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Date: Wed, 7 Mar 2018 16:36:17 -0800
From: Kees Cook <>
To: Andrew Morton <>
Cc: Tycho Andersen <>, "Tobin C. Harding" <>, Jonathan Corbet <>, 
	Pantelis Antoniou <>, 
	"Steven Rostedt (VMware)" <>, 
	Kernel Hardening <>, LKML <>, 
	"Gustavo A. R. Silva" <>
Subject: Re: [PATCH] vsprintf: Remove accidental VLA usage

On Wed, Mar 7, 2018 at 4:03 PM, Andrew Morton <> wrote:
> On Wed, 7 Mar 2018 15:59:27 -0800 Kees Cook <> wrote:
>> I didn't want to encourage a global macro that _lacked_ the safety
>> built into the max*() family, though... thoughts for a reasonable
>> approach?
> I think SIMPLE_MAX() is OK.    Along with one of /* these */ things ;)

Sounds good. I will resend with net/ipv[46]/proc.c and one other fixed
as well...


Kees Cook
Pixel Security

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