[ 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