[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 55.375102][ T26] audit: type=1800 audit(1569176273.240:25): pid=8617 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 55.396593][ T26] audit: type=1800 audit(1569176273.240:26): pid=8617 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 55.432994][ T26] audit: type=1800 audit(1569176273.240:27): pid=8617 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] 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 '10.128.0.61' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 66.978238][ T1523] block nbd5: Receive control failed (result -22) [ 66.985816][ T1523] block nbd1: Receive control failed (result -22) [ 66.994944][ T8778] block nbd5: shutting down sockets [ 67.002212][ T1523] block nbd0: Receive control failed (result -22) [ 67.009154][ T1523] block nbd3: Receive control failed (result -22) [ 67.013082][ T8780] block nbd1: shutting down sockets [ 67.016152][ T1523] block nbd2: Receive control failed (result -22) executing program executing program [ 67.027733][ T1523] block nbd4: Receive control failed (result -22) [ 67.036425][ T8773] block nbd0: shutting down sockets [ 67.043484][ T8782] block nbd2: shutting down sockets [ 67.046898][ T8781] block nbd4: shutting down sockets [ 67.054415][ T8779] block nbd3: shutting down sockets executing program executing program executing program executing program [ 67.097006][ T8792] block nbd1: Receive control failed (result -22) [ 67.106783][ T8792] block nbd5: Receive control failed (result -22) [ 67.107312][ T8795] block nbd1: shutting down sockets [ 67.120448][ T8796] block nbd5: shutting down sockets executing program [ 67.145779][ T8792] block nbd2: Receive control failed (result -22) [ 67.159282][ T8792] block nbd4: Receive control failed (result -22) [ 67.166296][ T8792] block nbd0: Receive control failed (result -22) [ 67.170668][ T8800] block nbd4: shutting down sockets [ 67.189105][ T8799] block nbd2: shutting down sockets executing program executing program [ 67.196975][ T8801] block nbd0: shutting down sockets [ 67.202897][ T8792] block nbd3: Receive control failed (result -22) [ 67.211276][ T8802] block nbd3: shutting down sockets [ 67.218060][ T8792] block nbd1: Receive control failed (result -22) [ 67.230146][ T8807] block nbd1: shutting down sockets [ 67.238253][ T8792] block nbd5: Receive control failed (result -22) executing program executing program executing program [ 67.246147][ T8792] block nbd4: Receive control failed (result -22) [ 67.246939][ T8809] block nbd5: shutting down sockets [ 67.266853][ T8812] block nbd4: shutting down sockets [ 67.280531][ T8792] block nbd2: Receive control failed (result -22) [ 67.287552][ T8788] block nbd3: Receive control failed (result -22) executing program executing program executing program [ 67.302547][ T8788] block nbd0: Receive control failed (result -22) [ 67.303989][ T8815] block nbd3: shutting down sockets [ 67.312858][ T8817] block nbd0: shutting down sockets [ 67.315803][ T8816] block nbd2: shutting down sockets executing program executing program executing program [ 67.347559][ T8821] block nbd5: Receive control failed (result -22) [ 67.354319][ T1523] block nbd4: Receive control failed (result -22) [ 67.363204][ T8823] block nbd5: shutting down sockets [ 67.366562][ T8825] block nbd4: shutting down sockets [ 67.372275][ T8821] block nbd1: Receive control failed (result -22) [ 67.384206][ T8822] block nbd1: shutting down sockets executing program executing program executing program [ 67.416562][ T8821] block nbd0: Receive control failed (result -22) [ 67.423433][ T1523] block nbd3: Receive control failed (result -22) [ 67.433910][ T8828] block nbd0: shutting down sockets [ 67.446757][ T8821] block nbd5: Receive control failed (result -22) [ 67.451984][ T8830] block nbd3: shutting down sockets executing program executing program [ 67.461905][ T8821] block nbd2: Receive control failed (result -22) [ 67.473864][ T8831] block nbd2: shutting down sockets [ 67.482951][ T8821] block nbd4: Receive control failed (result -22) [ 67.491964][ T8821] block nbd1: Receive control failed (result -22) [ 67.493183][ T8834] block nbd5: shutting down sockets [ 67.500965][ T8836] block nbd4: shutting down sockets [ 67.505191][ T8837] block nbd1: shutting down sockets executing program executing program [ 67.537549][ T8821] block nbd3: Receive control failed (result -22) [ 67.546123][ T8840] block nbd3: shutting down sockets [ 67.558544][ T8821] block nbd0: Receive control failed (result -22) [ 67.569887][ T8841] block nbd0: shutting down sockets executing program executing program [ 67.581914][ T8821] block nbd2: Receive control failed (result -22) [ 67.589835][ T8821] block nbd4: Receive control failed (result -22) [ 67.590227][ T8844] block nbd2: shutting down sockets [ 67.607433][ T8845] block nbd4: shutting down sockets executing program executing program executing program executing program [ 67.629415][ T8821] block nbd1: Receive control failed (result -22) [ 67.638009][ T8848] block nbd1: shutting down sockets [ 67.643228][ T8821] block nbd5: Receive control failed (result -22) [ 67.661692][ T8849] block nbd5: shutting down sockets [ 67.672294][ T8821] block nbd3: Receive control failed (result -22) executing program [ 67.679822][ T8821] block nbd0: Receive control failed (result -22) [ 67.686644][ T1523] block nbd2: Receive control failed (result -22) [ 67.686966][ T8854] block nbd3: shutting down sockets [ 67.693804][ T8821] block nbd4: Receive control failed (result -22) [ 67.706579][ T8855] block nbd4: shutting down sockets [ 67.713819][ T8852] block nbd0: shutting down sockets executing program executing program executing program [ 67.740142][ T8856] block nbd2: shutting down sockets [ 67.747846][ T8821] block nbd1: Receive control failed (result -22) [ 67.757260][ T8861] block nbd1: shutting down sockets executing program executing program [ 67.782010][ T8821] block nbd5: Receive control failed (result -22) [ 67.790444][ T8865] block nbd5: shutting down sockets [ 67.791243][ T8821] block nbd4: Receive control failed (result -22) [ 67.803633][ T1523] block nbd0: Receive control failed (result -22) [ 67.819633][ T8863] block nbd0: shutting down sockets [ 67.825798][ T8821] block nbd3: Receive control failed (result -22) executing program executing program executing program [ 67.833382][ T8821] block nbd1: Receive control failed (result -22) [ 67.834796][ T8869] block nbd3: shutting down sockets [ 67.859566][ T8870] block nbd1: shutting down sockets [ 67.865702][ T8864] block nbd4: shutting down sockets executing program executing program executing program executing program [ 67.886337][ T8821] block nbd2: Receive control failed (result -22) [ 67.893120][ T1523] block nbd5: Receive control failed (result -22) [ 67.908699][ T8873] block nbd2: shutting down sockets [ 67.913361][ T8874] block nbd5: shutting down sockets [ 67.921869][ T8821] block nbd0: Receive control failed (result -22) [ 67.931032][ T8877] block nbd0: shutting down sockets executing program [ 67.953249][ T8821] block nbd1: Receive control failed (result -22) [ 67.961221][ T8821] block nbd4: Receive control failed (result -22) [ 67.964271][ T8881] block nbd1: shutting down sockets [ 67.975519][ T8821] block nbd3: Receive control failed (result -22) [ 67.976338][ T8880] block nbd4: shutting down sockets [ 67.985329][ T8821] block nbd2: Receive control failed (result -22) [ 67.990109][ T8879] block nbd3: shutting down sockets executing program executing program executing program [ 68.014163][ T8882] block nbd2: shutting down sockets [ 68.026099][ T8821] block nbd5: Receive control failed (result -22) [ 68.032824][ T1523] block nbd0: Receive control failed (result -22) [ 68.040848][ T8887] block nbd5: shutting down sockets executing program executing program [ 68.061058][ T8888] block nbd0: shutting down sockets [ 68.071473][ T8821] block nbd1: Receive control failed (result -22) [ 68.078848][ T8821] block nbd4: Receive control failed (result -22) [ 68.086938][ T8891] block nbd1: shutting down sockets [ 68.086964][ T8892] block nbd4: shutting down sockets [ 68.093310][ T8821] block