From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 108164 invoked by alias); 14 Jun 2016 04:27:01 -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 108154 invoked by uid 89); 14 Jun 2016 04:27:00 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-2.6 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.2 spammy= X-HELO: mail-qg0-f48.google.com Received: from mail-qg0-f48.google.com (HELO mail-qg0-f48.google.com) (209.85.192.48) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES128-GCM-SHA256 encrypted) ESMTPS; Tue, 14 Jun 2016 04:26:50 +0000 Received: by mail-qg0-f48.google.com with SMTP id v48so60894623qgd.2 for ; Mon, 13 Jun 2016 21:26:50 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=R1dCSqNyN7OWMcOfjwFWaAnWUOkcPCIWc5hlbl5RQNk=; b=Ys+jpE83NGQZSlVC3YOVnmnGAcwE0ASxs/GDtk+HOcLOrpVDZ3eqgszOsZXKjfMwoM 9LSTF+zOK5Dd4gxfR8JOvDta2fc7MEHoHQP3vfKC4c+zya0CuOTGIfuNUflWd04lTl2i OcDdhMaRB91aTKH4udGWKA1mDIBmNYSKsHpEL1ufJoyxgs3aXpstn9OZMF9ICGy1keVg Ki7kv0M9hPxiN78uBXVStajATihg9YYUrZPf2zg7LLyg5hwYcaDtyhroFd64ZCerlREg N9dgVKhjp1npHwfP7NXfwJVxT7yiQ733EHUzZIxroHOoM4mUiZeT5RttQmhYRXlXSDrt Kd5A== X-Gm-Message-State: ALyK8tKxFshGiP8TpIL0m49zF89i8nasS/4xTahMgZRf+fVKes1uEq4hmYaJLZCSrdehUXaD X-Received: by 10.140.17.72 with SMTP id 66mr14255236qgc.11.1465878408258; Mon, 13 Jun 2016 21:26:48 -0700 (PDT) Received: from localhost ([122.177.222.230]) by smtp.gmail.com with ESMTPSA id a84sm7778076qhb.31.2016.06.13.21.26.46 (version=TLSv1/SSLv3 cipher=OTHER); Mon, 13 Jun 2016 21:26:47 -0700 (PDT) Date: Tue, 14 Jun 2016 04:27:00 -0000 From: Pratyush Anand To: William Cohen Cc: systemtap@sourceware.org, Dave Long , Mark Brown Subject: Re: exercising current aarch64 kprobe support with systemtap Message-ID: <20160614042643.GE6344@dhcppc6> References: <73cc2f02-691c-4f96-433f-4d3d0def8b50@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <73cc2f02-691c-4f96-433f-4d3d0def8b50@redhat.com> User-Agent: Mutt/1.6.1 (2016-04-27) X-IsSubscribed: yes X-SW-Source: 2016-q2/txt/msg00226.txt.bz2 On 13/06/2016:12:10:58 PM, William Cohen wrote: > 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]!" Hi Will, No, it should not have that modification yet. ~Pratyush > > -Will