Re: kernel BUG at /src/linux-dev/mm/mempolicy.c:1738! on v3.16-rc1

[Christoph Lameter]

On Fri, 20 Jun 2014, Hugh Dickins wrote:

> [PATCH] mm: fix crashes from mbind() merging vmas
>
> v2.6.34's 9d8cebd4bcd7 ("mm: fix mbind vma merge problem") introduced
> vma merging to mbind(), but it should have also changed the convention
> of passing start vma from queue_pages_range() (formerly check_range())
> to new_vma_page(): vma merging may have already freed that structure,
> resulting in BUG at mm/mempolicy.c:1738 and probably worse crashes.

Good catch. Cannot find fault with what I see.

Acked-by: Christoph Lameter <cl@xxxxxxxxx>
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