[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.225' (ECDSA) to the list of known hosts. 2020/08/29 11:14:39 parsed 1 programs 2020/08/29 11:14:40 executed programs: 0 syzkaller login: [ 1050.785073][ T6868] IPVS: ftp: loaded support on port[0] = 21 [ 1050.939079][ T6868] chnl_net:caif_netlink_parms(): no params data found [ 1051.013255][ T6868] bridge0: port 1(bridge_slave_0) entered blocking state [ 1051.020679][ T6868] bridge0: port 1(bridge_slave_0) entered disabled state [ 1051.028989][ T6868] device bridge_slave_0 entered promiscuous mode [ 1051.037357][ T6868] bridge0: port 2(bridge_slave_1) entered blocking state [ 1051.044646][ T6868] bridge0: port 2(bridge_slave_1) entered disabled state [ 1051.052593][ T6868] device bridge_slave_1 entered promiscuous mode [ 1051.074419][ T6868] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 1051.085194][ T6868] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 1051.108870][ T6868] team0: Port device team_slave_0 added [ 1051.116491][ T6868] team0: Port device team_slave_1 added [ 1051.134489][ T6868] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 1051.141578][ T6868] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 1051.168004][ T6868] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 1051.180455][ T6868] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 1051.187408][ T6868] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 1051.213635][ T6868] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 1051.241634][ T6868] device hsr_slave_0 entered promiscuous mode [ 1051.248266][ T6868] device hsr_slave_1 entered promiscuous mode [ 1051.345842][ T6868] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 1051.355528][ T6868] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 1051.365551][ T6868] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 1051.376784][ T6868] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 1051.402485][ T6868] bridge0: port 2(bridge_slave_1) entered blocking state [ 1051.409755][ T6868] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1051.417266][ T6868] bridge0: port 1(bridge_slave_0) entered blocking state [ 1051.424383][ T6868] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1051.471229][ T6868] 8021q: adding VLAN 0 to HW filter on device bond0 [ 1051.485737][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 1051.496778][ T17] bridge0: port 1(bridge_slave_0) entered disabled state [ 1051.505201][ T17] bridge0: port 2(bridge_slave_1) entered disabled state [ 1051.513355][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 1051.526021][ T6868] 8021q: adding VLAN 0 to HW filter on device team0 [ 1051.537708][ T7090] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 1051.547172][ T7090] bridge0: port 1(bridge_slave_0) entered blocking state [ 1051.554342][ T7090] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1051.570868][ T6838] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 1051.580517][ T6838] bridge0: port 2(bridge_slave_1) entered blocking state [ 1051.587579][ T6838] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1051.604314][ T7089] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 1051.613355][ T7089] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 1051.625183][ T6838] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 1051.643599][ T6868] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 1051.654662][ T6868] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 1051.668165][ T6838] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 1051.677805][ T6838] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 