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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Daniel Vetter <daniel@ffwll.ch>
Cc: Tom Lendacky <thomas.lendacky@amd.com>,
	David Airlie <airlied@linux.ie>,
	Daniel Vetter <daniel.vetter@ffwll.ch>,
	Eyal Itkin <eyalit@checkpoint.com>,
	dri-devel@lists.freedesktop.org,
	Cihangir Akturk <cakturk@gmail.com>,
	Krzysztof Kozlowski <krzk@kernel.org>,
	Ingo Molnar <mingo@kernel.org>
Subject: Re: [PATCH] drm: udl: Properly check framebuffer mmap offsets
Date: Thu, 22 Mar 2018 09:03:00 +0100	[thread overview]
Message-ID: <20180322080300.GA28877@kroah.com> (raw)
In-Reply-To: <20180322065959.GF14155@phenom.ffwll.local>

On Thu, Mar 22, 2018 at 07:59:59AM +0100, Daniel Vetter wrote:
> Does anyone working on overflow-proof integers? That would make a lot of
> this code so much simpler if we could just ask the compiler to carry the
> oferflow bit around for a given expression and then check that and bail
> with -EINVAL.

That would be nice, but no, I don't think that's part of any C standard
work that I have heard of :(

greg k-h
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  reply	other threads:[~2018-03-22  8:03 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-21 15:45 [PATCH] drm: udl: Properly check framebuffer mmap offsets Greg Kroah-Hartman
2018-03-22  6:59 ` Daniel Vetter
2018-03-22  8:03   ` Greg Kroah-Hartman [this message]
2018-03-22  9:54     ` Daniel Vetter
2018-03-22  9:54       ` Daniel Vetter
2018-03-23  0:14       ` Kees Cook
2018-03-26  8:26         ` Daniel Vetter
2018-03-26  8:26           ` Daniel Vetter

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