Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751498AbdFGJFn (ORCPT ); Wed, 7 Jun 2017 05:05:43 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:56944 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751456AbdFGJFi (ORCPT ); Wed, 7 Jun 2017 05:05:38 -0400 To: cl@linux.com Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, heiko.carstens@de.ibm.com From: Andre Wild Subject: BUG: using __this_cpu_read() in preemptible [00000000] code: mm_percpu_wq/7 Date: Wed, 7 Jun 2017 11:05:32 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.1.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 x-cbid: 17060709-0040-0000-0000-000003C386A5 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17060709-0041-0000-0000-0000205B5DFA Message-Id: X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-06-07_07:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=1 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1703280000 definitions=main-1706070165 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1554 Lines: 28 Hi Christoph, I'm currently seeing the following message running kernel version 4.11.0. It looks like it was introduced with the patch 4037d452202e34214e8a939fa5621b2b3bbb45b7. Can you please take a look at this problem? [Tue Jun 6 15:27:03 2017] BUG: using __this_cpu_read() in preemptible [00000000] code: mm_percpu_wq/7 [Tue Jun 6 15:27:03 2017] caller is refresh_cpu_vm_stats+0x198/0x3d8 [Tue Jun 6 15:27:03 2017] CPU: 0 PID: 7 Comm: mm_percpu_wq Tainted: G W 4.11.0-20170529.0.ae409ab.224a322.fc25.s390xdefault #1 [Tue Jun 6 15:27:03 2017] Workqueue: mm_percpu_wq vmstat_update [Tue Jun 6 15:27:03 2017] Call Trace: [Tue Jun 6 15:27:03 2017] ([<00000000001138ea>] show_trace+0x8a/0xe0) [Tue Jun 6 15:27:03 2017] [<00000000001139c0>] show_stack+0x80/0xd8 [Tue Jun 6 15:27:03 2017] [<000000000074488e>] dump_stack+0x96/0xd8 [Tue Jun 6 15:27:03 2017] [<000000000077afaa>] check_preemption_disabled+0xea/0x108 [Tue Jun 6 15:27:03 2017] [<00000000002ec198>] refresh_cpu_vm_stats+0x198/0x3d8 [Tue Jun 6 15:27:03 2017] [<00000000002ed306>] vmstat_update+0x2e/0x98 [Tue Jun 6 15:27:03 2017] [<0000000000167450>] process_one_work+0x3d8/0x780 [Tue Jun 6 15:27:03 2017] [<00000000001688dc>] rescuer_thread+0x224/0x3d0 [Tue Jun 6 15:27:03 2017] [<0000000000170096>] kthread+0x166/0x178 [Tue Jun 6 15:27:03 2017] [<0000000000a4d69a>] kernel_thread_starter+0x6/0xc [Tue Jun 6 15:27:03 2017] [<0000000000a4d694>] kernel_thread_starter+0x0/0xc [Tue Jun 6 15:27:03 2017] INFO: lockdep is turned off. Kind regards, André