[info] Using makefile-style concurrent boot in runlevel 2. [ 14.491818][ 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 '10.128.0.186' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 696.881738][ T83] usb 6-1: new high-speed USB device number 2 using dummy_hcd [ 696.881745][ T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 696.882074][ T17] usb 2-1: new high-speed USB device number 2 using dummy_hcd [ 696.901588][ T1735] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 696.905017][ T1734] usb 3-1: new high-speed USB device number 2 using dummy_hcd [ 696.912109][ T5] usb 4-1: new high-speed USB device number 2 using dummy_hcd [ 697.121659][ T83] usb 6-1: Using ep0 maxpacket: 16 [ 697.151587][ T1734] usb 3-1: Using ep0 maxpacket: 16 [ 697.151592][ T12] usb 1-1: Using ep0 maxpacket: 16 [ 697.162358][ T17] usb 2-1: Using ep0 maxpacket: 16 [ 697.171628][ T1735] usb 5-1: Using ep0 maxpacket: 16 [ 697.176995][ T5] usb 4-1: Using ep0 maxpacket: 16 [ 697.241845][ T83] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 697.251877][ T83] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 697.260920][ T83] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 697.270615][ T83] usb 6-1: config 0 descriptor?? [ 697.274152][ T12] usb 1-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 697.285506][ T12] usb 1-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 697.294609][ T12] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 697.302038][ T1729] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 697.302737][ T1735] usb 5-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 697.311686][ T17] usb 2-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 697.319834][ T1735] usb 5-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 697.329680][ T17] usb 2-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 697.338648][ T1735] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 697.338712][ T5] usb 4-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 697.347677][ T17] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 697.355658][ T5] usb 4-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 697.365558][ T1734] usb 3-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 697.373471][ T5] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 697.375164][ T12] usb 1-1: config 0 descriptor?? [ 697.382532][ T1734] usb 3-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 697.382548][ T1734] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 697.407452][ T1734] usb 3-1: config 0 descriptor?? [ 697.422002][ T1735] usb 5-1: config 0 descriptor?? [ 697.424414][ T17] usb 2-1: config 0 descriptor?? [ 697.427829][ T5] usb 4-1: config 0 descriptor?? [ 697.433267][ T1724] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 697.453059][ T1732] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 697.460557][ T1733] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 697.463206][ T1731] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 697.468435][ T1730] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 697.480730][ T1735] chaoskey 5-1:0.0: Unable to register with hwrng [ 697.489638][ T1734] chaoskey 3-1:0.0: Unable to register with hwrng [ 697.500378][ T17] chaoskey 2-1:0.0: Unable to register with hwrng [ 697.507008][ T1743] hwrng: no data available [ 697.518942][ T12] chaoskey 1-1:0.0: Unable to register with hwrng [ 697.526846][ T5] chaoskey 4-1:0.0: Unable to register with hwrng executing program [ 697.575594][ T12] usb 6-1: USB disconnect, device number 2 executing program executing program executing program executing program executing program [ 697.686494][ T5] usb 5-1: USB disconnect, device number 2 [ 697.686512][ T17] usb 3-1: USB disconnect, device number 2 [ 697.699742][ T1735] usb 2-1: USB disconnect, device number 2 [ 697.714023][ T1738] usb 1-1: USB disconnect, device number 2 [ 697.729402][ T1734] usb 4-1: USB disconnect, device number 2 [ 698.051617][ T1735] usb 2-1: new high-speed USB device number 3 using dummy_hcd [ 698.061770][ T17] usb 3-1: new high-speed USB device number 3 using dummy_hcd [ 698.071701][ T1738] usb 1-1: new high-speed USB device number 3 using dummy_hcd [ 698.091678][ T1734] usb 4-1: new high-speed USB device number 3 using dummy_hcd [ 698.091729][ T5] usb 5-1: new high-speed USB device number 3 using dummy_hcd [ 698.301607][ T1735] usb 2-1: Using ep0 maxpacket: 16 [ 698.311730][ T1738] usb 1-1: Using ep0 maxpacket: 16 [ 698.321588][ T17] usb 3-1: Using ep0 maxpacket: 16 [ 698.341640][ T1734] usb 4-1: Using ep0 maxpacket: 16 [ 698.341689][ T5] usb 5-1: Using ep0 maxpacket: 16 [ 698.431761][ T1735] usb 2-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 698.441684][ T1735] usb 2-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 698.450692][ T1735] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 698.451713][ T17] usb 3-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 698.458751][ T1738] usb 1-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 698.468585][ T17] usb 3-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 698.478336][ T1738] usb 1-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 698.487366][ T17] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 698.496383][ T1738] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 698.505154][ T1734] usb 4-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 698.517032][ T1735] usb 2-1: config 0 descriptor?? [ 698.522208][ T1734] usb 4-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 698.522227][ T1734] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 698.531299][ T1738] usb 1-1: config 0 descriptor?? [ 698.542160][ T1734] usb 4-1: config 0 descriptor?? [ 698.545521][ T1751] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 698.550885][ T17] usb 3-1: config 0 descriptor?? [ 698.558113][ T5] usb 5-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 698.562934][ T1755] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 698.567667][ T5] usb 5-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 698.594940][ T5] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 698.603240][ T1752] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 698.614269][ T1735] chaoskey 2-1:0.0: Unable to register with hwrng [ 698.621713][ T17] chaoskey 3-1:0.0: Unable to register with hwrng [ 698.621774][ T5] usb 5-1: config 0 descriptor?? [ 698.633221][ T1754] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 698.651783][ T1750] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 698.663236][ T1738] chaoskey 1-1:0.0: Unable to register with hwrng [ 698.676509][ T5] chaoskey 5-1:0.0: Unable to register with hwrng executing program executing program executing program [ 698.798911][ T5] usb 4-1: USB disconnect, device number 3 [ 698.804283][ T17] usb 2-1: USB disconnect, device number 3 [ 698.814231][ T1738] usb 3-1: USB disconnect, device number 3 executing program executing program [ 698.855106][ T1734] usb 1-1: USB disconnect, device number 3 [ 698.886625][ T1735] usb 5-1: USB disconnect, device number 3 [ 699.161579][ T17] usb 2-1: new high-speed USB device number 4 using dummy_hcd [ 699.181594][ T1738] usb 3-1: new high-speed USB device number 4 using dummy_hcd [ 699.211598][ T1734] usb 1-1: new high-speed USB device number 4 using dummy_hcd [ 699.241589][ T1735] usb 5-1: new high-speed USB device number 4 using dummy_hcd [ 699.401585][ T17] usb 2-1: Using ep0 maxpacket: 16 [ 699.421627][ T1738] usb 3-1: Using ep0 maxpacket: 16 [ 699.462189][ T1734] usb 1-1: Using ep0 maxpacket: 16 [ 699.481662][ T1735] usb 5-1: Using ep0 maxpacket: 16 [ 699.521800][ T17] usb 2-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 699.531772][ T17] usb 2-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 699.540801][ T17] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 699.549885][ T17] usb 2-1: config 0 descriptor?? [ 699.553561][ T1738] usb 3-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 699.564714][ T1738] usb 3-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 699.573945][ T1738] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 699.581733][ T1762] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 699.583111][ T1738] usb 3-1: config 0 descriptor?? [ 699.591839][ T1734] usb 1-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 699.604166][ T1734] usb 1-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 699.611700][ T1763] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 699.613213][ T1734] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 699.621754][ T1735] usb 5-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 699.635451][ T1734] usb 1-1: config 0 descriptor?? [ 699.638419][ T1735] usb 5-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 699.652613][ T1735] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 699.663128][ T1764] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 699.670819][ T1738] chaoskey 3-1:0.0: Unable to register with hwrng [ 699.677676][ T1735] usb 5-1: config 0 descriptor?? [ 699.693704][ T1734] chaoskey 1-1:0.0: Unable to register with hwrng [ 699.701784][ T1765] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 699.723908][ T1735] chaoskey 5-1:0.0: Unable to register with hwrng executing program [ 699.805258][ T1734] usb 2-1: USB disconnect, device number 4 executing program [ 699.849218][ T17] usb 3-1: USB disconnect, device number 4 executing program executing program [ 699.893029][ T1735] usb 1-1: USB disconnect, device number 4 [ 699.923024][ T83] usb 5-1: USB disconnect, device number 4 [ 700.251604][ T17] usb 3-1: new high-speed USB device number 5 using dummy_hcd [ 700.251612][ T1735] usb 1-1: new high-speed USB device number 5 using dummy_hcd [ 700.331582][ T83] usb 5-1: new high-speed USB device number 5 using dummy_hcd [ 700.491624][ T1735] usb 1-1: Using ep0 maxpacket: 16 [ 700.501591][ T17] usb 3-1: Using ep0 maxpacket: 16 [ 700.571591][ T83] usb 5-1: Using ep0 maxpacket: 16 [ 700.611809][ T1735] usb 1-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 700.621686][ T17] usb 3-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 700.621710][ T17] usb 3-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 700.631485][ T1735] usb 1-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 700.631499][ T1735] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 700.634881][ T1735] usb 1-1: config 0 descriptor?? [ 700.640627][ T17] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 700.645098][ T17] usb 3-1: config 0 descriptor?? [ 700.671631][ T1772] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 700.691716][ T1771] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 700.711776][ T83] usb 5-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 700.721746][ T83] usb 5-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 700.730762][ T83] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 700.741022][ T17] chaoskey 3-1:0.0: Unable to register with hwrng [ 700.749537][ T83] usb 5-1: config 0 descriptor?? [ 700.771673][ T1773] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 700.793892][ T83] chaoskey 5-1:0.0: Unable to register with hwrng executing program executing program [ 700.902992][ T83] usb 1-1: USB disconnect, device number 5 [ 700.922943][ T1735] usb 3-1: USB disconnect, device number 5 executing program [ 700.993144][ T1738] usb 5-1: USB disconnect, device number 5 [ 701.291583][ T1735] usb 3-1: new high-speed USB device number 6 using dummy_hcd [ 701.351582][ T1738] usb 5-1: new high-speed USB device number 6 using dummy_hcd [ 701.531595][ T1735] usb 3-1: Using ep0 maxpacket: 16 [ 701.591649][ T1738] usb 5-1: Using ep0 maxpacket: 16 [ 701.651713][ T1735] usb 3-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 701.661804][ T1735] usb 3-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 701.670860][ T1735] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 701.679826][ T1735] usb 3-1: config 0 descriptor?? [ 701.701653][ T1778] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 701.711717][ T1738] usb 5-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 701.721693][ T1738] usb 5-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 701.730765][ T1738] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 701.741761][ T1738] usb 5-1: config 0 descriptor?? [ 701.761643][ T1779] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 701.784091][ T1738] chaoskey 5-1:0.0: Unable to register with hwrng executing program [ 701.922897][ T17] usb 3-1: USB disconnect, device number 6 executing program [ 701.992543][ T1738] usb 5-1: USB disconnect, device number 6 [ 702.341602][ T1738] usb 5-1: new high-speed USB device number 7 using dummy_hcd executing program [ 702.581610][ T1738] usb 5-1: Using ep0 maxpacket: 16 [ 702.701766][ T1738] usb 5-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 702.711829][ T1738] usb 5-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 702.720847][ T1738] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 702.729822][ T1738] usb 5-1: config 0 descriptor?? [ 702.751682][ T1783] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 executing program [ 702.972696][ T1739] usb 5-1: USB disconnect, device number 7 executing program executing program executing program executing program executing program executing program [ 707.941581][ T12] usb 6-1: new high-speed USB device number 3 using dummy_hcd [ 708.181576][ T12] usb 6-1: Using ep0 maxpacket: 16 [ 708.301668][ T12] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 708.311806][ T12] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 708.320828][ T12] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 708.329775][ T12] usb 6-1: config 0 descriptor?? [ 708.351666][ T1792] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 708.411963][ T1795] hwrng: no data available executing program [ 708.574704][ T12] usb 6-1: USB disconnect, device number 3 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 [ 719.091592][ T12] usb 6-1: new high-speed USB device number 4 using dummy_hcd [ 719.331576][ T12] usb 6-1: Using ep0 maxpacket: 16 [ 719.451672][ T12] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 719.461614][ T12] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 719.470752][ T12] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 719.479960][ T12] usb 6-1: config 0 descriptor?? [ 719.511698][ T1808] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 719.571746][ T1811] hwrng: no data available executing program [ 719.732956][ T1786] usb 6-1: 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 [ 730.121610][ T1786] usb 6-1: new high-speed USB device number 5 using dummy_hcd [ 730.361592][ T1786] usb 6-1: Using ep0 maxpacket: 16 [ 730.481667][ T1786] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 730.491609][ T1786] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 730.500755][ T1786] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 730.510527][ T1786] usb 6-1: config 0 descriptor?? [ 730.531693][ T1825] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 730.611840][ T1828] hwrng: no data available executing program [ 730.763104][ T12] usb 6-1: USB disconnect, device number 5 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 [ 741.491598][ T12] usb 6-1: new high-speed USB device number 6 using dummy_hcd [ 741.731578][ T12] usb 6-1: Using ep0 maxpacket: 16 [ 741.851659][ T12] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 741.861796][ T12] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 741.870820][ T12] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 741.879804][ T12] usb 6-1: config 0 descriptor?? executing program [ 741.901666][ T1841] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 741.961667][ T1845] hwrng: no data available executing program [ 742.122754][ T1786] usb 6-1: USB disconnect, device number 6 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 752.481598][ T1786] usb 6-1: new high-speed USB device number 7 using dummy_hcd [ 752.721575][ T1786] usb 6-1: Using ep0 maxpacket: 16 [ 752.841725][ T1786] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 752.851637][ T1786] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 752.860827][ T1786] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 752.869764][ T1786] usb 6-1: config 0 descriptor?? [ 752.891646][ T1858] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 executing program [ 752.971623][ T1860] hwrng: no data available executing program [ 753.124539][ T1786] usb 6-1: USB disconnect, device number 7 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 [ 763.891605][ T1786] usb 6-1: new high-speed USB device number 8 using dummy_hcd [ 764.131577][ T1786] usb 6-1: Using ep0 maxpacket: 16 [ 764.251697][ T1786] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 764.261700][ T1786] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 764.270718][ T1786] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 764.280127][ T1786] usb 6-1: config 0 descriptor?? [ 764.301656][ T1874] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 764.371704][ T1877] hwrng: no data available executing program [ 764.522940][ T12] usb 6-1: USB disconnect, device number 8 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 [ 774.881594][ T12] usb 6-1: new high-speed USB device number 9 using dummy_hcd [ 775.121576][ T12] usb 6-1: Using ep0 