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=-3.7 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 E3004C56202 for ; Wed, 25 Nov 2020 13:51:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9457F206D8 for ; Wed, 25 Nov 2020 13:51:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729654AbgKYNvT (ORCPT ); Wed, 25 Nov 2020 08:51:19 -0500 Received: from mail-il1-f198.google.com ([209.85.166.198]:42962 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729637AbgKYNvT (ORCPT ); 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Wed, 25 Nov 2020 05:51:18 -0800 (PST) Date: Wed, 25 Nov 2020 05:51:18 -0800 In-Reply-To: <00000000000041019205b4c4e9ad@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000c6d7a205b4eeb89b@google.com> Subject: Re: BUG: receive list entry not found for dev vxcan1, id 002, mask C00007FF From: syzbot To: davem@davemloft.net, kuba@kernel.org, linux-can@vger.kernel.org, linux-kernel@vger.kernel.org, mkl@pengutronix.de, netdev@vger.kernel.org, socketcan@hartkopp.net, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org syzbot has found a reproducer for the following issue on: HEAD commit: 470dfd80 lan743x: replace polling loop by wait_event_timeo.. git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=107c26a5500000 kernel config: https://syzkaller.appspot.com/x/.config?x=df65150a33f23d8c dashboard link: https://syzkaller.appspot.com/bug?extid=381d06e0c8eaacb8706f compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12bcd669500000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17ecad3e500000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+381d06e0c8eaacb8706f@syzkaller.appspotmail.com RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004442a9 RDX: 0000000000000018 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 00007ffc870fdef0 R08: 0000000000000001 R09: 0000000001bbbbbb R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc870fdf00 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ------------[ cut here ]------------ BUG: receive list entry not found for dev vxcan1, id 002, mask C00007FF WARNING: CPU: 0 PID: 8713 at net/can/af_can.c:546 can_rx_unregister+0x5a4/0x700 net/can/af_can.c:546 Modules linked in: CPU: 0 PID: 8713 Comm: syz-executor284 Not tainted 5.10.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:can_rx_unregister+0x5a4/0x700 net/can/af_can.c:546 Code: 8b 7c 24 78 44 8b 64 24 68 49 c7 c5 e0 de 56 8a e8 51 d3 95 f9 44 89 f9 44 89 e2 4c 89 ee 48 c7 c7 20 df 56 8a e8 a6 76 d3 00 <0f> 0b 48 8b 7c 24 28 e8 40 e9 0e 01 e9 54 fb ff ff e8 66 db d7 f9 RSP: 0018:ffffc90001b2fb38 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff888014db8000 RSI: ffffffff8158f3c5 RDI: fffff52000365f59 RBP: 0000000000000118 R08: 0000000000000001 R09: ffff8880b9e30627 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000002 R13: ffff8880261f0000 R14: 1ffff92000365f6e R15: 00000000c00007ff FS: 0000000000807880(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004bdfc4 CR3: 0000000014c7c000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: isotp_notifier+0x2a7/0x540 net/can/isotp.c:1303 call_netdevice_notifier net/core/dev.c:1735 [inline] call_netdevice_unregister_notifiers+0x156/0x1c0 net/core/dev.c:1763 call_netdevice_unregister_net_notifiers net/core/dev.c:1791 [inline] unregister_netdevice_notifier+0xcd/0x170 net/core/dev.c:1870 isotp_release+0x136/0x600 net/can/isotp.c:1011 __sock_release+0xcd/0x280 net/socket.c:596 sock_close+0x18/0x20 net/socket.c:1255 __fput+0x285/0x920 fs/file_table.c:281 task_work_run+0xdd/0x190 kernel/task_work.c:151 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop kernel/entry/common.c:164 [inline] exit_to_user_mode_prepare+0x17e/0x1a0 kernel/entry/common.c:191 syscall_exit_to_user_mode+0x38/0x260 kernel/entry/common.c:266 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x403b20 Code: 01 f0 ff ff 0f 83 40 0d 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 6d bc 2d 00 00 75 14 b8 03 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 14 0d 00 00 c3 48 83 ec 08 e8 7a 02 00 00 RSP: 002b:00007ffc870fdee8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000403b20 RDX: 0000000000000018 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 00007ffc870fdef0 R08: 0000000000000001 R09: 0000000001bbbbbb R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc870fdf00 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000