[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[ 14.754280][ T1664] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. [ 15.071585][ C1] random: crng init done Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.139' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 734.237816][ T100] usb 4-1: new high-speed USB device number 2 using dummy_hcd [ 734.237824][ T22] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 734.247918][ T5] usb 6-1: new high-speed USB device number 2 using dummy_hcd [ 734.261052][ T1733] usb 2-1: new high-speed USB device number 2 using dummy_hcd [ 734.267721][ T1735] usb 3-1: new high-speed USB device number 2 using dummy_hcd [ 734.276077][ T102] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 734.477792][ T100] usb 4-1: Using ep0 maxpacket: 16 [ 734.497706][ T22] usb 1-1: Using ep0 maxpacket: 16 [ 734.507808][ T1735] usb 3-1: Using ep0 maxpacket: 16 [ 734.517751][ T1733] usb 2-1: Using ep0 maxpacket: 16 [ 734.517838][ T102] usb 5-1: Using ep0 maxpacket: 16 [ 734.523224][ T5] usb 6-1: Using ep0 maxpacket: 16 [ 734.608068][ T100] usb 4-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 734.617820][ T22] usb 1-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 734.618109][ T100] usb 4-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 734.628056][ T22] usb 1-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 734.637617][ T100] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 734.646644][ T22] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 734.659940][ T100] usb 4-1: config 0 descriptor?? [ 734.662943][ T1735] usb 3-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 734.677541][ T1735] usb 3-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 734.686609][ T1735] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 734.687935][ T1729] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 734.694688][ T102] usb 5-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 734.702985][ T5] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 734.711857][ T102] usb 5-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 734.721698][ T5] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 734.721711][ T5] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 734.726650][ T5] usb 6-1: config 0 descriptor?? [ 734.730779][ T102] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 734.733332][ T1735] usb 3-1: config 0 descriptor?? [ 734.747957][ T1733] usb 2-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 734.756359][ T22] usb 1-1: config 0 descriptor?? [ 734.760972][ T1733] usb 2-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 734.765977][ T1730] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 734.775649][ T1733] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 734.784309][ T102] usb 5-1: config 0 descriptor?? [ 734.792063][ T1733] usb 2-1: config 0 descriptor?? [ 734.807811][ T1734] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 734.810907][ T1724] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 734.818051][ T1732] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 734.837787][ T1731] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 executing program executing program executing program executing program [ 735.007785][ T100] usb 4-1: string descriptor 0 read error: -71 executing program executing program [ 735.048228][ T5] usb 6-1: string descriptor 0 read error: -71 [ 735.059717][ T100] usb 4-1: USB disconnect, device number 2 [ 735.078552][ T22] usb 1-1: string descriptor 0 read error: -71 [ 735.079349][ T5] usb 6-1: USB disconnect, device number 2 [ 735.086269][ T102] usb 5-1: string descriptor 0 read error: -71 [ 735.090675][ T1733] usb 2-1: string descriptor 0 read error: -71 [ 735.107807][ T1735] usb 3-1: string