[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. [....] Starting OpenBSD Secure Shell server: sshd[ 15.275353][ C1] random: crng init done [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.172' (ECDSA) to the list of known hosts. syzkaller login: [ 31.601897][ T21] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 31.841871][ T21] usb 1-1: Using ep0 maxpacket: 8 [ 31.961978][ T21] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x8F has wMaxPacketSize 0, skipping [ 31.972025][ T21] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x84 has an invalid bInterval 202, changing to 11 [ 31.983254][ T21] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x84 has invalid maxpacket 1805, setting to 1024 [ 31.994344][ T21] usb 1-1: New USB device found, idVendor=a257, idProduct=2013, bcdDevice=fc.a4 [ 32.003393][ T21] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 32.012684][ T21] usb 1-1: config 0 descriptor?? [ 32.032125][ T1719] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 32.053589][ T21] ------------[ cut here ]------------ [ 32.059151][ T21] usb 1-1: BOGUS urb xfer, pipe 3 != type 1 [ 32.065295][ T21] WARNING: CPU: 1 PID: 21 at drivers/usb/core/urb.c:478 usb_submit_urb+0x1188/0x13b0 [ 32.074742][ T21] Kernel panic - not syncing: panic_on_warn set ... [ 32.081306][ T21] CPU: 1 PID: 21 Comm: kworker/1:1 Not tainted 5.5.0-rc2-syzkaller #0 [ 32.089481][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.099563][ T21] Workqueue: usb_hub_wq hub_event [ 32.104564][ T21] Call Trace: [ 32.107835][ T21] dump_stack+0xef/0x16e [ 32.112053][ T21] ? usb_submit_urb+0x1140/0x13b0 [ 32.117052][ T21] panic+0x2aa/0x6e1 [ 32.120931][ T21] ? add_taint.cold+0x16/0x16 [ 32.125586][ T21] ? __probe_kernel_read+0x188/0x1d0 [ 32.130848][ T21] ? __warn.cold+0x14/0x30 [ 32.135240][ T21] ? __warn+0xd5/0x1c8 [ 32.139329][ T21] ? usb_submit_urb+0x1188/0x13b0 [ 32.144373][ T21] __warn.cold+0x2f/0x30 [ 32.148594][ T21] ? usb_submit_urb+0x1188/0x13b0 [ 32.153629][ T21] report_bug+0x27b/0x2f0 [ 32.158043][ T21] do_error_trap+0x12b/0x1e0 [ 32.162619][ T21] ? usb_submit_urb+0x1188/0x13b0 [ 32.167620][ T21] do_invalid_op+0x32/0x40 [ 32.172013][ T21] ? usb_submit_urb+0x1188/0x13b0 [ 32.177060][ T21] invalid_op+0x23/0x30 [ 32.181214][ T21] RIP: 0010:usb_submit_urb+0x1188/0x13b0 [ 32.186836][ T21] Code: 4d 85 ed 74 2c e8 78 90 e7 fd 4c 89 f7 e8 70 2c 1d ff 41 89 d8 44 89 e1 4c 89 ea 48 89 c6 48 c7 c7 80 59 15 86 e8 20 ad bc fd <0f> 0b e9 20 f4 ff ff e8 4c 90 e7 fd 4c 89 f2 48 b8 00 00 00 00 00 [ 32.206422][ T21] RSP: 0018:ffff8881da317168 EFLAGS: 00010286 [ 32.213604][ T21] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 [ 32.221617][ T21] RDX: 0000000000000000 RSI: ffffffff81295dad RDI: ffffed103b462e1f [ 32.229713][ T21] RBP: ffff8881d4c4e550 R08: ffff8881da24e200 R09: fffffbfff11f1eb6 [ 32.238129][ T21] R10: fffffbfff11f1eb5 R11: ffffffff88f8f5af R12: 0000000000000003 [ 32.246093][ T21] R13: ffff8881d37ff018 R14: ffff8881c7dec0a0 R15: ffff8881d4c4e300 [ 32.254068][ T21] ? vprintk_func+0x7d/0x113 [ 32.258656][ T21] ? usb_submit_urb+0x1188/0x13b0 [