[info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [ 16.194203][ C1] random: crng init done [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.211' (ECDSA) to the list of known hosts. syzkaller login: [ 27.029404][ T95] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 27.119602][ T95] usb 1-1: Using ep0 maxpacket: 16 [ 27.239477][ T95] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x8E has an invalid bInterval 0, changing to 7 [ 27.250894][ T95] usb 1-1: config 0 interface 0 altsetting 0 bulk endpoint 0xF has invalid maxpacket 255 [ 27.419456][ T95] usb 1-1: New USB device found, idVendor=0bc7, idProduct=0005, bcdDevice=82.87 [ 27.428522][ T95] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 27.436758][ T95] usb 1-1: Product: syz [ 27.441028][ T95] usb 1-1: Manufacturer: syz [ 27.445786][ T95] usb 1-1: SerialNumber: syz [ 27.453125][ T95] usb 1-1: config 0 descriptor?? [ 27.469619][ T1793] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 27.490925][ T95] ------------[ cut here ]------------ [ 27.496446][ T95] usb 1-1: BOGUS urb xfer, pipe 1 != type 3 [ 27.502635][ T95] WARNING: CPU: 0 PID: 95 at drivers/usb/core/urb.c:478 usb_submit_urb+0x1188/0x1460 [ 27.512398][ T95] Kernel panic - not syncing: panic_on_warn set ... [ 27.518972][ T95] CPU: 0 PID: 95 Comm: kworker/0:2 Not tainted 5.5.0-rc7-syzkaller #0 [ 27.527112][ T95] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.537459][ T95] Workqueue: usb_hub_wq hub_event [ 27.542467][ T95] Call Trace: [ 27.545939][ T95] dump_stack+0xef/0x16e [ 27.550255][ T95] ? usb_submit_urb+0x1100/0x1460 [ 27.555267][ T95] panic+0x2aa/0x6e1 [ 27.559147][ T95] ? add_taint.cold+0x16/0x16 [ 27.563805][ T95] ? __probe_kernel_read+0x188/0x1d0 [ 27.569256][ T95] ? __warn.cold+0x14/0x30 [ 27.573668][ T95] ? __warn+0xd5/0x1c8 [ 27.577737][ T95] ? usb_submit_urb+0x1188/0x1460 [ 27.582777][ T95] __warn.cold+0x2f/0x30 [ 27.587048][ T95] ? usb_submit_urb+0x1188/0x1460 [ 27.592121][ T95] report_bug+0x27b/0x2f0 [ 27.596454][ T95] do_error_trap+0x12b/0x1e0 [ 27.601089][ T95] ? usb_submit_urb+0x1188/0x1460 [ 27.606226][ T95] do_invalid_op+0x32/0x40 [ 27.610811][ T95] ? usb_submit_urb+0x1188/0x1460 [ 27.615935][ T95] invalid_op+0x23/0x30 [ 27.620077][ T95] RIP: 0010:usb_submit_urb+0x1188/0x1460 [ 27.625701][ T95] Code: 4d 85 ed 74 46 e8 28 2d e1 fd 4c 89 f7 e8 d0 87 17 ff 41 89 d8 44 89 e1 4c 89 ea 48 89 c6 48 c7 c7 a0 2b 3b 86 e8 20 13 b6 fd <0f> 0b e9 20 f4 ff ff e8 fc 2c e1 fd 0f 1f 44 00 00 e8 f2 2c e1 fd [ 27.645408][ T95] RSP: 0018:ffff8881d5f2f0d8 EFLAGS: 00010286 [ 27.651598][ T95] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 27.659708][ T95] RDX: 0000000000000000 RSI: ffffffff81295a0d RDI: ffffed103abe5e0d [ 27.668107][ T95] RBP: f