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 '10.128.1.43' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 706.230647][ T101] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 706.230655][ T22] usb 6-1: new high-speed USB device number 2 using dummy_hcd [ 706.250515][ T1732] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 706.258240][ T1735] usb 4-1: new high-speed USB device number 2 using dummy_hcd [ 706.265828][ T1733] usb 3-1: new high-speed USB device number 2 using dummy_hcd [ 706.273408][ T102] usb 2-1: new high-speed USB device number 2 using dummy_hcd [ 706.480475][ T101] usb 1-1: Using ep0 maxpacket: 16 [ 706.480480][ T22] usb 6-1: Using ep0 maxpacket: 16 [ 706.520974][ T1733] usb 3-1: Using ep0 maxpacket: 16 [ 706.526260][ T1735] usb 4-1: Using ep0 maxpacket: 16 [ 706.531497][ T102] usb 2-1: Using ep0 maxpacket: 16 [ 706.536721][ T1732] usb 5-1: Using ep0 maxpacket: 16 [ 706.600755][ T22] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 706.610857][ T22] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 706.619928][ T22] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 706.620583][ T101] usb 1-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 706.637846][ T101] usb 1-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 706.641935][ T22] usb 6-1: config 0 descriptor?? [ 706.646906][ T101] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 706.662831][ T101] usb 1-1: config 0 descriptor?? [ 706.670719][ T102] usb 2-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 706.680679][ T102] usb 2-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 706.680780][ T1723] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 706.689798][ T102] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 706.697863][ T1728] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 706.705366][ T1733] usb 3-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 706.722536][ T1733] usb 3-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 706.731653][ T1733] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 706.739683][ T1732] usb 5-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 706.749558][ T1732] usb 5-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 706.758620][ T1732] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 706.766694][ T1735] usb 4-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 706.776570][ T1735] usb 4-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 706.785765][ T1735] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 706.796425][ T1735] usb 4-1: config 0 descriptor?? [ 706.801726][ T1732] usb 5-1: config 0 descriptor?? [ 706.807481][ T1733] usb 3-1: config 0 descriptor?? [ 706.813940][ T102] usb 2-1: config 0 descriptor?? [ 706.820741][ T1729] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 706.820867][ T1731] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 706.830620][ T1730] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 706.835575][ T1734] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 executing program executing program [ 706.950588][ T101] usb 1-1: string descriptor 0 read error: -71 [ 706.950689][ T22] usb 6-1: string descriptor 0 read error: -71 [ 706.981192][ T101] chaoskey 1-1:0.0: Unable to register with hwrng [ 706.982917][ T22] usb 6-1: USB disconnect, device number 2 [ 706.988142][ T1744] hwrng: no data available executing program executing program executing program [ 707.005392][ T101] usb 1-1: USB disconnect, device number 2 executing program [ 707.080683][ T1735] usb 4-1: string descriptor 0 read error: -71 [ 707.090666][ T102] usb 2-1: string descriptor 0 read error: -71 [ 707.100709][ T1732] usb 5-1: string descriptor 0 read error: -71 [ 707.110641][ T1733] usb 3-1: string descriptor 0 read error: -71 [ 707.141537][ T1735] usb 4-1: USB disconnect, device number 2 [ 707.147465][ T1732] chaoskey 5-1:0.0: Unable to register with hwrng [ 707.154229][ T102] chaoskey 2-1:0.0: Unable to register with hwrng [ 707.160741][ T1733] chaoskey 3-1:0.0: Unable to register with hwrng [ 707.175746][ T102] usb 2-1: USB disconnect, device number 2 [ 707.182346][ T1732] usb 5-1: USB disconnect, device number 2 [ 707.188799][ T1733] usb 3-1: USB disconnect, device number 2 [ 707.370501][ T101] usb 1-1: new high-speed USB device number 3 using dummy_hcd [ 707.550484][ T102] usb 2-1: new high-speed USB device number 3 using dummy_hcd [ 707.558107][ T1732] usb 5-1: new high-speed USB device number 3 using dummy_hcd [ 707.565636][ T1733] usb 3-1: new high-speed USB device number 3 using dummy_hcd [ 707.610497][ T101] usb 1-1: Using ep0 maxpacket: 16 [ 707.730571][ T101] usb 1-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 707.740532][ T101] usb 1-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 707.749568][ T101] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 707.758614][ T101] usb 1-1: config 0 descriptor?? [ 707.780614][ T1740] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 707.820490][ T102] usb 2-1: Using ep0 maxpacket: 16 [ 707.825735][ T1732] usb 5-1: Using ep0 maxpacket: 16 [ 707.831064][ T1733] usb 3-1: Using ep0 maxpacket: 16 [ 707.950615][ T102] usb 2-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 707.960588][ T102] usb 2-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 707.969603][ T102] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 707.977703][ T1732] usb 5-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 707.987584][ T1732] usb 5-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 executing program [ 707.996658][ T1732] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 708.004761][ T1733] usb 3-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 708.014687][ T1733] usb 3-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 708.023748][ T1733] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 708.030570][ T101] usb 1-1: string descriptor 0 read error: -71 [ 708.033602][ T102] usb 2-1: config 0 descriptor?? [ 708.043175][ T1732] usb 5-1: config 0 descriptor?? [ 708.051863][ T1733] usb 3-1: config 0 descriptor?? [ 708.070593][ T1747] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 708.070598][ T1746] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 708.070742][ T1748] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 708.094413][ T101] usb 1-1: USB disconnect, device number 3 executing program executing program executing program [ 708.340580][ T1733] usb 3-1: string descriptor 0 read error: -71 [ 708.346991][ T1732] usb 5-1: string descriptor 0 read error: -71 [ 708.353516][ T102] usb 2-1: string descriptor 0 read error: -71 [ 708.382754][ T1733] chaoskey 3-1:0.0: Unable to register with hwrng [ 708.389504][ T102] chaoskey 2-1:0.0: Unable to register with hwrng [ 708.399267][ T1732] usb 5-1: USB disconnect, device number 3 [ 708.406390][ T1733] usb 3-1: USB disconnect, device number 3 [ 708.414136][ T102] usb 2-1: USB disconnect, device number 3 [ 708.771009][ T1733] usb 3-1: new high-speed USB device number 4 using dummy_hcd [ 708.778615][ T102] usb 2-1: new high-speed USB device number 4 using dummy_hcd [ 709.010468][ T1733] usb 3-1: Using ep0 maxpacket: 16 [ 709.020486][ T102] usb 2-1: Using ep0 maxpacket: 16 [ 709.130563][ T1733] usb 3-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 709.140746][ T1733] usb 3-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 709.149761][ T1733] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 709.157886][ T102] usb 2-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 709.167774][ T102] usb 2-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 709.176839][ T102] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 709.185726][ T1733] usb 3-1: config 0 descriptor?? [ 709.191954][ T102] usb 2-1: config 0 descriptor?? [ 709.210599][ T1757] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 709.210605][ T1756] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 executing program executing program [ 709.480595][ T1733] usb 3-1: string descriptor 0 read error: -71 [ 709.488519][ T102] usb 2-1: string descriptor 0 read error: -71 [ 709.511728][ T102] chaoskey 2-1:0.0: Unable to register with hwrng [ 709.518583][ T1733] usb 3-1: USB disconnect, device number 4 [ 709.526142][ T102] usb 2-1: USB disconnect, device number 4 [ 709.890880][ T102] usb 2-1: new high-speed USB device number 5 using dummy_hcd [ 710.130484][ T102] usb 2-1: Using ep0 maxpacket: 16 [ 710.250561][ T102] usb 2-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 710.260483][ T102] usb 2-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 710.269495][ T102] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 710.278390][ T102] usb 2-1: config 0 descriptor?? [ 710.300545][ T1761] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 executing program [ 710.560652][ T102] usb 2-1: string descriptor 0 read error: -71 [ 710.584285][ T102] usb 2-1: USB disconnect, device number 5 executing program executing program executing program executing program executing program executing program executing program executing program [ 717.650472][ T22] usb 6-1: new high-speed USB device number 3 using dummy_hcd [ 717.890465][ T22] usb 6-1: Using ep0 maxpacket: 16 executing program [ 718.011201][ T22] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 718.021088][ T22] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 718.030192][ T22] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 718.039565][ T22] usb 6-1: config 0 descriptor?? [ 718.060551][ T1773] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 executing program executing