maxpacket: 16 [ 775.241649][ T12] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 775.251728][ T12] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 775.260735][ T12] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 775.269737][ T12] usb 6-1: config 0 descriptor?? [ 775.291675][ T1890] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 775.351675][ T1893] hwrng: no data available executing program [ 775.512728][ T12] usb 6-1: USB disconnect, device number 9 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 [ 786.291579][ T12] usb 6-1: new high-speed USB device number 10 using dummy_hcd [ 786.531575][ T12] usb 6-1: Using ep0 maxpacket: 16 [ 786.651705][ T12] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 786.661614][ T12] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 786.670629][ T12] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 786.679422][ T12] usb 6-1: config 0 descriptor?? [ 786.701703][ T1906] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 786.761657][ T1909] hwrng: no data available executing program executing program [ 786.922918][ T1786] usb 6-1: USB disconnect, device number 10 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 797.281592][ T1786] usb 6-1: new high-speed USB device number 11 using dummy_hcd [ 797.521579][ T1786] usb 6-1: Using ep0 maxpacket: 16 [ 797.641652][ T1786] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 797.651599][ T1786] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 797.660614][ T1786] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 797.669490][ T1786] usb 6-1: config 0 descriptor?? [ 797.691658][ T1922] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 797.751754][ T1925] hwrng: no data available executing program [ 797.914467][ T1786] usb 6-1: USB disconnect, device number 11 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 [ 808.701583][ T1786] usb 6-1: new high-speed USB device number 12 using dummy_hcd executing program [ 808.941584][ T1786] usb 6-1: Using ep0 maxpacket: 16 [ 809.061699][ T1786] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 809.071698][ T1786] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 809.080716][ T1786] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 809.090051][ T1786] usb 6-1: config 0 descriptor?? [ 809.111665][ T1938] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 809.171747][ T1942] hwrng: no data available executing program [ 809.332790][ T12] usb 6-1: USB disconnect, device number 12 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 819.721633][ T12] usb 6-1: new high-speed USB device number 13 using dummy_hcd executing program [ 819.961591][ T12] usb 6-1: Using ep0 maxpacket: 16 [ 820.081712][ T12] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 820.091664][ T12] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 820.100670][ T12] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 820.109713][ T12] usb 6-1: config 0 descriptor?? [ 820.131669][ T1955] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 820.192338][ T1958] hwrng: no data available executing program [ 820.352838][ T1786] usb 6-1: USB disconnect, device number 13 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 [ 831.091640][ T1786] usb 6-1: new high-speed USB device number 14 using dummy_hcd [ 831.331572][ T1786] usb 6-1: Using ep0 maxpacket: 16 [ 831.451665][ T1786] usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 73 [ 831.461596][ T1786] usb 6-1: New USB device found, idVendor=1d50, idProduct=60c6, bcdDevice=1a.d7 [ 831.470647][ T1786] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 831.479638][ T1786] usb 6-1: config 0 descriptor?? [ 831.501667][ T1971] raw: raw_ioctl_ep_enable: fail, usb_ep_enable returned -22 [ 831.581735][ T1974] hwrng: no data available executing program [ 831.732704][ T12] usb 6-1: USB disconnect, device number 14 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 [ 842.121579][ T12] usb 6-1: new high-speed USB device number 15 using dummy_hcd [ 842.261567][ T23] INFO: task kworker/0:0:5 blocked for more than 143 seconds. [ 842.269158][ T23] Not tainted 5.4.0-rc6-syzkaller #0 [ 842.274996][ T23] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 842.283681][ T23] kworker/0:0 D26016 5 2 0x80004000 [ 842.290127][ T23] Workqueue: usb_hub_wq hub_event [ 842.295221][ T23] Call Trace: [ 