From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 8014 invoked by alias); 20 Sep 2006 15:14:25 -0000 Received: (qmail 8006 invoked by uid 22791); 20 Sep 2006 15:14:24 -0000 X-Spam-Status: No, hits=-1.3 required=5.0 tests=AWL,BAYES_00,SPF_HELO_PASS,SPF_PASS,UNPARSEABLE_RELAY X-Spam-Check-By: sourceware.org Received: from mx1.redhat.com (HELO mx1.redhat.com) (66.187.233.31) by sourceware.org (qpsmtpd/0.31) with ESMTP; Wed, 20 Sep 2006 15:14:17 +0000 Received: from int-mx1.corp.redhat.com (int-mx1.corp.redhat.com [172.16.52.254]) by mx1.redhat.com (8.12.11.20060308/8.12.11) with ESMTP id k8KFEFcK001053 for ; Wed, 20 Sep 2006 11:14:15 -0400 Received: from pobox.toronto.redhat.com (pobox.toronto.redhat.com [172.16.14.4]) by int-mx1.corp.redhat.com (8.12.11.20060308/8.12.11) with ESMTP id k8KFEFLM023546; Wed, 20 Sep 2006 11:14:15 -0400 Received: from touchme.toronto.redhat.com (IDENT:postfix@touchme.toronto.redhat.com [172.16.14.9]) by pobox.toronto.redhat.com (8.12.8/8.12.8) with ESMTP id k8KFEEY7002314; Wed, 20 Sep 2006 11:14:14 -0400 Received: from ton.toronto.redhat.com (ton.toronto.redhat.com [172.16.14.15]) by touchme.toronto.redhat.com (Postfix) with ESMTP id C6480800002; Wed, 20 Sep 2006 11:14:14 -0400 (EDT) Received: from ton.toronto.redhat.com (localhost.localdomain [127.0.0.1]) by ton.toronto.redhat.com (8.13.1/8.13.1) with ESMTP id k8KFEEcw016400; Wed, 20 Sep 2006 11:14:14 -0400 Received: (from fche@localhost) by ton.toronto.redhat.com (8.13.1/8.13.1/Submit) id k8KFEEuG016397; Wed, 20 Sep 2006 11:14:14 -0400 X-Authentication-Warning: ton.toronto.redhat.com: fche set sender to fche@redhat.com using -f To: Martin Hunt Cc: systemtap@sources.redhat.com Subject: Re: whitelist for safe-mode probes (or just a better blacklist?) References: <1158683336.10983.27.camel@dragon> From: fche@redhat.com (Frank Ch. Eigler) Date: Wed, 20 Sep 2006 15:14:00 -0000 In-Reply-To: <1158683336.10983.27.camel@dragon> Message-ID: User-Agent: Gnus/5.0808 (Gnus v5.8.8) Emacs/21.3 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org X-SW-Source: 2006-q3/txt/msg00633.txt.bz2 Martin Hunt writes: > [...] To guarantee a probe will not crash the kernel it is going to > be necessary to generate a whitelist of probe points. Sure, except that this guarantee is only as good as the method used to generate the whitelist. > [...] How would this all work? The whitelist and blacklist would be > files distributed with Systemtap. They would be updated > automatically with a test script. [...] How do you imagine this test script working? Could it generate a list roughly matching the "in-our-experience-so-far-safe" set in a reasonable timeframe? (It would not be very helpful if it took months to run, or resulted in a small list.) - FChE