nbd3: Receive control failed (result -22) [ 68.106160][ T8893] block nbd3: shutting down sockets executing program executing program [ 68.114653][ T8821] block nbd2: Receive control failed (result -22) [ 68.126320][ T8896] block nbd2: shutting down sockets [ 68.140629][ T8821] block nbd0: Receive control failed (result -22) [ 68.140977][ T1523] block nbd5: Receive control failed (result -22) executing program executing program executing program executing program [ 68.160618][ T8900] block nbd5: shutting down sockets [ 68.160866][ T8899] block nbd0: shutting down sockets [ 68.194439][ T1523] block nbd1: Receive control failed (result -22) [ 68.202559][ T1523] block nbd4: Receive control failed (result -22) executing program executing program [ 68.202566][ T8821] block nbd3: Receive control failed (result -22) [ 68.203255][ T8821] block nbd2: Receive control failed (result -22) [ 68.224349][ T8905] block nbd1: shutting down sockets [ 68.224577][ T8904] block nbd3: shutting down sockets [ 68.236803][ T8906] block nbd2: shutting down sockets [ 68.254960][ T8903] block nbd4: shutting down sockets executing program executing program executing program [ 68.284790][ T8821] block nbd0: Receive control failed (result -22) [ 68.292608][ T8821] block nbd5: Receive control failed (result -22) [ 68.293593][ T8912] block nbd0: shutting down sockets [ 68.319798][ T8911] block nbd5: shutting down sockets executing program executing program [ 68.344195][ T8821] block nbd1: Receive control failed (result -22) [ 68.351642][ T8821] block nbd2: Receive control failed (result -22) [ 68.361106][ T8918] block nbd2: shutting down sockets [ 68.369571][ T8821] block nbd3: Receive control failed (result -22) [ 68.370380][ T8917] block nbd1: shutting down sockets [ 68.384641][ T8915] block nbd3: shutting down sockets executing program [ 68.384999][ T8821] block nbd0: Receive control failed (result -22) [ 68.396998][ T1523] block nbd4: Receive control failed (result -22) [ 68.407951][ T8923] block nbd0: shutting down sockets [ 68.428575][ T8916] block nbd4: shutting down sockets [ 68.432466][ T8821] block nbd5: Receive control failed (result -22) executing program [ 68.443263][ T8925] block nbd5: shutting down sockets executing program executing program [ 68.465211][ T8821] block nbd2: Receive control failed (result -22) [ 68.476335][ T8927] block nbd2: shutting down sockets [ 68.490250][ T8821] block nbd3: Receive control failed (result -22) [ 68.492325][ T1523] block nbd0: Receive control failed (result -22) executing program executing program executing program executing program [ 68.510960][ T8930] block nbd0: shutting down sockets [ 68.514710][ T8929] block nbd3: shutting down sockets [ 68.542083][ T1523] block nbd1: Receive control failed (result -22) [ 68.550491][ T8933] block nbd1: shutting down sockets [ 68.556468][ T1523] block nbd4: Receive control failed (result -22) executing program executing program executing program [ 68.568954][ T8821] block nbd5: Receive control failed (result -22) [ 68.577796][ T8934] block nbd4: shutting down sockets [ 68.585542][ T8935] block nbd5: shutting down sockets [ 68.594645][ T8821] block nbd2: Receive control failed (result -22) [ 68.603009][ T8939] block nbd2: shutting down sockets executing program [ 68.627158][ T8821] block nbd3: Receive control failed (result -22) [ 68.627246][ T1523] block nbd1: Receive control failed (result -22) [ 68.634779][ T8821] block nbd0: Receive control failed (result -22) [ 68.651099][ T8941] block nbd3: shutting down sockets [ 68.652537][ T8943] block nbd1: shutting down sockets [ 68.659211][ T8942] block nbd0: shutting down sockets executing program executing program executing program executing program executing program [ 68.692181][ T8821] block nbd4: Receive control failed (result -22) [ 68.700989][ T8947] block nbd4: shutting down sockets [ 68.706755][ T8821] block nbd5: Receive control failed (result -22) [ 68.714166][ T8821] block nbd2: Receive control failed (result -22) [ 68.722848][ T8948] block nbd5: shutting down sockets [ 68.723386][ T8949] block