From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 12180 invoked by alias); 14 Jun 2010 14:49:19 -0000 Received: (qmail 12164 invoked by uid 22791); 14 Jun 2010 14:49:17 -0000 X-SWARE-Spam-Status: No, hits=-5.3 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_HI,SPF_HELO_PASS,T_RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Mon, 14 Jun 2010 14:49:12 +0000 Received: from int-mx05.intmail.prod.int.phx2.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.18]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id o5EEnApO006362 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Mon, 14 Jun 2010 10:49:11 -0400 Received: from fche.csb (vpn-11-206.rdu.redhat.com [10.11.11.206]) by int-mx05.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id o5EEn90D006424; Mon, 14 Jun 2010 10:49:09 -0400 Received: by fche.csb (Postfix, from userid 2569) id C52F55812D; Mon, 14 Jun 2010 10:49:08 -0400 (EDT) To: Roland McGrath Cc: Mark Wielaard , systemtap@sources.redhat.com Subject: Re: [Bug uprobes/11672] utrace_report_syscall_exit crash References: <20100607130056.11672.mjw@redhat.com> <20100609143920.1986.qmail@sourceware.org> <20100614084019.7F188408C2@magilla.sf.frob.com> From: fche@redhat.com (Frank Ch. Eigler) Date: Mon, 14 Jun 2010 19:53:00 -0000 In-Reply-To: <20100614084019.7F188408C2@magilla.sf.frob.com> (Roland McGrath's message of "Mon, 14 Jun 2010 01:40:19 -0700 (PDT)") Message-ID: User-Agent: Gnus/5.1008 (Gnus v5.10.8) Emacs/21.4 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org X-SW-Source: 2010-q2/txt/msg00551.txt.bz2 Roland McGrath writes: > [...] The only clearly safe alternative I see there is some giant > synchronization like stop_machine_run, off hand. [...] Actually, why not. One stop_machine_run per systemtap module shutdown may well be tolerable. - FChE