[[0;32m OK [0m] Started Getty on tty5. [[0;32m OK [0m] Started Getty on tty4. [[0;32m OK [0m] Started Getty on tty3. [[0;32m OK [0m] Started Getty on tty2. [[0;32m OK [0m] Started getty on tty2-tty6 if dbus and logind are not available. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.10' (ECDSA) to the list of known hosts. syzkaller login: [ 53.847651][ T8] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 54.367620][ T8] usb 1-1: New USB device found, idVendor=0af0, idProduct=d058, bcdDevice= 0.00 [ 54.376813][ T8] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 54.385423][ T8] usb 1-1: Product: syz [ 54.389909][ T8] usb 1-1: Manufacturer: syz [ 54.394566][ T8] usb 1-1: SerialNumber: syz [ 54.406991][ T8] usb 1-1: config 0 descriptor?? [ 54.667972][ T8] hso 1-1:0.0: Can't find BULK IN endpoint [ 54.674264][ T8] ------------[ cut here ]------------ [ 54.680402][ T8] WARNING: CPU: 0 PID: 8 at net/core/dev.c:10991 unregister_netdevice_many+0x22f/0x1980 [ 54.690933][ T8] Modules linked in: [ 54.694853][ T8] CPU: 0 PID: 8 Comm: kworker/0:2 Not tainted 5.13.0-rc3-syzkaller #0 [ 54.703315][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.713759][ T8] Workqueue: usb_hub_wq hub_event [ 54.719071][ T8] RIP: 0010:unregister_netdevice_many+0x22f/0x1980 [ 54.725732][ T8] Code: 62 17 00 00 e8 f2 9a 9d f9 4c 3b 74 24 10 0f 84 91 01 00 00 e8 e2 9a 9d f9 4d 89 f5 e9 4a ff ff ff 49 8d 5d a0 0f 1f 44 00 00 <0f> 0b 4c 89 ef e8 27 00 1f fc 84 c0 0f 84 9b 00 00 00 e8 ba 9a 9d [ 54.745773][ T8] RSP: 0018:ffffc90000cd67e0 EFLAGS: 00010246 [ 54.752090][ T8] RAX: 0000000000000000 RBX: ffff888022148000 RCX: dffffc0000000000 [ 54.760317][ T8] RDX: ffff888012b3d4c0 RSI: 0000000000000000 RDI: 0000000000000000 [ 54.768655][ T8] RBP: ffffc90000cd6970 R08: ffffffff87e16fb4 R09: fffffbfff1be5669 [ 54.776646][ T8] R10: fffffbfff1be5669 R11: 0000000000000000 R12: 1ffff1100442900c [ 54.784894][ T8] R13: ffff888022148060 R14: ffffc90000cd69c0 R15: 1ffff9200019ad21 [ 54.793212][ T8] FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 54.802440][ T8] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 54.809298][ T8] CR2: 00007f4a627c1ab4 CR3: 000000001eb02000 CR4: 00000000001506f0 [ 54.817648][ T8] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 54.825736][ T8] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 54.834009][ T8] Call Trace: [ 54.837450][ T8] ? really_probe+0x3cb/0x1020 [ 54.842333][ T8] ? driver_probe_device+0x178/0x350 [ 54.847735][ T8] ? unregister_netdev+0x79/0x210 [ 54.852774][ T8] ? hub_port_connect+0x1055/0x27a0 [ 54.858067][ T8] ? hub_port_connect_change+0x5d0/0xbf0 [ 54.863736][ T8] ? mutex_lock_io_nested+0x60/0x60 [