Date: Sun, 24 Mar 2002 12:04:29 -0500 (EST) From: Robert Watson <rwatson@FreeBSD.ORG> To: Poul-Henning Kamp <phk@critter.freebsd.dk> Cc: "M. Warner Losh" <imp@village.org>, current@FreeBSD.ORG, obrien@FreeBSD.ORG Subject: Re: turning off malloc's AJ by default Message-ID: <Pine.NEB.3.96L.1020324120226.47668f-100000@fledge.watson.org> In-Reply-To: <62336.1016988467@critter.freebsd.dk>
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On Sun, 24 Mar 2002, Poul-Henning Kamp wrote: > In message <Pine.NEB.3.96L.1020324112220.47668e-100000@fledge.watson.org>, Robe > rt Watson writes: > > >With new userland code coming into -CURRENT at a rapid rate, it may be > >useful in -CURRENT for developers. For DPs, probably not. > > I don't have to tell you what the 'D' in 'DP' means, right ? :-) > > Robert, I can only say that I disagree 100% with you. > > In principle because I think only -RELEASE should not have J, and I > think even -RELEASE should have A. > > In practice I think this is completely l00ney, considering what we have > done in the kernel, worrying about AJ related false hits is sooo totally > down in the noise. A few weeks ago, I would have believed you. Except that using -J was a workaround recommended in a recent security advisory--prior to recommending it, I ran it on a server of mine for a few days. You'd be surprised how many random applications keel over, and the performance impact it has for some specific types of applications. Robert N M Watson FreeBSD Core Team, TrustedBSD Project robert@fledge.watson.org NAI Labs, Safeport Network Services To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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