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 '10.128.10.60' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 797.037520][ T83] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 797.037529][ T95] usb 4-1: new high-speed USB device number 2 using dummy_hcd [ 797.047568][ T17] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 797.053108][ T1815] usb 2-1: new high-speed USB device number 2 using dummy_hcd [ 797.067996][ T1812] usb 6-1: new high-speed USB device number 2 using dummy_hcd [ 797.075552][ T103] usb 3-1: new high-speed USB device number 2 using dummy_hcd [ 797.127709][ T83] usb 1-1: Using ep0 maxpacket: 8 [ 797.147482][ T17] usb 5-1: Using ep0 maxpacket: 8 [ 797.167502][ T1812] usb 6-1: Using ep0 maxpacket: 8 [ 797.172672][ T103] usb 3-1: Using ep0 maxpacket: 8 [ 797.177785][ T95] usb 4-1: Using ep0 maxpacket: 8 [ 797.182954][ T1815] usb 2-1: Using ep0 maxpacket: 8 [ 797.257829][ T83] usb 1-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 797.267038][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 797.276637][ T83] usb 1-1: config 0 descriptor?? [ 797.281975][ T17] usb 5-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 797.291098][ T17] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 797.297583][ T103] usb 3-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 797.300658][ T17] usb 5-1: config 0 descriptor?? [ 797.308286][ T103] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 797.321456][ T1812] usb 6-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 797.330591][ T1812] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 797.338728][ T95] usb 4-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 797.347823][ T95] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 797.356564][ T1815] usb 2-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 797.365683][ T1815] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 797.375428][ T1812] usb 6-1: config 0 descriptor?? [ 797.381085][ T95] usb 4-1: config 0 descriptor?? [ 797.387208][ T17] chaoskey 5-1:0.0: Unable to register with hwrng [ 797.392690][ T1815] usb 2-1: config 0 descriptor?? [ 797.401843][ T103] usb 3-1: config 0 descriptor?? [ 797.419339][ T95] chaoskey 4-1:0.0: Unable to register with hwrng [ 797.432217][ T1812] chaoskey 6-1:0.0: Unable to register with hwrng [ 797.450955][ T103] chaoskey 3-1:0.0: Unable to register with hwrng [ 797.479564][ T1815] chaoskey 2-1:0.0: Unable to register with hwrng executing program executing program [ 797.560920][ T83] usb 1-1: USB disconnect, device number 2 [ 797.567884][ T17] usb 5-1: USB disconnect, device number 2 [ 797.587545][ T1821] hwrng: no data available executing program executing program executing program [ 797.618612][ T1815] usb 4-1: USB disconnect, device number 2 [ 797.633043][ T103] usb 6-1: USB disconnect, device number 2 [ 797.648553][ T95] usb 3-1: USB disconnect, device number 2 executing program [ 797.678690][ T1812] usb 2-1: USB disconnect, device number 2 [ 797.927775][ T17] usb 5-1: new high-speed USB device number 3 using dummy_hcd [ 797.987415][ T103] usb 6-1: new high-speed USB device number 3 using dummy_hcd [ 797.994972][ T1815] usb 4-1: new high-speed USB device number 3 using dummy_hcd [ 798.027472][ T17] usb 5-1: Using ep0 maxpacket: 8 [ 798.037353][ T1812] usb 2-1: new high-speed USB device number 3 using dummy_hcd [ 798.067372][ T95] usb 3-1: new high-speed USB device number 3 using dummy_hcd [ 798.097653][ T103] usb 6-1: Using ep0 maxpacket: 8 [ 798.102862][ T1815] usb 4-1: Using ep0 maxpacket: 8 [ 798.127457][ T1812] usb 2-1: Using ep0 maxpacket: 8 [ 798.157463][ T95] usb 3-1: Using ep0 maxpacket: 