[info] Using makefile-style concurrent boot in runlevel 2. [ 14.392162][ C1] random: crng init done [....] 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 '10.128.0.20' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 745.047480][ T102] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 745.047488][ T83] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 745.064709][ T1739] usb 3-1: new high-speed USB device number 2 using dummy_hcd [ 745.068160][ T5] usb 4-1: new high-speed USB device number 2 using dummy_hcd [ 745.072285][ T17] usb 6-1: new high-speed USB device number 2 using dummy_hcd [ 745.080137][ T1738] usb 2-1: new high-speed USB device number 2 using dummy_hcd [ 745.287202][ T102] usb 5-1: Using ep0 maxpacket: 16 [ 745.327343][ T83] usb 1-1: Using ep0 maxpacket: 16 [ 745.332602][ T1739] usb 3-1: Using ep0 maxpacket: 16 [ 745.337216][ T5] usb 4-1: Using ep0 maxpacket: 16 [ 745.338434][ T17] usb 6-1: Using ep0 maxpacket: 16 [ 745.343572][ T1738] usb 2-1: Using ep0 maxpacket: 16 [ 745.407475][ T102] usb 5-1: config 0 has an invalid interface number: 69 but max is 0 [ 745.415961][ T102] usb 5-1: config 0 has no interface number 0 [ 745.422373][ T102] usb 5-1: config 0 interface 69 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 745.432483][ T102] usb 5-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 745.441729][ T102] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 745.451758][ T102] usb 5-1: config 0 descriptor?? [ 745.457361][ T5] usb 4-1: config 0 has an invalid interface number: 69 but max is 0 [ 745.457401][ T83] usb 1-1: config 0 has an invalid interface number: 69 but max is 0 [ 745.465471][ T5] usb 4-1: config 0 has no interface number 0 [ 745.465733][ T5] usb 4-1: config 0 interface 69 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 745.473658][ T83] usb 1-1: config 0 has no interface number 0 [ 745.474161][ T83] usb 1-1: config 0 interface 69 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 745.479979][ T5] usb 4-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 745.479993][ T5] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 745.482192][ T5] usb 4-1: config 0 descriptor?? [ 745.490105][ T83] usb 1-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 745.490120][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 745.490173][ T17] usb 6-1: config 0 has an invalid interface number: 69 but max is 0 [ 745.496515][ T1738] usb 2-1: config 0 has an invalid interface number: 69 but max is 0 [ 745.506234][ T17] usb 6-1: config 0 has no interface number 0 [ 745.506317][ T1739] usb 3-1: config 0 has an invalid interface number: 69 but max is 0 [ 745.515397][ T1738] usb 2-1: config 0 has no interface number 0 [ 745.523459][ T1739] usb 3-1: config 0 has no interface number 0 [ 745.531854][ T1738] usb 2-1: config 0 interface 69 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 745.544037][ T17] usb 6-1: config 0 interface 69 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 745.548331][ T1738] usb 2-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 745.556562][ T17] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 745.566282][ T1738] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 745.572733][ T17] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 executing program [ 745.573591][ T1739] usb 3-1: config 0 interface 69 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 745.588535][ T1738] usb 2-1: config 0 descriptor?? [ 745.593344][ T1739] usb 3-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 745.593360][ T1739] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 745.594333][ T83] usb 1-1: config 0 descriptor?? [ 745.688626][ T17] usb 6-1: config 0 descriptor?? [ 745.694155][ T1739] usb 3-1: config 0 descriptor?? executing program [ 745.767483][ T102] usb 5-1: string descriptor 0 read error: -71 [ 745.801570][ T102] usb 5-1: USB disconnect, device number 2 executing program [ 745.817767][ T1747] hwrng: no data available [ 745.827433][ T5] usb 4-1: string descriptor 0 read error: -71 [ 745.850349][ T5] usb 4-1: USB disconnect, device number 2 executing program executing program executing program [ 745.877341][ T1738] usb 2-1: string descriptor 0 read error: -71 [ 745.898498][ T1738] usb 2-1: USB disconnect, device number 2 [ 745.977319][ T83] usb 1-1: string descriptor 0 read error: -71 [ 745.983624][ T17] usb 6-1: string descriptor 0 read error: -71 [ 745.990131][ T1739] usb 3-1: string descriptor 0 read error: -71 [ 746.018444][ T17] chaoskey 6-1:0.69: Unable to register with hwrng [ 746.026222][ T1739] chaoskey 3-1:0.69: Unable to register with hwrng [ 746.034368][ T83] usb 1-1: USB disconnect, device number 2 [ 746.040563][ T17] usb 6-1: USB disconnect, device number 2 [ 746.048270][ T1739] usb 3-1: USB disconnect, device number 2 [ 746.417610][ T17] usb 6-1: new high-speed USB device number 3 using dummy_hcd [ 746.425370][ T1739] usb 3-1: new high-speed USB device number 3 using dummy_hcd [ 746.657214][ T17] usb 6-1: Using ep0 maxpacket: 16 [ 746.667213][ T1739] usb 3-1: Using ep0 maxpacket: 16 [ 746.777392][ T17] usb 6-1: config 0 has an invalid interface number: 69 but max is 0 [ 746.785518][ T17] usb 6-1: config 0 has no interface number 0 [ 746.791725][ T1739] usb 3-1: config 0 has an invalid interface number: 69 but max is 0 [ 746.799827][ T1739] usb 3-1: config 0 has no interface number 0 [ 746.805993][ T17] usb 6-1: config 0 interface 69 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 746.816039][ T17] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 746.825103][ T17] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 746.833157][ T1739] usb 3-1: config 0 interface 69 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 746.843098][ T1739] usb 3-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 746.852152][ T1739] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 746.861112][ T17] usb 6-1: config 0 descriptor?? [ 746.869713][ T1739] usb 3-1: config 0 descriptor?? executing program executing program [ 747.137369][ T17] usb 6-1: string descriptor 0 read error: -71 [ 747.147368][ T1739] usb 3-1: string descriptor 0 read error: -71 [ 747.159444][ T17] usb 6-1: USB disconnect, device number 3 [ 747.165479][ T1739] chaoskey 3-1:0.69: Unable to register with hwrng [ 747.174405][ T1739] usb 3-1: USB disconnect, device number 3 [ 747.527211][ T1739] usb 3-1: new high-speed USB device number 4 using dummy_hcd [ 747.767191][ T1739] usb 3-1: Using ep0 maxpacket: 16 [ 747.887257][ T1739] usb 3-1: config 0 has an invalid interface number: 69 but max is 0 [ 747.895409][ T1739] usb 3-1: config 0 has no interface number 0 [ 747.901582][ T1739] usb 3-1: config 0 interface 69 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 747.911573][ T1739] usb 3-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 747.920626][ T1739] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 747.929446][ T1739] usb 3-1: config 0 descriptor?? executing program [ 748.217891][ T1739] usb 3-1: string descriptor 0 read error: -71 [ 748.238508][ T1739] usb 3-1: 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 [ 756.767231][ T102] usb 5-1: new high-speed USB device number 3 using dummy_hcd [ 757.007181][ T102] usb 5-1: Using ep0 maxpacket: 16 executing program [ 757.137353][ T102] usb 5-1: config 0 has an invalid interface number: 69 but max is 0 [ 757.145623][ T102] usb 5-1: config 0 has no interface number 0 [ 757.151855][ T102] usb 5-1: config 0 interface 69 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 757.161829][ T102] usb 5-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 757.170982][ T102] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 757.179868][ T102] usb 5-1: config 0 descriptor?? executing program [ 757.467262][ T102] usb 5-1: string descriptor 0 read error: -71 [ 757.489160][ T102] usb 5-1: USB disconnect, device number 3 [ 757.507299][ T1777] 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 [ 768.297285][ T102] usb 5-1: new high-speed USB device number 4 using dummy_hcd [ 768.537198][ T102] usb 5-1: Using ep0 maxpacket: 16 [ 768.657366][ T102] usb 5-1: config 0 has an invalid interface number: 69 but max is 0 [ 768.666143][ T102] usb 5-1: config 0 has no interface number 0 [ 768.674878][ T102] usb 5-1: config 0 interface 69 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 768.686081][ T102] usb 5-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 768.699553][ T102] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 768.714375][ T102] usb 5-1: config 0 descriptor?? executing program [ 768.997412][ T102] usb 5-1: string descriptor 0 read error: -71 [ 769.018805][ T102] usb 5-1: USB disconnect, device number 4 [ 769.047251][ T1793] 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 [ 779.807215][ T102] usb 5-1: new high-speed USB device number 5 using dummy_hcd [ 780.047176][ T102] usb 5-1: Using ep0 maxpacket: 16 [ 780.167303][ T102] usb 5-1: config 0 has an invalid interface number: 69 but max is 0 [ 780.177192][ T102] usb 5-1: config 0 has no interface number 0 [ 780.184094][ T102] usb 5-1: config 0 interface 69 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 780.194604][ T102] usb 5-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 780.203770][ T102] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 780.213299][ T102] usb 5-1: config 0 descriptor?? executing program [ 780.507290][ T102] usb 5-1: string descriptor 0 read error: -71 [ 780.528971][ T102] usb 5-1: USB disconnect, device number 5 [ 780.535012][ T1808] 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 executing program [ 791.327190][ T102] usb 5-1: new high-speed USB device number 6 using dummy_hcd [ 791.567195][ T102] usb 5-1: Using ep0 maxpacket: 16 [ 791.687258][ T102] usb 5-1: config 0 has an invalid interface number: 69 but max is 0 [ 791.695435][ T102] usb 5-1: config 0 has no interface number 0 [ 791.701587][ T102] usb 5-1: config 0 interface 69 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 791.711537][ T102] usb 5-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 791.720582][ T102] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 791.729375][ T102] usb 5-1: config 0 descriptor?? executing program [ 792.007330][ T102] usb 5-1: string descriptor 0 read error: -71 [ 792.029012][ T102] usb 5-1: USB disconnect, device number 6 [ 792.057492][ T1826] 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 [ 802.847218][ T102] usb 5-1: new high-speed USB device number 7 using dummy_hcd [ 803.087181][ T102] usb 5-1: Using ep0 maxpacket: 16 executing program [ 803.207266][ T102] usb 5-1: config 0 has an invalid interface number: 69 but max is 0 [ 803.215571][ T102] usb 5-1: config 0 has no interface number 0 [ 803.221852][ T102] usb 5-1: config 0 interface 69 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 803.231897][ T102] usb 5-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 803.240975][ T102] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 803.249703][ T102] usb 5-1: config 0 descriptor?? executing program [ 803.527406][ T102] usb 5-1: string descriptor 0 read error: -71 [ 803.548797][ T102] usb 5-1: USB disconnect, device number 7 [ 803.577359][ T1843] 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 [ 814.367253][ T102] usb 5-1: new high-speed USB device number 8 using dummy_hcd [ 814.607180][ T102] usb 5-1: Using ep0 maxpacket: 16 [ 814.727298][ T102] usb 5-1: config 0 has an invalid interface number: 69 but max is 0 [ 814.735466][ T102] usb 5-1: config 0 has no interface number 0 [ 814.741622][ T102] usb 5-1: config 0 interface 69 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 814.751554][ T102] usb 5-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 814.760599][ T102] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 814.769538][ T102] usb 5-1: config 0 descriptor?? executing program [ 815.047375][ T102] usb 5-1: string descriptor 0 read error: -71 [ 815.069668][ T102] usb 5-1: USB disconnect, device number 8 [ 815.087270][ T1858] 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 [ 825.887191][ T102] usb 5-1: new high-speed USB device number 9 using dummy_hcd executing program [ 826.127166][ T102] usb 5-1: Using ep0 maxpacket: 16 [ 826.247368][ T102] usb 5-1: config 0 has an invalid interface number: 69 but max is 0 [ 826.255802][ T102] usb 5-1: config 0 has no interface number 0 [ 826.262606][ T102] usb 5-1: config 0 interface 69 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 826.273040][ T102] usb 5-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 826.282416][ T102] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 826.291202][ T102] usb 5-1: config 0 descriptor?? executing program [ 826.577283][ T102] usb 5-1: string descriptor 0 read error: -71 [ 826.612139][ T102] usb 5-1: USB disconnect, device number 9 [ 826.627435][ T1876] 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 [ 837.417223][ T102] usb 5-1: new high-speed USB device number 10 using dummy_hcd [ 837.657190][ T102] usb 5-1: Using ep0 maxpacket: 16 [ 837.777340][ T102] usb 5-1: config 0 has an invalid interface number: 69 but max is 0 [ 837.785493][ T102] usb 5-1: config 0 has no interface number 0 [ 837.791635][ T102] usb 5-1: config 0 interface 69 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 837.801585][ T102] usb 5-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 837.810679][ T102] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 837.819496][ T102] usb 5-1: config 0 descriptor?? executing program [ 838.107265][ T102] usb 5-1: string descriptor 0 read error: -71 [ 838.141881][ T102] usb 5-1: USB disconnect, device number 10 [ 838.157348][ T1892] 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 [ 848.927204][ T102] usb 5-1: new high-speed USB device number 11 using dummy_hcd [ 849.167238][ T102] usb 5-1: Using ep0 maxpacket: 16 [ 849.287482][ T102] usb 5-1: config 0 has an invalid interface number: 69 but max is 0 [ 849.296530][ T102] usb 5-1: config 0 has no interface number 0 [ 849.302864][ T102] usb 5-1: config 0 interface 69 