[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. [ 15.160780][ C1] random: crng init done [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.183' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 27.509563][ T85] usb 1-1: new full-speed USB device number 2 using dummy_hcd [ 27.909616][ T85] usb 1-1: unable to get BOS descriptor or descriptor too short [ 28.109624][ T85] usb 1-1: config 218 has an invalid interface number: 137 but max is 0 [ 28.118879][ T85] usb 1-1: config 218 has no interface number 0 [ 28.125286][ T85] usb 1-1: config 218 interface 137 has no altsetting 0 [ 28.369603][ T85] usb 1-1: string descriptor 0 read error: -22 [ 28.375922][ T85] usb 1-1: New USB device found, idVendor=133e, idProduct=0815, bcdDevice=4e.f2 [ 28.385202][ T85] usb 1-1: New USB device strings: Mfr=7, Product=255, SerialNumber=0 [ 28.432129][ T85] kasan: CONFIG_KASAN_INLINE enabled [ 28.437508][ T85] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.445702][ T85] general protection fault: 0000 [#1] SMP KASAN [ 28.452035][ T85] CPU: 1 PID: 85 Comm: kworker/1:2 Not tainted 5.3.0-rc2+ #23 [ 28.459473][ T85] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.469527][ T85] Workqueue: usb_hub_wq hub_event [ 28.474547][ T85] RIP: 0010:snd_usb_pipe_sanity_check+0x80/0x130 [ 28.481183][ T85] Code: 48 c1 ea 03 80 3c 02 00 0f 85 b3 00 00 00 48 8b 6d 00 c1 eb 1e 48 b8 00 00 00 00 00 fc ff df 48 8d 7d 03 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 7b 48 b8 00 00 [ 28.500776][ T85] RSP: 0018:ffff8881d932f0a8 EFLAGS: 00010246 [ 28.507156][ T85] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffff8484d252 [ 28.515117][ T85] RDX: 0000000000000000 RSI: ffffffff8484d26c RDI: 0000000000000003 [ 28.523064][ T85] RBP: 0000000000000000 R08: ffff8881d9716000 R09: fffffbfff115e19a [ 28.531012][ T85] R10: fffffbfff115e199 R11: ffffffff88af0ccf R12: 0000000000000000 [ 28.538968][ T85] R13: dffffc0000000000 R14: ffff8881d3dbf700 R15: ffff8881d3dbef20 [ 28.546927][ T85] FS: 0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 [ 28.555843][ T85] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.562510][ T85] CR2: 00007f1216345000 CR3: 00000001d344d000 CR4: 00000000001406e0 [ 28.570541][ T85] Call Trace: [ 28.573824][ T85] snd_usb_apply_boot_quirk+0xa19/0xc60 [ 28.579368][ T85] ? snd_usb_apply_interface_quirk+0x5f0/0x5f0 [ 28.585554][ T85] ? mark_lock+0xbc/0x1130 [ 28.589957][ T85] ? __lock_acquire+0x145e/0x3b50 [ 28.595017][ T85] ? mark_lock+0xbc/0x1130 [ 28.599431][ T85] usb_audio_probe+0x2ec/0x2010 [ 28.604417][ T85] ? usb_audio_resume+0x20/0x20 [ 28.609277][ T85] ? mark_held_locks+0x9f/0xe0 [ 28.614553][ T85] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 28.620639][ T85] usb_probe_interface+0x305/0x7a0 [ 28.625741][ T85] ? usb_probe_device+0x100/0x100 [ 28.630752][ T85] really_probe+0x281/0x650 [ 28.635239][ T85] driver_probe_device+0x101/0x1b0 [ 28.640426][ T85] __device_attach_driver+0x1c2/0x220 [ 28.645794][ T85] ? driver_allows_async_probing+0x160/0x160 [ 28.651753][ T85] bus_for_each_drv+0x15c/0x1e0 [ 28.656586][ T85] ? bus_rescan_devices+0x20/0x20 [ 28.661595][ T85] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 28.667395][ T85] ? lockdep_hardirqs_on+0x379/0x580 [ 28.672747][ T85] __device_attach+0x217/0x360 [ 28.677533][ T85] ? device_bind_driver+0xd0/0xd0 [ 28.682543][ T85] ? kobject_uevent_env+0x29e/0x1160 [ 28.687808][ T85] ? kobject_uevent_env+0x2a8/0x1160 [ 28.693077][ T85] bus_probe_device+0x1e4/0x290 [ 28.697912][ T85] ? blocking_notifier_call_chain+0x54/0xa0 [ 28.703785][ T85] device_add+0xae6/0x16f0 [ 28.708224][ T85] ? uevent_store+0x50/0x50 [ 28.712717][ T85] usb_set_configuration+0xdf6/0x1670 [ 28.718076][ T85] generic_probe+0x9d/0xd5 [ 28.722484][ T85] usb_probe_device+0x99/0x100 [ 28.727255][ T85] ? usb_suspend+0x620/0x620 [ 28.731881][ T85] really_probe+0x281/0x650 [ 28.736379][ T85] driver_probe_device+0x101/0x1b0 [ 28.741647][ T85] __device_attach_driver+0x1c2/0x220 [ 28.747011][ T85] ? driver_allows_async_probing+0x160/0x160 [ 28.752970][ T85] bus_for_each_drv+0x15c/0x1e0 [ 28.757806][ T85] ? bus_rescan_devices+0x20/0x20 [ 28.762872][ T85] ? _raw_spin_unlock_irqrestore+0x3e/0x50 [ 28.768708][ T85] ? lockdep_hardirqs_on+0x379/0x580 [ 28.774038][ T85] __device_attach+0x217/0x360 [ 28.778795][ T85] ? device_bind_driver+0xd0/0xd0 [ 28.783806][ T85] ? kobject_uevent_env+0x29e/0x1160 [ 28.789073][ T85] ? kobject_uevent_env+0x2a8/0x1160 [ 28.794343][ T85] bus_probe_device+0x1e4/0x290 [ 28.799183][ T85] ? blocking_notifier_call_chain+0x54/0xa0 [ 28.805242][ T85] device_add+0xae6/0x16f0 [ 28.809686][ T85] ? uevent_store+0x50/0x50 [ 28.814181][ T85] usb_new_device.cold+0x6a4/0xe79 [ 28.819278][ T85] hub_event+0x1b5c/0x3640 [ 28.823854][ T85] ? hub_port_debounce+0x260/0x260 [ 28.828958][ T85] process_one_work+0x92b/0x1530 [