descriptor 0 read error: -71 [ 735.127841][ T1733] chaoskey 2-1:0.0: Unable to register with hwrng [ 735.128787][ T102] chaoskey 5-1:0.0: Unable to register with hwrng [ 735.141189][ T1735] chaoskey 3-1:0.0: Unable to register with hwrng [ 735.142078][ T1733] usb 2-1: USB disconnect, device number 2 [ 735.147994][ T22] usb 1-1: USB disconnect, device number 2 [ 735.165242][ T1735] usb 3-1: USB disconnect, device number 2 [ 735.178345][ T102] usb 5-1: USB disconnect, device number 2 [ 735.487712][ T100] usb 4-1: new high-speed USB device number 3 using dummy_hcd [ 735.517713][ T1733] usb 2-1: new high-speed USB device number 3 using dummy_hcd [ 735.537724][ T1735] usb 3-1: new high-speed USB device number 3 using dummy_hcd [ 735.545307][ T102] usb 5-1: new high-speed USB device number 3 using dummy_hcd [ 735.727765][ T100] usb 4-1: Using ep0 maxpacket: 16 [ 735.757711][ T1733] usb 2-1: Using ep0 maxpacket: 16 [ 735.787737][ T1735] usb 3-1: Using ep0 maxpacket: 16 [ 735.793037][ T102] usb 5-1: Using ep0 maxpacket: 16 [ 735.847788][ T100] usb 4-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 735.857883][ T100] usb 4-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 735.866911][ T100] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 735.875834][ T100] usb 4-1: config 0 descriptor?? [ 735.880919][ T1733] usb 2-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 735.890793][ T1733] usb 2-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 735.899844][ T1733] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 735.909195][ T1733] usb 2-1: config 0 descriptor?? [ 735.917930][ T1735] usb 3-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 735.927809][ T1747] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 735.927914][ T1740] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 735.935265][ T1735] usb 3-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 735.951801][ T1735] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 735.959979][ T102] usb 5-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 735.970393][ T102] usb 5-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 735.979489][ T102] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 735.988434][ T102] usb 5-1: config 0 descriptor?? [ 735.994270][ T1735] usb 3-1: config 0 descriptor?? [ 736.007780][ T1744] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 736.017779][ T1746] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 executing program executing program [ 736.188453][ T100] usb 4-1: string descriptor 0 read error: -71 [ 736.196735][ T1733] usb 2-1: string descriptor 0 read error: -71 [ 736.219016][ T1733] chaoskey 2-1:0.0: Unable to register with hwrng [ 736.225905][ T100] usb 4-1: USB disconnect, device number 3 executing program executing program [ 736.234702][ T1733] usb 2-1: USB disconnect, device number 3 [ 736.267884][ T102] usb 5-1: string descriptor 0 read error: -71 [ 736.277916][ T1735] usb 3-1: string descriptor 0 read error: -71 [ 736.298975][ T102] usb 5-1: USB disconnect, device number 3 [ 736.318948][ T1735] usb 3-1: USB disconnect, device number 3 [ 736.607739][ T1733] usb 2-1: new high-speed USB device number 4 using dummy_hcd [ 736.847717][ T1733] usb 2-1: Using ep0 maxpacket: 16 [ 736.967788][ T1733] usb 2-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 736.977729][ T1733] usb 2-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 736.986744][ T1733] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 736.995688][ T1733] usb 2-1: config 0 descriptor?? [ 737.017770][ T1756] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 executing program [ 737.278456][ T1733] usb 2-1: string descriptor 0 read error: -71 [ 737.299198][ T1733] usb 2-1: USB disconnect, device number 4 