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Wed, 25 Nov 2020 09:05:16 -0800 (PST) Date: Wed, 25 Nov 2020 09:05:16 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000006a69d505b4f16e83@google.com> Subject: BUG: receive list entry not found for dev vxcan1, id 003, 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 Hello, syzbot found 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=13f46c65500000 kernel config: https://syzkaller.appspot.com/x/.config?x=df65150a33f23d8c dashboard link: https://syzkaller.appspot.com/bug?extid=76d62d3b8162883c7d11 compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1164f8fd500000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=148ae72b500000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+76d62d3b8162883c7d11@syzkaller.appspotmail.com RAX: ffffffffffffffda RBX: 00007ffc766d7540 RCX: 0000000000443729 RDX: 0000000000000018 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000001bbbbbb R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000 ------------[ cut here ]------------ BUG: receive list entry not found for dev vxcan1, id 003, mask C00007FF WARNING: CPU: 1 PID: 8479 at net/can/af_can.c:546 can_rx_unregister+0x5a4/0x700 net/can/af_can.c:546 Modules linked in: CPU: 1 PID: 8479 Comm: syz-executor218 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:ffffc900016ff9f0 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff888020251a40 RSI: ffffffff8158f3c5 RDI: fffff520002dff30 RBP: 0000000000000118 R08: 0000000000000001 R09: ffff8880b9f30627 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000003 R13: ffff88802c1c0000 R14: 1ffff920002dff45 R15: 00000000c00007ff FS: 0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004c8908 CR3: 000000000b08e000 CR4: 00000000001506e0 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 exit_task_work include/linux/task_work.h:30 [inline] do_exit+0xb64/0x29b0 kernel/exit.c:809 do_group_exit+0x125/0x310 kernel/exit.c:906 __do_sys_exit_group kernel/exit.c:917 [inline] __se_sys_exit_group kernel/exit.c:915 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:915 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x442368 Code: Unable to access opcode bytes at RIP 0x44233e. RSP: 002b:00007ffc766d74a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000442368 RDX: 0000000000000001 RSI: 000000000000003c RDI: 0000000000000001 RBP: 00000000004c88d0 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006dd240 R14: 0000000000000000 R15: 0000000000000000 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches