[info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c[ 15.993331][ 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 '10.128.0.33' (ECDSA) to the list of known hosts. syzkaller login: [ 25.579769][ T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 25.819729][ T12] usb 1-1: Using ep0 maxpacket: 8 [ 25.939863][ T12] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x8F has wMaxPacketSize 0, skipping [ 25.950059][ T12] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x84 has invalid maxpacket 1707, setting to 1024 [ 25.961376][ T12] usb 1-1: config 0 interface 0 altsetting 0 bulk endpoint 0x84 has invalid maxpacket 1024 [ 25.971442][ T12] usb 1-1: New USB device found, idVendor=a257, idProduct=2013, bcdDevice=fc.a4 [ 25.980527][ T12] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 25.989972][ T12] usb 1-1: config 0 descriptor?? [ 26.010026][ T1713] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 26.031872][ T12] dln2 1-1:0.0: USB write failed: -8 [ 26.037474][ T12] dln2 1-1:0.0: failed to initialize hardware [ 26.350093][ T12] dln2: probe of 1-1:0.0 failed with error -8 [ 26.358898][ T12] usb 1-1: USB disconnect, device number 2 [ 26.829672][ T12] usb 1-1: new low-speed USB device number 3 using dummy_hcd [ 27.189851][ T12] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x8F has wMaxPacketSize 0, skipping [ 27.200429][ T12] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x84 is Bulk; changing to Interrupt [ 27.210715][ T12] usb 1-1: New USB device found, idVendor=a257, idProduct=2013, bcdDevice=fc.a4 [ 27.219802][ T12] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 27.228997][ T12] usb 1-1: config 0 descriptor?? [ 27.249840][ T1713] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 27.270834][ T12] ------------[ cut here ]------------ [ 27.276394][ T12] usb 1-1: BOGUS urb xfer, pipe 3 != type 1 [ 27.282518][ T12] WARNING: CPU: 0 PID: 12 at drivers/usb/core/urb.c:477 usb_submit_urb+0x1188/0x13b0 [ 27.291972][ T12] Kernel panic - not syncing: panic_on_warn set ... [ 27.298562][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.5.0-rc1-syzkaller #0 [ 27.306883][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.317189][ T12] Workqueue: usb_hub_wq hub_event [ 27.322230][ T12] Call Trace: [ 27.325531][ T12] dump_stack+0xef/0x16e [ 27.329777][ T12] ? usb_submit_urb+0x1170/0x13b0 [ 27.334793][ T12] panic+0x2aa/0x6e1 [ 27.338679][ T12] ? add_taint.cold+0x16/0x16 [ 27.344543][ T12] ? __probe_kernel_read+0x188/0x1d0 [ 27.350102][ T12] ? __warn.cold+0x14/0x30 [ 27.354517][ T12] ? __warn+0xd5/0x1c8 [ 27.358572][ T12] ? usb_submit_urb+0x1188/0x13b0 [ 27.363577][ T12] __warn.cold+0x2f/0x30 [ 27.367887][ T12] ? usb_submit_urb+0x1188/0x13b0 [ 27.372896][ T12] report_bug+0x27b/0x2f0 [ 27.377226][ T12] do_error_trap+0x12b/0x1e0 [ 27.381797][ T12] ? usb_submit_urb+0x1188/0x13b0 [ 27.386802][ T12] do_invalid_op+0x32/0x40 [ 27.391213][ T12] ? usb_submit_urb+0x1188/0x13b0 [ 27.396399][ T12] invalid_op+0x23/0x30 [ 27.400762][ T12] RIP: 0010:usb_submit_urb+0x1188/0x13b0 [ 27.406831][ T12] Code: 4d 85 ed 74 2c e8 d8 8f e7 fd 4c 89 f7 e8 e0 2c 1d ff 41 89 d8 44 89 e1 4c 89 ea 48 89 c6 48 c7 c7 40 5a 15 86 e8 50 ac bc fd <0f> 0b e9 20 f4 ff ff e8 ac 8f e7 fd 4c 89 f2 48 b8 00 00 00 00 00 [ 27.426685][ T12] RSP: 0018:ffff8881da227168 EFLAGS: 00010286 [ 27.432901][ T12] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 [ 27.440907][ T12] RDX: 0000000000000000 RSI: ffffffff81295dad RDI: ffffed103b444e1f [ 27.449357][ T12