Re: [PATCH v2] usercopy: remove page-spanning test for now

From	Rik van Riel <riel@redhat.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH v2] usercopy: remove page-spanning test for now
Date	2016-09-07 20:40 +0200
Message-ID	<sePVo-3mn-31@gated-at.bofh.it> (permalink)
References	<sePsm-37b-21@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Wed, 2016-09-07 at 11:08 -0700, Kees Cook wrote:
> A custom allocator without __GFP_COMP that copies to userspace has
> been
> found in vmw_execbuf_process[1], so this disables the page-span
> checker
> by placing it behind a CONFIG for future work where such things can
> be
> tracked down later.
> 
> [1] https://bugzilla.redhat.com/show_bug.cgi?id=1373326
> 
> Reported-by: Vinson Lee <vlee@freedesktop.org>
> Fixes: f5509cc18daa ("mm: Hardened usercopy")
> Signed-off-by: Kees Cook <keescook@chromium.org>

Reviewed-by: Rik van Riel <riel@redhat.com>

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[PATCH v2] usercopy: remove page-spanning test for now Kees Cook <keescook@chromium.org> - 2016-09-07 20:10 +0200
  Re: [PATCH v2] usercopy: remove page-spanning test for now Kees Cook <keescook@chromium.org> - 2016-09-07 20:40 +0200
  Re: [PATCH v2] usercopy: remove page-spanning test for now Linus Torvalds <torvalds@linux-foundation.org> - 2016-09-07 20:40 +0200
  Re: [PATCH v2] usercopy: remove page-spanning test for now Rik van Riel <riel@redhat.com> - 2016-09-07 20:40 +0200

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