From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C2BF4C43387 for ; Thu, 20 Dec 2018 07:45:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8E8EB21720 for ; Thu, 20 Dec 2018 07:45:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730603AbeLTHpr (ORCPT ); Thu, 20 Dec 2018 02:45:47 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:35328 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727790AbeLTHpr (ORCPT ); Thu, 20 Dec 2018 02:45:47 -0500 Received: from pps.filterd (m0098409.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id wBK7iJcd085586 for ; Thu, 20 Dec 2018 02:45:46 -0500 Received: from e06smtp04.uk.ibm.com (e06smtp04.uk.ibm.com [195.75.94.100]) by mx0a-001b2d01.pphosted.com with ESMTP id 2pg54fn11k-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 20 Dec 2018 02:45:45 -0500 Received: from localhost by e06smtp04.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Thu, 20 Dec 2018 07:45:42 -0000 Received: from b06wcsmtp001.portsmouth.uk.ibm.com (b06wcsmtp001.portsmouth.uk.ibm.com [9.149.105.160]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id wBK7jfbU8782322 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 20 Dec 2018 07:45:41 GMT Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 357DAA4064; Thu, 20 Dec 2018 07:45:41 +0000 (GMT) Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0FAC2A4062; Thu, 20 Dec 2018 07:45:41 +0000 (GMT) Received: from oc7455500831.ibm.com (unknown [9.152.224.116]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with ESMTP; Thu, 20 Dec 2018 07:45:40 +0000 (GMT) To: Michael S Tsirkin , netdev@vger.kernel.org, "linux-kernel@vger.kernel.org" , "virtualization@lists.linux-foundation.org" From: Christian Borntraeger Subject: 4.20-rc6: WARNING: CPU: 30 PID: 197360 at net/core/flow_dissector.c:764 __skb_flow_dissect Openpgp: preference=signencrypt Autocrypt: addr=borntraeger@de.ibm.com; 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Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 Content-Language: en-US X-TM-AS-GCONF: 00 x-cbid: 18122007-0016-0000-0000-000002390D0F X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18122007-0017-0000-0000-0000329166B2 Message-Id: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-12-20_04:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=466 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1812200066 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Folks, I got this warning today. I cant tell when and why this happened, so I do not know yet how to reproduce. Maybe someone has a quick idea. [85109.572032] WARNING: CPU: 30 PID: 197360 at net/core/flow_dissector.c:764 __skb_flow_dissect+0x1f0/0x1318 [85109.572036] Modules linked in: vhost_net vhost macvtap macvlan tap vfio_ap vfio_mdev mdev vfio_iommu_type1 vfio kvm xt_CHECKSUM ipt_MASQUERADE tun bridge stp llc xt_tcpudp ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ip6table_nat nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat_ipv4 nf_nat iptable_mangle iptable_raw iptable_security nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip_set nfnetlink ip6table_filter ip6_tables iptable_filter dm_service_time rpcrdma sunrpc rdma_ucm rdma_cm configfs iw_cm ib_cm mlx4_ib ib_uverbs ib_core pkey ghash_s390 prng aes_s390 des_s390 des_generic sha512_s390 sha1_s390 zcrypt_cex4 zcrypt rng_core eadm_sch sch_fq_codel ip_tables x_tables mlx4_en mlx4_core sha256_s390 sha_common dm_multipath scsi_dh_rdac scsi_dh_emc scsi_dh_alua dm_mirror dm_region_hash dm_log dm_mod autofs4 [85109.572072] CPU: 30 PID: 197360 Comm: vhost-197330 Not tainted 4.20.0-20181213.rc6.git0.407d079170c1.300.fc29.s390x #1 [85109.572074] Hardware name: IBM 2964 NC9 712 (LPAR) [85109.572075] Krnl PSW : 0704c00180000000 000000000092e320 (__skb_flow_dissect+0x1f0/0x1318) [85109.572078] R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:0 PM:0 RI:0 EA:3 [85109.572080] Krnl GPRS: 000000000000002a 0000000000000000 000003e0385bfc84 0000000000d91e30 [85109.572081] 000003e0385bfc84 0000000000000000 0000000000000000 0000000000d91e30 [85109.572083] 000003e0385bfc84 000000000000000e 0000007e3eb88100 0000007ff3561e00 [85109.572084] 0000000000000806 0000000000b4f288 000003e0385bfbb8 000003e0385bfab0 [85109.572115] Krnl Code: 000000000092e312: e310b0180002 ltg %r1,24(%r11) 000000000092e318: a7740271 brc 7,92e7fa #000000000092e31c: a7f40001 brc 15,92e31e >000000000092e320: 91407003 tm 3(%r7),64 000000000092e324: a7740257 brc 7,92e7d2 000000000092e328: 5810f0b4 l %r1,180(%r15) 000000000092e32c: e54cf0c80000 mvhi 200(%r15),0 000000000092e332: c01b00000008 nilf %r1,8 [85109.572129] Call Trace: [85109.572130] ([<0000000000000000>] (null)) [85109.572134] [<000003ff800c81e4>] tap_sendmsg+0x384/0x430 [tap] [85109.572137] [<000003ff801acdee>] vhost_tx_batch.isra.10+0x66/0xe0 [vhost_net] [85109.572138] [<000003ff801ad61c>] handle_tx_copy+0x18c/0x568 [vhost_net] [85109.572140] [<000003ff801adab4>] handle_tx+0xbc/0x100 [vhost_net] [85109.572145] [<000003ff8019bbe8>] vhost_worker+0xc8/0x128 [vhost] [85109.572148] [<00000000001690b8>] kthread+0x140/0x160 [85109.572152] [<0000000000a84266>] kernel_thread_starter+0x6/0x10 [85109.572154] [<0000000000a84260>] kernel_thread_starter+0x0/0x10 [85109.572155] Last Breaking-Event-Address: [85109.572156] [<000000000092e31c>] __skb_flow_dissect+0x1ec/0x1318 [85109.572158] ---[ end trace 97c040a6691bc000 ]---