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 883.137773][ T23] INFO: task kworker/0:0:5 blocked for more than 143 seconds. [ 883.145395][ T23] Not tainted 5.4.0-rc6+ #0 [ 883.150464][ T23] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 883.159179][ T23] kworker/0:0 D26016 5 2 0x80004000 [ 883.165633][ T23] Workqueue: usb_hub_wq hub_event [ 883.170750][ T23] Call Trace: [ 883.174099][ T23] ? __schedule+0x898/0x1ca0 [ 883.178742][ T23] ? __sched_text_start+0x8/0x8 [ 883.183631][ T23] ? lockdep_hardirqs_on+0x382/0x580 [ 883.188955][ T23] schedule+0xca/0x250 [ 883.193069][ T23] schedule_timeout+0x682/0xb20 [ 883.197954][ T23] ? find_held_lock+0x2d/0x110 [ 883.202719][ T23] ? usleep_range+0x160/0x160 [ 883.207483][ T23] ? mark_lock+0xbc/0x1160 [ 883.211924][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 883.216946][ T23] ? mark_held_locks+0x9f/0xe0 [ 883.221752][ T23] ? _raw_spin_unlock_irq+0x24/0x30 [ 883.226950][ T23] wait_for_completion+0x26f/0x3c0 [ 883.232090][ T23] ? wait_for_completion_interruptible+0x420/0x420 [ 883.238682][ T23] ? refcount_inc_not_zero_checked+0x12d/0x1e0 [ 883.244826][ T23] ? wake_up_q+0xf0/0xf0 [ 883.249103][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 883.254662][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 883.259973][ T23] kthread_stop+0x10c/0x610 [ 883.264473][ T23] hwrng_unregister+0x190/0x210 [ 883.269403][ T23] chaoskey_disconnect+0x1b2/0x200 [ 883.274566][ T23] usb_unbind_interface+0x1bd/0x8a0 [ 883.279802][ T23] ? usb_autoresume_device+0x60/0x60 [ 883.285159][ T23] device_release_driver_internal+0x42f/0x500 [ 883.291260][ T23] bus_remove_device+0x2dc/0x4a0 [ 883.296194][ T23] device_del+0x420/0xb20 [ 883.300570][ T23] ? __device_link_del+0x2f0/0x2f0 [ 883.305697][ T23] ? usb_remove_ep_devs+0x3e/0x80 [ 883.310759][ T23] ? remove_intf_ep_devs+0x13f/0x1d0 [ 883.316045][ T23] usb_disable_device+0x211/0x690 [ 883.321105][ T23] usb_disconnect+0x284/0x8d0 [ 883.325778][ T23] hub_event+0x16f2/0x3800 [ 883.330220][ T23] ? hub_port_debounce+0x260/0x260 [ 883.335331][ T23] ? find_held_lock+0x2d/0x110 [ 883.340129][ T23] ? mark_held_locks+0xe0/0xe0 [ 883.344895][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 883.350467][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 883.355747][ T23] process_one_work+0x92b/0x1530 [ 883.360719][ T23] ? pwq_dec_nr_in_flight+0x310/0x310 [ 883.366098][ T23] worker_thread+0x7ab/0xe20 [ 883.370715][ T23] ? process_one_work+0x1530/0x1530 [ 883.375910][ T23] kthread+0x318/0x420 [ 883.380012][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 883.385476][ T23] ret_from_fork+0x24/0x30 [ 883.390257][ T23] INFO: task kworker/1:1:22 blocked for more than 143 seconds. [ 883.397918][ T23] Not tainted 5.4.0-rc6+ #0 [ 883.402929][ T23] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 883.411623][ T23] kworker/1:1 D26016 22 2 0x80004000 [ 883.418009][ T23] Workqueue: usb_hub_wq hub_event [ 883.423014][ T23] Call Trace: [ 883.426287][ T23] ? __schedule+0x898/0x1ca0 [ 883.430944][ T23] ? __sched_text_start+0x8/0x8 [ 883.435802][ T23] ? lockdep_hardirqs_on+0x382/0x580 [ 883.441176][ T23] schedule+0xca/0x250 [ 883.445255][ T23] schedule_timeout+0x682/0xb20 [ 883.450138][ T23] ? find_held_lock+0x2d/0x110 [ 883.454901][ T23] ? usleep_range+0x160/0x160 [ 883.459614][ T23] ? mark_lock+0xbc/0x1160 [ 883.464029][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 883.469078][ T23] ? mark_held_locks+0x9f/0xe0 [ 883.473856][ T23] ? _raw_spin_unlock_irq+0x24/0x30 [ 883.479104][ T23] wait_for_completion+0x26f/0x3c0 [ 883.484229][ T23] ? wait_for_completion_interruptible+0x420/0x420 [ 883.490778][ T23] ? refcount_inc_not_zero_checked+0x12d/0x1e0 [ 883.496972][ T23] ? wake_up_q+0xf0/0xf0 [ 883.501262][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 