From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 119667 invoked by alias); 19 Jul 2016 18:32:41 -0000 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 Received: (qmail 119656 invoked by uid 89); 19 Jul 2016 18:32:40 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-3.2 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD,SPF_HELO_PASS autolearn=ham version=3.3.2 spammy=2.3, H*f:ep8SWrWDnQ, H*i:ep8SWrWDnQ, H*f:CAPO7Hz8Q5whCZE X-HELO: mx1.redhat.com Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES256-GCM-SHA384 encrypted) ESMTPS; Tue, 19 Jul 2016 18:32:30 +0000 Received: from int-mx14.intmail.prod.int.phx2.redhat.com (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 6889B3B709; Tue, 19 Jul 2016 18:32:29 +0000 (UTC) Received: from t540p.usersys.redhat.com ([10.15.1.190]) by int-mx14.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u6JIWSPm025775 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 19 Jul 2016 14:32:28 -0400 Subject: Re: Systemtap user space probing issue - Unknown symbol in module To: buddhika chamith , "Frank Ch. Eigler" References: Cc: systemtap@sourceware.org From: David Smith Message-ID: <74ec06df-cc13-4d42-d333-38a5039112e7@redhat.com> Date: Tue, 19 Jul 2016 18:32:00 -0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.1.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-IsSubscribed: yes X-SW-Source: 2016-q3/txt/msg00065.txt.bz2 On 07/19/2016 10:47 AM, buddhika chamith wrote: > Please find it attached. I don't have sudo access to this particular > machine at the moment. But let me know if this is not enough > information without running as root. > > On Tue, Jul 19, 2016 at 11:30 AM, Frank Ch. Eigler wrote: >> >> chamibuddhika wrote: >> >>> [...] >>> [7681057.827483] stap_610f349f374e883560aeeb9de1523c1f__13285: Unknown >>> symbol __tracepoint_sched_process_exit (err 0) >>> [...] >> >> This is reminiscent of >> https://www.sourceware.org/ml/systemtap/2016-q2/msg00082.html but >> those incompatibilities were worked out in a stap version << 3.0. >> Could you submit a fuller 'stap-report' output? What's odd is that according to your 'stap-report' output, your kernel has CONFIG_TRACEPOINTS=y, but systemtap can't register the tracepoints it needs. Can you try 'perf list tracepoint' as root and see what you get? One more thing. You said earlier you were running systemtap 3.0. It appears that you have systemtap 2.3 installed. Did you build systemtap 3.0 yourself? -- David Smith dsmith@redhat.com Red Hat http://www.redhat.com 256.217.0141 (direct) 256.837.0057 (fax)