nbd2: shutting down sockets executing program executing program [ 68.755800][ T8821] block nbd0: Receive control failed (result -22) [ 68.755857][ T1523] block nbd1: Receive control failed (result -22) [ 68.774082][ T8954] block nbd0: shutting down sockets [ 68.775172][ T8955] block nbd1: shutting down sockets [ 68.785276][ T1523] block nbd3: Receive control failed (result -22) executing program executing program [ 68.815035][ T1523] block nbd5: Receive control failed (result -22) [ 68.820803][ T8821] block nbd4: Receive control failed (result -22) [ 68.823668][ T8953] block nbd3: shutting down sockets [ 68.831726][ T8959] block nbd5: shutting down sockets [ 68.849093][ T8960] block nbd4: shutting down sockets [ 68.854804][ T8821] block nbd2: Receive control failed (result -22) executing program executing program [ 68.863373][ T8963] block nbd2: shutting down sockets [ 68.874529][ T8821] block nbd1: Receive control failed (result -22) [ 68.883217][ T8964] block nbd1: shutting down sockets [ 68.902168][ T8821] block nbd3: Receive control failed (result -22) [ 68.910092][ T8969] block nbd3: shutting down sockets executing program executing program executing program executing program [ 68.910380][ T8821] block nbd0: Receive control failed (result -22) [ 68.923920][ T8967] block nbd0: shutting down sockets [ 68.940793][ T8821] block nbd5: Receive control failed (result -22) [ 68.951233][ T8971] block nbd5: shutting down sockets executing program [ 68.967841][ T8821] block nbd4: Receive control failed (result -22) [ 68.975375][ T8821] block nbd1: Receive control failed (result -22) [ 68.975824][ T1523] block nbd2: Receive control failed (result -22) [ 68.984158][ T8974] block nbd1: shutting down sockets [ 68.995428][ T8973] block nbd4: shutting down sockets [ 69.013274][ T8975] block nbd2: shutting down sockets executing program executing program executing program executing program [ 69.035868][ T1523] block nbd3: Receive control failed (result -22) [ 69.039568][ T8821] block nbd5: Receive control failed (result -22) [ 69.050883][ T8982] block nbd5: shutting down sockets [ 69.057274][ T8821] block nbd0: Receive control failed (result -22) [ 69.057813][ T8979] block nbd3: shutting down sockets [ 69.066732][ T8980] block nbd0: shutting down sockets [ 69.077406][ T8821] block nbd4: Receive control failed (result -22) executing program executing program executing program [ 69.087923][ T8986] block nbd4: shutting down sockets [ 69.095455][ T8821] block nbd1: Receive control failed (result -22) [ 69.104098][ T8985] block nbd1: shutting down sockets [ 69.114343][ T8821] block nbd2: Receive control failed (result -22) [ 69.123183][ T8989] block nbd2: shutting down sockets executing program executing program executing program executing program [ 69.156513][ T8821] block nbd5: Receive control failed (result -22) [ 69.156519][ T1523] block nbd0: Receive control failed (result -22) [ 69.179017][ T8991] block nbd0: shutting down sockets [ 69.180182][ T8992] block nbd5: shutting down sockets executing program [ 69.200615][ T8821] block nbd1: Receive control failed (result -22) [ 69.211242][ T8997] block nbd1: shutting down sockets [ 69.216730][ T8821] block nbd3: Receive control failed (result -22) [ 69.224748][ T8821] block nbd2: Receive control failed (result -22) [ 69.225976][ T8999] block nbd3: shutting down sockets [ 69.245271][ T8998] block nbd2: shutting down sockets executing program [ 69.251897][ T8821] block nbd4: Receive control failed (result -22) [ 69.260170][ T8996] block nbd4: shutting down sockets [ 69.277322][ T8821] block nbd5: Receive control failed (result -22) [ 69.287336][ T9004] block nbd5: shutting down sockets executing program executing program executing program executing program [ 69.308227][ T8821] block nbd0: Receive control failed (result -22) [ 69.318092][ T9006] block nbd0: shutting down sockets [ 69.336656][ T8821] block nbd4: Receive control failed (result -22) [ 69.342575][ T1523] block nbd3: Receive control failed (result -22) [ 69.350347][ T8821] block nbd1: Receive control failed (result -22) executing program executing program [ 69.358717][ T9010] block nbd3: shutting down sockets [ 69.359227][ T9008] block nbd1: shutting down sockets [ 69.387623][ T8821] block nbd2: Receive control failed (result -22) [ 69.388180][ T9009] block nbd4: shutting down sockets executing program executing program [ 69.406062][ T9013] block nbd2: shutting down sockets [ 69.417105][ T8821] block nbd0: Receive control failed (result -22) [ 69.426017][ T9017] block nbd0: shutting down sockets [ 69.435309][ T8821] block nbd5: Receive control failed (result -22) [ 69.443850][ T9015] block nbd5: shutting down sockets executing program executing program executing program executing program [ 69.455886][ T8821] block nbd3: Receive control failed (result -22) [ 69.463510][ T1523] block nbd1: Receive control failed (result -22) [ 69.472103][ T9021] block nbd1: shutting down sockets [ 69.480058][ T9020] block nbd3: shutting down sockets [ 69.495126][ T8821] block nbd5: Receive control failed (result -22) executing program executing program [ 69.507901][ T8821] block nbd2: Receive control failed (result -22) [ 69.515656][ T1523] block nbd0: Receive control failed (result -22) [ 69.525026][ T8821] block nbd4: Receive control failed (result -22) [ 69.525231][ T9024] block nbd2: shutting down sockets [ 69.538660][ T9025] block nbd0: shutting down sockets [ 69.548143][ T9026] block nbd4: shutting down sockets [ 69.550748][ T9027] block nbd5: shutting down sockets executing program executing program executing program executing program executing program [ 69.578934][ T8821] block nbd1: Receive control failed (result -22) [ 69.583436][ T1523] block nbd3: Receive control failed (result -22) [ 69.594095][ T9032] block nbd1: shutting down sockets [ 69.605575][ T9034] block nbd3: shutting down sockets [ 69.637436][ T1523] block nbd4: Receive control failed (result -22) [ 69.637476][ T8821] block nbd0: Receive control failed (result -22) [ 69.656773][ T8821] block nbd2: Receive control failed (result -22) [ 69.663315][ T9039] block nbd4: shutting down sockets [ 69.669593][ T8821] block nbd5: Receive control failed (result -22) [ 69.670707][ T9038] block nbd2: shutting down sockets executing program executing program [ 69.685231][ T9037] block nbd0: shutting down sockets [ 69.698167][ T8821] block nbd1: Receive control failed (result -22) [ 69.708949][ T9043] block nbd1: shutting down sockets [ 69.716405][ T8821] block nbd3: Receive control failed (result -22) [ 69.717495][ T9036] block nbd5: shutting down sockets [ 69.730153][ T9046] block nbd3: shutting down sockets executing program executing program executing program executing program executing program [ 69.747304][ T8821] block nbd4: Receive control failed (result -22) [ 69.759151][ T9048] block nbd4: shutting down sockets [ 69.765368][ T8821] block nbd0: Receive control failed (result -22) [ 69.782084][ T9051] block nbd0: shutting down sockets [ 69.787556][ T8821] block nbd2: Receive control failed (result -22) [ 69.809211][ T9050] block nbd2: shutting down sockets [ 69.814995][ T8821] block nbd3: Receive control failed (result -22) [ 69.823628][ T8821] block nbd5: Receive control failed (result -22) [ 69.824056][ T9054] block nbd3: shutting down sockets [ 69.838201][ T8821] block nbd1: Receive control failed (result -22) [ 69.848824][ T9055] block nbd1: shutting down sockets executing program executing program executing program executing program executing program executing program [ 69.857003][ T9056] block nbd5: shutting down sockets [ 69.877796][ T8821] block nbd4: Receive control failed (result -22) [ 69.886895][ T9060] block nbd4: shutting down sockets [ 69.895098][ T8821] block nbd0: Receive control failed (result -22) [ 69.903695][ T9061] block nbd0: shutting down sockets [ 69.920792][ T8821] block nbd3: Receive control failed (result -22) [ 69.921252][ T1523] block nbd1: Receive control failed (result -22) [ 69.931941][ T8821] block nbd2: Receive control failed (result -22) [ 69.934988][ T8792] block nbd5: Receive control failed (result -22) [ 69.954605][ T9067] block nbd5: shutting down sockets [ 69.964263][ T9066] block nbd3: shutting down sockets executing program executing program [ 69.970097][ T9064] block nbd2: shutting down sockets [ 69.972981][ T9065] block nbd1: shutting down sockets [ 70.008499][ T1523] block nbd0: Receive control failed (result -22) executing program executing program executing program executing program [ 70.010011][ T8792] block nbd4: Receive control failed (result -22) [ 70.026676][ T9073] block nbd0: shutting down sockets [ 70.033129][ T9072] block nbd4: shutting down sockets [ 70.058436][ T8792] block nbd5: Receive control failed (result -22) executing program [ 70.066371][ T8792] block nbd2: Receive control failed (result -22) [ 70.073491][ T1523] block nbd1: Receive control failed (result -22) [ 70.080791][ T1523] block nbd3: Receive control failed (result -22) [ 70.090401][ T9078] block nbd5: shutting down sockets [ 70.099545][ T9079] block nbd1: shutting down sockets [ 70.103797][ T9077] block nbd2: shutting down sockets [ 70.108265][ T9076] block nbd3: shutting down sockets executing program executing program executing program executing program executing program [ 70.142442][ T8792] block nbd4: Receive control failed (result -22) [ 70.151840][ T9084] block nbd4: shutting down sockets [ 70.158102][ T8792] block nbd0: Receive control failed (result -22) [ 70.166706][ T9086] block nbd0: shutting down sockets [ 70.183396][ T8792] block nbd3: Receive control failed (result -22) [ 70.192423][ T8792] block nbd5: Receive control failed (result -22) [ 70.200411][ T8792] block nbd1: Receive control failed (result -22) [ 70.200935][ T1523] block nbd2: Receive control failed (result -22) [ 70.209546][ T9091] block nbd1: shutting down sockets [ 70.223661][ T9090] block nbd2: shutting down sockets [ 70.230706][ T9089] block nbd5: shutting down sockets executing program executing program [ 70.243694][ T9088] block nbd3: shutting down sockets executing program executing program executing program [ 70.275500][ T1523] block nbd0: Receive control failed (result -22) [ 70.282319][ T8792] block nbd4: Receive control failed (result -22) [ 70.291322][ T9096] block nbd0: shutting down sockets [ 70.305037][ T1523] block nbd2: Receive control failed (result -22) [ 70.316590][ T1523] block nbd3: Receive control failed (result -22) executing program executing program [ 70.317052][ T8792] block nbd1: Receive control failed (result -22) [ 70.324792][ T9100] block nbd2: shutting down sockets [ 70.333303][ T9104] block nbd3: shutting down sockets [ 70.346891][ T9097] block nbd4: shutting down sockets [ 70.363191][ T9102] block nbd1: shutting down sockets executing program executing program executing program [ 70.370727][ T8792] block nbd5: Receive control failed (result -22) [ 70.379503][ T9103] block nbd5: shutting down sockets [ 70.398548][ T8792] block nbd0: Receive control failed (result -22) [ 70.407198][ T9107] block nbd0: shutting down sockets executing program executing program executing program [ 70.428186][ T8792] block nbd3: Receive control failed (result -22) [ 70.430341][ T1523] block nbd2: Receive control failed (result -22) [ 70.447390][ T1523] block nbd4: Receive control failed (result -22) [ 70.456174][ T9110] block nbd4: shutting down sockets [ 70.464987][ T9114] block nbd3: shutting down sockets [ 70.466669][ T9111] block nbd2: shutting down sockets executing program executing program [ 70.493459][ T1523] block nbd5: Receive control failed (result -22) [ 70.500765][ T1523] block nbd1: Receive control failed (result -22) [ 70.502875][ T9117] block nbd5: shutting down sockets [ 70.507924][ T1523] block nbd0: Receive control failed (result -22) [ 70.521681][ T9118] block nbd0: shutting down sockets [ 70.525442][ T9116] block nbd1: shutting down sockets executing program executing program executing program executing program [ 70.553237][ T1523] block nbd3: Receive control failed (result -22) [ 70.560487][ T1523] block nbd4: Receive control failed (result -22) [ 70.561931][ T9122] block nbd3: shutting down sockets [ 70.580423][ T9123] block nbd4: shutting