842.298570][ T23] ? __schedule+0x898/0x1ca0 [ 842.303196][ T23] ? __sched_text_start+0x8/0x8 [ 842.308045][ T23] ? lockdep_hardirqs_on+0x382/0x580 [ 842.313380][ T23] schedule+0xca/0x250 [ 842.317449][ T23] schedule_timeout+0x682/0xb20 [ 842.322329][ T23] ? find_held_lock+0x2d/0x110 [ 842.327094][ T23] ? usleep_range+0x160/0x160 [ 842.331800][ T23] ? mark_lock+0xbc/0x1160 [ 842.336262][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 842.341266][ T23] ? mark_held_locks+0x9f/0xe0 [ 842.346083][ T23] ? _raw_spin_unlock_irq+0x24/0x30 [ 842.351375][ T23] wait_for_completion+0x26f/0x3c0 [ 842.356528][ T23] ? wait_for_completion_interruptible+0x420/0x420 [ 842.363064][ T23] ? wake_up_q+0xf0/0xf0 [ 842.367292][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 842.372857][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 842.378176][ T23] kthread_stop+0x10c/0x610 [ 842.382752][ T23] hwrng_unregister+0x190/0x210 [ 842.387676][ T23] chaoskey_disconnect+0x1b2/0x200 [ 842.392854][ T23] usb_unbind_interface+0x1bd/0x8a0 [ 842.398062][ T23] ? usb_autoresume_device+0x60/0x60 [ 842.403460][ T23] device_release_driver_internal+0x42f/0x500 [ 842.409533][ T23] bus_remove_device+0x2dc/0x4a0 [ 842.414501][ T23] device_del+0x420/0xb20 [ 842.418845][ T23] ? __device_link_del+0x2f0/0x2f0 [ 842.424035][ T23] ? usb_remove_ep_devs+0x3e/0x80 [ 842.429059][ T23] ? remove_intf_ep_devs+0x13f/0x1d0 [ 842.434376][ T23] usb_disable_device+0x211/0x690 [ 842.439449][ T23] usb_disconnect+0x284/0x8d0 [ 842.444149][ T23] hub_event+0x16f2/0x3800 [ 842.448556][ T23] ? hub_port_debounce+0x260/0x260 [ 842.453773][ T23] ? find_held_lock+0x2d/0x110 [ 842.458529][ T23] ? mark_held_locks+0xe0/0xe0 [ 842.463345][ T23] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 842.468884][ T23] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 842.474191][ T23] process_one_work+0x92b/0x1530 [ 842.479131][ T23] ? pwq_dec_nr_in_flight+0x310/0x310 [ 842.484532][ T23] ? do_raw_spin_lock+0x11a/0x280 [ 842.489560][ T23] worker_thread+0x96/0xe20 [ 842.494085][ T23] ? process_one_work+0x1530/0x1530 [ 842.499291][ T23] kthread+0x318/0x420 [ 842.503382][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 842.508758][ T23] ret_from_fork+0x24/0x30 [ 842.513329][ T23] [ 842.513329][ T23] Showing all locks held in the system: [ 842.521045][ T23] 5 locks held by kworker/0:0/5: [ 842.525995][ T23] #0: ffff8881d8efd528 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 [ 842.536221][ T23] #1: ffff8881da1dfdd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 [ 842.546917][ T23] #2: ffff8881d516f200 (&dev->mutex){....}, at: hub_event+0x1b2/0x3800 [ 842.555278][ T23] #3: ffff8881cf6c4200 (&dev->mutex){....}, at: usb_disconnect+0x91/0x8d0 [ 842.563911][ T23] #4: ffff8881cf6c5190 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 842.573939][ T23] 5 locks held by kworker/0:1/12: [ 842.578947][ T23] 5 locks held by kworker/1:0/17: [ 842.583982][ T23] #0: ffff8881d8efd528 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 [ 842.594190][ T23] #1: ffff8881da267dd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 [ 842.605051][ T23] #2: ffff8881d5168200 (&dev->mutex){....}, at: hub_event+0x1b2/0x3800 [ 842.613420][ T23] #3: ffff8881cdc82200 (&dev->mutex){....}, at: usb_disconnect+0x91/0x8d0 [ 842.622072][ T23] #4: ffff8881cdc84190 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 842.632116][ T23] 1 lock held by khungtaskd/23: [ 842.636953][ T23] #0: ffffffff86cfe8a0 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x269 [ 842.646291][ T23] 5 locks held by kworker/1:2/83: [ 842.651307][ T23] #0: ffff8881d8efd528 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 [ 842.661540][ T23] #1: ffff8881d89efdd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 [ 842.672251][ T23] #2: ffff8881d50e3200 (&dev->mutex){....}, at: hub_event+0x1b2/0x3800 [ 842.680586][ T23] #3: ffff8881ce29d200 (&dev->mutex){....