linux-kernel - Re: linux-next: add utrace tree

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Date:	Fri, 22 Jan 2010 08:43:18 -0500
From:	Valdis.Kletnieks@...edu
To:	ananth@...ibm.com
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Frank Ch. Eigler" <fche@...hat.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Peter Zijlstra <peterz@...radead.org>,
	Fr??d??ric Weisbecker <fweisbec@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	linux-next@...r.kernel.org, "H. Peter Anvin" <hpa@...or.com>,
	utrace-devel@...hat.com, Thomas Gleixner <tglx@...utronix.de>
Subject: Re: linux-next: add utrace tree

On Fri, 22 Jan 2010 10:51:39 +0530, Ananth N Mavinakayanahalli said:

> FWIW, Oleg's implementation of ptrace over utrace is 100% compatible
> with legacy ptrace; gdb testsuite indicates that
> (http://lkml.org/lkml/2009/12/21/98).

No, that only proves it's compatible enough for gdb to not care. The problem
is all those *other* packages that abuse ptrace in totally crackhead ways.

(No, I can't name them - but ptrace is the sort of interface that almost
encourages its use for things somewhere between crackhead and mad-scientist,
so they're almost certainly out there.. WAY out there.. :)

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