8 [ 798.167747][ T17] usb 5-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 798.176831][ T17] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 798.185927][ T17] usb 5-1: config 0 descriptor?? [ 798.217478][ T103] usb 6-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 798.226590][ T103] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 798.235008][ T1815] usb 4-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 798.244085][ T1815] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 798.252531][ T1812] usb 2-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 798.261616][ T1812] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 798.270422][ T103] usb 6-1: config 0 descriptor?? [ 798.276346][ T1815] usb 4-1: config 0 descriptor?? [ 798.281802][ T1812] usb 2-1: config 0 descriptor?? [ 798.287547][ T95] usb 3-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 798.296581][ T95] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 798.305638][ T95] usb 3-1: config 0 descriptor?? [ 798.312752][ T103] chaoskey 6-1:0.0: Unable to register with hwrng [ 798.323243][ T1815] chaoskey 4-1:0.0: Unable to register with hwrng [ 798.333502][ T1812] chaoskey 2-1:0.0: Unable to register with hwrng [ 798.359449][ T95] chaoskey 3-1:0.0: Unable to register with hwrng executing program [ 798.458708][ T17] usb 5-1: USB disconnect, device number 3 executing program executing program executing program [ 798.512002][ T1817] usb 6-1: USB disconnect, device number 3 [ 798.521842][ T95] usb 4-1: USB disconnect, device number 3 [ 798.522416][ T1841] usb 2-1: USB disconnect, device number 3 executing program [ 798.559383][ T1845] usb 3-1: USB disconnect, device number 3 [ 798.867360][ T1817] usb 6-1: new high-speed USB device number 4 using dummy_hcd [ 798.917371][ T1845] usb 3-1: new high-speed USB device number 4 using dummy_hcd [ 798.927480][ T1841] usb 2-1: new high-speed USB device number 4 using dummy_hcd [ 798.937366][ T95] usb 4-1: new high-speed USB device number 4 using dummy_hcd [ 798.957434][ T1817] usb 6-1: Using ep0 maxpacket: 8 [ 799.007445][ T1845] usb 3-1: Using ep0 maxpacket: 8 [ 799.017600][ T1841] usb 2-1: Using ep0 maxpacket: 8 [ 799.027428][ T95] usb 4-1: Using ep0 maxpacket: 8 [ 799.077508][ T1817] usb 6-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 799.086644][ T1817] usb 6-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 799.095543][ T1817] usb 6-1: config 0 descriptor?? [ 799.127484][ T1845] usb 3-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 799.136536][ T1845] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 799.144709][ T1841] usb 2-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 799.153838][ T1841] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 799.164669][ T1845] usb 3-1: config 0 descriptor?? [ 799.173880][ T1841] usb 2-1: config 0 descriptor?? [ 799.178939][ T95] usb 4-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 799.178960][ T95] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 799.196644][ T95] usb 4-1: config 0 descriptor?? [ 799.209616][ T1845] chaoskey 3-1:0.0: Unable to register with hwrng [ 799.229543][ T1841] chaoskey 2-1:0.0: Unable to register with hwrng [ 799.249527][ T95] chaoskey 4-1:0.0: Unable to register with hwrng executing program [ 799.358710][ T1817] usb 6-1: USB disconnect, device number 4 executing program executing program executing program [ 799.408890][ T1841] usb 3-1: USB disconnect, device number 4 [ 799.428677][ T95] usb 2-1: USB disconnect, device number 4 [ 799.448564][ T1845] usb 4-1: USB disconnect, device number 4 [ 799.777349][ T1841] usb 3-1: new high-speed USB device number 5 using dummy_hcd [ 799.787346][ T95] usb 2-1: new high-speed USB device number 5 using dummy_hcd [ 799.807352][ T1845] usb 4-1: new high-speed USB device number 5 using dummy_hcd [ 799.867870][ T1841] usb 3-1: Using ep0 maxpacket: 8 [ 799.887441][ T95] usb 2-1: Using ep0 maxpacket: 8 [ 799.897442][ T1845] usb 4-1: Using ep0 maxpacket: 8 [ 799.987508][ T1841] usb 3-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 799.996621][ T1841] usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 800.005453][ T1841] usb 3-1: config 0 descriptor?? [ 800.017447][ T1845] usb 4-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 800.017807][ T95] usb 2-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 800.026812][ T1845] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 800.027903][ T1845] usb 4-1: config 0 descriptor?? [ 800.035895][ T95] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 800.058106][ T95] usb 2-1: config 0 descriptor?? [ 800.079150][ T1845] chaoskey 4-1:0.0: Unable to register with hwrng [ 800.099179][ T95] chaoskey 2-1:0.0: Unable to register with hwrng executing program executing program executing program [ 800.269431][ T1841] usb 3-1: USB disconnect, device number 5 [ 800.278594][ T1845] usb 4-1: USB disconnect, device number 5 [ 800.298567][ T95] usb 2-1: USB disconnect, device number 5 [ 800.637343][ T1845] usb 4-1: new high-speed USB device number 6 using dummy_hcd [ 800.707353][ T95] usb 2-1: new high-speed USB device number 6 using dummy_hcd [ 800.727418][ T1845] usb 4-1: Using ep0 maxpacket: 8 [ 800.797404][ T95] usb 2-1: Using ep0 maxpacket: 8 [ 800.847965][ T1845] usb 4-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 800.857050][ T1845] usb 4-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 800.866337][ T1845] usb 4-1: config 0 descriptor?? [ 800.918617][ T95] usb 2-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 800.927761][ T95] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 800.936459][ T95] usb 2-1: config 0 descriptor?? [ 800.979452][ T95] chaoskey 2-1:0.0: Unable to register with hwrng executing program [ 801.128680][ T1845] usb 4-1: USB disconnect, device number 6 executing program [ 801.178616][ T1847] usb 2-1: USB disconnect, device number 6 [ 801.537400][ T1847] usb 2-1: new high-speed USB device number 7 using dummy_hcd [ 801.627407][ T1847] usb 2-1: Using ep0 maxpacket: 8 [ 801.747477][ T1847] usb 2-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 801.756595][ T1847] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 801.765422][ T1847] usb 2-1: config 0 descriptor?? executing program [ 802.018738][ T1847] usb 2-1: USB disconnect, device number 7 executing program executing program executing program executing program executing program executing program executing program [ 808.017439][ T83] usb 1-1: new high-speed USB device number 3 using dummy_hcd [ 808.107407][ T83] usb 1-1: Using ep0 maxpacket: 8 [ 808.227453][ T83] usb 1-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 808.236562][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 808.245487][ T83] usb 1-1: config 0 descriptor?? executing program executing program [ 808.508846][ T83] usb 1-1: USB disconnect, device number 3 [ 808.527387][ 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 [ 818.897351][ T83] usb 1-1: new high-speed USB device number 4 using dummy_hcd [ 818.987421][ T83] usb 1-1: Using ep0 maxpacket: 8 [ 819.107460][ T83] usb 1-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 819.116761][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 819.125684][ T83] usb 1-1: config 0 descriptor?? executing program executing program [ 819.398281][ T83] usb 1-1: USB disconnect, device number 4 [ 819.417460][ 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 [ 830.427362][ T83] usb 1-1: new high-speed USB device number 5 using dummy_hcd [ 830.517455][ T83] usb 1-1: Using ep0 maxpacket: 8 [ 830.637421][ T83] usb 1-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 830.646564][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 830.655368][ T83] usb 1-1: config 0 descriptor?? executing program [ 830.918656][ T83] usb 1-1: USB disconnect, device number 5 [ 830.937504][ T1909] 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 [ 841.947386][ T83] usb 1-1: new high-speed USB device number 6 using dummy_hcd executing program [ 842.037427][ T83] usb 1-1: Using ep0 maxpacket: 8 [ 842.157429][ T83] usb 1-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 842.166558][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 842.175612][ T83] usb 1-1: config 0 descriptor?? executing program [ 842.438487][ T83] usb 1-1: USB disconnect, device number 6 [ 842.457525][ 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 [ 853.457394][ T83] usb 1-1: new high-speed USB device number 7 using dummy_hcd [ 853.547421][ T83] usb 1-1: Using ep0 maxpacket: 8 [ 853.667906][ T83] usb 1-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 853.677026][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 853.685879][ T83] usb 1-1: config 0 descriptor?? executing program [ 853.948615][ T83] usb 1-1: USB disconnect, device number 7 [ 853.967501][ 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 [ 864.337342][ T83] usb 1-1: new high-speed USB device number 8 using dummy_hcd [ 864.427442][ T83] usb 1-1: Using ep0 maxpacket: 8 [ 864.547851][ T83] usb 1-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 864.556965][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 864.565794][ T83] usb 1-1: config 0 descriptor?? executing program [ 864.828634][ T83] usb 1-1: USB disconnect, device number 8 [ 864.857523][ 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 executing program [ 875.857367][ T83] usb 1-1: new high-speed USB device number 9 using dummy_hcd [ 875.947417][ T83] usb 1-1: Using ep0 maxpacket: 8 [ 876.067419][ T83] usb 1-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 876.076525][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 876.085448][ T83] usb 1-1: config 0 descriptor?? executing program executing program [ 876.338657][ T83] usb 1-1: USB disconnect, device number 9 [ 876.357397][ T1974] 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 [ 886.747377][ T83] usb 1-1: new high-speed USB device number 10 using dummy_hcd [ 886.837419][ T83] usb 1-1: Using ep0 maxpacket: 8 [ 886.957453][ T83] usb 1-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 886.966625][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 886.975801][ T83] usb 1-1: config 0 descriptor?? executing program executing program [ 887.258610][ T83] usb 1-1: USB disconnect, device number 10 [ 887.277420][ T1990] 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 [ 898.257334][ T83] usb 1-1: new high-speed USB device number 11 using dummy_hcd [ 898.347404][ T83] usb 1-1: Using ep0 maxpacket: 8 executing program [ 898.467513][ T83] usb 1-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 898.477582][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 898.487741][ T83] usb 1-1: config 0 descriptor?? executing program [ 898.739512][ T83] usb 1-1: USB disconnect, device number 11 [ 898.757443][ T2007] 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 [ 909.137349][ T83] usb 1-1: new high-speed USB device number 12 using