From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 12986 invoked by alias); 21 Jul 2016 15:10:42 -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 12972 invoked by uid 89); 21 Jul 2016 15:10:41 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.6 required=5.0 tests=AWL,BAYES_00,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW,SPF_PASS autolearn=ham version=3.3.2 spammy=Hx-languages-length:1652, fuller, What's X-HELO: mail-io0-f181.google.com Received: from mail-io0-f181.google.com (HELO mail-io0-f181.google.com) (209.85.223.181) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES128-GCM-SHA256 encrypted) ESMTPS; Thu, 21 Jul 2016 15:10:31 +0000 Received: by mail-io0-f181.google.com with SMTP id q83so78882241iod.1 for ; Thu, 21 Jul 2016 08:10:31 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=qiteo6UYsTdwZPdlx42ItXarH9l6YfL+rhjnB6yEkOk=; b=AJZHz2T41Vs+wq5uFvs5kenwztktnXsGPPV5UM7Wcvlcy3Qbnbf64lKTcMLmBI4HKU +59umSN6PvT7Wo0FJVzHc0+GZltAtNNGPbpSaNdI74yki4fLQBnXMLxVy3JILqAxNX7k +hwjnBNoPeH+OZ8dTPuty2RRZVT/ShkqKuQcKkevXQuQUMycw1CC5Sx9JudzBKLvCnVI 6a06qMaWr0pBokSu0CVAVjSA4QKXiuj/BWUlrS/KeGNCtz8MhOsiMbrvSY1498igGfcl hCA/E3EKlFfVF/M+a9tJXsbRRmjlfUaveQLn+Ddow2iIhYPKnOBeu233JrMIlCETqbqb q0qQ== X-Gm-Message-State: ALyK8tL0QeiVZGDEvW7kJuUptedeb5ZN68xffDjBnoo2PGOtj+0g+gEQ6hBRfe+9E7k87j24C8cljM+nsNhkiA== X-Received: by 10.107.136.154 with SMTP id s26mr5000320ioi.115.1469113829345; Thu, 21 Jul 2016 08:10:29 -0700 (PDT) MIME-Version: 1.0 Received: by 10.107.129.24 with HTTP; Thu, 21 Jul 2016 08:10:28 -0700 (PDT) In-Reply-To: <74ec06df-cc13-4d42-d333-38a5039112e7@redhat.com> References: <74ec06df-cc13-4d42-d333-38a5039112e7@redhat.com> From: buddhika chamith Date: Thu, 21 Jul 2016 15:10:00 -0000 Message-ID: Subject: Re: Systemtap user space probing issue - Unknown symbol in module To: David Smith Cc: "Frank Ch. Eigler" , systemtap@sourceware.org Content-Type: text/plain; charset=UTF-8 X-SW-Source: 2016-q3/txt/msg00082.txt.bz2 Thanks. There is an older installation of systemtap in the system as well. But I made sure that I was using the later version when running these commands. I will uninstall the older version and see just in case. And I will follow up with the perf output if that doesn't work out as well. On Tue, Jul 19, 2016 at 2:32 PM, David Smith wrote: > 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)