[[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2. [ 13.788985][ C1] random: crng init done [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.96' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 25.841743][ T17] usb 1-1: new low-speed USB device number 2 using dummy_hcd [ 26.201766][ T17] usb 1-1: config 0 has an invalid interface number: 137 but max is 0 [ 26.210006][ T17] usb 1-1: config 0 has an invalid descriptor of length 0, skipping remainder of the config [ 26.220132][ T17] usb 1-1: config 0 has no interface number 0 [ 26.226269][ T17] usb 1-1: config 0 interface 137 altsetting 0 endpoint 0x81 is Bulk; changing to Interrupt [ 26.236389][ T17] usb 1-1: New USB device found, idVendor=04d8, idProduct=0a30, bcdDevice=81.29 [ 26.245437][ T17] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 26.255477][ T17] usb 1-1: config 0 descriptor?? [ 26.271865][ T1790] raw-gadget gadget: fail, usb_ep_enable returned -22 [ 26.295465][ T17] ------------[ cut here ]------------ [ 26.301032][ T17] usb 1-1: BOGUS urb xfer, pipe 3 != type 1 [ 26.307222][ T17] WARNING: CPU: 1 PID: 17 at drivers/usb/core/urb.c:478 usb_submit_urb+0x1188/0x1460 [ 26.316713][ T17] Kernel panic - not syncing: panic_on_warn set ... [ 26.323284][ T17] CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.6.0-rc3-syzkaller #0 [ 26.331461][ T17] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.341512][ T17] Workqueue: usb_hub_wq hub_event [ 26.346513][ T17] Call Trace: [ 26.349800][ T17] dump_stack+0xef/0x16e [ 26.354020][ T17] ? usb_submit_urb+0x1090/0x1460 [ 26.359037][ T17] panic+0x2aa/0x6e1 [ 26.362941][ T17] ? add_taint.cold+0x16/0x16 [ 26.367618][ T17] ? __probe_kernel_read+0x188/0x1d0 [ 26.373026][ T17] ? __warn.cold+0x14/0x30 [ 26.377443][ T17] ? __warn+0xd5/0x1c8 [ 26.381524][ T17] ? usb_submit_urb+0x1188/0x1460 [ 26.386552][ T17] __warn.cold+0x2f/0x30 [ 26.390792][ T17] ? usb_submit_urb+0x1188/0x1460 [ 26.395932][ T17] report_bug+0x27b/0x2f0 [ 26.400252][ T17] do_error_trap+0x12b/0x1e0 [ 26.404832][ T17] ? usb_submit_urb+0x1188/0x1460 [ 26.409839][ T17] do_invalid_op+0x32/0x40 [ 26.414246][ T17] ? usb_submit_urb+0x1188/0x1460 [ 26.419267][ T17] invalid_op+0x23/0x30 [ 26.423417][ T17] RIP: 0010:usb_submit_urb+0x1188/0x1460 [ 26.429038][ T17] 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 [ 26.448636][ T17] RSP: 0018:ffff8881da267170 EFLAGS: 00010286 [ 26.454679][ T17] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 [ 26.462635][ T17] RDX: 0000000000000000 RSI: ffffffff812977dd RDI: ffffed103b44ce20 [ 26.470639][ T17] RBP: ffff8881ce330400 R08: ffff8881da24b100 R09: fffffbfff1266c8f [ 26.478629][ T17] R10: fffffbfff1266c8e R11: ffffffff89336477 R12: 0000000000000003 [ 26.486597][ T17] R13: ffff8881d072e0f0 R14: ffff8881cdaf20a0 R15: ffff8881d4e3c200 [ 26.494602][ T17] ? vprintk_func+0x7d/0x113 [ 26.499173][ T17] mcba_usb_probe+0x83a/0