down sockets [ 70.606496][ T1523] block nbd2: Receive control failed (result -22) [ 70.614374][ T1523] block nbd0: Receive control failed (result -22) [ 70.615448][ T9126] block nbd2: shutting down sockets [ 70.621981][ T8792] block nbd1: Receive control failed (result -22) [ 70.630395][ T9127] block nbd0: shutting down sockets [ 70.640894][ T9129] block nbd1: shutting down sockets [ 70.647993][ T8792] block nbd5: Receive control failed (result -22) executing program executing program executing program [ 70.656696][ T9128] block nbd5: shutting down sockets executing program executing program [ 70.689742][ T8792] block nbd3: Receive control failed (result -22) [ 70.698552][ T9134] block nbd3: shutting down sockets [ 70.704676][ T8792] block nbd0: Receive control failed (result -22) [ 70.713786][ T9137] block nbd0: shutting down sockets [ 70.720965][ T8792] block nbd4: Receive control failed (result -22) [ 70.730357][ T9136] block nbd4: shutting down sockets executing program [ 70.736044][ T8792] block nbd2: Receive control failed (result -22) [ 70.736081][ T1523] block nbd5: Receive control failed (result -22) [ 70.751013][ T9142] block nbd5: shutting down sockets [ 70.764607][ T1523] block nbd1: Receive control failed (result -22) [ 70.773807][ T9144] block nbd1: shutting down sockets executing program executing program executing program executing program executing program executing program [ 70.786850][ T9140] block nbd2: shutting down sockets [ 70.807640][ T1523] block nbd0: Receive control failed (result -22) [ 70.817357][ T1523] block nbd4: Receive control failed (result -22) [ 70.819707][ T9146] block nbd0: shutting down sockets [ 70.831327][ T9147] block nbd4: shutting down sockets [ 70.857367][ T1523] block nbd5: Receive control failed (result -22) [ 70.862278][ T8792] block nbd3: Receive control failed (result -22) [ 70.866282][ T1523] block nbd2: Receive control failed (result -22) [ 70.873266][ T9150] block nbd5: shutting down sockets [ 70.878509][ T1523] block nbd1: Receive control failed (result -22) [ 70.891314][ T9153] block nbd1: shutting down sockets executing program executing program [ 70.907042][ T9152] block nbd2: shutting down sockets [ 70.914582][ T9151] block nbd3: shutting down sockets [ 70.924471][ T1523] block nbd4: Receive control failed (result -22) [ 70.934255][ T9159] block nbd4: shutting down sockets executing program executing program executing program executing program [ 70.952326][ T1523] block nbd0: Receive control failed (result -22) [ 70.960804][ T9158] block nbd0: shutting down sockets [ 70.977911][ T1523] block nbd1: Receive control failed (result -22) [ 70.988712][ T9162] block nbd1: shutting down sockets executing program executing program [ 71.011080][ T1523] block nbd4: Receive control failed (result -22) [ 71.018459][ T8792] block nbd3: Receive control failed (result -22) [ 71.026212][ T8792] block nbd2: Receive control failed (result -22) [ 71.028641][ T9166] block nbd3: shutting down sockets [ 71.040602][ T9164] block nbd4: shutting down sockets [ 71.050481][ T9165] block nbd2: shutting down sockets executing program [ 71.068777][ T8792] block nbd5: Receive control failed (result -22) [ 71.080464][ T9170] block nbd5: shutting down sockets [ 71.084979][ T8792] block nbd0: Receive control failed (result -22) [ 71.094741][ T8792] block nbd1: Receive control failed (result -22) [ 71.103763][ T9172] block nbd1: shutting down sockets executing program executing program executing program executing program [ 71.117888][ T9171] block nbd0: shutting down sockets [ 71.140847][ T8792] block nbd4: Receive control failed (result -22) [ 71.150179][ T1523] block nbd3: Receive control failed (result -22) [ 71.157677][ T8792] block nbd2: Receive control failed (result -22) [ 71.159236][ T9176] block nbd4: shutting down sockets [ 71.173204][ T8792] block nbd5: Receive control failed (result -22) [ 71.182105][ T9182] block nbd5: shutting down sockets executing program executing program executing program [ 71.188667][ T9177] block nbd2: shutting down sockets [ 71.208947][ T8792] block