dummy_hcd [ 909.227434][ T83] usb 1-1: Using ep0 maxpacket: 8 executing program [ 909.347468][ T83] usb 1-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 909.356693][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 909.365768][ T83] usb 1-1: config 0 descriptor?? executing program [ 909.638533][ T83] usb 1-1: USB disconnect, device number 12 [ 909.657376][ T2023] 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 [ 920.667347][ T83] usb 1-1: new high-speed USB device number 13 using dummy_hcd [ 920.757404][ T83] usb 1-1: Using ep0 maxpacket: 8 [ 920.877421][ T83] usb 1-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 920.886565][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 920.895396][ T83] usb 1-1: config 0 descriptor?? executing program executing program [ 921.158415][ T83] usb 1-1: USB disconnect, device number 13 [ 921.187472][ T2039] 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 [ 932.197354][ T83] usb 1-1: new high-speed USB device number 14 using dummy_hcd [ 932.287480][ T83] usb 1-1: Using ep0 maxpacket: 8 [ 932.408088][ T83] usb 1-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 932.417251][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 932.426361][ T83] usb 1-1: config 0 descriptor?? executing program [ 932.688640][ T83] usb 1-1: USB disconnect, device number 14 [ 932.717394][ T2056] 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 [ 943.347346][ T22] INFO: task kworker/1:0:17 blocked for more than 143 seconds. [ 943.356232][ T22] Not tainted 5.5.0-syzkaller #0 [ 943.361741][ T22] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 943.370739][ T22] kworker/1:0 D25760 17 2 0x80004000 [ 943.377488][ T22] Workqueue: usb_hub_wq hub_event [ 943.382530][ T22] Call Trace: [ 943.386216][ T22] ? __schedule+0x892/0x1d80 [ 943.390852][ T22] ? __sched_text_start+0x8/0x8 [ 943.396237][ T22] ? lockdep_hardirqs_on+0x382/0x580 [ 943.402144][ T22] schedule+0xcd/0x2b0 [ 943.406537][ T22] schedule_timeout+0x682/0xb20 [ 943.412250][ T22] ? find_held_lock+0x2d/0x110 [ 943.417745][ T22] ? usleep_range+0x160/0x160 [ 943.423059][ T22] ? mark_lock+0xbc/0x1160 [ 943.427722][ T22] ? do_raw_spin_lock+0x129/0x290 [ 943.433115][ T22] ? mark_held_locks+0x9f/0xe0 [ 943.438396][ T22] ? _raw_spin_unlock_irq+0x1f/0x30 [ 943.443760][ T22] wait_for_completion+0x26f/0x3c0 [ 943.449673][ T22] ? wait_for_completion_interruptible+0x420/0x420 [ 943.456743][ T22] ? wake_up_q+0x140/0x140 [ 943.463130][ T22] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 943.472107][ T22] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 943.478302][ T22] kthread_stop+0x17a/0x780 [ 943.483247][ T22] hwrng_unregister+0x24f/0x330 [ 943.488601][ T22] chaoskey_disconnect+0x216/0x290 executing program [ 943.494081][ T22] usb_unbind_interface+0x1bd/0x8a0 [ 943.499943][ T22] ? __pm_runtime_idle+0xd1/0x310 [ 943.506133][ T22] ? usb_autoresume_device+0x60/0x60 [ 943.512342][ T22] device_release_driver_internal+0x42f/0x500 [ 943.520282][ T22] bus_remove_device+0x2eb/0x5a0 [ 943.526305][ T22] device_del+0x481/0xd30 [ 943.531105][ T22] ? device_create_with_groups+0x120/0x120 [ 943.537207][ T22] ? usb_remove_ep_devs+0x3e/0x80 [ 943.542590][ T22] ? remove_intf_ep_devs+0x13f/0x1d0 [ 943.548484][ T22] usb_disable_device+0x23d/0x790 [ 943.554177][ T22] usb_disconnect+0x293/0x900 [ 943.558959][ T22] hub_event+0x1a1d/0x4300 [ 943.563551][ T22] ? hub_port_debounce+0x350/0x350 [ 943.569130][ T22] ? find_held_lock+0x2d/0x110 [ 943.574169][ T22] ? mark_held_locks+0xe0/0xe0 [ 943.579074][ T22] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 943.584626][ T22] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 