[  OK  ] Started Getty on tty1.
[  OK  ] Found device /dev/ttyS0.
[  OK  ] Started Serial Getty on ttyS0.
[  OK  ] Reached target Login Prompts.
[  OK  ] Started OpenBSD Secure Shell server.

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.1.34' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   56.131710][   T20] usb 1-1: new high-speed USB device number 2 using dummy_hcd
[   56.371747][   T20] usb 1-1: Using ep0 maxpacket: 8
[   56.491777][   T20] usb 1-1: config 0 has an invalid interface number: 59 but max is 0
[   56.500792][   T20] usb 1-1: config 0 has no interface number 0
[   56.508813][   T20] usb 1-1: config 0 interface 59 altsetting 0 bulk endpoint 0xB has invalid maxpacket 296
[   56.520077][   T20] usb 1-1: config 0 interface 59 altsetting 0 bulk endpoint 0x8A has invalid maxpacket 1
[   56.530939][   T20] usb 1-1: New USB device found, idVendor=10cf, idProduct=5503, bcdDevice=8f.60
[   56.540973][   T20] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[   56.554263][   T20] usb 1-1: config 0 descriptor??
[   56.573267][ T8412] raw-gadget gadget: fail, usb_ep_enable returned -22
[   56.580489][ T8412] raw-gadget gadget: fail, usb_ep_enable returned -22
[   56.600165][   T20] ------------[ cut here ]------------
[   56.606133][   T20] usb 1-1: BOGUS urb xfer, pipe 1 != type 3
[   56.614029][   T20] WARNING: CPU: 1 PID: 20 at drivers/usb/core/urb.c:494 usb_submit_urb+0xacd/0x1550
[   56.624469][   T20] Modules linked in:
[   56.629299][   T20] CPU: 1 PID: 20 Comm: kworker/1:0 Not tainted 5.13.0-rc5-syzkaller #0
[   56.638966][   T20] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   56.649278][   T20] Workqueue: usb_hub_wq hub_event
[   56.654900][   T20] RIP: 0010:usb_submit_urb+0xacd/0x1550
[   56.660604][   T20] Code: d8 48 c1 e8 03 42 8a 04 28 84 c0 0f 85 bd 07 00 00 44 8b 03 48 c7 c7 00 8a e1 8a 4c 89 f6 4c 89 fa 89 e9 31 c0 e8 83 d6 8f fb <0f> 0b 4c 8b 74 24 30 45 89 f7 4c 89 ff 48 c7 c6 b0 e1 8d 8d e8 8a
[   56.680426][   T20] RSP: 0018:ffffc90000da6880 EFLAGS: 00010246
[   56.686804][   T20] RAX: 0c18ab37a32f8700 RBX: ffffffff8ae18828 RCX: ffff888012c30000
[   56.694898][   T20] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
[   56.703138][   T20] RBP: 0000000000000001 R08: ffffffff81655632 R09: ffffed1017365f90
[   56.711327][   T20] R10: ffffed1017365f90 R11: 0000000000000000 R12: ffff888022972100
[   56.719643][   T20] R13: dffffc0000000000 R14: ffffffff8ae22a60 R15: ffff88801da57118
[   56.728053][   T20] FS:  0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
[   56.737100][   T20] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   56.743847][   T20] CR2: 00007f156613e000 CR3: 0000000018033000 CR4: 00000000001506e0
[   56.751902][   T20] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   56.759887][   T20] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   56.767943][   T20] Call Trace:
[   56.771249][   T20]  usb_start_wait_urb+0x11a/0x550
[   56.776371][   T20]  ? usb_api_blocking_completion+0xa0/0xa0
[   56.782265][   T20]  ? __kmalloc+0xb4/0x390
[   56.786617][   T20]  ? usb_alloc_urb+0x72/0x130
[   56.791289][   T20]  ? usb_bulk_msg+0x25e/0x4d0
[   56.796181][   T20]  vmk80xx_auto_attach+0xcc7/0x22d0