From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 48720 invoked by alias); 13 Jun 2016 16:11:11 -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 48689 invoked by uid 89); 13 Jun 2016 16:11:10 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-3.3 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD,SPF_HELO_PASS autolearn=ham version=3.3.2 spammy=RUNTESTFLAGS, runtestflags, H*MI:sk:befacf5, survived 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; Mon, 13 Jun 2016 16:11:00 +0000 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (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 641428F89C; Mon, 13 Jun 2016 16:10:59 +0000 (UTC) Received: from [10.13.129.159] (dhcp129-159.rdu.redhat.com [10.13.129.159]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u5DGAwc6026779; Mon, 13 Jun 2016 12:10:58 -0400 Subject: Re: exercising current aarch64 kprobe support with systemtap To: systemtap@sourceware.org, Dave Long , Pratyush Anand , Mark Brown References: From: William Cohen Message-ID: <73cc2f02-691c-4f96-433f-4d3d0def8b50@redhat.com> Date: Mon, 13 Jun 2016 16:11:00 -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=utf-8 Content-Transfer-Encoding: 7bit X-IsSubscribed: yes X-SW-Source: 2016-q2/txt/msg00221.txt.bz2 I dummied up the hw_addr_*.stp tests to not run. The test made it further, but then got stuck spewing out: [ 1648.037580] Unexpected kernel single-step exception at EL1 [ 1648.043060] Unexpected kernel single-step exception at EL1 [ 1648.048540] Unexpected kernel single-step exception at EL1 This happens during the "systemtap.onthefly/kprobes_onthefly.exp" tests and can be reliably triggered running that portion of the systemtap tests with: make installcheck RUNTESTFLAGS="--debug systemtap.onthefly/kprobes_onthefly.exp" Seems like the tests get past the following and then start spewing the error message: Executing: kill -KILL 22311 kill: kill: sending signal to 22311 failed: No such process PASS: kprobes_onthefly - otf_stress_hard_iter_2000 (survived) However the testsuite doesn't seem to make it through to print out the next test: PASS: hrtimer_onthefly - otf_stress_max_iter_5000 (survived) Note that this kernel (clone of https://github.com/pratyushanand/linux on test_upstream_arm64_devel branch) does have the patch to avoid having the atomic region search go before the start of a function by look for the "stp x29, x30, [sp, -#xx]!" -Will