943.590179][ T22] process_one_work+0x94b/0x1620 [ 943.595496][ T22] ? pwq_dec_nr_in_flight+0x310/0x310 [ 943.601038][ T22] ? do_raw_spin_lock+0x129/0x290 [ 943.606079][ T22] worker_thread+0x7ab/0xe20 [ 943.610708][ T22] ? process_one_work+0x1620/0x1620 [ 943.616074][ T22] kthread+0x318/0x420 [ 943.620415][ T22] ? kthread_create_on_node+0xf0/0xf0 [ 943.625875][ T22] ret_from_fork+0x24/0x30 [ 943.630813][ T22] INFO: task kworker/1:3:1817 blocked for more than 143 seconds. [ 943.639055][ T22] Not tainted 5.5.0-syzkaller #0 [ 943.644629][ T22] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 943.653936][ T22] kworker/1:3 D25976 1817 2 0x80004000 [ 943.660345][ T22] Workqueue: usb_hub_wq hub_event [ 943.665362][ T22] Call Trace: [ 943.668842][ T22] ? __schedule+0x892/0x1d80 [ 943.673566][ T22] ? __sched_text_start+0x8/0x8 [ 943.678465][ T22] ? lockdep_hardirqs_on+0x382/0x580 [ 943.683912][ T22] schedule+0xcd/0x2b0 [ 943.688114][ T22] schedule_timeout+0x682/0xb20 [ 943.693041][ T22] ? find_held_lock+0x2d/0x110 [ 943.697891][ T22] ? usleep_range+0x160/0x160 [ 943.702736][ T22] ? mark_lock+0xbc/0x1160 [ 943.707408][ T22] ? do_raw_spin_lock+0x129/0x290 [ 943.712455][ T22] ? mark_held_locks+0x9f/0xe0 [ 943.717230][ T22] ? _raw_spin_unlock_irq+0x1f/0x30 [ 943.722492][ T22] wait_for_completion+0x26f/0x3c0 [ 943.728221][ T22] ? wait_for_completion_interruptible+0x420/0x420 [ 943.734983][ T22] ? wake_up_q+0x140/0x140 [ 943.739611][ T22] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 943.745229][ T22] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 943.750684][ T22] kthread_stop+0x17a/0x780 [ 943.755200][ T22] hwrng_unregister+0x24f/0x330 [ 943.760260][ T22] chaoskey_disconnect+0x216/0x290 [ 943.765395][ T22] usb_unbind_interface+0x1bd/0x8a0 [ 943.770657][ T22] ? __pm_runtime_idle+0xd1/0x310 [ 943.775888][ T22] ? usb_autoresume_device+0x60/0x60 [ 943.781611][ T22] device_release_driver_internal+0x42f/0x500 [ 943.787803][ T22] bus_remove_device+0x2eb/0x5a0 [ 943.792750][ T22] device_del+0x481/0xd30 [ 943.797083][ T22] ? device_create_with_groups+0x120/0x120 [ 943.802950][ T22] ? usb_remove_ep_devs+0x3e/0x80 [ 943.808422][ T22] ? remove_intf_ep_devs+0x13f/0x1d0 [ 943.813714][ T22] usb_disable_device+0x23d/0x790 [ 943.818801][ T22] usb_disconnect+0x293/0x900 [ 943.823489][ T22] hub_event+0x1a1d/0x4300 [ 943.827951][ T22] ? hub_port_debounce+0x350/0x350 [ 943.833067][ T22] ? find_held_lock+0x2d/0x110 [ 943.838068][ T22] ? mark_held_locks+0xe0/0xe0 [ 943.843021][ T22] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 943.848981][ T22] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 943.854510][ T22] process_one_work+0x94b/0x1620 [ 943.859652][ T22] ? pwq_dec_nr_in_flight+0x310/0x310 [ 943.865169][ T22] ? do_raw_spin_lock+0x129/0x290 [ 943.870244][ T22] worker_thread+0x7ab/0xe20 [ 943.874923][ T22] ? process_one_work+0x1620/0x1620 [ 943.880177][ T22] kthread+0x318/0x420 [ 943.884397][ T22] ? kthread_create_on_node+0xf0/0xf0 [ 943.890000][ T22] ret_from_fork+0x24/0x30 [ 943.894562][ T22] [ 943.894562][ T22] Showing all locks held in the system: [ 943.902702][ T22] 5 locks held by kworker/1:0/17: [ 943.907783][ T22] #0: ffff8881d8d67528 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x82a/0x1620 [ 943.918337][ T22] #1: ffff8881da267dd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85e/0x1620 [ 943.929231][ T22] #2: ffff8881d4d74200 (&dev->mutex){....}, at: hub_event+0x1be/0x4300 [ 943.937684][ T22] #3: ffff8881cc888200 (&dev->mutex){....