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 849.313470][ T102] usb 5-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 849.323078][ T102] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 849.332736][ T102] usb 5-1: config 0 descriptor?? executing program [ 849.617394][ T102] usb 5-1: string descriptor 0 read error: -71 [ 849.639310][ T102] usb 5-1: USB disconnect, device number 11 [ 849.667535][ T1908] 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 [ 860.447204][ T102] usb 5-1: new high-speed USB device number 12 using dummy_hcd [ 860.687271][ T102] usb 5-1: Using ep0 maxpacket: 16 executing program [ 860.807349][ T102] usb 5-1: config 0 has an invalid interface number: 69 but max is 0 [ 860.816398][ T102] usb 5-1: config 0 has no interface number 0 [ 860.822750][ T102] usb 5-1: config 0 interface 69 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 860.832892][ T102] usb 5-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 860.842094][ T102] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 860.851454][ T102] usb 5-1: config 0 descriptor?? executing program executing program executing program [ 861.127398][ T102] usb 5-1: string descriptor 0 read error: -71 [ 861.148815][ T102] usb 5-1: USB disconnect, device number 12 [ 861.167250][ 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 [ 871.967209][ T102] usb 5-1: new high-speed USB device number 13 using dummy_hcd executing program [ 872.207232][ T102] usb 5-1: Using ep0 maxpacket: 16 [ 872.327249][ T102] usb 5-1: config 0 has an invalid interface number: 69 but max is 0 [ 872.335443][ T102] usb 5-1: config 0 has no interface number 0 [ 872.341602][ T102] usb 5-1: config 0 interface 69 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 872.351535][ T102] usb 5-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 872.360590][ T102] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 872.369377][ T102] usb 5-1: config 0 descriptor?? executing program [ 872.647334][ T102] usb 5-1: string descriptor 0 read error: -71 [ 872.671229][ T102] usb 5-1: USB disconnect, device number 13 [ 872.687244][ T1942] 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 [ 883.507188][ T102] usb 5-1: new high-speed USB device number 14 using dummy_hcd [ 883.757207][ T102] usb 5-1: Using ep0 maxpacket: 16 [ 883.877282][ T102] usb 5-1: config 0 has an invalid interface number: 69 but max is 0 [ 883.885438][ T102] usb 5-1: config 0 has no interface number 0 [ 883.891586][ T102] usb 5-1: config 0 interface 69 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 883.901536][ T102] usb 5-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 883.910599][ T102] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 883.919411][ T102] usb 5-1: config 0 descriptor?? executing program [ 884.197312][ T102] usb 5-1: string descriptor 0 read error: -71 [ 884.221152][ T102] usb 5-1: USB disconnect, device number 14 [ 884.247269][ T1958] 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 [ 895.007216][ T102] usb 5-1: new high-speed USB device number 15 using dummy_hcd [ 895.247182][ T102] usb 5-1: Using ep0 maxpacket: 16 [ 895.367294][ T102] usb 5-1: config 0 has an invalid interface number: 69 but max is 0 [ 895.375394][ T102] usb 5-1: config 0 has no interface number 0 [ 895.381545][ T102] usb 5-1: config 0 interface 69 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 895.391491][ T102] usb 5-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 895.400571][ T102] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 895.409489][ T102] usb 5-1: config 0 descriptor?? executing program [ 895.697263][ T102] usb 5-1: string descriptor 0 read error: -71 [ 895.728850][ T102] usb 5-1: USB disconnect, device number 15 [ 895.747391][ T1973] 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 [ 903.617220][ T23] INFO: task kworker/0:0:5 blocked for more than 143 seconds. [ 903.625110][ T23] Not tainted 5.3.0+ #0 [ 903.629857][ T23] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 903.638743][ T23] kworker/0:0 D25832 5 2 0x80004000 [ 903.646777][ T23] Workqueue: usb_hub_wq hub_event [ 903.651855][ T23] Call Trace: [ 903.655209][ T23] ? __schedule+0x6e1/0x15d0 [ 903.660251][ T23] ? __sched_text_start+0x8/0x8 [ 903.665244][ T23] ? lockdep_hardirqs_on+0x379/0x580 [ 903.670825][ T23] schedule+0xca/0x250 [ 903.675703][ T23] schedule_timeout+0x682/0xb20 [ 903.680947][ T23] ? find_held_lock+0x2d/0x110 [ 903.685902][ T23] ? usleep_range+0x160/0x160 [ 903.692660][ T23] ? mark_lock+0xbc/0x1160 [ 903.697181][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 903.702200][ T23] ? mark_held_locks+0x9f/0xe0 [ 903.706978][ T23] ? _raw_spin_unlock_irq+0x24/0x30 [ 903.712253][ T23] wait_for_completion+0x26f/0x3c0 [ 903.717553][ T23] ? wait_for_completion_interruptible+0x420/0x420 [ 903.724068][ T23] ? wake_up_q+0xf0/0xf0 [ 903.728441][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 903.734164][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 903.739508][ T23] kthread_stop+0x10c/0x600 [ 903.744140][ T23] hwrng_unregister+0x190/0x210 [ 903.749106][ T23] chaoskey_disconnect+0x1b2/0x200 [ 903.754234][ T23] usb_unbind_interface+0x1bd/0x8a0 [ 903.759526][ T23] ? usb_autoresume_device+0x60/0x60 [ 903.764897][ T23] device_release_driver_internal+0x42f/0x500 [ 903.771057][ T23] bus_remove_device+0x2dc/0x4a0 [ 903.776030][ T23] device_del+0x420/0xb10 [ 903.780439][ T23] ? __device_links_no_driver+0x240/0x240 [ 903.786344][ T23] ? usb_remove_ep_devs+0x3e/0x80 [ 903.791635][ T23] ? remove_intf_ep_devs+0x13f/0x1d0 [ 903.797715][ T23] usb_disable_device+0x211/0x690 [ 903.802754][ T23] usb_disconnect+0x284/0x8d0 [ 903.807473][ T23] hub_event+0x1454/0x3640 [ 903.811904][ T23] ? find_held_lock+0x2d/0x110 [ 903.816675][ T23] ? mark_held_locks+0xe0/0xe0 [ 903.821743][ T23] ? hub_port_debounce+0x260/0x260 [ 903.826892][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 903.832630][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 903.839896][ T23] process_one_work+0x92b/0x1530 [ 903.844840][ T23] ? pwq_dec_nr_in_flight+0x310/0x310 [ 903.850307][ T23] worker_thread+0x7ab/0xe20 [ 903.854902][ T23] ? process_one_work+0x1530/0x1530 [ 903.860187][ T23] kthread+0x318/0x420 [ 903.864257][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 903.869672][ T23] ret_from_fork+0x24/0x30 [ 903.874197][ T23] INFO: task kworker/1:0:17 blocked for more than 143 seconds. [ 903.882798][ T23] Not tainted 5.3.0+ #0 [ 903.888647][ T23] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 903.898382][ T23] kworker/1:0 D25808 17 2 0x80004000 [ 903.904972][ T23] Workqueue: usb_hub_wq hub_event [ 903.910096][ T23] Call Trace: [ 903.913768][ T23] ? __schedule+0x6e1/0x15d0 [ 903.918654][ T23] ? __sched_text_start+0x8/0x8 [ 903.923606][ T23] ? lockdep_hardirqs_on+0x379/0x580 [ 903.929054][ T23] schedule+0xca/0x250 [ 903.933167][ T23] schedule_timeout+0x682/0xb20 [ 903.938087][ T23] ? find_held_lock+0x2d/0x110 [ 903.942869][ T23] ? usleep_range+0x160/0x160 [ 903.947677][ T23] ? mark_lock+0xbc/0x1160 [ 903.952118][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 903.957241][ T23] ? mark_held_locks+0x9f/0xe0 [ 903.962937][ T23] ? _raw_spin_unlock_irq+0x24/0x30 [ 903.968204][ T23] wait_for_completion+0x26f/0x3c0 [ 903.973345][ T23] ? wait_for_completion_interruptible+0x420/0x420 [ 903.979916][ T23] ? wake_up_q+0xf0/0xf0 [ 903.984257][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 903.989905][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 903.995384][ T23] kthread_stop+0x10c/0x600 [ 903.999947][ T23] hwrng_unregister+0x190/0x210 [ 904.005885][ T23] chaoskey_disconnect+0x1b2/0x200 [ 904.011155][ T23] usb_unbind_interface+0x1bd/0x8a0 [ 904.016678][ T23] ? usb_autoresume_device+0x60/0x60 [ 904.022687][ T23] device_release_driver_internal+0x42f/0x500 [ 904.028795][ T23] bus_remove_device+0x2dc/0x4a0 [ 904.033766][ T23] device_del+0x420/0xb10 [ 904.038160][ T23] ? __device_links_no_driver+0x240/0x240 [ 904.043883][ T23] ? usb_remove_ep_devs+0x3e/0x80 [ 904.048940][ T23] ? remove_intf_ep_devs+0x13f/0x1d0 [ 904.054239][ T23] usb_disable_device+0x211/0x690 [ 904.059307][ T23] usb_disconnect+0x284/0x8d0 [ 904.064832][ T23] hub_event+0x1454/0x3640 [ 904.069699][ T23] ? find_held_lock+0x2d/0x110 [ 904.074491][ T23] ? mark_held_locks+0xe0/0xe0 [ 904.080704][ T23] ? hub_port_debounce+0x260/0x260 [ 904.086187][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 904.092042][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 904.097390][ T23] process_one_work+0x92b/0x1530 [ 904.102341][ T23] ? pwq_dec_nr_in_flight+0x310/0x310 [ 904.107978][ T23] worker_thread+0x7ab/0xe20 [ 904.112579][ T23] ? process_one_work+0x1530/0x1530 [ 904.117819][ T23] kthread+0x318/0x420 [ 904.121901][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 904.127356][ T23] ret_from_fork+0x24/0x30 [ 904.131784][ T23] INFO: task kworker/1:2:83 blocked for more than 143 seconds. [ 904.139358][ T23] Not tainted 5.3.0+ #0 [ 904.144020][ T23] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 904.152737][ T23] kworker/1:2 D26096 83 2 0x80004000 [ 904.159114][ T23] Workqueue: usb_hub_wq hub_event [ 904.164118][ T23] Call Trace: [ 904.167449][ T23] ? __schedule+0x6e1/0x15d0 [ 904.172040][ T23] ? __sched_text_start+0x8/0x8 [ 904.176880][ T23] ? lockdep_hardirqs_on+0x379/0x580 [ 904.182192][ T23] schedule+0xca/0x250 [ 904.186264][ T23] schedule_timeout+0x682/0xb20 [ 904.191134][ T23] ? find_held_lock+0x2d/0x110 [ 904.195915][ T23] ? usleep_range+0x160/0x160 [ 904.200625][ T23] ? mark_lock+0xbc/0x1160 [ 904.205039][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 904.210097][ T23] ? mark_held_locks+0x9f/0xe0 [ 904.214867][ T23] ? _raw_spin_unlock_irq+0x24/0x30 [ 904.220102][ T23] wait_for_completion+0x26f/0x3c0 [ 904.225209][ T23] ? wait_for_completion_interruptible+0x420/0x420 [ 904.231734][ T23] ? wake_up_q+0xf0/0xf0 [ 904.235970][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 904.241545][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 904.246829][ T23] kthread_stop+0x10c/0x600 [ 904.251392][ T23] hwrng_unregister+0x190/0x210 [ 904.256268][ T23] chaoskey_disconnect+0x1b2/0x200 [ 904.261417][ T23] usb_unbind_interface+0x1bd/0x8a0 [ 904.266630][ T23] ? usb_autoresume_device+0x60/0x60 [ 904.272847][ T23] device_release_driver_internal+0x42f/0x500 [ 904.278962][ T23] bus_remove_device+0x2dc/0x4a0 [ 904.283908][ T23] device_del+0x420/0xb10 [ 904.288278][ T23] ? __device_links_no_driver+0x240/0x240 [ 904.294026][ T23] ? usb_remove_ep_devs+0x3e/0x80 [ 904.299089][ T23] ? remove_intf_ep_devs+0x13f/0x1d0 [ 904.304374][ T23] usb_disable_device+0x211/0x690 [ 904.309429][ T23] usb_disconnect+0x284/0x8d0 [ 904.314099][ T23] hub_event+0x1454/0x3640 [ 904.318630][ T23] ? find_held_lock+0x2d/0x110 [ 904.323398][ T23] ? mark_held_locks+0xe0/0xe0 [ 904.328204][ T23] ? hub_port_debounce+0x260/0x260 [ 904.333320][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 904.338904][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 904.344283][ T23] process_one_work+0x92b/0x1530 [ 904.349281][ T23] ? pwq_dec_nr_in_flight+0x310/0x310 [ 904.354671][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 904.359740][ T23] worker_thread+0x7ab/0xe20 [ 904.364324][ T23] ? process_one_work+0x1530/0x1530 [ 904.369553][ T23] kthread+0x318/0x420 [ 904.373649][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 904.379061][ T23] ret_from_fork+0x24/0x30 [ 904.383502][ T23] INFO: task kworker/0:1:1738 blocked for more than 144 seconds. [ 904.391239][ T23] Not tainted 5.3.0+ #0 [ 904.395912][ T23] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 904.404619][ T23] kworker/0:1 D26096 1738 2 0x80004000 [ 904.410983][ T23] Workqueue: usb_hub_wq hub_event [ 904.415985][ T23] Call Trace: [ 904.419322][ T23] ? __schedule+0x6e1/0x15d0 [ 904.423909][ T23] ? __sched_text_start+0x8/0x8 [ 904.428965][ T23] ? lockdep_hardirqs_on+0x379/0x580 [ 904.434255][ T23] schedule+0xca/0x250 [ 904.438369][ T23] schedule_timeout+0x682/0xb20 [ 904.443221][ T23] ? find_held_lock+0x2d/0x110 [ 904.448041][ T23] ? usleep_range+0x160/0x160 [ 904.452731][ T23] ? mark_lock+0xbc/0x1160 [ 904.457203][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 904.462228][ T23] ? mark_held_locks+0x9f/0xe0 [ 904.466976][ T23] ? _raw_spin_unlock_irq+0x24/0x30 [ 904.472206][ T23] wait_for_completion+0x26f/0x3c0 [ 904.477373][ T23] ? wait_for_completion_interruptible+0x420/0x420 [ 904.483915][ T23] ? wake_up_q+0xf0/0xf0 [ 904.488180][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 904.493748][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 904.499063][ T23] kthread_stop+0x10c/0x600 [ 904.503565][ T23] hwrng_unregister+0x190/0x210 [ 904.508557][ T23] chaoskey_disconnect+0x1b2/0x200 [ 904.513676][ T23] usb_unbind_interface+0x1bd/0x8a0 [ 904.518904][ T23] ? usb_autoresume_device+0x60/0x60 [ 904.524244][ T23] device_release_driver_internal+0x42f/0x500 [ 904.530443][ T23] bus_remove_device+0x2dc/0x4a0 [ 904.535386][ T23] device_del+0x420/0xb10 [ 904.539756][ T23] ? __device_links_no_driver+0x240/0x240 [ 904.545488][ T23] ? usb_remove_ep_devs+0x3e/0x80 [ 904.550549][ T23] ? remove_intf_ep_devs+0x13f/0x1d0 [ 904.555833][ T23] usb_disable_device+0x211/0x690 [ 904.560892][ T23] usb_disconnect+0x284/0x8d0 [ 904.565588][ T23] hub_event+0x1454/0x3640 [ 904.570059][ T23] ? find_held_lock+0x2d/0x110 [ 904.574841][ T23] ? mark_held_locks+0xe0/0xe0 [ 904.579638][ T23] ? hub_port_debounce+0x260/0x260 [ 904.584758][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 904.590347][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 904.595645][ T23] process_one_work+0x92b/0x1530 [ 904.600630][ T23] ? pwq_dec_nr_in_flight+0x310/0x310 [ 904.606001][ T23] worker_thread+0x7ab/0xe20 [ 904.610622][ T23] ? process_one_work+0x1530/0x1530 [ 904.615829][ T23] kthread+0x318/0x420 [ 904.619923][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 904.625390][ T23] ret_from_fork+0x24/0x30 [ 904.629860][ T23] INFO: task kworker/1:1:1739 blocked for more than 144 seconds. [ 904.637603][ T23] Not tainted 5.3.0+ #0 [ 