[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[1[ 14.052865][ T1738] random: sshd: uninitialized urandom read (32 bytes read) G[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 18.390316][ T1780] random: sshd: uninitialized urandom read (32 bytes read) [ 18.406700][ C1] random: crng init done Warning: Permanently added '10.128.0.251' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program [ 37.171116][ T95] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 37.191125][ T94] usb 6-1: new high-speed USB device number 2 using dummy_hcd [ 37.198731][ T5] usb 2-1: new high-speed USB device number 2 using dummy_hcd [ 37.206551][ T12] usb 3-1: new high-speed USB device number 2 using dummy_hcd [ 37.214085][ T103] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 37.221774][ T1811] usb 4-1: new high-speed USB device number 2 using dummy_hcd [ 37.281270][ T95] usb 1-1: Using ep0 maxpacket: 32 [ 37.311315][ T12] usb 3-1: Using ep0 maxpacket: 32 [ 37.316599][ T94] usb 6-1: Using ep0 maxpacket: 32 [ 37.321872][ T1811] usb 4-1: Using ep0 maxpacket: 32 [ 37.327102][ T103] usb 5-1: Using ep0 maxpacket: 32 [ 37.332297][ T5] usb 2-1: Using ep0 maxpacket: 32 [ 37.401248][ T95] usb 1-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 37.410455][ T95] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 37.420534][ T95] usb 1-1: config 0 descriptor?? [ 37.441218][ T1811] usb 4-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 37.450338][ T1811] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 37.458646][ T12] usb 3-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 37.467757][ T12] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 37.475967][ T5] usb 2-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 37.485070][ T5] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 37.493146][ T103] usb 5-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 37.502236][ T103] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 37.510249][ T94] usb 6-1: New USB device found, idVendor=0af0, idProduct=d257, bcdDevice=4e.87 [ 37.519302][ T94] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 37.528689][ T1811] usb 4-1: config 0 descriptor?? [ 37.535867][ T103] usb 5-1: config 0 descriptor?? [ 37.541612][ T5] usb 2-1: config 0 descriptor?? [ 37.547236][ T94] usb 6-1: config 0 descriptor?? [ 37.553057][ T12] usb 3-1: config 0 descriptor?? [ 37.692249][ T95] hso 1-1:0.0: Failed to find BULK IN ep [ 37.792218][ T1811] sysfs: cannot create duplicate filename '/class/tty/ttyHS0' [ 37.799727][ T1811] CPU: 0 PID: 1811 Comm: kworker/0:4 Not tainted 5.6.0-rc3-syzkaller #0 [ 37.808041][ T1811] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.818087][ T1811] Workqueue: usb_hub_wq hub_event [ 37.823086][ T1811] Call Trace: [ 37.826358][ T1811] dump_stack+0xef/0x16e [ 37.830583][ T1811] sysfs_warn_dup.cold+0x1c/0x2d [ 37.835515][ T1811] sysfs_do_create_link_sd.isra.0+0x119/0x130 [ 37.841585][ T1811] sysfs_create_link+0x61/0xc0 [ 37.846332][ T1811] device_add+0x756/0x1bf0 [ 37.850751][ T1811] ? lockdep_init_map+0x1b0/0x5e0 [ 37.855760][ T1811] ? device_link_remove+0x110/0x110 [ 37.860964][ T1811] ? __init_waitqueue_head+0x31/0x90 [ 37.866230][ T1811] tty_register_device_attr+0x341/0x6f0 [ 