}, at: usb_disconnect+0x91/0x900 [ 943.946388][ T22] #4: ffff8881cc889190 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 943.956631][ T22] 1 lock held by khungtaskd/22: [ 943.961638][ T22] #0: ffffffff87108960 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x264 [ 943.971516][ T22] 6 locks held by kworker/1:2/83: [ 943.976630][ T22] #0: ffff8881d8d67528 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x82a/0x1620 [ 943.987029][ T22] #1: ffff8881d8a7fdd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85e/0x1620 [ 943.987382][ T83] usb 1-1: new high-speed USB device number 15 using dummy_hcd [ 943.997887][ T22] #2: ffff8881d4cb0200 (&dev->mutex){....}, at: hub_event+0x1be/0x4300 [ 944.014170][ T22] #3: ffff8881d4cb2540 (&port_dev->status_lock){+.+.}, at: hub_event+0x1fae/0x4300 [ 944.023757][ T22] #4: ffff8881d57ff560 (hcd->address0_mutex){+.+.}, at: hub_port_init+0x1b6/0x2e60 [ 944.033729][ T22] #5: ffff8881db334618 (&rq->lock){-.-.}, at: newidle_balance+0xa2f/0xe50 [ 944.042676][ T22] 1 lock held by rsyslogd/1680: [ 944.047811][ T22] #0: ffff8881d0fe2d60 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xe3/0x100 [ 944.056754][ T22] 2 locks held by getty/1770: [ 944.061668][ T22] #0: ffff8881cecbb090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 944.071139][ T22] #1: ffffc900004792e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30 [ 944.081204][ T22] 2 locks held by getty/1771: [ 944.086126][ T22] #0: ffff8881cf3c5090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 944.095608][ T22] #1: ffffc9000046d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30 [ 944.097468][ T83] usb 1-1: Using ep0 maxpacket: 8 [ 944.105289][ T22] 2 locks held by getty/1772: [ 944.105295][ T22] #0: ffff8881cecbc090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 944.124702][ T22] #1: ffffc9000047d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30 [ 944.134450][ T22] 2 locks held by getty/1773: [ 944.139376][ T22] #0: ffff8881cf3da090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 944.148913][ T22] #1: ffffc9000048d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30 [ 944.158656][ T22] 2 locks held by getty/1774: [ 944.163454][ T22] #0: ffff8881ce874090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 944.173021][ T22] #1: ffffc900004852e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30 [ 944.183198][ T22] 2 locks held by getty/1775: [ 944.187908][ T22] #0: ffff8881cf3c6090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 944.199040][ T22] #1: ffffc900004712e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30 [ 944.208865][ T22] 2 locks held by getty/1776: [ 944.213544][ T22] #0: ffff8881cec2a090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 [ 944.223793][ T22] #1: ffffc9000045d2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30 [ 944.233660][ T22] 1 lock held by syz-executor569/1801: [ 944.237498][ T83] usb 1-1: New USB device found, idVendor=12d8, idProduct=0001, bcdDevice=94.5d [ 944.239294][ T22] 5 locks held by kworker/1:3/1817: [ 944.239300][ T22] #0: ffff8881d8d67528 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x82a/0x1620 [ 944.248527][ T83] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 944.253810][ T22] #1: ffff8881cfb1fdd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85e/0x1620 [ 944.269849][ T83] usb 1-1: config 0 descriptor?? [ 944.272694][ T22] #2: ffff8881d4da3200 (&dev->mutex){....}, at: hub_event+0x1be/0x4300 [ 944.272732][ T22] #3: ffff8881cc88d200 (&dev->mutex){....}, at: usb_disconnect+0x91/0x900 [ 944.305752][ T22] #4: ffff8881cc028190 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 944.315863][ T22] 5 locks held by kworker/1:4/1841: [ 944.321122][ T22] #0: ffff8881d8d67528 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x82a/0x1620 [ 944.331748][ T22] #1: ffff8881cd2e7dd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85e/0x1620 [ 944.342608][ T22] #2: ffff8881d4cee200 (&dev->mutex){....