Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755768AbYCYOco (ORCPT ); Tue, 25 Mar 2008 10:32:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754200AbYCYOcf (ORCPT ); Tue, 25 Mar 2008 10:32:35 -0400 Received: from one.firstfloor.org ([213.235.205.2]:52128 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754041AbYCYOce (ORCPT ); Tue, 25 Mar 2008 10:32:34 -0400 Date: Tue, 25 Mar 2008 15:35:44 +0100 From: Andi Kleen To: Krzysztof Halasa Cc: Andi Kleen , Andrew Morton , Oleg Nesterov , ebiederm@xmission.com, xemul@openvz.org, pavel@ucw.cz, sds@tycho.nsa.gov, roland@redhat.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH] ptrace: it is fun to strace /sbin/init Message-ID: <20080325143544.GP2170@one.firstfloor.org> References: <20080323135110.GA294@tv-sign.ru> <20080324152906.dee7b272.akpm@linux-foundation.org> <20080324225611.GA157@tv-sign.ru> <20080324160819.cea2d921.akpm@linux-foundation.org> <87r6dzi0mw.fsf@basil.nowhere.org> <20080325142259.GO2170@one.firstfloor.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 865 Lines: 24 On Tue, Mar 25, 2008 at 03:30:29PM +0100, Krzysztof Halasa wrote: > Andi Kleen writes: > > > The problem is that you can deadlock if you are not very careful. > > I can damage the system in trillion ways, one more is not a problem > :-) We don't actually have that many ways for hard deadlocks even as root (short of doing really nasty things on /dev/kmem) > Hopefully someone will write the details down to enable root to be > very careful. Sure, but if the deadlocks can be avoided on the kernel level (just making sure the children are already reaped) then it would be even better. -Andi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/