[info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 13.866576][ C1] random: crng init done [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.50' (ECDSA) to the list of known hosts. syzkaller login: [ 25.090777][ T94] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 25.300868][ T94] usb 1-1: config 0 interface 0 altsetting 0 bulk endpoint 0x84 has invalid maxpacket 830 [ 25.311036][ T94] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0xF has invalid maxpacket 1536, setting to 64 [ 25.321932][ T94] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x7 has invalid wMaxPacketSize 0 [ 25.331627][ T94] usb 1-1: config 0 interface 0 altsetting 0 has an invalid endpoint with address 0x0, skipping [ 25.342135][ T94] usb 1-1: New USB device found, idVendor=1300, idProduct=5611, bcdDevice=40.15 [ 25.351309][ T94] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 25.360805][ T94] usb 1-1: config 0 descriptor?? [ 25.380916][ T1793] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 25.403000][ T94] hwa-hc 1-1:0.0: Wire Adapter v106.52 newer than groked v1.0 [ 25.410715][ T94] usb 1-1: BUG? WUSB host has no security descriptors [ 25.418341][ T94] ------------[ cut here ]------------ [ 25.424293][ T94] usb 1-1: BOGUS urb xfer, pipe 1 != type 3 [ 25.430348][ T94] WARNING: CPU: 0 PID: 94 at drivers/usb/core/urb.c:478 usb_submit_urb+0x1188/0x1460 [ 25.439788][ T94] Kernel panic - not syncing: panic_on_warn set ... [ 25.446401][ T94] CPU: 0 PID: 94 Comm: kworker/0:2 Not tainted 5.6.0-rc3-syzkaller #0 [ 25.454528][ T94] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.465211][ T94] Workqueue: usb_hub_wq hub_event [ 25.470852][ T94] Call Trace: [ 25.474124][ T94] dump_stack+0xef/0x16e [ 25.478355][ T94] ? usb_submit_urb+0x1090/0x1460 [ 25.483364][ T94] panic+0x2aa/0x6e1 [ 25.487309][ T94] ? add_taint.cold+0x16/0x16 [ 25.491969][ T94] ? __probe_kernel_read+0x188/0x1d0 [ 25.497251][ T94] ? __warn.cold+0x14/0x30 [ 25.501647][ T94] ? __warn+0xd5/0x1c8 [ 25.505737][ T94] ? usb_submit_urb+0x1188/0x1460 [ 25.510749][ T94] __warn.cold+0x2f/0x30 [ 25.515490][ T94] ? usb_submit_urb+0x1188/0x1460 [ 25.520491][ T94] report_bug+0x27b/0x2f0 [ 25.525576][ T94] do_error_trap+0x12b/0x1e0 [ 25.530143][ T94] ? usb_submit_urb+0x1188/0x1460 [ 25.535687][ T94] do_invalid_op+0x32/0x40 [ 25.540088][ T94] ? usb_submit_urb+0x1188/0x1460 [ 25.545089][ T94] invalid_op+0x23/0x30 [ 25.549218][ T94] RIP: 0010:usb_submit_urb+0x1188/0x1460 [ 25.554828][ T94] Code: 4d 85 ed 74 46 e8 18 ce dd fd 4c 89 f7 e8 d0 5c 17 ff 41 89 d8 44 89 e1 4c 89 ea 48 89 c6 48 c7 c7 e0 e7 3b 86 e8 a0 5f b2 fd <0f> 0b e9 20 f4 ff ff e8 ec cd dd fd 0f 1f 44 00 00 e8 e2 cd dd fd [ 25.574413][ T94] RSP: 0018:ffff8881d5cc7080 EFLAGS: 00010286 [ 25.580469][ T94] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 25.588434][ T94] RDX: 0000000000000000 RSI: ffffffff812977dd RDI: ffffed103ab98e02 [ 25.596399][ T94] RBP: ffff8881cdaf1400 R08: ffff8881d5cb8000 R09: ffffed103b646248