883.506810][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 883.512122][ T23] kthread_stop+0x10c/0x610 [ 883.516625][ T23] hwrng_unregister+0x190/0x210 [ 883.521508][ T23] chaoskey_disconnect+0x1b2/0x200 [ 883.526619][ T23] usb_unbind_interface+0x1bd/0x8a0 [ 883.531844][ T23] ? usb_autoresume_device+0x60/0x60 [ 883.537147][ T23] device_release_driver_internal+0x42f/0x500 [ 883.543243][ T23] bus_remove_device+0x2dc/0x4a0 [ 883.548221][ T23] device_del+0x420/0xb20 [ 883.552539][ T23] ? __device_link_del+0x2f0/0x2f0 [ 883.557688][ T23] ? usb_remove_ep_devs+0x3e/0x80 [ 883.562715][ T23] ? remove_intf_ep_devs+0x13f/0x1d0 [ 883.568064][ T23] usb_disable_device+0x211/0x690 [ 883.573086][ T23] usb_disconnect+0x284/0x8d0 [ 883.577790][ T23] hub_event+0x16f2/0x3800 [ 883.582217][ T23] ? hub_port_debounce+0x260/0x260 [ 883.587308][ T23] ? find_held_lock+0x2d/0x110 [ 883.592104][ T23] ? mark_held_locks+0xe0/0xe0 [ 883.596860][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 883.602458][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 883.607791][ T23] process_one_work+0x92b/0x1530 [ 883.612716][ T23] ? pwq_dec_nr_in_flight+0x310/0x310 [ 883.618142][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 883.623165][ T23] worker_thread+0x7ab/0xe20 [ 883.627788][ T23] ? process_one_work+0x1530/0x1530 [ 883.633035][ T23] kthread+0x318/0x420 [ 883.637102][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 883.642519][ T23] ret_from_fork+0x24/0x30 [ 883.647042][ T23] INFO: task kworker/0:2:100 blocked for more than 143 seconds. [ 883.654746][ T23] Not tainted 5.4.0-rc6+ #0 [ 883.659799][ T23] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 883.668515][ T23] kworker/0:2 D25080 100 2 0x80004000 [ 883.674997][ T23] Workqueue: usb_hub_wq hub_event [ 883.680075][ T23] Call Trace: [ 883.683371][ T23] ? __schedule+0x898/0x1ca0 [ 883.687985][ T23] ? __sched_text_start+0x8/0x8 [ 883.692842][ T23] ? lockdep_hardirqs_on+0x382/0x580 [ 883.698189][ T23] schedule+0xca/0x250 [ 883.702275][ T23] schedule_timeout+0x682/0xb20 [ 883.707108][ T23] ? find_held_lock+0x2d/0x110 [ 883.711896][ T23] ? usleep_range+0x160/0x160 [ 883.716572][ T23] ? mark_lock+0xbc/0x1160 [ 883.721028][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 883.726046][ T23] ? mark_held_locks+0x9f/0xe0 [ 883.730856][ T23] ? _raw_spin_unlock_irq+0x24/0x30 [ 883.736067][ T23] wait_for_completion+0x26f/0x3c0 [ 883.741222][ T23] ? wait_for_completion_interruptible+0x420/0x420 [ 883.747763][ T23] ? refcount_inc_not_zero_checked+0x12d/0x1e0 [ 883.753904][ T23] ? wake_up_q+0xf0/0xf0 [ 883.758179][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 883.763721][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 883.769048][ T23] kthread_stop+0x10c/0x610 [ 883.773571][ T23] hwrng_unregister+0x190/0x210 [ 883.778468][ T23] chaoskey_disconnect+0x1b2/0x200 [ 883.783575][ T23] usb_unbind_interface+0x1bd/0x8a0 [ 883.788809][ T23] ? usb_autoresume_device+0x60/0x60 [ 883.794106][ T23] device_release_driver_internal+0x42f/0x500 [ 883.800225][ T23] bus_remove_device+0x2dc/0x4a0 [ 883.805174][ T23] device_del+0x420/0xb20 [ 883.809547][ T23] ? __device_link_del+0x2f0/0x2f0 [ 883.814666][ T23] ? usb_remove_ep_devs+0x3e/0x80 [ 883.819714][ T23] ? remove_intf_ep_devs+0x13f/0x1d0 [ 883.824993][ T23] usb_disable_device+0x211/0x690 [ 883.830045][ T23] usb_disconnect+0x284/0x8d0 [ 883.834733][ T23] hub_event+0x16f2/0x3800 [ 883.839191][ T23] ? hub_port_debounce+0x260/0x260 [ 883.844294][ T23] ? find_held_lock+0x2d/0x110 [ 883.849084][ T23] ? mark_held_locks+0xe0/0xe0 [ 883.853849][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 883.859459][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 883.864740][ T23] process_one_work+0x92b/0x1530 [ 883.869799][ T23] ? pwq_dec_nr_in_flight+0x310/0x310 [ 883.875174][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 883.880238][ T23] worker_thread+0x7ab/0xe20 [ 883.884857][ T23] ? process_one_work+0x1530/0x1530 [ 883.890095][ T23] kthread+0x318/0x420 [ 883.894165][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 883.899584][ T23] ret_from_fork+0x24/0x30 [ 883.904050][ T23] INFO: task kworker/1:2:102 blocked for more than 144 seconds. [ 883.911799][ T23] Not tainted 5.4.0-rc6+ #0 [ 883.916829][ T23] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 883.925610][ T23] kworker/1:2 D25072 102 2 0x80004000 [ 883.931997][ T23] Workqueue: usb_hub_wq hub_event [ 883.937010][ T23] Call Trace: [ 883.940325][ T23] ? __schedule+0x898/0x1ca0 [ 883.944930][ T23] ? __sched_text_start+0x8/0x8 [ 883.949807][ T23] ? lockdep_hardirqs_on+0x382/0x580 [ 883.955099][ T23] schedule+0xca/0x250 [ 883.959210][ T23] schedule_timeout+0x682/0xb20 [ 883.964072][ T23] ? find_held_lock+0x2d/0x110 [ 883.968866][ T23] ? usleep_range+0x160/0x160 [ 883.973541][ T23] ? mark_lock+0xbc/0x1160 [ 883.977984][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 883.983010][ T23] ? mark_held_locks+0x9f/0xe0 [ 883.987806][ T23] ? _raw_spin_unlock_irq+0x24/0x30 [ 883.992996][ T23] wait_for_completion+0x26f/0x3c0 [ 883.998134][ T23] ? wait_for_completion_interruptible+0x420/0x420 [ 884.004631][ T23] ? refcount_inc_not_zero_checked+0x12d/0x1e0 [ 884.010816][ T23] ? wake_up_q+0xf0/0xf0 [ 884.015058][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 884.020630][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 884.027690][ T23] kthread_stop+0x10c/0x610 [ 884.032190][ T23] hwrng_unregister+0x190/0x210 [ 884.037022][ T23] chaoskey_disconnect+0x1b2/0x200 [ 884.042159][ T23] usb_unbind_interface+0x1bd/0x8a0 [ 884.047363][ T23] ? usb_autoresume_device+0x60/0x60 [ 884.052783][ T23] device_release_driver_internal+0x42f/0x500 [ 884.058883][ T23] bus_remove_device+0x2dc/0x4a0 [ 884.063820][ T23] device_del+0x420/0xb20 [ 884.068191][ T23] ? __device_link_del+0x2f0/0x2f0 [ 884.073300][ T23] ? usb_remove_ep_devs+0x3e/0x80 [ 884.078387][ T23] ? remove_intf_ep_devs+0x13f/0x1d0 [ 884.083673][ T23] usb_disable_device+0x211/0x690 [ 884.088732][ T23] usb_disconnect+0x284/0x8d0 [ 884.093403][ T23] hub_event+0x16f2/0x3800 [ 884.097842][ T23] ? hub_port_debounce+0x260/0x260 [ 884.102958][ T23] ? find_held_lock+0x2d/0x110 [ 884.107768][ T23] ? mark_held_locks+0xe0/0xe0 [ 884.112529][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 884.118104][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 884.123386][ T23] process_one_work+0x92b/0x1530 [ 884.128357][ T23] ? pwq_dec_nr_in_flight+0x310/0x310 [ 884.133730][ T23] worker_thread+0x7ab/0xe20 [ 884.138365][ T23] ? process_one_work+0x1530/0x1530 [ 884.143560][ T23] kthread+0x318/0x420 [ 884.147617][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 884.153016][ T23] ret_from_fork+0x24/0x30 [ 884.157488][ T23] INFO: task kworker/0:1:1733 blocked for more than 144 seconds. [ 884.165308][ T23] Not tainted 5.4.0-rc6+ #0 [ 884.170372][ T23] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 884.179086][ T23] kworker/0:1 D24816 1733 2 0x80004000 [ 884.185414][ T23] Workqueue: usb_hub_wq hub_event [ 884.190469][ T23] Call Trace: [ 884.193756][ T23] ? __schedule+0x898/0x1ca0 [ 884.198373][ T23] ? __sched_text_start+0x8/0x8 [ 884.203235][ T23] ? lockdep_hardirqs_on+0x382/0x580 [ 884.208575][ T23] schedule+0xca/0x250 [ 884.212651][ T23] schedule_timeout+0x682/0xb20 [ 884.217488][ T23] ? find_held_lock+0x2d/0x110 [ 884.222283][ T23] ? usleep_range+0x160/0x160 [ 884.226973][ T23] ? mark_lock+0xbc/0x1160 [ 884.231443][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 884.236473][ T23] ? mark_held_locks+0x9f/0xe0 [ 884.241302][ T23] ? _raw_spin_unlock_irq+0x24/0x30 [ 884.246637][ T23] wait_for_completion+0x26f/0x3c0 [ 884.251789][ T23] ? wait_for_completion_interruptible+0x420/0x420 [ 884.258327][ T23] ? refcount_inc_not_zero_checked+0x12d/0x1e0 [ 884.264491][ T23] ? wake_up_q+0xf0/0xf0 [ 884.268792][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 884.274344][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 884.279664][ T23] kthread_stop+0x10c/0x610 [ 884.284167][ T23] hwrng_unregister+0x190/0x210 [ 884.289044][ T23] chaoskey_disconnect+0x1b2/0x200 [ 884.294161][ T23] usb_unbind_interface+0x1bd/0x8a0 [ 884.299395][ T23] ? usb_autoresume_device+0x60/0x60 [ 884.304682][ T23] device_release_driver_internal+0x42f/0x500 [ 884.310777][ T23] bus_remove_device+0x2dc/0x4a0 [ 884.315726][ T23] device_del+0x420/0xb20 [ 884.320078][ T23] ? __device_link_del+0x2f0/0x2f0 [ 884.325198][ T23] ? usb_remove_ep_devs+0x3e/0x80 [ 884.330253][ T23] ? remove_intf_ep_devs+0x13f/0x1d0 [ 884.335541][ T23] usb_disable_device+0x211/0x690 [ 884.340602][ T23] usb_disconnect+0x284/0x8d0 [ 884.345342][ T23] hub_event+0x16f2/0x3800 [ 884.349795][ T23] ? hub_port_debounce+0x260/0x260 [ 884.354909][ T23] ? find_held_lock+0x2d/0x110 [ 884.359755][ T23] ? mark_held_locks+0xe0/0xe0 [ 884.364530][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 884.370113][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 884.375401][ T23] process_one_work+0x92b/0x1530 [ 884.380379][ T23] ? pwq_dec_nr_in_flight+0x310/0x310 [ 884.386415][ T23] worker_thread+0x7ab/0xe20 [ 884.391046][ T23] ? process_one_work+0x1530/0x1530 [ 884.396360][ T23] kthread+0x318/0x420 [ 884.400522][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 884.405894][ T23] ret_from_fork+0x24/0x30 [ 884.410339][ T23] INFO: task kworker/1:0:1735 blocked for more than 144 seconds. [ 884.419463][ T23] Not tainted 5.4.0-rc6+ #0 [ 884.424467][ T23] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 884.433203][ T23] kworker/1:0 D25760 1735 2 0x80004000 [ 884.439592][ T23] Workqueue: usb_hub_wq hub_event [ 884.444608][ T23] Call Trace: [ 884.447950][ T23] ? __schedule+0x898/0x1ca0 [ 884.452543][ T23] ? __sched_text_start+0x8/0x8 [ 884.457384][ T23] ? lockdep_hardirqs_on+0x382/0x580 [ 884.462721][ T23] schedule+0xca/0x250 [ 884.466802][ T23] schedule_timeout+0x682/0xb20 [ 884.471694][ T23] ? find_held_lock+0x2d/0x110 [ 884.476495][ T23] ? usleep_range+0x160/0x160 [ 884.481208][ T23] ? mark_lock+0xbc/0x1160 [ 884.485623][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 884.490680][ T23] ? mark_held_locks+0x9f/0xe0 [ 884.495470][ T23] ? _raw_spin_unlock_irq+0x24/0x30 [ 884.500719][ T23] wait_for_completion+0x26f/0x3c0 [ 884.505839][ T23] ? wait_for_completion_interruptible+0x420/0x420 [ 884.512385][ T23] ? refcount_inc_not_zero_checked+0x12d/0x1e0 [ 884.518576][ T23] ? wake_up_q+0xf0/0xf0 [ 884.522805][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 884.528377][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 884.533685][ T23] kthread_stop+0x10c/0x610 [ 884.538235][ T23] hwrng_unregister+0x190/0x210 [ 884.543085][ T23] chaoskey_disconnect+0x1b2/0x200 [ 884.548221][ T23] usb_unbind_interface+0x1bd/0x8a0 [ 884.553425][ T23] ? usb_autoresume_device+0x60/0x60 [ 884.558752][ T23] device_release_driver_internal+0x42f/0x500 [ 884.564816][ T23] bus_remove_device+0x2dc/0x4a0 [ 884.569786][ T23] device_del+0x420/0xb20 [ 884.574117][ T23] ? __device_link_del+0x2f0/0x2f0 [ 884.579254][ T23] ? usb_remove_ep_devs+0x3e/0x80 [ 884.584275][ T23] ? remove_intf_ep_devs+0x13f/0x1d0 [ 884.589582][ T23] usb_disable_device+0x211/0x690 [ 884.594606][ T23] usb_disconnect+0x284/0x8d0 [ 884.599322][ T23] hub_event+0x16f2/0x3800 [ 884.603758][ T23] ? hub_port_debounce+0x260/0x260 [ 884.608900][ T23] ? find_held_lock+0x2d/0x110 [ 