nbd1: Receive control failed (result -22) [ 71.219147][ T9178] block nbd3: shutting down sockets [ 71.233493][ T9184] block nbd1: shutting down sockets executing program [ 71.248418][ T8792] block nbd0: Receive control failed (result -22) [ 71.255705][ T1523] block nbd4: Receive control failed (result -22) [ 71.263550][ T8792] block nbd0: shutting down sockets [ 71.264239][ T9187] block nbd4: shutting down sockets [ 71.270278][ T8792] [ 71.276563][ T8792] ============================================ [ 71.283031][ T8792] WARNING: possible recursive locking detected [ 71.289335][ T8792] 5.3.0+ #0 Not tainted [ 71.293572][ T8792] -------------------------------------------- [ 71.299714][ T8792] kworker/u5:2/8792 is trying to acquire lock: [ 71.306386][ T8792] ffff8880a2059ba8 ((wq_completion)knbd0-recv){+.+.}, at: flush_workqueue+0xf7/0x14b0 [ 71.317790][ T8792] [ 71.317790][ T8792] but task is already holding lock: [ 71.325881][ T8792] ffff8880a2059ba8 ((wq_completion)knbd0-recv){+.+.}, at: process_one_work+0x88b/0x1740 [ 71.336028][ T8792] [ 71.336028][ T8792] other info that might help us debug this: [ 71.344503][ T8792] Possible unsafe locking scenario: [ 71.344503][ T8792] [ 71.352294][ T8792] CPU0 [ 71.355785][ T8792] ---- [ 71.359127][ T8792] lock((wq_completion)knbd0-recv); [ 71.364687][ T8792] lock((wq_completion)knbd0-recv); [ 71.370168][ T8792] [ 71.370168][ T8792] *** DEADLOCK *** [ 71.370168][ T8792] [ 71.379026][ T8792] May be due to missing lock nesting notation [ 71.379026][ T8792] [ 71.387773][ T8792] 3 locks held by kworker/u5:2/8792: [ 71.393070][ T8792] #0: ffff8880a2059ba8 ((wq_completion)knbd0-recv){+.+.}, at: process_one_work+0x88b/0x1740 [ 71.404169][ T8792] #1: ffff88808b58fdc0 ((work_completion)(&args->work)){+.+.}, at: process_one_work+0x8c1/0x1740 [ 71.415150][ T8792] #2: ffff8880a390ce78 (&nbd->config_lock){+.+.}, at: refcount_dec_and_mutex_lock+0x56/0x90 [ 71.425833][ T8792] [ 71.425833][ T8792] stack backtrace: [ 71.432031][ T8792] CPU: 0 PID: 8792 Comm: kworker/u5:2 Not tainted 5.3.0+ #0 [ 71.440298][ T8792] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.451237][ T8792] Workqueue: knbd0-recv recv_work [ 71.457049][ T8792] Call Trace: [ 71.460737][ T8792] dump_stack+0x172/0x1f0 [ 71.465616][ T8792] __lock_acquire.cold+0x188/0x398 [ 71.470753][ T8792] ? mark_held_locks+0xf0/0xf0 [ 71.476184][ T8792] lock_acquire+0x190/0x410 [ 71.481096][ T8792] ? flush_workqueue+0xf7/0x14b0 [ 71.486125][ T8792] flush_workqueue+0x126/0x14b0 [ 71.491357][ T8792] ? flush_workqueue+0xf7/0x14b0 [ 71.496512][ T8792] ? lock_downgrade+0x920/0x920 [ 71.502407][ T8792] ? drain_workqueue+0x2b/0x470 [ 71.507509][ T8792] ? debug_check_no_obj_freed+0x20a/0x43f [ 71.513374][ T8792] ? find_held_lock+0x35/0x130 [ 71.518430][ T8792] ? pwq_unbound_release_workfn+0x2f0/0x2f0 [ 71.524926][ T8792] ? mark_lock+0xc2/0x1220 [ 71.529621][ T8792] drain_workqueue+0x1b4/0x470 [ 71.534779][ T8792] ? drain_workqueue+0x1b4/0x470 [ 71.539898][ T8792] ? kfree+0x226/0x2c0 [ 71.544316][ T8792] destroy_workqueue+0x21/0x6c0 [ 71.550551][ T8792] ? nbd_config_put+0x378/0x870 [ 71.555938][ T8792] nbd_config_put+0x3dd/0x870 [ 71.561242][ T8792] recv_work+0x19b/0x200 [ 71.566531][ T8792] process_one_work+0x9af/0x1740 [ 71.571945][ T8792] ? pwq_dec_nr_in_flight+0x320/0x320 [ 71.577688][ T8792] ? lock_acquire+0x190/0x410 [ 71.582802][ T8792] worker_thread+0x98/0xe40 [ 71.588221][ T8792] ? trace_hardirqs_on+0x67/0x240 [ 71.593340][ T8792] kthread+0x361/0x430 executing program executing program executing program executing program [ 71.597687][ T8792] ? process_one_work+0x1740/0x1740 [ 71.603770][ T8792] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 71.610516][ T8792] ret_from_fork+0x24/0x30 [ 71.626935][ T9191] kobject: 'nbd5' (000000004576d80f): kobject_uevent_env [ 71.626965][ T1523] block nbd5: Receive control failed (result -22) executing program executing program [ 71.634724][ T9191] kobject: 'nbd5' (000000004576d80f): fill_kobj_path: path = '/devices/virtual/block/nbd5' [ 71.654516][ T9191] block nbd5: shutting down sockets