INIT: Entering runlevel: 2 [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[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.1.26' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 75.888066][ T93] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 75.908083][ T94] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 75.919538][ T5] usb 3-1: new high-speed USB device number 2 using dummy_hcd [ 75.932630][ T12] usb 6-1: new high-speed USB device number 2 using dummy_hcd [ 75.944816][ T1807] usb 2-1: new high-speed USB device number 2 using dummy_hcd [ 75.956093][ T1809] usb 4-1: new high-speed USB device number 2 using dummy_hcd [ 75.988836][ T93] usb 1-1: Using ep0 maxpacket: 32 [ 76.048802][ T1807] usb 2-1: Using ep0 maxpacket: 32 [ 76.055666][ T1809] usb 4-1: Using ep0 maxpacket: 32 [ 76.062771][ T94] usb 5-1: Using ep0 maxpacket: 32 [ 76.069101][ T12] usb 6-1: Using ep0 maxpacket: 32 [ 76.075148][ T5] usb 3-1: Using ep0 maxpacket: 32 [ 76.128164][ T93] usb 1-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 76.138561][ T93] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 76.149592][ T93] usb 1-1: config 0 descriptor?? [ 76.188227][ T12] usb 6-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 76.198794][ T12] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 76.207395][ T1807] usb 2-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 76.217287][ T1807] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 76.228092][ T94] usb 5-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 76.240242][ T94] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 76.249789][ T5] usb 3-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 76.259648][ T5] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 76.270194][ T1809] usb 4-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 76.281178][ T1809] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 76.294361][ T12] usb 6-1: config 0 descriptor?? [ 76.301137][ T5] usb 3-1: config 0 descriptor?? [ 76.308062][ T94] usb 5-1: config 0 descriptor?? [ 76.315387][ T1809] usb 4-1: config 0 descriptor?? [ 76.322579][ T1807] usb 2-1: config 0 descriptor?? [ 76.439633][ T93] hso 1-1:0.0: Failed to find BULK IN ep [ 76.558835][ T12] sysfs: cannot create duplicate filename '/class/tty/ttyHS0' [ 76.566641][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.6.0-rc3-syzkaller #0 [ 76.574892][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.586784][ T12] Workqueue: usb_hub_wq hub_event [ 76.592280][ T12] Call Trace: [ 76.595617][ T12] dump_stack+0xef/0x16e [ 76.599895][ T12] sysfs_warn_dup.cold+0x1c/0x2d [ 76.604847][ T12] sysfs_do_create_link_sd.isra.0+0x119/0x130 [ 76.612274][ T12] sysfs_create_link+0x61/0xc0 [ 76.617101][ T12] device_add+0x756/0x1bf0 [ 76.621541][ T12] ? lockdep_init_map+0x1b0/0x5e0 [ 76.627098][ T12] ? device_link_remove+0x110/0x110 [ 76.632539][ T12] ? __init_waitqueue_head+0x31/0x90 [ 76.638627][ T12] tty_register_device_attr+0x341/0x6f0 [ 76.646106][ T12] ? hung_up_tty_compat_ioctl+0x40/0x40 [ 76.651723][ T12] ? mark_held_locks+0x9f/0xe0 [ 76.657053][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 76.663236][ T12] ? tty_port_register_device_attr+0xb9/0x110 [ 76.669554][ T12] hso_serial_common_create+0x113/0x710 [ 76.676167][ T12] ? kasan_unpoison_shadow+0x30/0x40 [ 76.681886][ T12] hso_probe+0xc93/0x1b7b [ 76.686352][ T12] usb_probe_interface+0x310/0x800 [ 76.691614][ T12] ? usb_probe_device+0x230/0x230 [ 76.696928][ T12] really_probe+0x290/0xac0 [ 76.701546][ T12] driver_probe_device+0x223/0x350 [ 76.707406][ T12] __device_attach_driver+0x1d1/0x290 [ 76.715867][ T12] ? driver_allows_async_probing+0x160/0x160 [ 76.722624][ T12] bus_for_each_drv+0x162/0x1e0 [ 76.727502][ T12] ? bus_rescan_devices+0x20/0x20 [ 76.732532][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 76.738622][ T12] ? lockdep_hardirqs_on+0x382/0x580 [ 76.743926][ T12] __device_attach+0x217/0x390 [ 76.748719][ T12] ? device_bind_driver+0xd0/0xd0 [ 76.755176][ T12] bus_probe_device+0x1e4/0x290 [ 76.760466][ T12] device_add+0x1459/0x1bf0 [ 76.765190][ T12] ? wait_for_completion+0x3c0/0x3c0 [ 76.770493][ T12] ? device_link_remove+0x110/0x110 [ 76.775702][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 76.781597][ T12] usb_set_configuration+0xe47/0x17d0 [ 76.786994][ T12] usb_generic_driver_probe+0x9d/0xe0 [ 76.792417][ T12] usb_probe_device+0xd9/0x230 [ 76.797208][ T12] ? usb_suspend+0x5f0/0x5f0 [ 76.801803][ T12] really_probe+0x290/0xac0 executing program executing program [ 76.806313][ T12] driver_probe_device+0x223/0x350 [ 76.811430][ T12] __device_attach_driver+0x1d1/0x290 [ 76.816833][ T12] ? driver_allows_async_probing+0x160/0x160 [ 76.823495][ T12] bus_for_each_drv+0x162/0x1e0 [ 76.830267][ T12] ? bus_rescan_devices+0x20/0x20 [ 76.836069][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 76.841951][ T12] ? lockdep_hardirqs_on+0x382/0x580 [ 76.847272][ T12] __device_attach+0x217/0x390 [ 76.852063][ T12] ? device_bind_driver+0xd0/0xd0 [ 76.857411][ T12] bus_probe_device+0x1e4/0x290 [ 76.862269][ T12] device_add+0x1459/0x1bf0 [ 76.866880][ T12] ? device_link_remove+0x110/0x110 [ 76.872142][ T12] usb_new_device.cold+0x540/0xcd0 [ 76.877584][ T12] hub_event+0x21cb/0x4300 [ 76.882293][ T12] ? hub_port_debounce+0x350/0x350 [ 76.888016][ T12] ? find_held_lock+0x2d/0x110 [ 76.892784][ T12] ? mark_held_locks+0xe0/0xe0 [ 76.897823][ T12] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 76.903384][ T12] ? rcu_read_lock_bh_held+0xb0/0xb0 executing program [ 76.908764][ T12] process_one_work+0x94b/0x1620 [ 76.913806][ T12] ? pwq_dec_nr_in_flight+0x310/0x310 [ 76.919236][ T12] ? do_raw_spin_lock+0x129/0x290 [ 76.924651][ T12] worker_thread+0x96/0xe20 [ 76.929322][ T12] ? process_one_work+0x1620/0x1620 [ 76.934591][ T12] kthread+0x318/0x420 [ 76.938685][ T12] ? kthread_create_on_node+0xf0/0xf0 [ 76.944793][ T12] ret_from_fork+0x24/0x30 [ 76.950891][ T94] sysfs: cannot create duplicate filename '/class/tty/ttyHS0' [ 76.959288][ T94] CPU: 0 PID: 94 Comm: kworker/0:2 Not tainted 5.6.0-rc3-syzkaller #0 [ 76.967446][ T94] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.979369][ T94] Workqueue: usb_hub_wq hub_event [ 76.984784][ T94] Call Trace: [ 76.988176][ T94] dump_stack+0xef/0x16e [ 76.992552][ T94] sysfs_warn_dup.cold+0x1c/0x2d [ 76.997917][ T94] sysfs_do_create_link_sd.isra.0+0x119/0x130 [ 77.004103][ T94] sysfs_create_link+0x61/0xc0 [ 77.009091][ T94] device_add+0x756/0x1bf0 [ 77.013589][ T94] ? lockdep_init_map+0x1b0/0x5e0 [ 77.018668][ T94] ? device_link_remove+0x110/0x110 [ 77.024092][ T94] ? __init_waitqueue_head+0x31/0x90 [ 77.029502][ T94] tty_register_device_attr+0x341/0x6f0 [ 77.035163][ T94] ? hung_up_tty_compat_ioctl+0x40/0x40 [ 77.040865][ T94] ? mark_held_locks+0x9f/0xe0 [ 77.045825][ T94] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 77.051689][ T94] ? tty_port_register_device_attr+0xb9/0x110 [ 77.057762][ T94] hso_serial_common_create+0x113/0x710 [ 77.063415][ T94] ? kasan_unpoison_shadow+0x30/0x40 [ 77.069325][ T94] hso_probe+0xc93/0x1b7b [ 77.073667][ T94] usb_probe_interface+0x310/0x800 [ 77.078915][ T94] ? usb_probe_device+0x230/0x230 [ 77.084118][ T94] really_probe+0x290/0xac0 [ 77.088666][ T94] driver_probe_device+0x223/0x350 [ 77.093804][ T94] __device_attach_driver+0x1d1/0x290 [ 77.099785][ T94] ? driver_allows_async_probing+0x160/0x160 [ 77.106292][ T94] bus_for_each_drv+0x162/0x1e0 executing program [ 77.112092][ T94] ? bus_rescan_devices+0x20/0x20 [ 77.117245][ T94] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 77.123225][ T94] ? lockdep_hardirqs_on+0x382/0x580 [ 77.128729][ T94] __device_attach+0x217/0x390 [ 77.133544][ T94] ? device_bind_driver+0xd0/0xd0 [ 77.138601][ T94] bus_probe_device+0x1e4/0x290 [ 77.143952][ T94] device_add+0x1459/0x1bf0 [ 77.148483][ T94] ? wait_for_completion+0x3c0/0x3c0 [ 77.153865][ T94] ? device_link_remove+0x110/0x110 executing program executing program [ 77.159191][ T94] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 77.165025][ T94] usb_set_configuration+0xe47/0x17d0 [ 77.170435][ T94] usb_generic_driver_probe+0x9d/0xe0 [ 77.175830][ T94] usb_probe_device+0xd9/0x230 [ 77.181031][ T94] ? usb_suspend+0x5f0/0x5f0 [ 77.185752][ T94] really_probe+0x290/0xac0 [ 77.190326][ T94] driver_probe_device+0x223/0x350 [ 77.195461][ T94] __device_attach_driver+0x1d1/0x290 [ 77.201236][ T94] ? driver_allows_async_probing+0x160/0x160 [ 77.207212][ T94] bus_for_each_drv+0x162/0x1e0 [ 77.213500][ T94] ? bus_rescan_devices+0x20/0x20 [ 77.218556][ T94] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 77.224400][ T94] ? lockdep_hardirqs_on+0x382/0x580 [ 77.229720][ T94] __device_attach+0x217/0x390 [ 77.234633][ T94] ? device_bind_driver+0xd0/0xd0 [ 77.239709][ T94] bus_probe_device+0x1e4/0x290 [ 77.244672][ T94] device_add+0x1459/0x1bf0 [ 77.249281][ T94] ? device_link_remove+0x110/0x110 [ 77.254507][ T94] usb_new_device.cold+0x540/0xcd0 [ 77.259709][ T94] hub_event+0x21cb/0x4300 [ 77.264484][ T94] ? hub_port_debounce+0x350/0x350 [ 77.269679][ T94] ? find_held_lock+0x2d/0x110 [ 77.274664][ T94] ? mark_held_locks+0xe0/0xe0 [ 77.279778][ T94] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 77.285368][ T94] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 77.290668][ T94] process_one_work+0x94b/0x1620 [ 77.295600][ T94] ? pwq_dec_nr_in_flight+0x310/0x310 [ 77.301050][ T94] ? do_raw_spin_lock+0x129/0x290 [ 77.306599][ T94] worker_thread+0x96/0xe20 [ 77.311131][ T94] ? process_one_work+0x1620/0x1620 [ 77.316344][ T94] kthread+0x318/0x420 [ 77.320433][ T94] ? kthread_create_on_node+0xf0/0xf0 [ 77.325908][ T94] ret_from_fork+0x24/0x30 [ 77.331896][ T1809] sysfs: cannot create duplicate filename '/class/tty/ttyHS0' [ 77.339459][ T1809] CPU: 0 PID: 1809 Comm: kworker/0:4 Not tainted 5.6.0-rc3-syzkaller #0 [ 77.347792][ T1809] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.357893][ T1809] Workqueue: usb_hub_wq hub_event [ 77.362920][ T1809] Call Trace: [ 77.366254][ T1809] dump_stack+0xef/0x16e [ 77.370580][ T1809] sysfs_warn_dup.cold+0x1c/0x2d [ 77.375630][ T1809] sysfs_do_create_link_sd.isra.0+0x119/0x130 [ 77.381712][ T1809] sysfs_create_link+0x61/0xc0 [ 77.386501][ T1809] device_add+0x756/0x1bf0 [ 77.391037][ T1809] ? lockdep_init_map+0x1b0/0x5e0 [ 77.396429][ T1809] ? device_link_remove+0x110/0x110 [ 77.401637][ T1809] ? __init_waitqueue_head+0x31/0x90 [ 77.406952][ T1809] tty_register_device_attr+0x341/0x6f0 [ 77.412536][ T1809] ? hung_up_tty_compat_ioctl+0x40/0x40 [ 77.418084][ T1809] ? mark_held_locks+0x9f/0xe0 [ 77.422870][ T1809] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 77.428978][ T1809] ? tty_port_register_device_attr+0xb9/0x110 [ 77.435082][ T1809] hso_serial_common_create+0x113/0x710 [ 77.440869][ T1809] ? kasan_unpoison_shadow+0x30/0x40 [ 77.446200][ T1809] hso_probe+0xc93/0x1b7b [ 77.450557][ T1809] usb_probe_interface+0x310/0x800 [ 77.456332][ T1809] ? usb_probe_device+0x230/0x230 [ 77.461412][ T1809] really_probe+0x290/0xac0 [ 77.465992][ T1809] driver_probe_device+0x223/0x350 [ 77.471220][ T1809] __device_attach_driver+0x1d1/0x290 [ 77.476620][ T1809] ? driver_allows_async_probing+0x160/0x160 [ 77.482694][ T1809] bus_for_each_drv+0x162/0x1e0 [ 77.487562][ T1809] ? bus_rescan_devices+0x20/0x20 [ 77.492615][ T1809] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 77.498455][ T1809] ? lockdep_hardirqs_on+0x382/0x580 [ 77.503751][ T1809] __device_attach+0x217/0x390 [ 77.508531][ T1809] ? device_bind_driver+0xd0/0xd0 [ 77.513741][ T1809] bus_probe_device+0x1e4/0x290 [ 77.518614][ T1809] device_add+0x1459/0x1bf0 [ 77.523311][ T1809] ? wait_for_completion+0x3c0/0x3c0 [ 77.528788][ T1809] ? device_link_remove+0x110/0x110 [ 77.533989][ T1809] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 77.539898][ T1809] usb_set_configuration+0xe47/0x17d0 [ 77.545516][ T1809] usb_generic_driver_probe+0x9d/0xe0 [ 77.550911][ T1809] usb_probe_device+0xd9/0x230 [ 77.555700][ T1809] ? usb_suspend+0x5f0/0x5f0 [ 77.560306][ T1809] really_probe+0x290/0xac0 [ 77.564927][ T1809] driver_probe_device+0x223/0x350 [ 77.571442][ T1809] __device_attach_driver+0x1d1/0x290 [ 77.576822][ T1809] ? driver_allows_async_probing+0x160/0x160 [ 77.582812][ T1809] bus_for_each_drv+0x162/0x1e0 [ 77.587684][ T1809] ? bus_rescan_devices+0x20/0x20 [ 77.592735][ T1809] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 77.598659][ T1809] ? lockdep_hardirqs_on+0x382/0x580 [ 77.604141][ T1809] __device_attach+0x217/0x390 [ 77.608905][ T1809] ? device_bind_driver+0xd0/0xd0 [ 77.613970][ T1809] bus_probe_device+0x1e4/0x290 [ 77.618934][ T1809] device_add+0x1459/0x1bf0 [ 77.623475][ T1809] ? device_link_remove+0x110/0x110 [ 77.628870][ T1809] usb_new_device.cold+0x540/0xcd0 [ 77.634038][ T1809] hub_event+0x21cb/0x4300 [ 77.638498][ T1809] ? hub_port_debounce+0x350/0x350 [ 77.643634][ T1809] ? find_held_lock+0x2d/0x110 [ 77.648413][ T1809] ? mark_held_locks+0xe0/0xe0 [ 77.653179][ T1809] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 77.658773][ T1809] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 77.664274][ T1809] process_one_work+0x94b/0x1620 [ 77.669264][ T1809] ? __wake_up_common+0x650/0x650 [ 77.674332][ T1809] ? pwq_dec_nr_in_flight+0x310/0x310 [ 77.679831][ T1809] worker_thread+0x96/0xe20 [ 77.684458][ T1809] ? process_one_work+0x1620/0x1620 [ 77.692965][ T1809] kthread+0x318/0x420 [ 77.697144][ T1809] ? kthread_create_on_node+0xf0/0xf0 [ 77.702521][ T1809] ret_from_fork+0x24/0x30 [ 77.707490][ T1807] sysfs: cannot create duplicate filename '/class/tty/ttyHS0' [ 77.715068][ T1807] CPU: 0 PID: 1807 Comm: kworker/0:3 Not tainted 5.6.0-rc3-syzkaller #0 [ 77.723429][ T1807] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.733483][ T1807] Workqueue: usb_hub_wq hub_event [ 77.738537][ T1807] Call Trace: [ 77.741821][ T1807] dump_stack+0xef/0x16e [ 77.746165][ T1807] sysfs_warn_dup.cold+0x1c/0x2d [ 77.751135][ T1807] sysfs_do_create_link_sd.isra.0+0x119/0x130 [ 77.757253][ T1807] sysfs_create_link+0x61/0xc0 [ 77.762082][ T1807] device_add+0x756/0x1bf0 [ 77.766990][ T1807] ? lockdep_init_map+0x1b0/0x5e0 [ 77.772030][ T1807] ? device_link_remove+0x110/0x110 [ 77.777222][ T1807] ? __init_waitqueue_head+0x31/0x90 [ 77.782520][ T1807] tty_register_device_attr+0x341/0x6f0 [ 77.788115][ T1807] ? hung_up_tty_compat_ioctl+0x40/0x40 [ 77.793689][ T1807] ? mark_held_locks+0x9f/0xe0 [ 77.798462][ T1807] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 77.804393][ T1807] ? tty_port_register_device_attr+0xb9/0x110 [ 77.810475][ T1807] hso_serial_common_create+0x113/0x710 [ 77.816050][ T1807] ? kasan_unpoison_shadow+0x30/0x40 [ 77.821346][ T1807] hso_probe+0xc93/0x1b7b [ 77.825732][ T1807] usb_probe_interface+0x310/0x800 [ 77.830866][ T1807] ? usb_probe_device+0x230/0x230 [ 77.835905][ T1807] really_probe+0x290/0xac0 [ 77.840467][ T1807] driver_probe_device+0x223/0x350 [ 77.845589][ T1807] __device_attach_driver+0x1d1/0x290 [ 77.851174][ T1807] ? driver_allows_async_probing+0x160/0x160 [ 77.857379][ T1807] bus_for_each_drv+0x162/0x1e0 [ 77.862244][ T1807] ? bus_rescan_devices+0x20/0x20 [ 77.867337][ T1807] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 77.873168][ T1807] ? lockdep_hardirqs_on+0x382/0x580 [ 77.878521][ T1807] __device_attach+0x217/0x390 [ 77.883302][ T1807] ? device_bind_driver+0xd0/0xd0 [ 77.888330][ T1807] bus_probe_device+0x1e4/0x290 [ 77.893199][ T1807] device_add+0x1459/0x1bf0 [ 77.897721][ T1807] ? wait_for_completion+0x3c0/0x3c0 [ 77.903067][ T1807] ? device_link_remove+0x110/0x110 [ 77.908552][ T1807] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 77.914384][ T1807] usb_set_configuration+0xe47/0x17d0 [ 77.919770][ T1807] usb_generic_driver_probe+0x9d/0xe0 [ 77.925380][ T1807] usb_probe_device+0xd9/0x230 [ 77.931528][ T1807] ? usb_suspend+0x5f0/0x5f0 [ 77.936153][ T1807] really_probe+0x290/0xac0 [ 77.940731][ T1807] driver_probe_device+0x223/0x350 [ 77.945858][ T1807] __device_attach_driver+0x1d1/0x290 [ 77.951257][ T1807] ? driver_allows_async_probing+0x160/0x160 [ 77.957257][ T1807] bus_for_each_drv+0x162/0x1e0 [ 77.962332][ T1807] ? bus_rescan_devices+0x20/0x20 [ 77.967373][ T1807] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 77.973185][ T1807] ? lockdep_hardirqs_on+0x382/0x580 [ 77.978827][ T1807] __device_attach+0x217/0x390 [ 77.983614][ T1807] ? device_bind_driver+0xd0/0xd0 [ 77.988656][ T1807] bus_probe_device+0x1e4/0x290 [ 77.994078][ T1807] device_add+0x1459/0x1bf0 [ 77.998613][ T1807] ? device_link_remove+0x110/0x110 [ 78.003926][ T1807] usb_new_device.cold+0x540/0xcd0 [ 78.009150][ T1807] hub_event+0x21cb/0x4300 [ 78.013577][ T1807] ? hub_port_debounce+0x350/0x350 [ 78.018683][ T1807] ? find_held_lock+0x2d/0x110 [ 78.023765][ T1807] ? mark_held_locks+0xe0/0xe0 [ 78.028549][ T1807] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 78.034129][ T1807] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 78.039432][ T1807] process_one_work+0x94b/0x1620 [ 78.044384][ T1807] ? __wake_up_common+0x650/0x650 [ 78.049406][ T1807] ? pwq_dec_nr_in_flight+0x310/0x310 [ 78.054781][ T1807] worker_thread+0x96/0xe20 [ 78.059411][ T1807] ? process_one_work+0x1620/0x1620 [ 78.064623][ T1807] kthread+0x318/0x420 [ 78.068691][ T1807] ? kthread_create_on_node+0xf0/0xf0 [ 78.074259][ T1807] ret_from_fork+0x24/0x30 [ 78.080053][ T5] hso 3-1:0.0: Failed to find BULK IN ep [ 78.089089][ T5] usb 3-1: USB disconnect, device number 2 [ 78.098189][ T1807] hso 2-1:0.0: Failed to find BULK IN ep [ 78.104024][ T1807] general protection fault, probably for non-canonical address 0xdffffc000000000c: 0000 [#1] SMP KASAN [ 78.117252][ T1807] KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067] [ 78.125868][ T1807] CPU: 0 PID: 1807 Comm: kworker/0:3 Not tainted 5.6.0-rc3-syzkaller #0 [ 78.134223][ T1807] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.144895][ T1807] Workqueue: usb_hub_wq hub_event [ 78.149916][ T1807] RIP: 0010:cdev_del+0x22/0x90 [ 78.154670][ T1807] Code: cf 0f 1f 80 00 00 00 00 55 48 89 fd 48 83 ec 08 e8 33 a5 d2 ff 48 8d 7d 64 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 4f 48 [ 78.174358][ T1807] RSP: 0018:ffff8881cda67248 EFLAGS: 00010207 [ 78.180452][ T1807] RAX: dffffc0000000000 RBX: ffff8881d56dd900 RCX: ffffffff82167c6e [ 78.188445][ T1807] RDX: 000000000000000c RSI: ffffffff816cb7bd RDI: 0000000000000064 [ 78.196418][ T1807] RBP: 0000000000000000 R08: ffff8881cdbf1880 R09: fffffbfff1266c8e [ 78.204397][ T1807] R10: fffffbfff1266c8d R11: ffffffff8933646f R12: 0000000000000000 [ 78.212376][ T1807] R13: ffff8881d51b5000 R14: ffff8881cd017000 R15: ffff8881cd56e070 [ 78.220361][ T1807] FS: 0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 [ 78.229757][ T1807] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.236745][ T1807] CR2: 00000000004c43c8 CR3: 0000000007021000 CR4: 00000000001406f0 [ 78.244952][ T1807] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 78.252966][ T1807] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 78.261104][ T1807] Call Trace: [ 78.264430][ T1807] tty_unregister_device+0x10d/0x1a0 [ 78.269716][ T1807] hso_probe.cold+0x6e/0x14c [ 78.274336][ T1807] usb_probe_interface+0x310/0x800 [ 78.279462][ T1807] ? usb_probe_device+0x230/0x230 [ 78.284505][ T1807] really_probe+0x290/0xac0 [ 78.289033][ T1807] driver_probe_device+0x223/0x350 [ 78.294142][ T1807] __device_attach_driver+0x1d1/0x290 [ 78.299532][ T1807] ? driver_allows_async_probing+0x160/0x160 [ 78.305555][ T1807] bus_for_each_drv+0x162/0x1e0 [ 78.310457][ T1807] ? bus_rescan_devices+0x20/0x20 [ 78.315479][ T1807] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 78.323071][ T1807] ? lockdep_hardirqs_on+0x382/0x580 [ 78.328371][ T1807] __device_attach+0x217/0x390 [ 78.333141][ T1807] ? device_bind_driver+0xd0/0xd0 [ 78.338168][ T1807] bus_probe_device+0x1e4/0x290 [ 78.343034][ T1807] device_add+0x1459/0x1bf0 [ 78.347554][ T1807] ? wait_for_completion+0x3c0/0x3c0 [ 78.352885][ T1807] ? device_link_remove+0x110/0x110 [ 78.358236][ T1807] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 78.364055][ T1807] usb_set_configuration+0xe47/0x17d0 [ 78.369519][ T1807] usb_generic_driver_probe+0x9d/0xe0 [ 78.375076][ T1807] usb_probe_device+0xd9/0x230 [ 78.381260][ T1807] ? usb_suspend+0x5f0/0x5f0 [ 78.385881][ T1807] really_probe+0x290/0xac0 [ 78.390517][ T1807] driver_probe_device+0x223/0x350 [ 78.395662][ T1807] __device_attach_driver+0x1d1/0x290 [ 78.401142][ T1807] ? driver_allows_async_probing+0x160/0x160 [ 78.407185][ T1807] bus_for_each_drv+0x162/0x1e0 [ 78.412084][ T1807] ? bus_rescan_devices+0x20/0x20 [ 78.417190][ T1807] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 78.422992][ T1807] ? lockdep_hardirqs_on+0x382/0x580 [ 78.428273][ T1807] __device_attach+0x217/0x390 [ 78.433033][ T1807] ? device_bind_driver+0xd0/0xd0 [ 78.438062][ T1807] bus_probe_device+0x1e4/0x290 [ 78.442933][ T1807] device_add+0x1459/0x1bf0 [ 78.447432][ T1807] ? device_link_remove+0x110/0x110 [ 78.452626][ T1807] usb_new_device.cold+0x540/0xcd0 [ 78.457813][ T1807] hub_event+0x21cb/0x4300 [ 78.462268][ T1807] ? hub_port_debounce+0x350/0x350 [ 78.467390][ T1807] ? find_held_lock+0x2d/0x110 [ 78.472153][ T1807] ? mark_held_locks+0xe0/0xe0 [ 78.476931][ T1807] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 78.482506][ T1807] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 78.487788][ T1807] process_one_work+0x94b/0x1620 [ 78.492733][ T1807] ? __wake_up_common+0x650/0x650 [ 78.497891][ T1807] ? pwq_dec_nr_in_flight+0x310/0x310 [ 78.503276][ T1807] worker_thread+0x96/0xe20 [ 78.507788][ T1807] ? process_one_work+0x1620/0x1620 [ 78.512987][ T1807] kthread+0x318/0x420 [ 78.517088][ T1807] ? kthread_create_on_node+0xf0/0xf0 [ 78.522490][ T1807] ret_from_fork+0x24/0x30 [ 78.527010][ T1807] Modules linked in: [ 78.530986][ T1807] ---[ end trace 8fe451ce741bb569 ]--- [ 78.536553][ T1807] RIP: 0010:cdev_del+0x22/0x90 [ 78.541387][ T1807] Code: cf 0f 1f 80 00 00 00 00 55 48 89 fd 48 83 ec 08 e8 33 a5 d2 ff 48 8d 7d 64 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 4f 48 [ 78.561044][ T1807] RSP: 0018:ffff8881cda67248 EFLAGS: 00010207 [ 78.567110][ T1807] RAX: dffffc0000000000 RBX: ffff8881d56dd900 RCX: ffffffff82167c6e [ 78.575129][ T1807] RDX: 000000000000000c RSI: ffffffff816cb7bd RDI: 0000000000000064 [ 78.583154][ T1807] RBP: 0000000000000000 R08: ffff8881cdbf1880 R09: fffffbfff1266c8e [ 78.591193][ T1807] R10: fffffbfff1266c8d R11: ffffffff8933646f R12: 0000000000000000 [ 78.599211][ T1807] R13: ffff8881d51b5000 R14: ffff8881cd017000 R15: ffff8881cd56e070 [ 78.607195][ T1807] FS: 0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 [ 78.616411][ T1807] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.623060][ T1807] CR2: 00000000004c43c8 CR3: 0000000007021000 CR4: 00000000001406f0 [ 78.631316][ T1807] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 78.639448][ T1807] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 78.647432][ T1807] Kernel panic - not syncing: Fatal exception [ 78.654197][ T1807] Kernel Offset: disabled [ 78.658563][ T1807] Rebooting in 86400 seconds..