From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 22027 invoked by alias); 6 Nov 2013 15:25:05 -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 21990 invoked by uid 89); 6 Nov 2013 15:25:04 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-3.5 required=5.0 tests=AWL,BAYES_00,RDNS_NONE,SPF_HELO_PASS,SPF_PASS,URIBL_BLOCKED autolearn=no version=3.3.2 X-HELO: mx1.redhat.com Received: from Unknown (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Wed, 06 Nov 2013 15:24:24 +0000 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id rA6FOFe6012269 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Wed, 6 Nov 2013 10:24:16 -0500 Received: from [10.13.129.31] (dhcp129-31.rdu.redhat.com [10.13.129.31]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id rA6FOFXR016818; Wed, 6 Nov 2013 10:24:15 -0500 Message-ID: <527A5F1F.6060000@redhat.com> Date: Wed, 06 Nov 2013 15:25:00 -0000 From: William Cohen User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.1.0 MIME-Version: 1.0 To: David Long CC: Naresh Kamboju , "systemtap@sourceware.org" Subject: Re: Segmenation fault for systemtap tests using the arm uprobes support References: <5229DF78.4060301@redhat.com> <5229E091.1090802@linaro.org> <52681E03.8080509@redhat.com> <52701F7A.8070102@linaro.org> <527956C8.9050401@redhat.com> <527986F9.7030204@linaro.org> In-Reply-To: <527986F9.7030204@linaro.org> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-IsSubscribed: yes X-SW-Source: 2013-q4/txt/msg00162.txt.bz2 On 11/05/2013 07:02 PM, David Long wrote: > On 11/05/13 15:36, William Cohen wrote: >> On 10/29/2013 04:50 PM, David Long wrote: >>> OK, I've seen your error once now. I guess I just need to run the test a number of times looking for it. I am investigating. >>> >>> -dl >>> >> >> Hi David, >> >> I finally got the uprobe-v2 branch of https://git.linaro.org/gitweb?p=people/davelong/linux.git;a=summary working on my samsung arm chromebook (needed to use a newer exynos5250-snow.dtb file). I reran the at_var test with the newer kernel and do not see the sigsegv. >> >> I am going to rerun the test tests with this kernel and see if the problem went away with the newer version of the patches. >> >> -Will >> > > > I'm still seeing the SEGV with my latest patches on V3.12 on a Panda. > > -dl > Hi David, With the uprobe-v2 version I only saw one test that appeared to fail because of a sigsegv: FAIL: 32_BIT_UTRACE_SYSCALL_ARGS I have uploaded the test results of the systemtap run with the uprobes-v2 branch to the systemtap dejazilla system: web.elastic.org/~dejazilla/viewsummary.php?summary=%3D%27%3C527A58AC.9000301%40redhat.com%3E%27 dejazilla allows comparison between different systemtap.sum files. I looked through the list of recent arm7l runs: https://web.elastic.org/~dejazilla/viewsummary.php?_offset=0&_limit=20&_sort=1A&summary=&age=&rg=&tool=&variant=%3D%27armv7l-unknown-linux-gnueabihf%27&versions=&pass=&fail=&kpass=&kfail=&xpass=&xfail=&untested=&unresolved=&unsupported=&warning=&error= The following URL is a comparison between the older uprobes and uprobes-v2 runs: https://web.elastic.org/~dejazilla/viewrgdiff.php?rg1=150513&rg2=822815&_sort=0A&_limit=1000 Some of the like minidebuginfo and process_by_cmd2.stp passed with the uprobes-v2 kernel. When searching for ways to test uprobes support I cam across https://github.com/rabinv/uprobes-test . Are these tests useful or have they been orphaned? -Will