904.642278][ T23] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 904.651018][ T23] kworker/1:1 D25808 1739 2 0x80004000 [ 904.657399][ T23] Workqueue: usb_hub_wq hub_event [ 904.662407][ T23] Call Trace: [ 904.665693][ T23] ? __schedule+0x6e1/0x15d0 [ 904.670324][ T23] ? __sched_text_start+0x8/0x8 [ 904.675177][ T23] ? lockdep_hardirqs_on+0x379/0x580 [ 904.680578][ T23] schedule+0xca/0x250 [ 904.684668][ T23] schedule_timeout+0x682/0xb20 [ 904.689551][ T23] ? find_held_lock+0x2d/0x110 [ 904.694342][ T23] ? usleep_range+0x160/0x160 [ 904.699062][ T23] ? mark_lock+0xbc/0x1160 [ 904.703476][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 904.708524][ T23] ? mark_held_locks+0x9f/0xe0 [ 904.713288][ T23] ? _raw_spin_unlock_irq+0x24/0x30 [ 904.718521][ T23] wait_for_completion+0x26f/0x3c0 [ 904.723647][ T23] ? wait_for_completion_interruptible+0x420/0x420 [ 904.730186][ T23] ? wake_up_q+0xf0/0xf0 [ 904.734428][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 904.740141][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 904.745431][ T23] kthread_stop+0x10c/0x600 [ 904.749960][ T23] hwrng_unregister+0x190/0x210 [ 904.754813][ T23] chaoskey_disconnect+0x1b2/0x200 [ 904.759984][ T23] usb_unbind_interface+0x1bd/0x8a0 [ 904.765191][ T23] ? usb_autoresume_device+0x60/0x60 [ 904.770507][ T23] device_release_driver_internal+0x42f/0x500 [ 904.776573][ T23] bus_remove_device+0x2dc/0x4a0 [ 904.781543][ T23] device_del+0x420/0xb10 [ 904.785882][ T23] ? __device_links_no_driver+0x240/0x240 [ 904.791755][ T23] ? usb_remove_ep_devs+0x3e/0x80 [ 904.796796][ T23] ? remove_intf_ep_devs+0x13f/0x1d0 [ 904.802132][ T23] usb_disable_device+0x211/0x690 [ 904.807349][ T23] usb_disconnect+0x284/0x8d0 [ 904.812012][ T23] hub_event+0x1454/0x3640 [ 904.816461][ T23] ? find_held_lock+0x2d/0x110 [ 904.821251][ T23] ? mark_held_locks+0xe0/0xe0 [ 904.826011][ T23] ? hub_port_debounce+0x260/0x260 [ 904.831154][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 904.836724][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 904.842039][ T23] process_one_work+0x92b/0x1530 [ 904.846981][ T23] ? pwq_dec_nr_in_flight+0x310/0x310 [ 904.852381][ T23] worker_thread+0x7ab/0xe20 [ 904.856965][ T23] ? process_one_work+0x1530/0x1530 [ 904.862190][ T23] kthread+0x318/0x420 [ 904.866255][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 904.871664][ T23] ret_from_fork+0x24/0x30 [ 904.876231][ T23] [ 904.876231][ T23] Showing all locks held in the system: [ 904.884200][ T23] 5 locks held by kworker/0:0/5: [ 904.889211][ T23] #0: ffff8881d92103a8 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 [ 904.899396][ T23] #1: ffff8881da1c7dd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 [ 904.910327][ T23] #2: ffff8881d5ca7080 (&dev->mutex){....}, at: hub_event+0x17c/0x3640 [ 904.918708][ T23] #3: ffff8881d7491300 (&dev->mutex){....}, at: usb_disconnect+0x91/0x8d0 [ 904.927351][ T23] #4: ffff8881d5b9c590 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 904.937396][ T23] 5 locks held by kworker/1:0/17: [ 904.942786][ T23] #0: ffff8881d92103a8 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 [ 904.952964][ T23] #1: ffff8881da24fdd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 [ 904.963930][ T23] #2: ffff8881d5d16800 (&dev->mutex){....}, at: hub_event+0x17c/0x3640 [ 904.972303][ T23] #3: ffff8881d3355700 (&dev->mutex){....}, at: usb_disconnect+0x91/0x8d0 [ 904.980954][ T23] #4: ffff8881d3356790 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 904.990985][ T23] 1 lock held by khungtaskd/23: [ 904.995905][ T23] #0: ffffffff86cff360 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x269 [ 905.005233][ T23] 5 locks held by kworker/1:2/83: [ 905.010292][ T23] #0: ffff8881d92103a8 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 [ 905.020497][ T23] #1: ffff8881d93dfdd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 [ 905.031215][ T23] #2: ffff8881d5c4bd80 (&dev->mutex){....}, at: hub_event+0x17c/0x3640 [ 905.039611][ T23] #3: ffff8881d96bd700 (&dev->mutex){....}, at: usb_disconnect+0x91/0x8d0 [ 905.048233][ T23] #4: ffff8881d96bac10 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 905.058480][ T23] 5 locks held by kworker/0:2/102: [ 905.063857][ T23] #0: ffff8881d92103a8 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 [ 905.074054][ T23] #1: ffff8881d5eb7dd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 [ 905.084793][ T23] #2: ffff8881d5d12c80 (&dev->mutex){....}, at: hub_event+0x17c/0x3640 [ 905.093153][ T23] #3: ffff8881cdaf5700 (&dev->mutex){....