Openwall GNU/*/Linux - a small security-enhanced Linux distro for servers
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Tue, 24 Apr 2018 14:58:45 -0500
From: "Serge E. Hallyn" <serge@...lyn.com>
To: Tycho Andersen <tycho@...ho.ws>
Cc: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>, ebiggers3@...il.com,
	dhowells@...hat.com, keyrings@...r.kernel.org,
	linux-security-module@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel-hardening@...ts.openwall.com, jmorris@...ei.org,
	serge@...lyn.com, Jason@...c4.com
Subject: Re: [PATCH 1/3] big key: get rid of stack array allocation

Quoting Tycho Andersen (tycho@...ho.ws):
> On Tue, Apr 24, 2018 at 11:46:38PM +0900, Tetsuo Handa wrote:
> > Tycho Andersen wrote:
> > > > > +	if (unlikely(crypto_aead_ivsize(big_key_aead) != GCM_AES_IV_SIZE)) {
> > > > > +		WARN(1, "big key algorithm changed?");
> > 
> > Please avoid using WARN() WARN_ON() etc.
> > syzbot would catch it and panic() due to panic_on_warn == 1.
> 
> But it is really a programming bug in this case (and it seems better
> than BUG()...). Isn't this exactly the sort of case we want to catch?
> 
> Tycho

Right - is there a url to some discussion about this?  Because not
using WARN when WARN should be used, because it troubles a bot, seems
the wrong solution.  If this *is* what's been agreed upon, then
what is the new recommended thing to do here?

-serge

Powered by blists - more mailing lists

Your e-mail address:

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.