[info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[ 14.273243][ C1] random: crng init done [?25l[?1c7[ ok 8[?25h[?0c. [....] 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 '10.128.0.195' (ECDSA) to the list of known hosts. syzkaller login: [ 25.745364][ T83] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 25.985337][ T83] usb 1-1: Using ep0 maxpacket: 8 [ 26.105469][ T83] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x8F has wMaxPacketSize 0, skipping [ 26.115563][ T83] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x84 has an invalid bInterval 255, changing to 11 [ 26.126895][ T83] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x84 has invalid maxpacket 1334, setting to 1024 [ 26.137997][ T83] usb 1-1: New USB device found, idVendor=a257, idProduct=2013, bcdDevice=fc.a4 [ 26.147037][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 26.156569][ T83] usb 1-1: config 0 descriptor?? [ 26.175605][ T1714] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 26.196625][ T83] ------------[ cut here ]------------ [ 26.202203][ T83] usb 1-1: BOGUS urb xfer, pipe 3 != type 1 [ 26.208285][ T83] WARNING: CPU: 1 PID: 83 at drivers/usb/core/urb.c:477 usb_submit_urb+0x1188/0x13b0 [ 26.217830][ T83] Kernel panic - not syncing: panic_on_warn set ... [ 26.224443][ T83] CPU: 1 PID: 83 Comm: kworker/1:2 Not tainted 5.4.0-rc6+ #0 [ 26.231787][ T83] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.241830][ T83] Workqueue: usb_hub_wq hub_event [ 26.246870][ T83] Call Trace: [ 26.250159][ T83] dump_stack+0xca/0x13e [ 26.254383][ T83] ? usb_submit_urb+0x10c0/0x13b0 [ 26.259388][ T83] panic+0x2aa/0x6e1 [ 26.263262][ T83] ? add_taint.cold+0x16/0x16 [ 26.267919][ T83] ? __probe_kernel_read+0x188/0x1d0 [ 26.273194][ T83] ? __warn.cold+0x14/0x33 [ 26.277608][ T83] ? __warn+0xd5/0x1d0 [ 26.281689][ T83] ? usb_submit_urb+0x1188/0x13b0 [ 26.286725][ T83] __warn.cold+0x2f/0x33 [ 26.290944][ T83] ? usb_submit_urb+0x1188/0x13b0 [ 26.296043][ T83] report_bug+0x27b/0x2f0 [ 26.300370][ T83] do_error_trap+0x12b/0x1e0 [ 26.304949][ T83] ? usb_submit_urb+0x1188/0x13b0 [ 26.310074][ T83] do_invalid_op+0x32/0x40 [ 26.314526][ T83] ? usb_submit_urb+0x1188/0x13b0 [ 26.319534][ T83] invalid_op+0x23/0x30 [ 26.323676][ T83] RIP: 0010:usb_submit_urb+0x1188/0x13b0 [ 26.329375][ T83] Code: 4d 85 ed 74 2c e8 b8 21 ef fd 4c 89 f7 e8 40 34 1f ff 41 89 d8 44 89 e1 4c 89 ea 48 89 c6 48 c7 c7 40 77 14 86 e8 cd bc c4 fd <0f> 0b e9 20 f4 ff ff e8 8c 21 ef fd 4c 89 f2 48 b8 00 00 00 00 00 [ 26.349045][ T83] RSP: 0018:ffff8881d89ef180 EFLAGS: 00010286 [ 26.355087][ T83] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 [ 26.363036][ T83] RDX: 0000000000000000 RSI: ffffffff8128c9cd RDI: ffffed103b13de22 [ 26.371006][ T83] RBP: ffff8881d78d8350 R08: ffff8881d8c56000 R09: fffffbfff11ab3ae [ 26.378962][ T83] R10: fffffbfff11ab3ad R11: ffffffff88d59d6f R12: 0000000000000003 [ 26.386914][ T83] R13: ffff8881cc095960 R14: ffff8881cfc690a0 R15: ffff8881d78d8700 [ 26.394881][ T83] ? vprintk_func+0x7d/0x113 [ 26.399470][ T83] ? kasan_unpoison_shadow+0x30/0x40 [ 26.404735][ T83] dln2_start_r