}, at: usb_disconnect+0x91/0x8d0 [ 905.101808][ T23] #4: ffff8881cdaf5f10 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 905.111830][ T23] 1 lock held by rsyslogd/1605: [ 905.116672][ T23] #0: ffff8881d6210ae0 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xe3/0x100 [ 905.125343][ T23] 2 locks held by getty/1695: [ 905.130050][ T23] #0: ffff8881d913c490 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 905.139421][ T23] #1: ffffc900004692e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 905.149033][ T23] 2 locks held by getty/1696: [ 905.153695][ T23] #0: ffff8881d912cd10 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 905.162925][ T23] #1: ffffc900004892e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 905.172589][ T23] 2 locks held by getty/1697: [ 905.177293][ T23] #0: ffff8881d913cd10 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 905.186508][ T23] #1: ffffc9000046d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 905.196123][ T23] 2 locks held by getty/1698: [ 905.200816][ T23] #0: ffff8881d67acd10 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 905.210048][ T23] #1: ffffc9000048d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 905.219630][ T23] 2 locks held by getty/1699: [ 905.224297][ T23] #0: ffff8881d67ac490 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 905.233620][ T23] #1: ffffc900004852e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 905.243253][ T23] 2 locks held by getty/1700: [ 905.247958][ T23] #0: ffff8881d9154d10 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 905.257196][ T23] #1: ffffc900004612e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 905.266749][ T23] 2 locks held by getty/1701: [ 905.271446][ T23] #0: ffff8881d9156690 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 905.280696][ T23] #1: ffffc900004552e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 905.290301][ T23] 5 locks held by kworker/0:1/1738: [ 905.295492][ T23] #0: ffff8881d92103a8 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 [ 905.305680][ T23] #1: ffff8881d290fdd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 [ 905.316412][ T23] #2: ffff8881d5c4f900 (&dev->mutex){....}, at: hub_event+0x17c/0x3640 [ 905.324768][ T23] #3: ffff8881d7491b80 (&dev->mutex){....}, at: usb_disconnect+0x91/0x8d0 [ 905.333398][ T23] #4: ffff8881d5ef7010 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 905.343450][ T23] 5 locks held by kworker/1:1/1739: [ 905.348662][ T23] #0: ffff8881d92103a8 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 [ 905.358845][ T23] #1: ffff8881d3287dd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 [ 905.369575][ T23] #2: ffff8881d5ca3500 (&dev->mutex){....}, at: hub_event+0x17c/0x3640 [ 905.377953][ T23] #3: ffff8881d27c3500 (&dev->mutex){....}, at: usb_disconnect+0x91/0x8d0 [ 905.386718][ T23] #4: ffff8881d27c3d10 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 905.396783][ T23] [ 905.399182][ T23] ============================================= [ 905.399182][ T23] [ 905.407770][ T23] NMI backtrace for cpu 0 [ 905.412122][ T23] CPU: 0 PID: 23 Comm: khungtaskd Not tainted 5.3.0+ #0 [ 905.419229][ T23] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 905.429282][ T23] Call Trace: [ 905.432640][ T23] dump_stack+0xca/0x13e [ 905.436867][ T23] ? irq_force_complete_move.cold+0x1c/0x47 [ 905.442735][ T23] nmi_cpu_backtrace.cold+0x55/0x96 [ 905.447924][ T23] ? lapic_can_unplug_cpu.cold+0x44/0x44 [ 905.453552][ T23] nmi_trigger_cpumask_backtrace+0x1b0/0x1c7 [ 905.459583][ T23] watchdog+0x9a4/0xe50 [ 905.463730][ T23] ? reset_hung_task_detector+0x30/0x30 [ 905.469268][ T23] kthread+0x318/0x420 [ 905.473325][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 905.478689][ T23] ret_from_fork+0x24/0x30 [ 905.483246][ T23] Sending NMI from CPU 0 to CPUs 1: [ 905.488530][ C1] NMI backtrace for cpu 1 skipped: idling at default_idle+0x28/0x2e0 [ 905.489468][ T23] Kernel panic - not syncing: hung_task: blocked tasks [ 905.503429][ T23] CPU: 0 PID: 23 Comm: khungtaskd Not tainted 5.3.0+ #0 [ 905.510340][ T23] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 905.520379][ T23] Call Trace: [ 905.523660][ T23] dump_stack+0xca/0x13e [ 905.527897][ T23] panic+0x2a3/0x6da [ 905.531776][ T23] ? add_taint.cold+0x16/0x16 [ 905.536428][ T23] ? cpumask_next+0x1f/0x30 [ 905.540970][ T23] ? printk_safe_flush+0xd9/0x120 [ 905.545978][ T23] ? watchdog+0x9a4/0xe50 [ 905.550284][ T23] ? nmi_trigger_cpumask_backtrace+0x168/0x1c7 [ 905.556434][ T23] watchdog+0x9b5/0xe50 [ 905.560576][ T23] ? reset_hung_task_detector+0x30/0x30 [ 905.566193][ T23] kthread+0x318/0x420 [ 905.570242][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 905.575590][ T23] ret_from_fork+0x24/0x30 [ 905.580792][ T23] Kernel Offset: disabled [ 905.585111][ T23] Rebooting in 86400 seconds..