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Re: [PATCH] mm: mm, mmap: do not blow on PROT_NONE MAP_FIXED holes in the stack

From Linus Torvalds <torvalds@linux-foundation.org>
Newsgroups linux.kernel
Subject Re: [PATCH] mm: mm, mmap: do not blow on PROT_NONE MAP_FIXED holes in the stack
Date 2017-07-05 19:50 +0200
Message-ID <tZWB4-Ve-19@gated-at.bofh.it> (permalink)
References <tZVOF-nA-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Wed, Jul 5, 2017 at 9:56 AM, Michal Hocko <mhocko@kernel.org> wrote:
>
> "mm: enlarge stack guard gap" has introduced a regression in some rust
> and Java environments which are trying to implement their own stack
> guard page.  They are punching a new MAP_FIXED mapping inside the
> existing stack Vma.

Hmm. What version is this patch against? It doesn't seem to match my 4.12 tree.

                 Linus

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[PATCH] mm: mm, mmap: do not blow on PROT_NONE MAP_FIXED holes in the stack Michal Hocko <mhocko@kernel.org> - 2017-07-05 19:00 +0200
  Re: [PATCH] mm: mm, mmap: do not blow on PROT_NONE MAP_FIXED holes in  the stack Linus Torvalds <torvalds@linux-foundation.org> - 2017-07-05 19:50 +0200
    Re: [PATCH] mm: mm, mmap: do not blow on PROT_NONE MAP_FIXED holes  in the stack Michal Hocko <mhocko@kernel.org> - 2017-07-05 20:30 +0200
      Re: [PATCH] mm: mm, mmap: do not blow on PROT_NONE MAP_FIXED holes in  the stack Linus Torvalds <torvalds@linux-foundation.org> - 2017-07-05 20:40 +0200
        Re: [PATCH] mm: mm, mmap: do not blow on PROT_NONE MAP_FIXED holes  in the stack Michal Hocko <mhocko@kernel.org> - 2017-07-05 21:00 +0200
          Re: [PATCH] mm: mm, mmap: do not blow on PROT_NONE MAP_FIXED holes in  the stack Linus Torvalds <torvalds@linux-foundation.org> - 2017-07-05 21:20 +0200
            Re: [PATCH] mm: mm, mmap: do not blow on PROT_NONE MAP_FIXED holes  in the stack Willy Tarreau <w@1wt.eu> - 2017-07-05 21:20 +0200
          Re: [PATCH] mm: mm, mmap: do not blow on PROT_NONE MAP_FIXED holes  in the stack Michal Hocko <mhocko@kernel.org> - 2017-07-05 21:20 +0200
      Re: [PATCH] mm: mm, mmap: do not blow on PROT_NONE MAP_FIXED holes  in the stack Andrew Morton <akpm@linux-foundation.org> - 2017-07-05 23:20 +0200
        Re: [PATCH] mm: mm, mmap: do not blow on PROT_NONE MAP_FIXED holes in  the stack Linus Torvalds <torvalds@linux-foundation.org> - 2017-07-05 23:50 +0200
        Re: [PATCH] mm: mm, mmap: do not blow on PROT_NONE MAP_FIXED holes  in the stack Michal Hocko <mhocko@kernel.org> - 2017-07-06 08:50 +0200

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