program [ 718.320585][ T22] usb 6-1: string descriptor 0 read error: -71 [ 718.341678][ T22] usb 6-1: USB disconnect, device number 3 [ 718.360839][ T1779] hwrng: no data available executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 729.170482][ T22] usb 6-1: new high-speed USB device number 4 using dummy_hcd executing program [ 729.410480][ T22] usb 6-1: Using ep0 maxpacket: 16 [ 729.560590][ T22] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 729.570964][ T22] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 729.580119][ T22] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 729.589153][ T22] usb 6-1: config 0 descriptor?? [ 729.610601][ T1790] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 executing program [ 729.880641][ T22] usb 6-1: string descriptor 0 read error: -71 [ 729.912320][ T22] usb 6-1: USB disconnect, device number 4 [ 729.930705][ T1795] hwrng: no data available 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 [ 740.690489][ T22] usb 6-1: new high-speed USB device number 5 using dummy_hcd [ 740.930525][ T22] usb 6-1: Using ep0 maxpacket: 16 [ 741.050553][ T22] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 741.060649][ T22] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 741.069663][ T22] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 741.078549][ T22] usb 6-1: config 0 descriptor?? [ 741.100582][ T1807] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 executing program [ 741.360615][ T22] usb 6-1: string descriptor 0 read error: -71 [ 741.382019][ T22] usb 6-1: USB disconnect, device number 5 [ 741.387991][ T1811] hwrng: no data available 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 [ 752.210471][ T22] usb 6-1: new high-speed USB device number 6 using dummy_hcd [ 752.450463][ T22] usb 6-1: Using ep0 maxpacket: 16 [ 752.570567][ T22] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 752.580523][ T22] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 752.589539][ T22] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 752.598784][ T22] usb 6-1: config 0 descriptor?? [ 752.620561][ T1823] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 executing program [ 752.880716][ T22] usb 6-1: string descriptor 0 read error: -71 [ 752.904560][ T22] usb 6-1: USB disconnect, device number 6 [ 752.920529][ T1827] hwrng: no data available 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 [ 763.740482][ T22] usb 6-1: new high-speed USB device number 7 using dummy_hcd [ 763.980491][ T22] usb 6-1: Using ep0 maxpacket: 16 [ 764.100552][ T22] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 764.110480][ T22] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 764.119489][ T22] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 764.128321][ T22] usb 6-1: config 0 descriptor?? [ 764.150551][ T1839] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 executing program executing program [ 764.431052][ T22] usb 6-1: string descriptor 0 read error: -71 [ 764.462077][ T22] usb 6-1: USB disconnect, device number 7 [ 764.480523][ T1845] hwrng: no data available executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 775.250465][ T22] usb 6-1: new high-speed USB device number 8 using dummy_hcd [ 775.490457][ T22] usb 6-1: Using ep0 maxpacket: 16 executing program [ 775.610560][ T22] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 775.620772][ T22] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 775.629777][ T22] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 775.638662][ T22] usb 6-1: config 0 descriptor?? [ 775.660554][ T1856] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 executing program [ 775.920590][ T22] usb 6-1: string descriptor 0 read error: -71 [ 775.941998][ T22] usb 6-1: USB disconnect, device number 8 [ 775.960551][ T1861] hwrng: no data available executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 786.770498][ T22] usb 6-1: new high-speed USB device number 9 using dummy_hcd [ 787.010460][ T22] usb 6-1: Using ep0 maxpacket: 16 executing program [ 787.140552][ T22] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 787.150558][ T22] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 787.159580][ T22] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 787.168821][ T22] usb 6-1: config 0 descriptor?? [ 787.190541][ T1873] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 executing program [ 787.450675][ T22] usb 6-1: string descriptor 0 read error: -71 [ 787.494872][ T22] usb 6-1: USB disconnect, device number 9 [ 787.510698][ T1877] hwrng: no data available 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 [ 798.310480][ T22] usb 6-1: new high-speed USB device number 10 using dummy_hcd [ 798.550523][ T22] usb 6-1: Using ep0 maxpacket: 16 [ 798.670595][ T22] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 798.680514][ T22] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 798.689662][ T22] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 798.698646][ T22] usb 6-1: config 0 descriptor?? [ 798.720572][ T1889] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 executing program [ 798.980725][ T22] usb 6-1: string descriptor 0 read error: -71 [ 799.014941][ T22] usb 6-1: USB disconnect, device number 10 [ 799.030977][ T1894] hwrng: no data available 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 [ 809.810492][ T22] usb 6-1: new high-speed USB device number 11 using dummy_hcd [ 810.050504][ T22] usb 6-1: Using ep0 maxpacket: 16 [ 810.170551][ T22] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 810.180509][ T22] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 810.189532][ T22] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 810.198860][ T22] usb 6-1: config 0 descriptor?? [ 810.220534][ T1906] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 executing program [ 810.480599][ T22] usb 6-1: string descriptor 0 read error: -71 [ 810.504456][ T22] usb 6-1: USB disconnect, device number 11 [ 810.520529][ T1910] hwrng: no data available 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 [ 821.330498][ T22] usb 6-1: new high-speed USB device number 12 using dummy_hcd [ 821.571034][ T22] usb 6-1: Using ep0 maxpacket: 16 [ 821.690549][ T22] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 821.700517][ T22] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 821.709531][ T22] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 821.718505][ T22] usb 6-1: config 0 descriptor?? [ 821.740525][ T1922] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 executing program [ 822.000613][ T22] usb 6-1: string descriptor 0 read error: -71 [ 822.021968][ T22] usb 6-1: USB disconnect, device number 12 [ 822.040556][ T1926] hwrng: no data available 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 [ 832.850468][ T22] usb 6-1: new high-speed USB device number 13 using dummy_hcd executing program [ 833.090482][ T22] usb 6-1: Using ep0 maxpacket: 16 [ 833.210559][ T22] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 833.220494][ T22] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 833.229515][ T22] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 833.238382][ T22] usb 6-1: config 0 descriptor?? [ 833.260548][ T1938] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 executing program executing program [ 833.520626][ T22] usb 6-1: string descriptor 0 read error: -71 [ 833.554981][ T22] usb 6-1: USB disconnect, device number 13 [ 833.570596][ T1944] hwrng: no data available executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 844.370500][ T22] usb 6-1: new high-speed USB device number 14 using dummy_hcd executing program [ 844.621024][ T22] usb 6-1: Using ep0 maxpacket: 16 [ 844.740560][ T22] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 844.750746][ T22] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 844.760231][ T22] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 844.769475][ T22] usb 6-1: config 0 descriptor?? [ 844.790543][ T1956] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 executing program [ 845.070556][ T22] usb 6-1: string descriptor 0 read error: -71 [ 845.092092][ T22] usb 6-1: USB disconnect, device number 14 [ 845.110618][ T1960] hwrng: no data available 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 [ 855.900483][ T22] usb 6-1: new high-speed USB device number 15 using dummy_hcd [ 856.140474][ T22] usb 6-1: Using ep0 maxpacket: 16 [ 856.260538][ T22] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 856.270569][ T22] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 856.279638][ T22] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 856.288560][ T22] usb 6-1: config 0 descriptor?? [ 856.310529][ T1972] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 executing program [ 856.581052][ T22] usb 6-1: string descriptor 0 read error: -71 [ 856.603372][ T22] usb 6-1: USB disconnect, device number 15 [ 856.620535][ T1976] hwrng: no data available executing program executing program executing program executing program executing program executing program executing program executing program [ 863.220520][ T23] INFO: task kworker/0:2:101 blocked for more than 143 seconds. [ 863.228322][ T23] Not tainted 5.4.0-rc6+ #0 [ 863.233407][ T23] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 863.242102][ T23] kworker/0:2 D25552 101 2 0x80004000 [ 863.248608][ T23] Workqueue: usb_hub_wq hub_event [ 863.253701][ T23] Call Trace: [ 863.257048][ T23] ? __schedule+0x898/0x1ca0 [ 863.261663][ T23] ? __sched_text_start+0x8/0x8 [ 863.266578][ T23] ? lockdep_hardirqs_on+0x382/0x580 [ 863.271920][ T23] schedule+0xca/0x250 [ 863.276016][ T23] schedule_timeout+0x682/0xb20 [ 863.280925][ T23] ? find_held_lock+0x2d/0x110 [ 863.285685][ T23] ? usleep_range+0x160/0x160 [ 863.290348][ T23] ? mark_lock+0xbc/0x1160 [ 863.294805][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 863.299822][ T23] ? mark_held_locks+0x9f/0xe0 [ 863.304658][ T23] ? _raw_spin_unlock_irq+0x24/0x30 [ 863.309848][ T23] wait_for_completion+0x26f/0x3c0 executing program [ 863.314992][ T23] ? wait_for_completion_interruptible+0x420/0x420 [ 863.321645][ T23] ? wake_up_q+0xf0/0xf0 [ 863.325926][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 863.331504][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 863.336860][ T23] kthread_stop+0x10c/0x610 [ 863.341477][ T23] hwrng_unregister+0x190/0x210 [ 863.346373][ T23] chaoskey_disconnect+0x1b2/0x200 [ 863.351612][ T23] usb_unbind_interface+0x1bd/0x8a0 [ 863.356814][ T23] ? usb_autoresume_device+0x60/0x60 [ 863.362239][ T23] device_release_driver_internal+0x42f/0x500 [ 863.368307][ T23] bus_remove_device+0x2dc/0x4a0 [ 863.373266][ T23] device_del+0x420/0xb20 [ 863.377657][ T23] ? __device_link_del+0x2f0/0x2f0 [ 863.382806][ T23] ? usb_remove_ep_devs+0x3e/0x80 [ 863.387846][ T23] ? remove_intf_ep_devs+0x13f/0x1d0 [ 863.393154][ T23] usb_disable_device+0x211/0x690 [ 863.398168][ T23] usb_disconnect+0x284/0x8d0 [ 863.402865][ T23] hub_event+0x16f2/0x3800 [ 863.407277][ T23] ? hub_port_debounce+0x260/0x260 [ 863.412408][ T23] ? find_held_lock+0x2d/0x110 [ 863.417189][ T23] ? mark_held_locks+0xe0/0xe0 [ 863.421977][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 863.427513][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 863.432985][ T23] process_one_work+0x92b/0x1530 [ 863.437965][ T23] ? pwq_dec_nr_in_flight+0x310/0x310 [ 863.443356][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 863.448389][ T23] worker_thread+0x7ab/0xe20 [ 863.453090][ T23] ? process_one_work+0x1530/0x1530 [ 863.458281][ T23] kthread+0x318/0x420 [ 863.462393][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 863.467778][ T23] ret_from_fork+0x24/0x30 [ 863.472397][ T23] INFO: task kworker/1:2:102 blocked for more than 143 seconds. [ 863.480118][ T23] Not tainted 5.4.0-rc6+ #0 [ 863.485190][ T23] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 863.493998][ T23] kworker/1:2 D25608 102 2 0x80004000 [ 863.500322][ T23] Workqueue: usb_hub_wq hub_event [ 863.505417][ T23] Call Trace: [ 863.508713][ T23] ? __schedule+0x898/0x1ca0 [ 863.513320][ T23] ? __sched_text_start+0x8/0x8 [ 863.518169][ T23] ? lockdep_hardirqs_on+0x382/0x580 [ 863.523486][ T23] schedule+0xca/0x250 [ 863.527549][ T23] schedule_timeout+0x682/0xb20 [ 863.532447][ T23] ? find_held_lock+0x2d/0x110 [ 863.537211][ T23] ? usleep_range+0x160/0x160 [ 863.541918][ T23] ? mark_lock+0xbc/0x1160 [ 863.546334][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 863.551489][ T23] ? mark_held_locks+0x9f/0xe0 [ 863.556261][ T23] ? _raw_spin_unlock_irq+0x24/0x30 [ 863.561502][ T23] wait_for_completion+0x26f/0x3c0 [ 863.566609][ T23] ? wait_for_completion_interruptible+0x420/0x420 [ 863.573131][ T23] ? wake_up_q+0xf0/0xf0 [ 863.577376][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 863.582951][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 863.588228][ T23] kthread_stop+0x10c/0x610 [ 863.592770][ T23] hwrng_unregister+0x190/0x210 [ 863.597617][ T23] chaoskey_disconnect+0x1b2/0x200 [ 863.602757][ T23] usb_unbind_interface+0x1bd/0x8a0 [ 863.607951][ T23] ? usb_autoresume_device+0x60/0x60 [ 863.613254][ T23] device_release_driver_internal+0x42f/0x500 [ 863.619309][ T23] bus_remove_device+0x2dc/0x4a0 [ 863.624268][ T23] device_del+0x420/0xb20 [ 863.628590][ T23] ? __device_link_del+0x2f0/0x2f0 [ 863.633738][ T23] ? usb_remove_ep_devs+0x3e/0x80 [ 863.638762][ T23] ? remove_intf_ep_devs+0x13f/0x1d0 [ 863.644087][ T23] usb_disable_device+0x211/0x690 [ 863.649125][ T23] usb_disconnect+0x284/0x8d0 [ 863.653831][ T23] hub_event+0x16f2/0x3800 [ 863.658246][ T23] ? hub_port_debounce+0x260/0x260 [ 863.663387][ T23] ? find_held_lock+0x2d/0x110 [ 863.668176][ T23] ? mark_held_locks+0xe0/0xe0 [ 863.672971][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 863.678509][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 863.683816][ T23] process_one_work+0x92b/0x1530 [ 863.688749][ T23] ? pwq_dec_nr_in_flight+0x310/0x310 [ 863.694136][ T23] worker_thread+0x7ab/0xe20 [ 863.698731][ T23] ? process_one_work+0x1530/0x1530 [ 863.703981][ T23] kthread+0x318/0x420 [ 863.708044][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 863.713455][ T23] ret_from_fork+0x24/0x30 [ 863.717934][ T23] INFO: task kworker/1:0:1732 blocked for more than 143 seconds. [ 863.725697][ T23] Not tainted 5.4.0-rc6+ #0 [ 863.730833][ T23] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 