From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 5905 invoked by alias); 23 Jun 2016 03:19:36 -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 5619 invoked by uid 89); 23 Jun 2016 03:18:46 -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,SPF_PASS autolearn=ham version=3.3.2 spammy=Cohen, cohen, H*f:sk:8f40d0b, H*i:sk:8f40d0b X-HELO: mail-qk0-f170.google.com Received: from mail-qk0-f170.google.com (HELO mail-qk0-f170.google.com) (209.85.220.170) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES128-GCM-SHA256 encrypted) ESMTPS; Thu, 23 Jun 2016 03:18:36 +0000 Received: by mail-qk0-f170.google.com with SMTP id t127so91643101qkf.1 for ; Wed, 22 Jun 2016 20:18:36 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:subject:to:references:cc:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding; bh=m31EC06D5B2lUnYLAR4wB46tXxcKjHd4Hs3Du0PZiOk=; b=OQBAqWSZ9TIt96Aqg2rw7aLy2qLo6kgeYbgyQbAU1f1V42TJ155E3LArW7nDjSQn19 2cYiJJWEktVkArXyvt+lJsx3U2ZFWbYHtlqXSmlZYrfg7VoOmAQkBN4JsSu4M5Dk0DyB ZVygEJ1VuiltkkMf+tBGGHFVuEhPmjwVmzLGO5MR4BwEAXB2pw0sb2klvmxzF5UERYN2 /46T7UyChF224JyUSYRzRfUx8akfmyKLOmKoBgCvsiBrKJp/DWkQzu+98goDHzSLnzHd wJsmtAz40wtyERn/++n8X7/lRK99JGXLaxAm9NURKClSptdnUWv3Tx8CEdAc0OCeyC16 uezg== X-Gm-Message-State: ALyK8tKRD8HSuLmWR1JmOkHuTYM6RCPy9SirFJm8LOK9npA9icEXJciUGpFSSnRkx4KQ6rAp X-Received: by 10.55.102.20 with SMTP id a20mr41812261qkc.69.1466651914352; Wed, 22 Jun 2016 20:18:34 -0700 (PDT) Received: from [192.168.1.116] (pool-72-71-243-181.cncdnh.fast00.myfairpoint.net. [72.71.243.181]) by smtp.googlemail.com with ESMTPSA id j1sm1382891qtj.22.2016.06.22.20.18.33 (version=TLSv1/SSLv3 cipher=OTHER); Wed, 22 Jun 2016 20:18:33 -0700 (PDT) Subject: Re: exercising current aarch64 kprobe support with systemtap To: William Cohen , systemtap@sourceware.org, Pratyush Anand , Mark Brown References: <8f40d0b9-5550-92f9-d1c5-8769f52304c0@redhat.com> Cc: Jeremy Linton , David Smith From: David Long Message-ID: <576B5501.1030106@linaro.org> Date: Thu, 23 Jun 2016 03:19:00 -0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 MIME-Version: 1.0 In-Reply-To: <8f40d0b9-5550-92f9-d1c5-8769f52304c0@redhat.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-SW-Source: 2016-q2/txt/msg00275.txt.bz2 On 06/22/2016 04:24 PM, William Cohen wrote: > Hi all, > > When running the current systemtap checked out from the git repository > and a locally built kernel with the kprobes64-v13 patches (the > test_upstream_arm64_devel branch of > https://github.com/pratyushanand/linux) on Fedora 23 machine one of > the kprobes_onthefly.exp tests is causing the machine to get in a > state that requires rebooting to fix. This can be triggered by running a > portion of the systemtap tests with: > > make installcheck RUNTESTFLAGS="--debug systemtap.onthefly/kprobes_onthefly.exp" > > When it gets to the kprobes_onthefly - otf_stress_max_iter_5000 test the > console starts spewing the following and needs to be rebooted: > > [23394.036860] Unexpected kernel single-step exception at EL1 > [23394.042434] Unexpected kernel single-step exception at EL1 > [23394.048008] Unexpected kernel single-step exception at EL1 > [23394.053541] Unexpected kernel single-step exception at EL1 > [23394.059053] Unexpected kernel single-step exception at EL1 > [23394.064545] Unexpected kernel single-step exception at EL1 > > Sorry I don't have the start of the failure it scrolled off the screen very quickly. > > -Will > > I'll take a look and see what I can figure out. In the meantime I did just push a v14 branch. I'm doubtful that it will address the above problem even though it contains a few bug fixes. -dl