884.613675][ T23] ? mark_held_locks+0xe0/0xe0 [ 884.618473][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 884.624015][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 884.629330][ T23] process_one_work+0x92b/0x1530 [ 884.634266][ T23] ? pwq_dec_nr_in_flight+0x310/0x310 [ 884.639662][ T23] worker_thread+0x7ab/0xe20 [ 884.644246][ T23] ? process_one_work+0x1530/0x1530 [ 884.649478][ T23] kthread+0x318/0x420 [ 884.653551][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 884.658992][ T23] ret_from_fork+0x24/0x30 [ 884.663419][ T23] [ 884.663419][ T23] Showing all locks held in the system: [ 884.671176][ T23] 5 locks held by kworker/0:0/5: [ 884.676109][ T23] #0: ffff8881d8f31128 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 [ 884.686295][ T23] #1: ffff8881da1dfdd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 [ 884.697022][ T23] #2: ffff8881d51ec200 (&dev->mutex){....}, at: hub_event+0x1b2/0x3800 [ 884.705493][ T23] #3: ffff8881d50bd200 (&dev->mutex){....}, at: usb_disconnect+0x91/0x8d0 [ 884.714132][ T23] #4: ffff8881d0d6e190 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 884.724175][ T23] 5 locks held by kworker/1:1/22: [ 884.729230][ T23] #0: ffff8881d8f31128 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 [ 884.741162][ T23] #1: ffff8881d932fdd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 [ 884.751900][ T23] #2: ffff8881d50f9200 (&dev->mutex){....}, at: hub_event+0x1b2/0x3800 [ 884.760273][ T23] #3: ffff8881cf8c4200 (&dev->mutex){....}, at: usb_disconnect+0x91/0x8d0 [ 884.768923][ T23] #4: ffff8881cf8c7190 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 884.778951][ T23] 1 lock held by khungtaskd/23: [ 884.783801][ T23] #0: ffffffff86cfe8a0 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x269 [ 884.793131][ T23] 5 locks held by kworker/0:2/100: [ 884.798264][ T23] #0: ffff8881d8f31128 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 [ 884.808502][ T23] #1: ffff8881d5247dd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 [ 884.819229][ T23] #2: ffff8881d5166200 (&dev->mutex){....}, at: hub_event+0x1b2/0x3800 [ 884.827561][ T23] #3: ffff8881cf17a200 (&dev->mutex){....}, at: usb_disconnect+0x91/0x8d0 [ 884.844136][ T23] #4: ffff8881cf17c190 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 884.854265][ T23] 5 locks held by kworker/1:2/102: [ 884.859417][ T23] #0: ffff8881d8f31128 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 [ 884.871530][ T23] #1: ffff8881d53f7dd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 [ 884.882255][ T23] #2: ffff8881d518d200 (&dev->mutex){....}, at: hub_event+0x1b2/0x3800 [ 884.890627][ T23] #3: ffff8881cf14f200 (&dev->mutex){....}, at: usb_disconnect+0x91/0x8d0 [ 884.899257][ T23] #4: ffff8881cf3c8190 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 884.909292][ T23] 1 lock held by rsyslogd/1599: [ 884.914125][ T23] #0: ffff8881d3150860 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xe3/0x100 [ 884.922873][ T23] 2 locks held by getty/1689: [ 884.927538][ T23] #0: ffff8881d17ec090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 884.936772][ T23] #1: ffffc9000048d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 884.946380][ T23] 2 locks held by getty/1690: [ 884.951687][ T23] #0: ffff8881d1802090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 884.960945][ T23] #1: ffffc900004652e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 884.970535][ T23] 2 locks held by getty/1691: [ 884.975202][ T23] #0: ffff8881d1b64090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 884.984435][ T23] #1: ffffc9000047d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 884.994045][ T23] 2 locks held by getty/1692: [ 884.998760][ T23] #0: ffff8881d1b63090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 