Re: [PATCH 10/10] mm: Prevent munmap and remap_file_pages of shadow stack

From: Yu-cheng Yu
Date: Thu Jun 07 2018 - 16:18:20 EST

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On Thu, 2018-06-07 at 11:50 -0700, Andy Lutomirski wrote:
> On Thu, Jun 7, 2018 at 7:41 AM Yu-cheng Yu <yu-cheng.yu@xxxxxxxxx> wrote:
>
> blocking remap_file_pages() seems reasonable. I'm not sure what's
> wrong with munmap().

Yes, maybe we don't need to block munmap(). If the shadow stack is
unmapped, the application gets a fault. I will remove the patch.

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