[  OK  ] Started Serial Getty on ttyS0.
[  OK  ] Reached target Login Prompts.
[  OK  ] Reached target Multi-User System.
[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.1.100' (ECDSA) to the list of known hosts.
syzkaller login: [   61.573216][    T7] usb 1-1: new high-speed USB device number 2 using dummy_hcd
[   61.813101][    T7] usb 1-1: Using ep0 maxpacket: 16
[   61.933241][    T7] usb 1-1: config index 0 descriptor too short (expected 57, got 27)
[   61.942861][    T7] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 255, changing to 11
[   61.956995][    T7] usb 1-1: New USB device found, idVendor=04d8, idProduct=0a30, bcdDevice=ac.31
[   61.967594][    T7] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[   61.980809][    T7] usb 1-1: config 0 descriptor??
[   62.031228][    T7] ------------[ cut here ]------------
[   62.040287][    T7] usb 1-1: BOGUS urb xfer, pipe 3 != type 1
[   62.046822][    T7] WARNING: CPU: 0 PID: 7 at drivers/usb/core/urb.c:494 usb_submit_urb+0xacd/0x1550
[   62.056642][    T7] Modules linked in:
[   62.061472][    T7] CPU: 0 PID: 7 Comm: kworker/0:1 Not tainted 5.13.0-rc3-syzkaller #0
[   62.069944][    T7] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   62.080417][    T7] Workqueue: usb_hub_wq hub_event
[   62.085653][    T7] RIP: 0010:usb_submit_urb+0xacd/0x1550
[   62.091422][    T7] Code: d8 48 c1 e8 03 42 8a 04 28 84 c0 0f 85 bd 07 00 00 44 8b 03 48 c7 c7 80 86 e1 8a 4c 89 f6 4c 89 fa 89 e9 31 c0 e8 83 cb 8f fb <0f> 0b 4c 8b 74 24 30 45 89 f7 4c 89 ff 48 c7 c6 70 e1 8d 8d e8 8a
[   62.111540][    T7] RSP: 0018:ffffc90000cc6980 EFLAGS: 00010246
[   62.117915][    T7] RAX: 86634d5edbebd900 RBX: ffffffff8ae184ac RCX: ffff888012b3b880
[   62.126059][    T7] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
[   62.134150][    T7] RBP: 0000000000000003 R08: ffffffff81655632 R09: ffffed1017345f90
[   62.142628][    T7] R10: ffffed1017345f90 R11: 0000000000000000 R12: ffff88802519df00
[   62.150940][    T7] R13: dffffc0000000000 R14: ffffffff8ae226e0 R15: ffff8880197258c0
[   62.159195][    T7] FS:  0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
[   62.168706][    T7] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   62.175409][    T7] CR2: 0000559607207160 CR3: 0000000018b80000 CR4: 00000000001506f0
[   62.183651][    T7] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   62.191751][    T7] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   62.199999][    T7] Call Trace:
[   62.203562][    T7]  ? usb_anchor_urb+0x1d2/0x250
[   62.208441][    T7]  mcba_usb_probe+0xc88/0x1420
[   62.213498][    T7]  ? asan.module_dtor+0x20/0x20
[   62.218507][    T7]  ? pm_runtime_enable+0x114/0x300
[   62.224067][    T7]  ? __pm_runtime_set_status+0xaf1/0xdf0
[   62.229851][    T7]  usb