}, at: usb_disconnect+0x91/0x8d0 [ 842.689239][ T23] #4: ffff8881ce29e190 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 842.699272][ T23] 1 lock held by rsyslogd/1601: [ 842.704138][ T23] 2 locks held by getty/1691: [ 842.708799][ T23] #0: ffff8881d1997090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 842.718020][ T23] #1: ffffc9000046b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 842.727603][ T23] 2 locks held by getty/1692: [ 842.732302][ T23] #0: ffff8881d14ab090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 842.741548][ T23] #1: ffffc9000048f2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 842.751109][ T23] 2 locks held by getty/1693: [ 842.755819][ T23] #0: ffff8881d2ee5090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 842.765083][ T23] #1: ffffc900004872e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 842.774670][ T23] 2 locks held by getty/1694: [ 842.779337][ T23] #0: ffff8881d1b74090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 842.788560][ T23] #1: ffffc9000047f2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 842.798151][ T23] 2 locks held by getty/1695: [ 842.802844][ T23] #0: ffff8881d14aa090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 842.812083][ T23] #1: ffffc9000048b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 842.821674][ T23] 2 locks held by getty/1696: [ 842.826337][ T23] #0: ffff8881d1b73090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 842.835571][ T23] #1: ffffc9000047b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 842.845152][ T23] 2 locks held by getty/1697: [ 842.849815][ T23] #0: ffff8881d1990090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 842.859056][ T23] #1: ffffc9000045d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x223/0x1ae0 [ 842.868646][ T23] 5 locks held by kworker/1:1/1734: [ 842.873864][ T23] #0: ffff8881d8efd528 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 [ 842.884069][ T23] #1: ffff8881d91ffdd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 [ 842.894774][ T23] #2: ffff8881d5141200 (&dev->mutex){....}, at: hub_event+0x1b2/0x3800 [ 842.903141][ T23] #3: ffff8881cec95200 (&dev->mutex){....}, at: usb_disconnect+0x91/0x8d0 [ 842.911766][ T23] #4: ffff8881cec97190 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 842.921798][ T23] 5 locks held by kworker/1:4/1739: [ 842.927003][ T23] #0: ffff8881d8efd528 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x827/0x1530 [ 842.937179][ T23] #1: ffff8881cf597dd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85b/0x1530 [ 842.947889][ T23] #2: ffff8881d519e200 (&dev->mutex){....}, at: hub_event+0x1b2/0x3800 [ 842.956247][ T23] #3: ffff8881cd884200 (&dev->mutex){....}, at: usb_disconnect+0x91/0x8d0 [ 842.964864][ T23] #4: ffff8881cd885190 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 842.974878][ T23] [ 842.977197][ T23] ============================================= [ 842.977197][ T23] [ 842.985620][ T23] NMI backtrace for cpu 0 [ 842.989947][ T23] CPU: 0 PID: 23 Comm: khungtaskd Not tainted 5.4.0-rc6-syzkaller #0 [ 842.997987][ T23] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 843.008124][ T23] Call Trace: [ 843.011469][ T23] dump_stack+0xca/0x13e [ 843.015697][ T23] ? x86_vector_activate.cold+0x80/0xdd [ 843.021222][ T23] nmi_cpu_backtrace.cold+0x55/0x96 [ 843.026408][ T23] ? lapic_can_unplug_cpu.cold+0x3b/0x3b [ 843.032040][ T23] nmi_trigger_cpumask_backtrace+0x1b0/0x1c7 [ 843.038016][ T23] watchdog+0x9a4/0xe50 [ 843.042157][ T23] ? reset_hung_task_detector+0x30/0x30 [ 843.047681][ T23] kthread+0x318/0x420 [ 843.051729][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 843.057095][ T23] ret_from_fork+0x24/0x30 executing program [ 843.061558][ T23] Sending NMI from CPU 0 to CPUs 1: [ 843.067424][ C1] NMI backtrace for cpu 1 [ 843.067429][ C1] CPU: 1 PID: 1719 Comm: sshd Not tainted 5.4.0-rc6-syzkaller #0 [ 843.067433][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 843.067436][ C1] RIP: 0010:ipt_do_table+0x259/0x1280 [ 843.067445][ C1] Code: c1 ea 03 83 e0 0f c1 e0 02 89 84 24 e4 00 00 00 48 b8 00 00 00 00 00 fc ff df 0f b6 04 02 84 c0 74 08 3c 03 0f 8e a0 0e 00 00 <44> 89 e1 bb 01 00 00 00 31 ff d3 e3 23 5d 10 89 de e8 a1 2e 55 fc [ 843.067448][ C1] RSP: 0018:ffff8881c65af350 EFLAGS: 00000246 [ 843.067453][ C1] RAX: 0000000000000000 RBX: ffff8881c65af5a0 RCX: ffff8881ca5ca414 [ 843.067462][ C1] RDX: 1ffff1103aa41f92 RSI: ffffffff84e8f869 RDI: ffff8881d520fc90 [ 843.067466][ C1] RBP: ffff8881d520fc80 R08: ffff8881d07fc800 R09: ffffed103b66658d [ 843.067470][ C1] R10: ffffed103b66658c R11: ffff8881db332c63 R12: 0000000000000003 [ 843.067474][ C1] R13: ffff8881d54b2000 R14: ffff8881c65af5c0 R15: ffff8881c922c8dc [ 843.067478][ C1] FS: 