From: Rik van Riel <riel@redhat.com>
To: Kees Cook <keescook@chromium.org>,
Thomas Hellstrom <thellstrom@vmware.com>
Cc: Laura Abbott <labbott@redhat.com>,
VMware Graphics <linux-graphics-maintainer@vmware.com>,
Sinclair Yeh <syeh@vmware.com>, Vinson Lee <vlee@freedesktop.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Vladimir Davydov <vdavydov.dev@gmail.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Andy Lutomirski <luto@kernel.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] usercopy: remove page-spanning test for now
Date: Wed, 07 Sep 2016 14:29:46 -0400 [thread overview]
Message-ID: <1473272986.10218.57.camel@redhat.com> (raw)
In-Reply-To: <20160907180845.GA31134@www.outflux.net>
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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>
--
All rights reversed
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next prev parent reply other threads:[~2016-09-07 18:29 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-07 18:08 [PATCH v2] usercopy: remove page-spanning test for now Kees Cook
2016-09-07 18:29 ` Rik van Riel [this message]
2016-09-07 18:31 ` Linus Torvalds
2016-09-07 18:33 ` Kees Cook
2016-09-07 18:54 ` Sinclair Yeh
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