885.008019][ T23] #1: ffffc900004792e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 885.017568][ T23] 2 locks held by getty/1693: [ 885.022278][ T23] #0: ffff8881d17ea090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 885.031533][ T23] #1: ffffc900004852e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 885.041136][ T23] 2 locks held by getty/1694: executing program executing program [ 885.045801][ T23] #0: ffff8881d1b62090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 885.055046][ T23] #1: ffffc900004752e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 885.064653][ T23] 2 locks held by getty/1695: [ 885.069364][ T23] #0: ffff8881d23db090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 885.078632][ T23] #1: ffffc9000045d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 885.088241][ T23] 5 locks held by kworker/0:1/1733: [ 885.093436][ T23] #0: ffff8881d8f31128 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 [ 885.103656][ T23] #1: ffff8881cf57fdd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 [ 885.114376][ T23] #2: ffff8881d5138200 (&dev->mutex){....}, at: hub_event+0x1b2/0x3800 [ 885.122738][ T23] #3: ffff8881cef5c200 (&dev->mutex){....}, at: usb_disconnect+0x91/0x8d0 [ 885.131374][ T23] #4: ffff8881cef5d190 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 885.141394][ T23] 5 locks held by kworker/1:0/1735: [ 885.146581][ T23] #0: ffff8881d8f31128 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 [ 885.156766][ T23] #1: ffff8881cf527dd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 [ 885.167485][ T23] #2: ffff8881d513f200 (&dev->mutex){....}, at: hub_event+0x1b2/0x3800 [ 885.175851][ T23] #3: ffff8881cf14e200 (&dev->mutex){....}, at: usb_disconnect+0x91/0x8d0 [ 885.184493][ T23] #4: ffff8881cf3c9190 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 885.194510][ T23] [ 885.196832][ T23] ============================================= [ 885.196832][ T23] [ 885.205277][ T23] NMI backtrace for cpu 1 [ 885.209642][ T23] CPU: 1 PID: 23 Comm: khungtaskd Not tainted 5.4.0-rc6+ #0 [ 885.216929][ T23] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 885.226972][ T23] Call Trace: [ 885.230419][ T23] dump_stack+0xca/0x13e [ 885.234655][ T23] ? x86_vector_activate.cold+0x80/0xdd [ 885.240199][ T23] nmi_cpu_backtrace.cold+0x55/0x96 [ 885.245390][ T23] ? lapic_can_unplug_cpu.cold+0x3b/0x3b [ 885.251019][ T23] nmi_trigger_cpumask_backtrace+0x1b0/0x1c7 [ 885.256991][ T23] watchdog+0x9a4/0xe50 [ 885.261142][ T23] ? reset_hung_task_detector+0x30/0x30 [ 885.266670][ T23] kthread+0x318/0x420 [ 885.270724][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 885.276080][ T23] ret_from_fork+0x24/0x30 [ 885.280536][ T23] Sending NMI from CPU 1 to CPUs 0: [ 885.285807][ C0] NMI backtrace for cpu 0 skipped: idling at default_idle+0x28/0x2e0 [ 885.286743][ T23] Kernel panic - not syncing: hung_task: blocked tasks [ 885.300759][ T23] CPU: 1 PID: 23 Comm: khungtaskd Not tainted 5.4.0-rc6+ #0 [ 885.308033][ T23] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 885.318084][ T23] Call Trace: [ 885.321377][ T23] dump_stack+0xca/0x13e [ 885.325609][ T23] panic+0x2aa/0x6e1 [ 885.329503][ T23] ? add_taint.cold+0x16/0x16 [ 885.334188][ T23] ? cpumask_next+0x1f/0x30 [ 885.338690][ T23] ? printk_safe_flush+0xd9/0x120 [ 885.343714][ T23] ? watchdog+0x9a4/0xe50 [ 885.348030][ T23] ? nmi_trigger_cpumask_backtrace+0x168/0x1c7 [ 885.354172][ T23] watchdog+0x9b5/0xe50 [ 885.358313][ T23] ? reset_hung_task_detector+0x30/0x30 [ 885.363838][ T23] kthread+0x318/0x420 [ 885.367886][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 885.373240][ T23] ret_from_fork+0x24/0x30 [ 885.378316][ T23] Kernel Offset: disabled [ 885.382659][ T23] Rebooting in 86400 seconds..