00007f6fd12b57c0(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 [ 843.067481][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 843.067485][ C1] CR2: 00007ff9e84d4000 CR3: 00000001d2360000 CR4: 00000000001406e0 [ 843.067488][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 843.067492][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 843.067494][ C1] Call Trace: [ 843.067496][ C1] ? mark_lock+0xbc/0x1160 [ 843.067499][ C1] ? __lock_acquire+0x80b/0x3b60 [ 843.067501][ C1] ? icmp_checkentry+0x90/0x90 [ 843.067505][ C1] ? __read_once_size_nocheck.constprop.0+0x10/0x10 [ 843.067508][ C1] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 843.067510][ C1] ? __module_text_address+0xe/0x140 [ 843.067513][ C1] ? mark_held_locks+0xe0/0xe0 [ 843.067515][ C1] iptable_mangle_hook+0x21f/0x510 [ 843.067518][ C1] nf_hook_slow+0xba/0x1e0 [ 843.067520][ C1] __ip_local_out+0x30f/0x5e0 [ 843.067523][ C1] ? ip_finish_output+0x30/0x30 [ 843.067525][ C1] ? ip_append_data.part.0+0x180/0x180 [ 843.067528][ C1] ip_local_out+0x26/0x1a0 [ 843.067530][ C1] __ip_queue_xmit+0x85c/0x1c20 [ 843.067533][ C1] ? __tcp_select_window+0x32c/0x8a0 [ 843.067536][ C1] __tcp_transmit_skb+0x1940/0x34f0 [ 843.067538][ C1] ? __tcp_select_window+0x8a0/0x8a0 [ 843.067541][ C1] ? mark_held_locks+0x9f/0xe0 [ 843.067543][ C1] ? lockdep_hardirqs_on+0x382/0x580 [ 843.067546][ C1] tcp_write_xmit+0xe48/0x57d0 [ 843.067549][ C1] __tcp_push_pending_frames+0xaa/0x330 [ 843.067551][ C1] tcp_push+0x468/0x6e0 [ 843.067553][ C1] ? tcp_tx_timestamp+0x5b/0x2d0 [ 843.067556][ C1] tcp_sendmsg_locked+0x273a/0x3020 [ 843.067559][ C1] ? tcp_sendpage+0x60/0x60 [ 843.067561][ C1] ? lock_acquire+0x127/0x320 [ 843.067564][ C1] ? __local_bh_enable_ip+0x11b/0x190 [ 843.067566][ C1] tcp_sendmsg+0x2b/0x40 [ 843.067568][ C1] inet_sendmsg+0x99/0xe0 [ 843.067571][ C1] ? inet_send_prepare+0x4e0/0x4e0 [ 843.067573][ C1] sock_sendmsg+0xcf/0x120 [ 843.067576][ C1] sock_write_iter+0x235/0x360 [ 843.067578][ C1] ? sock_sendmsg+0x120/0x120 [ 843.067580][ C1] new_sync_write+0x420/0x650 [ 843.067583][ C1] ? new_sync_read+0x6d0/0x6d0 [ 843.067586][ C1] ? _raw_spin_unlock_irq+0x24/0x30 [ 843.067588][ C1] ? _raw_spin_unlock_irq+0x24/0x30 [ 843.067591][ C1] ? __set_current_blocked+0xcc/0x110 [ 843.067594][ C1] ? security_file_permission+0x8a/0x370 [ 843.067596][ C1] __vfs_write+0xc9/0x100 [ 843.067598][ C1] vfs_write+0x262/0x5c0 [ 843.067601][ C1] ksys_write+0x127/0x250 [ 843.067603][ C1] ? __ia32_sys_read+0xb0/0xb0 [ 843.067606][ C1] ? trace_hardirqs_off_caller+0x55/0x1e0 [ 843.067608][ C1] do_syscall_64+0xb7/0x580 [ 843.067611][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 843.067614][ C1] RIP: 0033:0x7f6fcf650370 [ 843.067622][ C1] Code: 73 01 c3 48 8b 0d c8 4a 2b 00 31 d2 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 83 3d 85 a2 2b 00 00 75 10 b8 01 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 0e 8a 01 00 48 89 04 24 [ 843.067624][ C1] RSP: 002b:00007fff5d86cac8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 843.067631][ C1] RAX: ffffffffffffffda RBX: 0000000000000038 RCX: 00007f6fcf650370 [ 843.067635][ C1] RDX: 0000000000000038 RSI: 0000560719a27480 RDI: 0000000000000003 [ 843.067638][ C1] RBP: 0000560719a27480 R08: 0000000000000001 R09: 0101010101010101 [ 843.067642][ C1] R10: 0000000000000008 R11: 0000000000000246 R12: 00007fff5d86cb2c [ 843.067646][ C1] R13: 0000560718311fb4 R14: 0000000000000028 R15: 0000560718313ca0 [ 843.067766][ T23] Kernel panic - not syncing: hung_task: blocked tasks [ 843.508652][ T23] CPU: 0 PID: 23 Comm: khungtaskd Not tainted 5.4.0-rc6-syzkaller #0 [ 843.516707][ T23] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 843.526741][ T23] Call Trace: [ 843.530015][ T23] dump_stack+0xca/0x13e [ 843.534256][ T23] panic+0x2aa/0x6e1 [ 843.538131][ T23] ? add_taint.cold+0x16/0x16 [ 843.542785][ T23] ? cpumask_next+0x1f/0x30 [ 843.547275][ T23] ? printk_safe_flush+0xd9/0x120 [ 843.552281][ T23] ? watchdog+0x9a4/0xe50 [ 843.556588][ T23] ? nmi_trigger_cpumask_backtrace+0x168/0x1c7 [ 843.562717][ T23] watchdog+0x9b5/0xe50 [ 843.566861][ T23] ? reset_hung_task_detector+0x30/0x30 [ 843.572401][ T23] kthread+0x318/0x420 [ 843.576452][ T23] ? kthread_create_on_node+0xf0/0xf0 [ 843.581801][ T23] ret_from_fork+0x24/0x30 [ 843.586985][ T23] Kernel Offset: disabled [ 843.591320][ T23] Rebooting in 86400 seconds..