863.739483][ T23] kworker/1:0 D26016 1732 2 0x80004000 [ 863.745849][ T23] Workqueue: usb_hub_wq hub_event [ 863.750894][ T23] Call Trace: [ 863.754290][ T23] ? __schedule+0x898/0x1ca0 [ 863.758872][ T23] ? __sched_text_start+0x8/0x8 [ 863.763771][ T23] ? lockdep_hardirqs_on+0x382/0x580 [ 863.769067][ T23] schedule+0xca/0x250 [ 863.773171][ T23] schedule_timeout+0x682/0xb20 [ 863.778028][ T23] ? find_held_lock+0x2d/0x110 [ 863.782820][ T23] ? usleep_range+0x160/0x160 [ 863.787490][ T23] ? mark_lock+0xbc/0x1160 [ 863.791932][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 863.796951][ T23] ? mark_held_locks+0x9f/0xe0 [ 863.801900][ T23] ? _raw_spin_unlock_irq+0x24/0x30 [ 863.807105][ T23] wait_for_completion+0x26f/0x3c0 [ 863.812270][ T23] ? wait_for_completion_interruptible+0x420/0x420 [ 863.818776][ T23] ? wake_up_q+0xf0/0xf0 [ 863.823092][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 863.828652][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 863.833965][ T23] kthread_stop+0x10c/0x610 [ 863.838503][ T23] hwrng_unregister+0x190/0x210 [ 863.843378][ T23] chaoskey_disconnect+0x1b2/0x200 [ 863.848493][ T23] usb_unbind_interface+0x1bd/0x8a0 [ 863.853734][ T23] ? usb_autoresume_device+0x60/0x60 [ 863.859032][ T23] device_release_driver_internal+0x42f/0x500 [ 863.865123][ T23] bus_remove_device+0x2dc/0x4a0 [ 863.870055][ T23] device_del+0x420/0xb20 [ 863.874406][ T23] ? __device_link_del+0x2f0/0x2f0 [ 863.879512][ T23] ? usb_remove_ep_devs+0x3e/0x80 [ 863.884561][ T23] ? remove_intf_ep_devs+0x13f/0x1d0 [ 863.889844][ T23] usb_disable_device+0x211/0x690 [ 863.894888][ T23] usb_disconnect+0x284/0x8d0 [ 863.899574][ T23] hub_event+0x16f2/0x3800 [ 863.904015][ T23] ? hub_port_debounce+0x260/0x260 [ 863.909130][ T23] ? find_held_lock+0x2d/0x110 [ 863.913911][ T23] ? mark_held_locks+0xe0/0xe0 [ 863.918680][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 863.924275][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 863.929649][ T23] process_one_work+0x92b/0x1530 [ 863.934635][ T23] ? pwq_dec_nr_in_flight+0x310/0x310 [ 863.940010][ T23] worker_thread+0x7ab/0xe20 [ 863.944631][ T23] ? process_one_work+0x1530/0x1530 [ 863.953929][ T23] kthread+0x318/0x420 [ 863.957979][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 863.963372][ T23] ret_from_fork+0x24/0x30 [ 863.967785][ T23] INFO: task kworker/1:3:1733 blocked for more than 144 seconds. [ 863.975546][ T23] Not tainted 5.4.0-rc6+ #0 [ 863.980710][ T23] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 863.989366][ T23] kworker/1:3 D26016 1733 2 0x80004000 [ 863.995744][ T23] Workqueue: usb_hub_wq hub_event [ 864.000807][ T23] Call Trace: [ 864.004091][ T23] ? __schedule+0x898/0x1ca0 [ 864.008677][ T23] ? __sched_text_start+0x8/0x8 [ 864.013547][ T23] ? lockdep_hardirqs_on+0x382/0x580 [ 864.018828][ T23] schedule+0xca/0x250 [ 864.022927][ T23] schedule_timeout+0x682/0xb20 [ 864.027778][ T23] ? find_held_lock+0x2d/0x110 [ 864.032578][ T23] ? usleep_range+0x160/0x160 [ 864.037252][ T23] ? mark_lock+0xbc/0x1160 [ 864.041688][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 864.046718][ T23] ? mark_held_locks+0x9f/0xe0 [ 864.051522][ T23] ? _raw_spin_unlock_irq+0x24/0x30 [ 864.056729][ T23] wait_for_completion+0x26f/0x3c0 [ 864.061862][ T23] ? wait_for_completion_interruptible+0x420/0x420 [ 864.068403][ T23] ? wake_up_q+0xf0/0xf0 [ 864.072679][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 864.078218][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 864.083522][ T23] kthread_stop+0x10c/0x610 [ 864.088022][ T23] hwrng_unregister+0x190/0x210 [ 864.092902][ T23] chaoskey_disconnect+0x1b2/0x200 [ 864.098009][ T23] usb_unbind_interface+0x1bd/0x8a0 [ 864.103248][ T23] ? usb_autoresume_device+0x60/0x60 [ 864.108527][ T23] device_release_driver_internal+0x42f/0x500 [ 864.114668][ T23] bus_remove_device+0x2dc/0x4a0 [ 864.119597][ T23] device_del+0x420/0xb20 [ 864.123944][ T23] ? __device_link_del+0x2f0/0x2f0 [ 864.129055][ T23] ? usb_remove_ep_devs+0x3e/0x80 [ 864.134106][ T23] ? remove_intf_ep_devs+0x13f/0x1d0 [ 864.139383][ T23] usb_disable_device+0x211/0x690 [ 864.144424][ T23] usb_disconnect+0x284/0x8d0 [ 864.149110][ T23] hub_event+0x16f2/0x3800 [ 864.153574][ T23] ? hub_port_debounce+0x260/0x260 [ 864.158681][ T23] ? find_held_lock+0x2d/0x110 [ 864.163497][ T23] ? mark_held_locks+0xe0/0xe0 [ 864.168260][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 864.173847][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 864.179141][ T23] process_one_work+0x92b/0x1530 [ 864.184094][ T23] ? pwq_dec_nr_in_flight+0x310/0x310 [ 864.189486][ T23] worker_thread+0x7ab/0xe20 [ 864.194093][ T23] ? process_one_work+0x1530/0x1530 [ 864.199288][ T23] kthread+0x318/0x420 [ 864.203383][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 