From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Fri, 10 Feb 2017 20:15:47 +0100 (CET) Received: from mail-qk0-x244.google.com ([IPv6:2607:f8b0:400d:c09::244]:33515 "EHLO mail-qk0-x244.google.com" rhost-flags-OK-OK-OK-OK) by eddie.linux-mips.org with ESMTP id S23992110AbdBJTPkGA4p0 (ORCPT ); Fri, 10 Feb 2017 20:15:40 +0100 Received: by mail-qk0-x244.google.com with SMTP id 11so6333972qkl.0; Fri, 10 Feb 2017 11:15:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:references:cc:from:message-id:date:user-agent :mime-version:in-reply-to:content-transfer-encoding; bh=byET5jzKCEf0VxNT/OHeLavmhqNDBvUbtFYqpTn/yDg=; b=d0cKSML1mBXj7UHUwxfxJn3nyFW6TW4zn7uW+xpYiAETSa2w5iA0PLZRz8bU3VwJRe QUuTt5ZXUlgc/CIidSqIsC8kPrcrVo+40zQxp+4OKuI0VhvFDtwB/DCGUWvUSmISD8Js j5mandg+Tg88NxeJ+SC6oVtsNXlsjcprxFVEkvxFQBPF0X/NNoggNdKhQVXgKFSC558h 3RsTLJXYT8Jmty+287/qterZFmccvOIhx1VxIIzXUjXGtKZy1g/1qf5EHYxP21S0ybAp PyY/prUz+fT9PEawNmIoyrsMIkzcYr+OZNyOJCJVZNr9vPVSj5ezBvDMNrUlxoMRUwC7 UhHA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:cc:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding; bh=byET5jzKCEf0VxNT/OHeLavmhqNDBvUbtFYqpTn/yDg=; b=p+JhC4oEk0fysXREUPf7mmEmbeWpAkRBagERNiNL3kGpyXkNsBE4c9VwS1vz7tvqeN 2OsKWR7sVtmmetyJhY15dmqpq+XyosWbtKMPCSrvlrZvUWHFM3GCOnLH0JHTAPfRD75v lpXlAhFRCC6YFUD/zQ5MrALVpcyqq9FKEby+dxY3eWbd04RumWDUoB87jAP/RNdUlEGa KXBRHzQYawILZ7/bPXbQJQwvMl4M9OgeqWTv0iWqDcHFzDgmLtL4CtumCWrmrJ66xcRx vjmI2knP2ZB/K1Yra4BYSABtMlbu6XUOS1KXilYZ9k25A9v4yiYQbCazvubGOs97M0aJ WC5A== X-Gm-Message-State: AMke39kmnefVDtPQn37Mj5PpOiWVCyshcnSHSwsXbyUREaTDvH+BBmar5r1K6Dg1zBx2HA== X-Received: by 10.55.76.18 with SMTP id z18mr9111717qka.263.1486754134305; Fri, 10 Feb 2017 11:15:34 -0800 (PST) Received: from [10.112.156.244] ([192.19.255.250]) by smtp.googlemail.com with ESMTPSA id u49sm2184582qtc.44.2017.02.10.11.15.32 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 10 Feb 2017 11:15:33 -0800 (PST) Subject: Re: Crash in -next due to 'MIPS: Add cacheinfo support' To: Guenter Roeck , James Hogan References: <20170208234523.GA13263@roeck-us.net> <20170210094011.GB24226@jhogan-linux.le.imgtec.org> <20170210103952.GC24226@jhogan-linux.le.imgtec.org> <20170210174644.GA15372@roeck-us.net> Cc: Justin Chen , Justin Chen , linux-mips@linux-mips.org, bcm-kernel-feedback-list@broadcom.com, Ralf Baechle From: Florian Fainelli Message-ID: <6360d767-39f9-ad9b-6ca4-cb16c617e3cc@gmail.com> Date: Fri, 10 Feb 2017 11:15:31 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.7.0 MIME-Version: 1.0 In-Reply-To: <20170210174644.GA15372@roeck-us.net> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 56761 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: f.fainelli@gmail.com Precedence: bulk List-help: List-unsubscribe: List-software: Ecartis version 1.0.0 List-Id: linux-mips X-List-ID: linux-mips List-subscribe: List-owner: List-post: List-archive: X-list: linux-mips On 02/10/2017 09:46 AM, Guenter Roeck wrote: > On Fri, Feb 10, 2017 at 10:39:52AM +0000, James Hogan wrote: >> On Fri, Feb 10, 2017 at 09:40:11AM +0000, James Hogan wrote: >>> Hi Guenter, >>> >>> On Thu, Feb 09, 2017 at 08:50:04PM -0800, Guenter Roeck wrote: >>>> On 02/09/2017 04:01 PM, Justin Chen wrote: >>>>> Hello Guenter, >>>>> >>>>> I am unable to reproduce the problem. May you give me more details? >>>>> >>>> The scripts I am using are available at >>>> >>>> https://github.com/groeck/linux-build-test/tree/master/rootfs >>>> >>>> in the mips and mipsel subdirectories (both crash). Individual >>>> build logs are always available at kerneltests.org/builders, >>>> in the 'next' column. >>> >>> Did you find it 100% reproducible? I was trying to reproduce yesterday >>> evening, and did hit it a few times, but then it stopped happening >>> before I could try and figure out what was going wrong. >> >> I switched to gcc 5.2 (buildroot toolchain) for building kernel, and now >> it reproduces every time :) >> > gcc 5.4.0 (binutils 2.26.1) also reliably crashes. The exact crash depends on > the kernel (-next is different to ToT + offending patch, qemu command line > makes a difference, qemu version makes a difference), but the crash is easy > to reproduce, at least for me. Just to clarify here, is the crash a combination of: - the kernel image, based on different trees/branches - different GCC versions - different ways of invoking QEMU/QEMU version? and essentially Justin's commit just made problem 1) to occur, but is not the root cause of the crash you are seeing? -- Florian