}, at: hub_event+0x1be/0x4300 [ 944.351215][ T22] #3: ffff8881cc20c200 (&dev->mutex){....}, at: usb_disconnect+0x91/0x900 [ 944.360293][ T22] #4: ffff8881cc20e190 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 944.371097][ T22] 5 locks held by kworker/1:5/1845: [ 944.376368][ T22] #0: ffff8881d8d67528 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x82a/0x1620 [ 944.386683][ T22] #1: ffff8881cc68fdd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85e/0x1620 executing program [ 944.397543][ T22] #2: ffff8881d4d55200 (&dev->mutex){....}, at: hub_event+0x1be/0x4300 [ 944.406432][ T22] #3: ffff8881cbf46200 (&dev->mutex){....}, at: usb_disconnect+0x91/0x900 [ 944.415192][ T22] #4: ffff8881cbf47190 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 944.425609][ T22] 5 locks held by kworker/1:6/1847: [ 944.430894][ T22] #0: ffff8881d8d67528 ((wq_completion)usb_hub_wq){+.+.}, at: process_one_work+0x82a/0x1620 [ 944.447658][ T22] #1: ffff8881cc0a7dd0 ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x85e/0x1620 [ 944.458394][ T22] #2: ffff8881d4cb7200 (&dev->mutex){....}, at: hub_event+0x1be/0x4300 [ 944.467236][ T22] #3: ffff8881cbb8b200 (&dev->mutex){....}, at: usb_disconnect+0x91/0x900 [ 944.476022][ T22] #4: ffff8881cbb8c190 (&dev->mutex){....}, at: device_release_driver_internal+0x23/0x500 [ 944.486329][ T22] 1 lock held by hwrng/2073: [ 944.491127][ T22] #0: ffffffff87372740 (reading_mutex){+.+.}, at: hwrng_fillfn+0x78/0x1e0 [ 944.500143][ T22] executing program [ 944.502525][ T22] ============================================= [ 944.502525][ T22] [ 944.511122][ T22] NMI backtrace for cpu 0 [ 944.515593][ T22] CPU: 0 PID: 22 Comm: khungtaskd Not tainted 5.5.0-syzkaller #0 [ 944.523310][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 944.533683][ T22] Call Trace: [ 944.537030][ T22] dump_stack+0xef/0x16e [ 944.541474][ T22] ? x86_vector_activate.cold+0xc0/0xdd [ 944.547147][ T22] nmi_cpu_backtrace.cold+0x70/0xb1 [ 944.552572][ T22] ? lapic_can_unplug_cpu.cold+0x3b/0x3b [ 944.558816][ T22] nmi_trigger_cpumask_backtrace+0x1db/0x207 [ 944.564974][ T22] watchdog+0xa99/0xfd0 [ 944.569226][ T22] ? reset_hung_task_detector+0x30/0x30 [ 944.574766][ T22] kthread+0x318/0x420 [ 944.579264][ T22] ? kthread_create_on_node+0xf0/0xf0 [ 944.584696][ T22] ret_from_fork+0x24/0x30 [ 944.589709][ T22] Sending NMI from CPU 0 to CPUs 1: [ 944.595463][ C1] NMI backtrace for cpu 1 skipped: idling at default_idle+0x28/0x300 [ 944.596381][ T22] Kernel panic - not syncing: hung_task: blocked tasks [ 944.606965][ T83] usb 1-1: USB disconnect, device number 15 [ 944.610695][ T22] CPU: 0 PID: 22 Comm: khungtaskd Not tainted 5.5.0-syzkaller #0 [ 944.610702][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 944.610706][ T22] Call Trace: [ 944.610726][ T22] dump_stack+0xef/0x16e [ 944.610803][ T22] panic+0x2aa/0x6e1 [ 944.647140][ T22] ? add_taint.cold+0x16/0x16 [ 944.651974][ T22] ? cpumask_next+0x3c/0x40 [ 944.656870][ T22] ? printk_safe_flush+0xd9/0x120 [ 944.662248][ T22] ? watchdog+0xa99/0xfd0 [ 944.666597][ T22] ? nmi_trigger_cpumask_backtrace+0x1b3/0x207 [ 944.672753][ T22] watchdog+0xaaa/0xfd0 [ 944.676998][ T22] ? reset_hung_task_detector+0x30/0x30 [ 944.682684][ T22] kthread+0x318/0x420 [ 944.687121][ T22] ? kthread_create_on_node+0xf0/0xf0 [ 944.692633][ T22] ret_from_fork+0x24/0x30 [ 944.698192][ T22] Kernel Offset: disabled [ 944.702607][ T22] Rebooting in 86400 seconds..