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=-4.0 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no 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 36957C433E2 for ; Thu, 16 Jul 2020 04:18:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 210DA20787 for ; Thu, 16 Jul 2020 04:18:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726130AbgGPESZ (ORCPT ); Thu, 16 Jul 2020 00:18:25 -0400 Received: from mail-il1-f199.google.com ([209.85.166.199]:48682 "EHLO mail-il1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725928AbgGPESZ (ORCPT ); Thu, 16 Jul 2020 00:18:25 -0400 Received: by mail-il1-f199.google.com with SMTP id q9so2841753ilt.15 for ; Wed, 15 Jul 2020 21:18:24 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=BbQzChrVeBZgzn4hjDJtb4vWH12f22fdbm4mXnkKsBE=; b=D5RFmhn1cATFG2XnAdqtt2WLFrc0nctLvR9DYNI34kPOLzGO0+GGwXtlDO0hQEbQqr 8I2Urig0719GLVq3Sh7LGKEamqjZ/sTC0DLBbZ6Z3ARKamTztH9cEFuH4pdmlTBI/9m8 0+qWLlsEjgRfWsjz9V3Y+ImRG3ue/bfb3fdBBu+vJ9cGJp8qyvFrXUiaOOSwRiknNDIN DEEWIvbzniiO/fGWUTIoQUl0hID34ls43b6DGNNH72hCEX1o65RIZAbmZkz8e1ghA3WE 3vm83gNj25lMh+1USB+41Ut8JM3Gqne0PW1gJ4sN76y6nFDq+MJoL8tXR51QjjWTUFlT vedw== X-Gm-Message-State: AOAM530Sv7gMNQDEaRUx3MVojU5ec/TwtD3U8PzRW/biYmmGqsrciEJX qSAbtHJdxgRzeatB+8mu7o2iYWEhpq0MR8vZ/TeyLJEkyx5T X-Google-Smtp-Source: ABdhPJxn0t3XXp4BZ55iG/cnCjrWk9nsOKB0kw7qFhf+ESr8a4I1vwuxvpddNeTvzOHXlhGlXC8yAHV5kwh1yIR2Lweq5O1Nq86G MIME-Version: 1.0 X-Received: by 2002:a6b:d31a:: with SMTP id s26mr2732835iob.48.1594873103983; Wed, 15 Jul 2020 21:18:23 -0700 (PDT) Date: Wed, 15 Jul 2020 21:18:23 -0700 In-Reply-To: <000000000000ba65ba05a2fd48d9@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000d3284805aa87548a@google.com> Subject: Re: kernel BUG at net/core/dev.c:LINE! (3) From: syzbot To: andy@greyhouse.net, davem@davemloft.net, j.vosburgh@gmail.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, vfalico@gmail.com Content-Type: text/plain; charset="UTF-8" Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org syzbot has found a reproducer for the following issue on: HEAD commit: 4ff91fa0 Merge branch 'udp_tunnel-NIC-RX-port-offload-infr.. git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=1777b9bf100000 kernel config: https://syzkaller.appspot.com/x/.config?x=8a8f9de6c9d911de dashboard link: https://syzkaller.appspot.com/bug?extid=af23e7f3e0a7e10c8b67 compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13a7c4f7100000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+af23e7f3e0a7e10c8b67@syzkaller.appspotmail.com bond1 (unregistering): (slave wireguard2): Releasing backup interface bond1 (unregistering): (slave wireguard1): Releasing backup interface bond1 (unregistering): (slave wireguard0): Releasing backup interface device wireguard0 left promiscuous mode bond1 (unregistering): Destroying bond ------------[ cut here ]------------ kernel BUG at net/core/dev.c:8948! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 129 Comm: kworker/u4:3 Not tainted 5.8.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net RIP: 0010:rollback_registered_many+0x2be/0xf60 net/core/dev.c:8948 Code: 4c 89 e8 48 c1 e8 03 42 80 3c 20 00 0f 85 91 0c 00 00 48 b8 22 01 00 00 00 00 ad de 48 89 43 70 e9 b9 fe ff ff e8 82 19 3d fb <0f> 0b 4c 8d 7b 68 4c 8d 6b 70 eb a5 e8 71 19 3d fb 48 8b 74 24 10 RSP: 0018:ffffc90000e976b0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff8880a2bb0000 RCX: ffffffff86369018 RDX: ffff8880a8dcc2c0 RSI: ffffffff8636916e RDI: 0000000000000001 RBP: ffffc90000e97770 R08: 0000000000000000 R09: ffffffff8a7b9707 R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff8880a2bb0068 R14: ffffc90000e97718 R15: 0000000000000002 FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000e07978 CR3: 0000000093d17000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rollback_registered net/core/dev.c:9022 [inline] unregister_netdevice_queue+0x2dd/0x570 net/core/dev.c:10103 unregister_netdevice include/linux/netdevice.h:2762 [inline] bond_release_and_destroy drivers/net/bonding/bond_main.c:2212 [inline] bond_slave_netdev_event drivers/net/bonding/bond_main.c:3285 [inline] bond_netdev_event.cold+0xc1/0x10e drivers/net/bonding/bond_main.c:3398 notifier_call_chain+0xb5/0x200 kernel/notifier.c:83 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2033 call_netdevice_notifiers_extack net/core/dev.c:2045 [inline] call_netdevice_notifiers net/core/dev.c:2059 [inline] rollback_registered_many+0x665/0xf60 net/core/dev.c:8977 unregister_netdevice_many.part.0+0x1a/0x2f0 net/core/dev.c:10122 unregister_netdevice_many net/core/dev.c:10121 [inline] default_device_exit_batch+0x30c/0x3d0 net/core/dev.c:10605 ops_exit_list+0x10d/0x160 net/core/net_namespace.c:189 cleanup_net+0x4ea/0xa00 net/core/net_namespace.c:603 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415 kthread+0x3b5/0x4a0 kernel/kthread.c:291 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293 Modules linked in: ---[ end trace c01e039c1ee3796a ]--- RIP: 0010:rollback_registered_many+0x2be/0xf60 net/core/dev.c:8948 Code: 4c 89 e8 48 c1 e8 03 42 80 3c 20 00 0f 85 91 0c 00 00 48 b8 22 01 00 00 00 00 ad de 48 89 43 70 e9 b9 fe ff ff e8 82 19 3d fb <0f> 0b 4c 8d 7b 68 4c 8d 6b 70 eb a5 e8 71 19 3d fb 48 8b 74 24 10 RSP: 0018:ffffc90000e976b0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff8880a2bb0000 RCX: ffffffff86369018 RDX: ffff8880a8dcc2c0 RSI: ffffffff8636916e RDI: 0000000000000001 RBP: ffffc90000e97770 R08: 0000000000000000 R09: ffffffff8a7b9707 R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff8880a2bb0068 R14: ffffc90000e97718 R15: 0000000000000002 FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f091b46f018 CR3: 0000000097f54000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400