864.208747][ T23] ret_from_fork+0x24/0x30 [ 864.213185][ T23] INFO: task kworker/1:4:1735 blocked for more than 144 seconds. [ 864.220933][ T23] Not tainted 5.4.0-rc6+ #0 [ 864.225939][ T23] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 864.234630][ T23] kworker/1:4 D25760 1735 2 0x80004000 [ 864.240992][ T23] Workqueue: usb_hub_wq hub_event [ 864.246007][ T23] Call Trace: [ 864.249288][ T23] ? __schedule+0x898/0x1ca0 [ 864.253905][ T23] ? __sched_text_start+0x8/0x8 [ 864.258751][ T23] ? lockdep_hardirqs_on+0x382/0x580 [ 864.264052][ T23] schedule+0xca/0x250 [ 864.268121][ T23] schedule_timeout+0x682/0xb20 [ 864.273000][ T23] ? find_held_lock+0x2d/0x110 [ 864.277760][ T23] ? usleep_range+0x160/0x160 [ 864.282476][ T23] ? mark_lock+0xbc/0x1160 [ 864.286881][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 864.291922][ T23] ? mark_held_locks+0x9f/0xe0 [ 864.296688][ T23] ? _raw_spin_unlock_irq+0x24/0x30 [ 864.301916][ T23] wait_for_completion+0x26f/0x3c0 [ 864.307023][ T23] ? wait_for_completion_interruptible+0x420/0x420 [ 864.313546][ T23] ? wake_up_q+0xf0/0xf0 [ 864.317790][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 864.323372][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 864.328647][ T23] kthread_stop+0x10c/0x610 [ 864.333194][ T23] hwrng_unregister+0x190/0x210 [ 864.338042][ T23] chaoskey_disconnect+0x1b2/0x200 [ 864.343183][ T23] usb_unbind_interface+0x1bd/0x8a0 [ 864.348378][ T23] ? usb_autoresume_device+0x60/0x60 [ 864.353704][ T23] device_release_driver_internal+0x42f/0x500 [ 864.359780][ T23] bus_remove_device+0x2dc/0x4a0 [ 864.364764][ T23] device_del+0x420/0xb20 [ 864.369094][ T23] ? __device_link_del+0x2f0/0x2f0 [ 864.374239][ T23] ? usb_remove_ep_devs+0x3e/0x80 [ 864.379259][ T23] ? remove_intf_ep_devs+0x13f/0x1d0 [ 864.384621][ T23] usb_disable_device+0x211/0x690 [ 864.389641][ T23] usb_disconnect+0x284/0x8d0 [ 864.394347][ T23] hub_event+0x16f2/0x3800 [ 864.398802][ T23] ? hub_port_debounce+0x260/0x260 [ 864.403939][ T23] ? find_held_lock+0x2d/0x110 [ 864.408695][ T23] ? mark_held_locks+0xe0/0xe0 [ 864.413476][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 864.419070][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 864.424383][ T23] process_one_work+0x92b/0x1530 [ 864.429322][ T23] ? pwq_dec_nr_in_flight+0x310/0x310 [ 864.434747][ T23] worker_thread+0x7ab/0xe20 [ 864.439336][ T23] ? process_one_work+0x1530/0x1530 [ 864.444559][ T23] kthread+0x318/0x420 [ 864.448618][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 864.454007][ T23] ret_from_fork+0x24/0x30 [ 864.458424][ T23] [ 864.458424][ T23] Showing all locks held in the system: [ 864.466200][ T23] 5 locks held by kworker/1:1/22: executing program [ 864.471232][ T23] #0: ffff8881d8c82d28 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 [ 864.481414][ T23] #1: ffff8881d932fdd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 [ 864.492143][ T23] #2: ffff8881d515c200 (&dev->mutex){....}, at: hub_event+0x1b2/0x3800 [ 864.500515][ T23] #3: ffff8881cb4fd200 (&dev->mutex){....}, at: usb_disconnect+0x91/0x8d0 [ 864.509160][ T23] #4: ffff8881cb4fe190 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 864.519173][ T23] 1 lock held by khungtaskd/23: [ 864.524040][ T23] #0: ffffffff86cfe8a0 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x269 [ 864.533527][ T23] 5 locks held by kworker/0:2/101: [ 864.538626][ T23] #0: ffff8881d8c82d28 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 [ 864.548807][ T23] #1: ffff8881d536fdd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 [ 864.559522][ T23] #2: ffff8881d50a1200 (&dev->mutex){....}, at: hub_event+0x1b2/0x3800 [ 864.567944][ T23] #3: ffff8881cffb7200 (&dev->mutex){....}, at: usb_disconnect+0x91/0x8d0 [ 864.576566][ T23] #4: ffff8881cf220190 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 864.586649][ T23] 5 locks held by kworker/1:2/102: [ 864.591770][ T23] #0: ffff8881d8c82d28 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 [ 864.601951][ T23] #1: ffff8881d53d7dd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 [ 864.612669][ T23] #2: ffff8881d50d0200 (&dev->mutex){....}, at: hub_event+0x1b2/0x3800 [ 864.621046][ T23] #3: ffff8881cea1b200 (&dev->mutex){....