37.871779][ T1811] ? hung_up_tty_compat_ioctl+0x40/0x40 [ 37.877335][ T1811] ? mark_held_locks+0x9f/0xe0 [ 37.882109][ T1811] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 37.887907][ T1811] ? tty_port_register_device_attr+0xb9/0x110 [ 37.893960][ T1811] hso_serial_common_create+0x113/0x710 [ 37.899510][ T1811] ? kasan_unpoison_shadow+0x30/0x40 [ 37.904779][ T1811] hso_probe+0xc93/0x1b7b [ 37.909108][ T1811] usb_probe_interface+0x310/0x800 [ 37.914218][ T1811] ? usb_probe_device+0x230/0x230 [ 37.919229][ T1811] really_probe+0x290/0xac0 [ 37.923714][ T1811] driver_probe_device+0x223/0x350 [ 37.928803][ T1811] __device_attach_driver+0x1d1/0x290 [ 37.934159][ T1811] ? driver_allows_async_probing+0x160/0x160 [ 37.940122][ T1811] bus_for_each_drv+0x162/0x1e0 [ 37.944956][ T1811] ? bus_rescan_devices+0x20/0x20 [ 37.949963][ T1811] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 37.955767][ T1811] ? lockdep_hardirqs_on+0x382/0x580 [ 37.961058][ T1811] __device_attach+0x217/0x390 [ 37.965823][ T1811] ? device_bind_driver+0xd0/0xd0 [ 37.970864][ T1811] bus_probe_device+0x1e4/0x290 [ 37.975703][ T1811] device_add+0x1459/0x1bf0 [ 37.980192][ T1811] ? wait_for_completion+0x3c0/0x3c0 [ 37.985462][ T1811] ? device_link_remove+0x110/0x110 [ 37.990640][ T1811] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 37.996447][ T1811] usb_set_configuration+0xe47/0x17d0 [ 38.001815][ T1811] usb_generic_driver_probe+0x9d/0xe0 [ 38.007180][ T1811] usb_probe_device+0xd9/0x230 [ 38.011938][ T1811] ? usb_suspend+0x5f0/0x5f0 [ 38.016520][ T1811] really_probe+0x290/0xac0 [ 38.021015][ T1811] driver_probe_device+0x223/0x350 [ 38.026137][ T1811] __device_attach_driver+0x1d1/0x290 [ 38.031513][ T1811] ? driver_allows_async_probing+0x160/0x160 [ 38.037613][ T1811] bus_for_each_drv+0x162/0x1e0 [ 38.042467][ T1811] ? bus_rescan_devices+0x20/0x20 [ 38.047494][ T1811] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 38.053295][ T1811] ? lockdep_hardirqs_on+0x382/0x580 [ 38.058577][ T1811] __device_attach+0x217/0x390 [ 38.063337][ T1811] ? device_bind_driver+0xd0/0xd0 [ 38.068355][ T1811] bus_probe_device+0x1e4/0x290 [ 38.073202][ T1811] device_add+0x1459/0x1bf0 [ 38.077698][ T1811] ? device_link_remove+0x110/0x110 [ 38.082904][ T1811] usb_new_device.cold+0x540/0xcd0 [ 38.088010][ T1811] hub_event+0x21cb/0x4300 [ 38.092424][ T1811] ? hub_port_debounce+0x350/0x350 [ 38.097527][ T1811] ? find_held_lock+0x2d/0x110 [ 38.102286][ T1811] ? mark_held_locks+0xe0/0xe0 [ 38.107049][ T1811] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 38.112592][ T1811] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 38.117883][ T1811] process_one_work+0x94b/0x1620 [ 38.122822][ T1811] ? __wake_up_common+0x650/0x650 [ 38.127841][ T1811] ? pwq_dec_nr_in_flight+0x310/0x310 [ 38.133207][ T1811] worker_thread+0x96/0xe20 [ 38.137701][ T1811] ? process_one_work+0x1620/0x1620 executing program executing program executing program [ 38.142893][ T1811] kthread+0x318/0x420 [ 38.146958][ T1811] ? _raw_spin_unlock_irq+0x27/0x30 [ 38.152160][ T1811] ? kthread_create_on_node+0xf0/0xf0 [ 38.157529][ T1811] ret_from_fork+0x24/0x30 [ 38.166602][ T5] sysfs: cannot create duplicate filename '/class/tty/ttyHS0' [ 38.174148][ T5] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.6.0-rc3-syzkaller #0 [ 38.182206][ T5] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.192273][ T5] Workqueue: usb_hub_wq hub_event [ 38.197287][ T5] Call Trace: [ 38.200593][ T5] dump_stack+0xef/0x16e [ 38.204860][ T5] sysfs_warn_dup.cold+0x1c/0x2d [ 38.209925][ T5] sysfs_do_create_link_sd.isra.0+0x119/0x130 [ 38.215971][ T5] sysfs_create_link+0x61/0xc0 [ 38.220715][ T5] device_add+0x756/0x1bf0 [ 38.225111][ T5] ? lockdep_init_map+0x1b0/0x5e0 [ 38.230116][ T5] ? device_link_remove+0x110/0x110 [ 38.235308][ T5] ? __init_waitqueue_head+0x31/0x90 [ 38.240610][ T5] tty_register_device_attr+0x341/0x6f0 [ 38.246321][ T5] ? hung_up_tty_compat_ioctl+0x40/0x40 [ 38.251886][ T5] ? mark_held_locks+0x9f/0xe0 [ 38.256645][ T5] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 38.262431][ T5] ? tty_port_register_device_attr+0xb9/0x110 [ 38.268495][ T5] hso_serial_common_create+0x113/0x710 [ 38.274038][ T5] ? kasan_unpoison_shadow+0x30/0x40 [ 38.279316][ T5] hso_probe+0xc93/0x1b7b [ 38.283634][ T5] usb_probe_interface+0x310/0x800 [ 38.288841][ T5] ? usb_probe_device+0x230/0x230 [ 38.293863][ T5] really_probe+0x290/0xac0 [ 38.298355][ T5] driver_probe_device+0x223/0x350 [ 38.303461][ T5] __device_attach_driver+0x1d1/0x290 [ 38.308817][ T5] ? driver_allows_async_probing+0x160/0x160 [ 38.314803][ T5] bus_for_each_drv+0x162/0x1e0 [ 38.319694][ T5] ? bus_rescan_devices+0x20/0x20 [ 38.324704][ T5] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 38.330492][ T5] ? lockdep_hardirqs_on+0x382/0x580 [ 38.335763][ T5] __device_attach+0x217/0x390 executing program executing program executing program [ 38.340510][ T5] ? device_bind_driver+0xd0/0xd0 [ 38.345525][ T5] bus_probe_device+0x1e4/0x290 [ 38.350415][ T5] device_add+0x1459/0x1bf0 [ 38.354899][ T5] ? wait_for_completion+0x3c0/0x3c0 [ 38.360174][ T5] ? device_link_remove+0x110/0x110 [ 38.365392][ T5] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 38.371201][ T5] usb_set_configuration+0xe47/0x17d0 [ 38.376580][ T5] usb_generic_driver_probe+0x9d/0xe0 [ 38.381961][ T5] usb_probe_device+0xd9/0x230 [ 38.386765][ T5] ? usb_suspend+0x5f0/0x5f0 [ 38.391377][ T5] really_probe+0x290/0xac0 [ 38.395885][ T5] driver_probe_device+0x223/0x350 [ 38.400978][ T5] __device_attach_driver+0x1d1/0x290 [ 38.406331][ T5] ? driver_allows_async_probing+0x160/0x160 [ 38.412295][ T5] bus_for_each_drv+0x162/0x1e0 [ 38.417126][ T5] ? bus_rescan_devices+0x20/0x20 [ 38.422130][ T5] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 38.427931][ T5] ? lockdep_hardirqs_on+0x382/0x580 [ 38.433203][ T5] __device_attach+0x217/0x390 [ 38.437969][ T5] ? device_bind_driver+0xd0/0xd0 [ 38.443046][ T5] bus_probe_device+0x1e4/0x290 [ 38.447901][ T5] device_add+0x1459/0x1bf0 [ 38.452386][ T5] ? device_link_remove+0x110/0x110 [ 38.457562][ T5] usb_new_device.cold+0x540/0xcd0 [ 38.462667][ T5] hub_event+0x21cb/0x4300 [ 38.467071][ T5] ? hub_port_debounce+0x350/0x350 [ 38.472182][ T5] ? find_held_lock+0x2d/0x110 [ 38.476947][ T5] ? mark_held_locks+0xe0/0xe0 [ 38.481696][ T5] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 38.487233][ T5] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 38.492547][ T5] process_one_work+0x94b/0x1620 [ 38.497467][ T5] ? __wake_up_common+0x650/0x650 [ 38.502473][ T5] ? pwq_dec_nr_in_flight+0x310/0x310 [ 38.507823][ T5] worker_thread+0x96/0xe20 [ 38.512308][ T5] ? process_one_work+0x1620/0x1620 [ 38.517490][ T5] kthread+0x318/0x420 [ 38.521542][ T5] ? kthread_create_on_node+0xf0/0xf0 [ 38.526896][ T5] ret_from_fork+0x24/0x30 [ 38.531758][ T94] sysfs: cannot create duplicate filename '/class/tty/ttyHS0' [ 38.539310][ T94] CPU: 0 PID: 94 Comm: kworker/0:2 Not tainted 5.6.0-rc3-syzkaller #0 [ 38.547449][ T94] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.557519][ T94] Workqueue: usb_hub_wq hub_event [ 38.562526][ T94] Call Trace: [ 38.565802][ T94] dump_stack+0xef/0x16e [ 38.570052][ T94] sysfs_warn_dup.cold+0x1c/0x2d [ 38.574979][ T94] sysfs_do_create_link_sd.isra.0+0x119/0x130 [ 38.581031][ T94] sysfs_create_link+0x61/0xc0 [ 38.585805][ T94] device_add+0x756/0x1bf0 [ 38.590256][ T94] ? lockdep_init_map+0x1b0/0x5e0 [ 38.595272][ T94] ? device_link_remove+0x110/0x110 [ 38.600490][ T94] ? __init_waitqueue_head+0x31/0x90 [ 38.605801][ T94] tty_register_device_attr+0x341/0x6f0 [ 38.611365][ T94] ? hung_up_tty_compat_ioctl+0x40/0x40 [ 38.616930][ T94] ? mark_held_locks+0x9f/0xe0 [ 38.621693][ T94] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 38.627492][ T94] ? tty_port_register_device_attr+0xb9/0x110 [ 38.633551][ T94] hso_serial_common_create+0x113/0x710 [ 38.639102][ T94] ? kasan_unpoison_shadow+0x30/0x40 [ 38.644419][ T94] hso_probe+0xc93/0x1b7b [ 38.648740][ T94] usb_probe_interface+0x310/0x800 [ 38.653845][ T94] ? usb_probe_device+0x230/0x230 [ 38.658863][ T94] really_probe+0x290/0xac0 [ 38.663438][ T94] driver_probe_device+0x223/0x350 [ 38.668539][ T94] __device_attach_driver+0x1d1/0x290 [ 38.673908][ T94] ? driver_allows_async_probing+0x160/0x160 [ 38.679884][ T94] bus_for_each_drv+0x162/0x1e0 [ 38.684740][ T94] ? bus_rescan_devices+0x20/0x20 [ 38.689762][ T94] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 38.695557][ T94] ? lockdep_hardirqs_on+0x382/0x580 [ 38.700834][ T94] __device_attach+0x217/0x390 [ 38.705582][ T94] ? device_bind_driver+0xd0/0xd0 [ 38.711033][ T94] bus_probe_device+0x1e4/0x290 [ 38.715917][ T94] device_add+0x1459/0x1bf0 [ 38.720601][ T94] ? wait_for_completion+0x3c0/0x3c0 [ 38.725878][ T94] ? device_link_remove+0x110/0x110 [ 38.731069][ T94] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 38.736876][ T94] usb_set_configuration+0xe47/0x17d0 [ 38.742252][ T94] usb_generic_driver_probe+0x9d/0xe0 [ 38.747615][ T94] usb_probe_device+0xd9/0x230 [ 38.752380][ T94] ? usb_suspend+0x5f0/0x5f0 [ 38.756954][ T94] really_probe+0x290/0xac0 [ 38.761439][ T94] driver_probe_device+0x223/0x350 [ 38.766546][ T94] __device_attach_driver+0x1d1/0x290 [ 38.771928][ T94] ? driver_allows_async_probing+0x160/0x160 [ 38.777893][ T94] bus_for_each_drv+0x162/0x1e0 [ 38.782741][ T94] ? bus_rescan_devices+0x20/0x20 [ 38.787759][ T94] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 38.793573][ T94] ? lockdep_hardirqs_on+0x382/0x580 [ 38.798892][ T94] __device_attach+0x217/0x390 [ 38.803665][ T94] ? device_bind_driver+0xd0/0xd0 [ 38.808687][ T94] bus_probe_device+0x1e4/0x290 [ 38.813521][ T94] device_add+0x1459/0x1bf0 [ 38.818081][ T94] ? device_link_remove+0x110/0x110 [ 38.823268][ T94] usb_new_device.cold+0x540/0xcd0 [ 38.828381][ T94] hub_event+0x21cb/0x4300 [ 38.832788][ T94] ? hub_port_debounce+0x350/0x350 [ 38.837884][ T94] ? find_held_lock+0x2d/0x110 [ 38.842646][ T94] ? mark_held_locks+0xe0/0xe0 [ 38.847393][ T94] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 38.852925][ T94] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 38.858194][ T94] process_one_work+0x94b/0x1620 [ 38.863137][ T94] ? pwq_dec_nr_in_flight+0x310/0x310 [ 38.868497][ T94] ? do_raw_spin_lock+0x129/0x290 [ 38.873649][ T94] worker_thread+0x96/0xe20 [ 38.878139][ T94] ? process_one_work+0x1620/0x1620 [ 38.883318][ T94] kthread+0x318/0x420 [ 38.887375][ T94] ? kthread_create_on_node+0xf0/0xf0 [ 38.892729][ T94] ret_from_fork+0x24/0x30 [ 38.897614][ T12] sysfs: cannot create duplicate filename '/class/tty/ttyHS0' [ 38.905107][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.6.0-rc3-syzkaller #0 [ 38.913352][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.923413][ T12] Workqueue: usb_hub_wq hub_event [ 38.928436][ T12] Call Trace: [ 38.931727][ T12] dump_stack+0xef/0x16e [ 38.935973][ T12] sysfs_warn_dup.cold+0x1c/0x2d [ 38.940909][ T12] sysfs_do_create_link_sd.isra.0+0x119/0x130 [ 38.946974][ T12] sysfs_create_link+0x61/0xc0 [ 38.952536][ T12] device_add+0x756/0x1bf0 [ 38.956971][ T12] ? lockdep_init_map+0x1b0/0x5e0 [ 38.962032][ T12] ? device_link_remove+0x110/0x110 [ 38.967234][ T12] ? __init_waitqueue_head+0x31/0x90 [ 38.972514][ T12] tty_register_device_attr+0x341/0x6f0 [ 38.978058][ T12] ? hung_up_tty_compat_ioctl+0x40/0x40 [ 38.983600][ T12] ? mark_held_locks+0x9f/0xe0 [ 38.988355][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 38.994162][ T12] ? tty_port_register_device_attr+0xb9/0x110 [ 39.000216][ T12] hso_serial_common_create+0x113/0x710 [ 39.005777][ T12] ? kasan_unpoison_shadow+0x30/0x40 [ 39.011057][ T12] hso_probe+0xc93/0x1b7b [ 39.015490][ T12] usb_probe_interface+0x310/0x800 [ 39.020603][ T12] ? usb_probe_device+0x230/0x230 [ 39.025662][ T12] really_probe+0x290/0xac0 [ 39.030155][ T12] driver_probe_device+0x223/0x350 [ 39.035249][ T12] __device_attach_driver+0x1d1/0x290 [ 39.040616][ T12] ? driver_allows_async_probing+0x160/0x160 [ 39.046599][ T12] bus_for_each_drv+0x162/0x1e0 [ 39.051449][ T12] ? bus_rescan_devices+0x20/0x20 [ 39.056461][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 39.062261][ T12] ? lockdep_hardirqs_on+0x382/0x580 [ 39.067541][ T12] __device_attach+0x217/0x390 [ 39.072468][ T12] ? device_bind_driver+0xd0/0xd0 [ 39.077489][ T12] bus_probe_device+0x1e4/0x290 [ 39.082413][ T12] device_add+0x1459/0x1bf0 [ 39.086944][ T12] ? wait_for_completion+0x3c0/0x3c0 [ 39.092214][ T12] ? device_link_remove+0x110/0x110 [ 39.097411][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 39.103248][ T12] usb_set_configuration+0xe47/0x17d0 [ 39.108609][ T12] usb_generic_driver_probe+0x9d/0xe0 [ 39.114016][ T12] usb_probe_device+0xd9/0x230 [ 39.118768][ T12] ? usb_suspend+0x5f0/0x5f0 [ 39.123345][ T12] really_probe+0x290/0xac0 [ 39.127832][ T12] driver_probe_device+0x223/0x350 [ 39.132929][ T12] __device_attach_driver+0x1d1/0x290 [ 39.138293][ T12] ? driver_allows_async_probing+0x160/0x160 [ 39.144261][ T12] bus_for_each_drv+0x162/0x1e0 [ 39.149101][ T12] ? bus_rescan_devices+0x20/0x20 [ 39.154107][ T12] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 39.159898][ T12] ? lockdep_hardirqs_on+0x382/0x580 [ 39.165171][ T12] __device_attach+0x217/0x390 [ 39.169918][ T12] ? device_bind_driver+0xd0/0xd0 [ 39.174933][ T12] bus_probe_device+0x1e4/0x290 [ 39.179800][ T12] device_add+0x1459/0x1bf0 [ 39.184331][ T12] ? device_link_remove+0x110/0x110 [ 39.189527][ T12] usb_new_device.cold+0x540/0xcd0 [ 39.194638][ T12] hub_event+0x21cb/0x4300 [ 39.199304][ T12] ? hub_port_debounce+0x350/0x350 [ 39.204398][ T12] ? find_held_lock+0x2d/0x110 [ 39.209145][ T12] ? mark_held_locks+0xe0/0xe0 [ 39.213900][ T12] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 39.219430][ T12] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 39.224734][ T12] process_one_work+0x94b/0x1620 [ 39.229697][ T12] ? pwq_dec_nr_in_flight+0x310/0x310 [ 39.235067][ T12] ? do_raw_spin_lock+0x129/0x290 [ 39.240094][ T12] worker_thread+0x96/0xe20 [ 39.244588][ T12] ? process_one_work+0x1620/0x1620 [ 39.249787][ T12] kthread+0x318/0x420 [ 39.253855][ T12] ? kthread_create_on_node+0xf0/0xf0 [ 39.259213][ T12] ret_from_fork+0x24/0x30 [ 39.264135][ T103] hso 5-1:0.0: Failed to find BULK IN ep [ 39.273117][ T103] usb 5-1: USB disconnect, device number 2 [ 39.281386][ T5] hso 2-1:0.0: Failed to find BULK IN ep [ 39.287142][ T5] general protection fault, probably for non-canonical address 0xdffffc000000000c: 0000 [#1] SMP KASAN [ 39.298150][ T5] KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067] [ 39.306579][ T5] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.6.0-rc3-syzkaller #0 [ 39.314627][ T5] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.324689][ T5] Workqueue: usb_hub_wq hub_event [ 39.329711][ T5] RIP: 0010:cdev_del+0x22/0x90 [ 39.334454][ T5] 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 [ 39.354064][ T5] RSP: 0018:ffff8881da1df248 EFLAGS: 00010207 [ 39.360110][ T5] RAX: dffffc0000000000 RBX: ffff8881d505cf00 RCX: ffffffff82167c6e [ 39.368060][ T5] RDX: 000000000000000c RSI: ffffffff816cb7bd RDI: 0000000000000064 [ 39.376049][ T5] RBP: 0000000000000000 R08: ffff8881da196200 R09: fffffbfff1266c8f [ 39.384001][ T5] R10: fffffbfff1266c8e R11: ffffffff89336477 R12: 0000000000000000 [ 39.391961][ T5] R13: ffff8881d5221000 R14: ffff8881cd510000 R15: ffff8881cd589070 [ 39.399973][ T5] FS: 0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 [ 39.408920][ T5] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.415490][ T5] CR2: 00000000004c4368 CR3: 0000000007021000 CR4: 00000000001406f0 [ 39.423444][ T5] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.431423][ T5] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.439370][ T5] Call Trace: [ 39.442643][ T5] tty_unregister_device+0x10d/0x1a0 [ 39.447913][ T5] hso_probe.cold+0x6e/0x14c [ 39.452488][ T5] usb_probe_interface+0x310/0x800 [ 39.457686][ T5] ? usb_probe_device+0x230/0x230 [ 39.462690][ T5] really_probe+0x290/0xac0 [ 39.467174][ T5] driver_probe_device+0x223/0x350 [ 39.472301][ T5] __device_attach_driver+0x1d1/0x290 [ 39.477677][ T5] ? driver_allows_async_probing+0x160/0x160 [ 39.483644][ T5] bus_for_each_drv+0x162/0x1e0 [ 39.488494][ T5] ? bus_rescan_devices+0x20/0x20 [ 39.493502][ T5] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 39.499288][ T5] ? lockdep_hardirqs_on+0x382/0x580 [ 39.504601][ T5] __device_attach+0x217/0x390 [ 39.509409][ T5] ? device_bind_driver+0xd0/0xd0 [ 39.514585][ T5] bus_probe_device+0x1e4/0x290 [ 39.519414][ T5] device_add+0x1459/0x1bf0 [ 39.523917][ T5] ? wait_for_completion+0x3c0/0x3c0 [ 39.529192][ T5] ? device_link_remove+0x110/0x110 [ 39.534381][ T5] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 39.540168][ T5] usb_set_configuration+0xe47/0x17d0 [ 39.545628][ T5] usb_generic_driver_probe+0x9d/0xe0 [ 39.550981][ T5] usb_probe_device+0xd9/0x230 [ 39.555725][ T5] ? usb_suspend+0x5f0/0x5f0 [ 39.560342][ T5] really_probe+0x290/0xac0 [ 39.564848][ T5] driver_probe_device+0x223/0x350 [ 39.569954][ T5] __device_attach_driver+0x1d1/0x290 [ 39.575317][ T5] ? driver_allows_async_probing+0x160/0x160 [ 39.581281][ T5] bus_for_each_drv+0x162/0x1e0 [ 39.586113][ T5] ? bus_rescan_devices+0x20/0x20 [ 39.591117][ T5] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 39.596910][ T5] ? lockdep_hardirqs_on+0x382/0x580 [ 39.602177][ T5] __device_attach+0x217/0x390 [ 39.606981][ T5] ? device_bind_driver+0xd0/0xd0 [ 39.611988][ T5] bus_probe_device+0x1e4/0x290 [ 39.616821][ T5] device_add+0x1459/0x1bf0 [ 39.621308][ T5] ? device_link_remove+0x110/0x110 [ 39.626501][ T5] usb_new_device.cold+0x540/0xcd0 [ 39.631628][ T5] hub_event+0x21cb/0x4300 [ 39.636059][ T5] ? hub_port_debounce+0x350/0x350 [ 39.641153][ T5] ? find_held_lock+0x2d/0x110 [ 39.645897][ T5] ? mark_held_locks+0xe0/0xe0 [ 39.650644][ T5] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 39.656210][ T5] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 39.661489][ T5] process_one_work+0x94b/0x1620 [ 39.666420][ T5] ? __wake_up_common+0x650/0x650 [ 39.671548][ T5] ? pwq_dec_nr_in_flight+0x310/0x310 [ 39.676897][ T5] worker_thread+0x96/0xe20 [ 39.681431][ T5] ? process_one_work+0x1620/0x1620 [ 39.686640][ T5] kthread+0x318/0x420 [ 39.690701][ T5] ? kthread_create_on_node+0xf0/0xf0 [ 39.696096][ T5] ret_from_fork+0x24/0x30 [ 39.700486][ T5] Modules linked in: [ 39.704471][ T5] ---[ end trace 5140abef0b2b9b80 ]--- [ 39.710365][ T5] RIP: 0010:cdev_del+0x22/0x90 [ 39.715200][ T5] 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 [ 39.734859][ T5] RSP: 0018:ffff8881da1df248 EFLAGS: 00010207 [ 39.740911][ T5] RAX: dffffc0000000000 RBX: ffff8881d505cf00 RCX: ffffffff82167c6e [ 39.748926][ T5] RDX: 000000000000000c RSI: ffffffff816cb7bd RDI: 0000000000000064 [ 39.756952][ T5] RBP: 0000000000000000 R08: ffff8881da196200 R09: fffffbfff1266c8f [ 39.764992][ T5] R10: fffffbfff1266c8e R11: ffffffff89336477 R12: 0000000000000000 [ 39.772997][ T5] R13: ffff8881d5221000 R14: ffff8881cd510000 R15: ffff8881cd589070 [ 39.780971][ T5] FS: 0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 [ 39.790039][ T5] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.796685][ T5] CR2: 00000000004c4368 CR3: 0000000007021000 CR4: 00000000001406f0 [ 39.804693][ T5] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.812945][ T5] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.820959][ T5] Kernel panic - not syncing: Fatal exception [ 39.827098][ T5] Kernel Offset: disabled [ 39.831427][ T5] Rebooting in 86400 seconds..