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List:       linux-kernel
Subject:    Re: [PATCH] mm/shmem: Zero out unused vma fields in shmem_pseudo_vma_init()
From:       Hugh Dickins <hughd () google ! com>
Date:       2018-05-31 23:37:10
Message-ID: alpine.LSU.2.11.1805311635410.13735 () eggly ! anvils
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On Thu, 31 May 2018, Andrew Morton wrote:
> On Thu, 31 May 2018 16:56:02 +0300 "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> wrote:
> 
> > shmem/tmpfs uses pseudo vma to allocate page with correct NUMA policy.
> > 
> > The pseudo vma doesn't have vm_page_prot set. We are going to encode
> > encryption KeyID in vm_page_prot. Having garbage there causes problems.
> > 
> > Zero out all unused fields in the pseudo vma.
> > 
> 
> So there are no known problems in the current mainline kernel?

Correct - if we limit ourselves to the area of the shmem pseudo-vma :)

Hugh
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