>
Take a look at the dependence of huge page size on PAE,

             [PATCH] KVM: MMU: fix huge page adapted on non-PAE host
             https://lkml.org/lkml/2012/5/28/39

and hope that is helpful.
-hd
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