}, at: usb_disconnect+0x91/0x8d0 [ 864.629644][ T23] #4: ffff8881cea1c190 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 864.639726][ T23] 1 lock held by rsyslogd/1599: [ 864.644654][ T23] #0: ffff8881d3aaad60 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xe3/0x100 [ 864.653370][ T23] 2 locks held by getty/1690: [ 864.658056][ T23] #0: ffff8881d1458090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 864.667417][ T23] #1: ffffc900004492e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 864.677006][ T23] 2 locks held by getty/1691: [ 864.681692][ T23] #0: ffff8881d1569090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 864.690921][ T23] #1: ffffc900004692e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 864.700502][ T23] 2 locks held by getty/1692: [ 864.705166][ T23] #0: ffff8881d1430090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 864.714404][ T23] #1: ffffc9000044d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 864.724072][ T23] 2 locks held by getty/1693: [ 864.728725][ T23] #0: ffff8881d1436090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 864.737968][ T23] #1: ffffc900004552e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 864.747616][ T23] 2 locks held by getty/1694: [ 864.752313][ T23] #0: ffff8881d145e090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 864.761583][ T23] #1: ffffc9000045d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 864.771173][ T23] 2 locks held by getty/1695: [ 864.775841][ T23] #0: ffff8881d156a090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 864.785070][ T23] #1: ffffc9000046d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 864.794671][ T23] 2 locks held by getty/1696: [ 864.799379][ T23] #0: ffff8881d2225090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 864.808627][ T23] #1: ffffc900004352e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 864.818229][ T23] 5 locks held by kworker/1:0/1732: [ 864.823439][ T23] #0: ffff8881d8c82d28 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 [ 864.833647][ T23] #1: ffff8881cfa67dd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 [ 864.844349][ T23] #2: ffff8881d512d200 (&dev->mutex){....}, at: hub_event+0x1b2/0x3800 [ 864.852757][ T23] #3: ffff8881cf153200 (&dev->mutex){....}, at: usb_disconnect+0x91/0x8d0 [ 864.861378][ T23] #4: ffff8881cf156190 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 864.871397][ T23] 5 locks held by kworker/1:3/1733: [ 864.876571][ T23] #0: ffff8881d8c82d28 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 [ 864.886777][ T23] #1: ffff8881d024fdd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 [ 864.897635][ T23] #2: ffff8881d50d7200 (&dev->mutex){....}, at: hub_event+0x1b2/0x3800 [ 864.906121][ T23] #3: ffff8881c5fe9200 (&dev->mutex){....}, at: usb_disconnect+0x91/0x8d0 [ 864.914740][ T23] #4: ffff8881c5feb190 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 864.924755][ T23] 5 locks held by kworker/1:4/1735: [ 864.929938][ T23] #0: ffff8881d8c82d28 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 [ 864.940240][ T23] #1: ffff8881cfaa7dd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 [ 864.950952][ T23] #2: ffff8881d510e200 (&dev->mutex){....}, at: hub_event+0x1b2/0x3800 [ 864.959267][ T23] #3: ffff8881cf982200 (&dev->mutex){....}, at: usb_disconnect+0x91/0x8d0 [ 864.967886][ T23] #4: ffff8881cf400190 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 864.977898][ T23] [ 864.980211][ T23] ============================================= [ 864.980211][ T23] [ 864.988638][ T23] NMI backtrace for cpu 0 [ 864.992979][ T23] CPU: 0 PID: 23 Comm: khungtaskd Not tainted 5.4.0-rc6+ #0 [ 865.000237][ T23] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 865.010269][ T23] Call Trace: [ 865.013642][ T23] dump_stack+0xca/0x13e [ 865.017920][ T23] ? x86_vector_activate.cold+0x80/0xdd [ 865.023449][ T23] nmi_cpu_backtrace.cold+0x55/0x96 [ 865.028644][ T23] ? lapic_can_unplug_cpu.cold+0x3b/0x3b [ 865.034267][ T23] nmi_trigger_cpumask_backtrace+0x1b0/0x1c7 [ 865.040286][ T23] watchdog+0x9a4/0xe50 [ 865.044424][ T23] ? reset_hung_task_detector+0x30/0x30 [ 865.049947][ T23] kthread+0x318/0x420 [ 865.053993][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 865.059342][ T23] ret_from_fork+0x24/0x30 [ 865.063820][ T23] Sending NMI from CPU 0 to CPUs 1: [ 865.069080][ C1] NMI backtrace for cpu 1 skipped: idling at default_idle+0x28/0x2e0 [ 865.070020][ T23] Kernel panic - not syncing: hung_task: blocked tasks [ 865.083968][ T23] CPU: 0 PID: 23 Comm: khungtaskd Not tainted 5.4.0-rc6+ #0 [ 865.091227][ T23] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 865.101270][ T23] Call Trace: [ 865.104558][ T23] dump_stack+0xca/0x13e [ 865.108845][ T23] panic+0x2aa/0x6e1 [ 865.112721][ T23] ? add_taint.cold+0x16/0x16 [ 865.117385][ T23] ? cpumask_next+0x1f/0x30 [ 865.121899][ T23] ? printk_safe_flush+0xd9/0x120 [ 865.126901][ T23] ? watchdog+0x9a4/0xe50 [ 865.131208][ T23] ? nmi_trigger_cpumask_backtrace+0x168/0x1c7 [ 865.137341][ T23] watchdog+0x9b5/0xe50 [ 865.141495][ T23] ? reset_hung_task_detector+0x30/0x30 [ 865.147029][ T23] kthread+0x318/0x420 [ 865.151098][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 865.156445][ T23] ret_from_fork+0x24/0x30 [ 865.161750][ T23] Kernel Offset: disabled [ 865.166073][ T23] Rebooting in 86400 seconds..