Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751979AbbBEBr3 (ORCPT ); Wed, 4 Feb 2015 20:47:29 -0500 Received: from szxga01-in.huawei.com ([119.145.14.64]:7033 "EHLO szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751046AbbBEBr2 (ORCPT ); Wed, 4 Feb 2015 20:47:28 -0500 Message-ID: <54D2CB9F.4090703@huawei.com> Date: Thu, 5 Feb 2015 09:47:11 +0800 From: Ding Tianhong User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20100101 Thunderbird/24.0.1 MIME-Version: 1.0 To: Catalin Marinas CC: Will Deacon , Arnd Bergmann , Linuxarm , "linux-kernel@vger.kernel.org" Subject: Re: Meet the bugs for linux-3.19-rc4 on aarch64 board References: <54D23805.5090008@huawei.com> <20150204170951.GE26006@e104818-lin.cambridge.arm.com> In-Reply-To: <20150204170951.GE26006@e104818-lin.cambridge.arm.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.177.22.246] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1312 Lines: 36 On 2015/2/5 1:09, Catalin Marinas wrote: > On Wed, Feb 04, 2015 at 03:17:25PM +0000, Ding Tianhong wrote: >> bad mode in Synchronous Abort handler detected, code 0x86000005 >> CPU: 1 PID: 381 Comm: kworker/1:1 Tainted: G O 3.19.0-rc4+ #6 >> Hardware name: Hisilicon Board ESL (DT) >> Workqueue: events (null) >> task: ffffffc01cdb5800 ti: ffffffc01db28000 task.ti: ffffffc01db28000 >> PC is at 0x0 >> LR is at process_one_work+0x144/0x33c > > This looks like process_one_work() tried to execute address 0, possibly > when it does: > > worker->current_func(work); > >> Internal error: Oops - bad mode: 0 [#1] SMP >> Modules linked in: sre(O) >> CPU: 1 PID: 381 Comm: kworker/1:1 Tainted: G O 3.19.0-rc4+ #6 >> Hardware name: Hisilicon Board ESL (DT) >> Workqueue: events (null) > > So there is an "events" workqueue with a NULL function which > process_one_work() tries to call. You could add some more debugging in > this function or you could start bisecting (could check 3.18 first). > ok, try it, thanks. Ding -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/