1051.686785][ T6838] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 1051.704992][ T7089] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 1051.713286][ T7089] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 1051.726962][ T6868] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 1051.746579][ T6838] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 1051.769707][ T6868] device veth0_vlan entered promiscuous mode [ 1051.779501][ T7089] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 1051.787783][ T7089] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 1051.796405][ T7089] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 1051.807064][ T6868] device veth1_vlan entered promiscuous mode [ 1051.831045][ T6838] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 1051.839871][ T6838] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 1051.847979][ T6838] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 1051.859833][ T6868] device veth0_macvtap entered promiscuous mode [ 1051.870262][ T6868] device veth1_macvtap entered promiscuous mode [ 1051.891845][ T6868] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 1051.900697][ T6838] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 1051.911261][ T6838] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 1051.922955][ T6868] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 1051.930325][ T7089] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 1051.940238][ T7089] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 1051.952242][ T6868] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 1051.962557][ T6868] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 1051.971812][ T6868] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 1051.981073][ T6868] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 1052.057110][ T7094] IPVS: ftp: loaded support on port[0] = 21 [ 1052.121410][ T7105] nf_conntrack: default automatic helper assignment has been turned off for security reasons and CT-based firewall rule not found. Use the iptables CT target to attach helpers instead. [ 1052.162115][ T7094] IPVS: ftp: loaded support on port[0] = 21 [ 1052.215237][ T21] tipc: TX() has been purged, node left! [ 1052.749987][ T5] Bluetooth: hci0: command 0x0409 tx timeout [ 1053.433383][ T7141] IPVS: ftp: loaded support on port[0] = 21 [ 1053.447089][ T21] tipc: TX() has been purged, node left! [ 1054.587877][ T7170] IPVS: ftp: loaded support on port[0] = 21 [ 1054.606043][ T21] tipc: TX() has been purged, node left! [ 1054.828586][ T5] Bluetooth: hci0: command 0x041b tx timeout 2020/08/29 11:14:46 executed programs: 3 [ 1055.765507][ T7198] IPVS: ftp: loaded support on port[0] = 21 [ 1055.779280][ T21] tipc: TX() has been purged, node left! [ 1056.908561][ T2546] Bluetooth: hci0: command 0x040f tx timeout [ 1056.943933][ T7227] IPVS: ftp: loaded support on port[0] = 21 [ 1056.957528][ T21] tipc: TX() has been purged, node left! [ 1058.103468][ T7255] IPVS: ftp: loaded support on port[0] = 21 [ 1058.117324][ T21] tipc: TX() has been purged, node left! [ 1058.988438][ T7090] Bluetooth: hci0: command 0x0419 tx timeout [ 1059.326686][ T7283] IPVS: ftp: loaded support on port[0] = 21 [ 1059.360547][ T21] tipc: TX() has been purged, node left! [ 1060.502831][ T7311] IPVS: ftp: loaded support on port[0] = 21 [ 1060.515163][ T21] tipc: TX() has been purged, node left! 2020/08/29 11:14:52 executed programs: 8 [ 1061.665590][ T7339] IPVS: ftp: loaded support on port[0] = 21 [ 1061.685904][ T21] tipc: TX() has been purged, node left! [ 1062.823003][ T7367] IPVS: ftp: loaded support on port[0] = 21 [ 1062.834567][ T21] tipc: TX() has been purged, node left! [ 1064.010709][ T7395] IPVS: ftp: loaded support on port[0] = 21 [ 1064.046957][ T21] tipc: TX() has been purged, node left! [ 1065.199142][ T7423] IPVS: ftp: loaded support on port[0] = 21 [ 1065.226564][ T21] tipc: TX() has been purged, node left! [ 1066.389332][ T7451] IPVS: ftp: loaded support on port[0] = 21 [ 1066.436920][ T21] tipc: TX() has been purged, node left! 2020/08/29 11:14:58 executed programs: 13 [ 1067.563080][ T7479] IPVS: ftp: loaded support on port[0] = 21 [ 1067.596629][ T21] tipc: TX() has been purged, node left! [ 1068.726056][ T7507] IPVS: ftp: loaded support on port[0] = 21 [ 1068.738628][ T21] tipc: TX() has been purged, node left! [ 1069.888589][ T7535] IPVS: ftp: loaded support on port[0] = 21 [ 1069.907111][ T21] tipc: TX() has been purged, node left! [ 1071.036317][ T7563] IPVS: ftp: loaded support on port[0] = 21 [ 1071.056420][ T21] tipc: TX() has been purged, node left! [ 1072.229791][ T7591] IPVS: ftp: loaded support on port[0] = 21 [ 1072.268258][ T21] tipc: TX() has been purged, node left! 2020/08/29 11:15:04 executed programs: 18 [ 1073.432946][ T7619] IPVS: ftp: loaded support on port[0] = 21 [ 1073.445592][ T7] tipc: TX() has been purged, node left! [ 1074.579012][ T7647] IPVS: ftp: loaded support on port[0] = 21 [ 1074.596769][ T7] tipc: TX() has been purged, node left! [ 1075.718056][ T7675] IPVS: ftp: loaded support on port[0] = 21 [ 1075.745610][ T7] tipc: TX() has been purged, node left! [ 1076.934520][ T7703] IPVS: ftp: loaded support on port[0] = 21 [ 1076.947416][ T7] tipc: TX() has been purged, node left! [ 1078.088622][ T7731] IPVS: ftp: loaded support on port[0] = 21 [ 1078.105076][ T7] tipc: TX() has been purged, node left! 2020/08/29 11:15:09 executed programs: 23 [ 1079.245639][ T7759] IPVS: ftp: loaded support on port[0] = 21 [ 1079.280017][ T7] tipc: TX() has been purged, node left! [ 1080.469889][ T7787] IPVS: ftp: loaded support on port[0] = 21 [ 1080.498098][ T7] tipc: TX() has been purged, node left! [ 1081.677062][ T7815] IPVS: ftp: loaded support on port[0] = 21 [ 1081.706963][ T7] tipc: TX() has been purged, node left! [ 1082.861414][ T7843] IPVS: ftp: loaded support on port[0] = 21 [ 1082.877457][ T7] tipc: TX() has been purged, node left! [ 1084.040038][ T7871] IPVS: ftp: loaded support on port[0] = 21 [ 1084.056388][ T7] tipc: TX() has been purged, node left! 2020/08/29 11:15:15 executed programs: 28 [ 1085.169444][ T7899] IPVS: ftp: loaded support on port[0] = 21 [ 1085.186362][ T7] tipc: TX() has been purged, node left! [ 1086.338030][ T7927] IPVS: ftp: loaded support on port[0] = 21 [ 1086.357287][ T7] tipc: TX() has been purged, node left! [ 1087.468222][ T7955] IPVS: ftp: loaded support on port[0] = 21 [ 1087.500128][ T7] tipc: TX() has been purged, node left! [ 1088.666089][ T7983] IPVS: ftp: loaded support on port[0] = 21 [ 1088.695686][ T7] tipc: TX() has been purged, node left! [ 1089.858826][ T8011] IPVS: ftp: loaded support on port[0] = 21 [ 1089.878092][ T7] tipc: TX() has been purged, node left! 2020/08/29 11:15:21 executed programs: 33 [ 1090.995583][ T8039] IPVS: ftp: loaded support on port[0] = 21 [ 1091.009700][ T7] tipc: TX() has been purged, node left! [ 1092.137713][ T8067] IPVS: ftp: loaded support on port[0] = 21 [ 1092.155483][ T7] tipc: TX() has been purged, node left! [ 1093.343087][ T8095] IPVS: ftp: loaded support on port[0] = 21 [ 1093.355020][ T7] tipc: TX() has been purged, node left! [ 1094.514750][ T8123] IPVS: ftp: loaded support on port[0] = 21 [ 1094.526491][ T7] tipc: TX() has been purged, node left! [ 1095.676754][ T8151] IPVS: ftp: loaded support on port[0] = 21 [ 1095.728256][ T7] tipc: TX() has been purged, node left! 2020/08/29 11:15:27 executed programs: 38 [ 1096.855378][ T8179] IPVS: ftp: loaded support on port[0] = 21 [ 1096.890999][ T7] tipc: TX() has been purged, node left! [ 1098.082479][ T8207] IPVS: ftp: loaded support on port[0] = 21 [ 1098.121922][ T7] tipc: TX() has been purged, node left! [ 1099.284087][ T8235] IPVS: ftp: loaded support on port[0] = 21 [ 1099.298131][ T7] tipc: TX() has been purged, node left! [ 1100.448269][ T8263] IPVS: ftp: loaded support on port[0] = 21 [ 1100.466002][ T7] tipc: TX() has been purged, node left! [ 1101.618853][ T8291] IPVS: ftp: loaded support on port[0] = 21 [ 1101.637809][ T7] tipc: TX() has been purged, node left! 2020/08/29 11:15:33 executed programs: 43 [ 1102.817761][ T8319] IPVS: ftp: loaded support on port[0] = 21 [ 1102.848296][ T7] tipc: TX() has been purged, node left! [ 1103.973675][ T8347] IPVS: ftp: loaded support on port[0] = 21 [ 1103.988252][ T7] tipc: TX() has been purged, node left! [ 1105.154672][ T8375] IPVS: ftp: loaded support on port[0] = 21 [ 1105.181108][ T7] tipc: TX() has been purged, node left! [ 1106.324457][ T8403] IPVS: ftp: loaded support on port[0] = 21 [ 1106.338754][ T7] tipc: TX() has been purged, node left! [ 1107.484679][ T8431] IPVS: ftp: loaded support on port[0] = 21 [ 1107.499319][ T7] tipc: TX() has been purged, node left! 2020/08/29 11:15:39 executed programs: 48 [ 1108.652949][ T8459] IPVS: ftp: loaded support on port[0] = 21 [ 1108.677675][ T7] tipc: TX() has been purged, node left! [ 1109.876748][ T8487] IPVS: ftp: loaded support on port[0] = 21 [ 1109.909845][ T7] tipc: TX() has been purged, node left! [ 1111.087626][ T8515] IPVS: ftp: loaded support on port[0] = 21 [ 1111.117733][ T7] tipc: TX() has been purged, node left! [ 1112.293172][ T8543] IPVS: ftp: loaded support on port[0] = 21 [ 1112.307240][ T7] tipc: TX() has been purged, node left! [ 1113.486691][ T8571] IPVS: ftp: loaded support on port[0] = 21 [ 1113.507592][ T7] tipc: TX() has been purged, node left! 2020/08/29 11:15:45 executed programs: 53 [ 1114.704372][ T8599] IPVS: ftp: loaded support on port[0] = 21 [ 1114.730014][ T7] tipc: TX() has been purged, node left! [ 1115.883231][ T8627] IPVS: ftp: loaded support on port[0] = 21 [ 1115.897287][ T7] tipc: TX() has been purged, node left! [ 1117.064553][ T8655] IPVS: ftp: loaded support on port[0] = 21 [ 1117.098193][ T7] tipc: TX() has been purged, node left! [ 1118.233662][ T8683] IPVS: ftp: loaded support on port[0] = 21 [ 1118.246006][ T7] tipc: TX() has been purged, node left! [ 1119.408119][ T8711] IPVS: ftp: loaded support on port[0] = 21 [ 1119.427336][ T7] tipc: TX() has been purged, node left! 2020/08/29 11:15:51 executed programs: 58 [ 1120.584729][ T8739] IPVS: ftp: loaded support on port[0] = 21 [ 1120.598826][ T7] tipc: TX() has been purged, node left! [ 1121.813624][ T8767] IPVS: ftp: loaded support on port[0] = 21 [ 1121.827224][ T7] tipc: TX() has been purged, node left! [ 1123.022883][ T8795] IPVS: ftp: loaded support on port[0] = 21 [ 1123.035416][ T7] tipc: TX() has been purged, node left! [ 1124.174524][ T8823] IPVS: ftp: loaded support on port[0] = 21 [ 1124.188642][ T7] tipc: TX() has been purged, node left! [ 1125.362552][ T8851] IPVS: ftp: loaded support on port[0] = 21 [ 1125.376570][ T7] tipc: TX() has been purged, node left! 2020/08/29 11:15:57 executed programs: 63 [ 1126.615747][ T8879] IPVS: ftp: loaded support on port[0] = 21 [ 1126.648906][ T7] tipc: TX() has been purged, node left! [ 1127.789816][ T8907] IPVS: ftp: loaded support on port[0] = 21 [ 1127.807503][ T7] tipc: TX() has been purged, node left! [ 1128.947754][ T8935] IPVS: ftp: loaded support on port[0] = 21 [ 1128.965566][ T7] tipc: TX() has been purged, node left! [ 1130.097262][ T8963] IPVS: ftp: loaded support on port[0] = 21 [ 1130.115122][ T7] tipc: TX() has been purged, node left! [ 1131.274633][ T8991] IPVS: ftp: loaded support on port[0] = 21 [ 1131.289038][ T7] tipc: TX() has been purged, node left! 2020/08/29 11:16:03 executed programs: 68 [ 1132.519719][ T9019] IPVS: ftp: loaded support on port[0] = 21 [ 1132.556475][ T7] tipc: TX() has been purged, node left! [ 1133.719836][ T9047] IPVS: ftp: loaded support on port[0] = 21 [ 1133.748778][ T7] tipc: TX() has been purged, node left! [ 1134.847138][ T9075] IPVS: ftp: loaded support on port[0] = 21 [ 1134.877294][ T7] tipc: TX() has been purged, node left! [ 1136.052741][ T9103] IPVS: ftp: loaded support on port[0] = 21 [ 1136.080442][ T7] tipc: TX() has been purged, node left! [ 1137.227446][ T9131] IPVS: ftp: loaded support on port[0] = 21 [ 1137.245154][ T7] tipc: TX() has been purged, node left! 2020/08/29 11:16:09 executed programs: 73 [ 1138.383253][ T9159] IPVS: ftp: loaded support on port[0] = 21 [ 1138.396981][ T7] tipc: TX() has been purged, node left! [ 1139.535442][ T9187] IPVS: ftp: loaded support on port[0] = 21 [ 1139.566068][ T7] tipc: TX() has been purged, node left! [ 1140.652120][ T9215] IPVS: ftp: loaded support on port[0] = 21 [ 1140.677475][ T7] tipc: TX() has been purged, node left! [ 1141.843728][ T9243] IPVS: ftp: loaded support on port[0] = 21 [ 1141.867415][ T7] tipc: TX() has been purged, node left! [ 1143.013274][ T9271] IPVS: ftp: loaded support on port[0] = 21 [ 1143.027470][ T7] tipc: TX() has been purged, node left! 2020/08/29 11:16:14 executed programs: 78 [ 1144.176019][ T9299] IPVS: ftp: loaded support on port[0] = 21 [ 1144.209654][ T7] tipc: TX() has been purged, node left! [ 1145.344940][ T9327] IPVS: ftp: loaded support on port[0] = 21 [ 1145.366854][ T7] tipc: TX() has been purged, node left! [ 1146.527933][ T9355] IPVS: ftp: loaded support on port[0] = 21 [ 1146.545207][ T7] tipc: TX() has been purged, node left! [ 1147.721349][ T9383] IPVS: ftp: loaded support on port[0] = 21 [ 1147.735763][ T7] tipc: TX() has been purged, node left! [ 1148.905659][ T9411] IPVS: ftp: loaded support on port[0] = 21 [ 1148.930639][ T7] tipc: TX() has been purged, node left! 2020/08/29 11:16:20 executed programs: 83 [ 1150.111290][ T9439] IPVS: ftp: loaded support on port[0] = 21 [ 1150.125369][ T7] tipc: TX() has been purged, node left! [ 1151.260149][ T9467] IPVS: ftp: loaded support on port[0] = 21 [ 1151.286092][ T7] tipc: TX() has been purged, node left! [ 1152.458035][ T9495] IPVS: ftp: loaded support on port[0] = 21 [ 1152.476011][ T7] tipc: TX() has been purged, node left! [ 1153.647347][ T9523] IPVS: ftp: loaded support on port[0] = 21 [ 1153.675800][ T7] tipc: TX() has been purged, node left! [ 1154.819987][ T9551] IPVS: ftp: loaded support on port[0] = 21 [ 1154.836528][ T7] tipc: TX() has been purged, node left! 2020/08/29 11:16:26 executed programs: 88 [ 1155.984082][ T9579] IPVS: ftp: loaded support on port[0] = 21 [ 1155.996127][ T7] tipc: TX() has been purged, node left! [ 1157.154573][ T9607] IPVS: ftp: loaded support on port[0] = 21 [ 1157.178618][ T7] tipc: TX() has been purged, node left! [ 1158.331417][ T9635] IPVS: ftp: loaded support on port[0] = 21 [ 1158.357408][ T7] tipc: TX() has been purged, node left! [ 1159.541661][ T9663] IPVS: ftp: loaded support on port[0] = 21 [ 1159.557213][ T7] tipc: TX() has been purged, node left! [ 1160.732715][ T9691] IPVS: ftp: loaded support on port[0] = 21 [ 1160.745308][ T7] tipc: TX() has been purged, node left! 2020/08/29 11:16:32 executed programs: 93 [ 1161.919382][ T9719] IPVS: ftp: loaded support on port[0] = 21 [ 1161.946608][ T7] tipc: TX() has been purged, node left! [ 1163.058312][ T9747] IPVS: ftp: loaded support on port[0] = 21 [ 1163.075661][ T7] tipc: TX() has been purged, node left! [ 1164.203296][ T9775] IPVS: ftp: loaded support on port[0] = 21 [ 1164.229067][ T7] tipc: TX() has been purged, node left! [ 1165.330718][ T9803] IPVS: ftp: loaded support on port[0] = 21 [ 1165.347140][ T7] tipc: TX() has been purged, node left! [ 1166.533738][ T9831] IPVS: ftp: loaded support on port[0] = 21 [ 1166.546334][ T7] tipc: TX() has been purged, node left! 2020/08/29 11:16:38 executed programs: 98 [ 1167.700558][ T9859] IPVS: ftp: loaded support on port[0] = 21 [ 1167.727001][ T7] tipc: TX() has been purged, node left! [ 1168.895283][ T9887] IPVS: ftp: loaded support on port[0] = 21 [ 1168.931187][ T7] tipc: TX() has been purged, node left! [ 1170.120538][ T9915] IPVS: ftp: loaded support on port[0] = 21 [ 1170.157870][ T7] tipc: TX() has been purged, node left! [ 1171.314817][ T9943] IPVS: ftp: loaded support on port[0] = 21 [ 1171.341467][ T7] tipc: TX() has been purged, node left! [ 1172.483320][ T9971] IPVS: ftp: loaded support on port[0] = 21 [ 1172.510562][ T7] tipc: TX() has been purged, node left! 2020/08/29 11:16:44 executed programs: 103 [ 1173.694732][ T9999] IPVS: ftp: loaded support on port[0] = 21 [ 1173.720120][ T7] tipc: TX() has been purged, node left! [ 1173.958534][ T2546] Bluetooth: hci0: command 0x0406 tx timeout [ 1174.871477][T10027] IPVS: ftp: loaded support on port[0] = 21 [ 1174.887019][ T7] tipc: TX() has been purged, node left! [ 1176.074094][T10055] IPVS: ftp: loaded support on port[0] = 21 [ 1176.107971][ T7] tipc: TX() has been purged, node left! [ 1177.281078][T10083] IPVS: ftp: loaded support on port[0] = 21 [ 1177.318642][ T7] tipc: TX() has been purged, node left! [ 1178.470123][T10111] IPVS: ftp: loaded support on port[0] = 21 [ 1178.499261][ T7155] tipc: TX() has been purged, node left! 2020/08/29 11:16:50 executed programs: 108 [ 1179.663131][T10139] IPVS: ftp: loaded support on port[0] = 21 [ 1179.676992][ T7155] tipc: TX() has been purged, node left! [ 1180.798817][T10167] IPVS: ftp: loaded support on port[0] = 21 [ 1180.828616][ T7155] tipc: TX() has been purged, node left! [ 1181.976579][T10195] IPVS: ftp: loaded support on port[0] = 21 [ 1181.995884][ T7155] tipc: TX() has been purged, node left! [ 1183.131524][T10223] IPVS: ftp: loaded support on port[0] = 21 [ 1183.157232][ T7155] tipc: TX() has been purged, node left! [ 1184.342417][T10251] IPVS: ftp: loaded support on port[0] = 21 [ 1184.355751][ T7155] tipc: TX() has been purged, node left! 2020/08/29 11:16:56 executed programs: 113 [ 1185.475381][T10279] IPVS: ftp: loaded support on port[0] = 21 [ 1185.495796][ T7155] tipc: TX() has been purged, node left! [ 1186.645176][T10307] IPVS: ftp: loaded support on port[0] = 21 [ 1186.659257][ T7155] tipc: TX() has been purged, node left! [ 1187.838053][T10335] IPVS: ftp: loaded support on port[0] = 21 [ 1187.865903][ T7155] tipc: TX() has been purged, node left! [ 1189.005568][T10363] IPVS: ftp: loaded support on port[0] = 21 [ 1189.028392][ T7155] tipc: TX() has been purged, node left! [ 1190.140227][T10391] IPVS: ftp: loaded support on port[0] = 21 [ 1190.176519][ T7] tipc: TX() has been purged, node left! 2020/08/29 11:17:02 executed programs: 118 [ 1191.371408][T10421] IPVS: ftp: loaded support on port[0] = 21 [ 1191.386017][ T7] tipc: TX() has been purged, node left! [ 1192.503034][T10450] IPVS: ftp: loaded support on port[0] = 21 [ 1192.516879][ T7] tipc: TX() has been purged, node left! [ 1193.653195][T10478] IPVS: ftp: loaded support on port[0] = 21 [ 1193.666875][ T7] tipc: TX() has been purged, node left! [ 1194.804988][T10506] IPVS: ftp: loaded support on port[0] = 21 [ 1194.837900][ T7] tipc: TX() has been purged, node left! [ 1196.022435][T10534] IPVS: ftp: loaded support on port[0] = 21 [ 1196.047895][ T7] tipc: TX() has been purged, node left! 2020/08/29 11:17:07 executed programs: 123 [ 1197.198835][T10562] IPVS: ftp: loaded support on port[0] = 21 [ 1197.215034][ T7] tipc: TX() has been purged, node left! [ 1198.349443][T10590] IPVS: ftp: loaded support on port[0] = 21 [ 1198.366551][ T7] tipc: TX() has been purged, node left! [ 1199.528287][T10618] IPVS: ftp: loaded support on port[0] = 21 [ 1199.558978][ T7] tipc: TX() has been purged, node left! [ 1200.707144][T10646] IPVS: ftp: loaded support on port[0] = 21 [ 1200.725350][ T6923] tipc: TX() has been purged, node left! [ 1201.901678][T10674] IPVS: ftp: loaded support on port[0] = 21 [ 1201.916158][ T6923] tipc: TX() has been purged, node left! 2020/08/29 11:17:13 executed programs: 128 [ 1203.049474][T10702] IPVS: ftp: loaded support on port[0] = 21 [ 1203.076795][ T6923] tipc: TX() has been purged, node left! [ 1204.210200][T10730] IPVS: ftp: loaded support on port[0] = 21 [ 1204.226165][ T6923] tipc: TX() has been purged, node left! [ 1205.337629][T10758] IPVS: ftp: loaded support on port[0] = 21 [ 1205.357432][ T6923] tipc: TX() has been purged, node left! [ 1206.539212][T10786] IPVS: ftp: loaded support on port[0] = 21 [ 1206.556044][ T6923] tipc: TX() has been purged, node left! [ 1207.762795][T10814] IPVS: ftp: loaded support on port[0] = 21 [ 1207.776943][ T6923] tipc: TX() has been purged, node left! 2020/08/29 11:17:19 executed programs: 133 [ 1208.964696][T10842] IPVS: ftp: loaded support on port[0] = 21 [ 1208.990645][ T6923] tipc: TX() has been purged, node left! [ 1210.126180][T10870] IPVS: ftp: loaded support on port[0] = 21 [ 1210.145367][ T6923] tipc: TX() has been purged, node left! [ 1211.297618][T10898] IPVS: ftp: loaded support on port[0] = 21 [ 1211.341423][ T6923] tipc: TX() has been purged, node left! [ 1212.464431][T10926] IPVS: ftp: loaded support on port[0] = 21 [ 1212.487547][ T6923] tipc: TX() has been purged, node left! [ 1213.613993][T10954] IPVS: ftp: loaded support on port[0] = 21 [ 1213.627997][ T6923] tipc: TX() has been purged, node left! 2020/08/29 11:17:25 executed programs: 138 [ 1214.802075][T10982] IPVS: ftp: loaded support on port[0] = 21 [ 1214.826595][ T6923] tipc: TX() has been purged, node left! [ 1215.988744][T11010] IPVS: ftp: loaded support on port[0] = 21 [ 1216.018265][ T6923] tipc: TX() has been purged, node left! [ 1217.172289][T11038] IPVS: ftp: loaded support on port[0] = 21 [ 1217.186552][ T6923] tipc: TX() has been purged, node left! [ 1218.294677][T11066] IPVS: ftp: loaded support on port[0] = 21 [ 1218.321580][ T6923] tipc: TX() has been purged, node left! [ 1219.515117][T11094] IPVS: ftp: loaded support on port[0] = 21 [ 1219.529302][ T6923] tipc: TX() has been purged, node left! [ 1220.378570][ T2546] [ 1220.380916][ T2546] ====================================================== [ 1220.387908][ T2546] WARNING: possible circular locking dependency detected [ 1220.394905][ T2546] 5.9.0-rc2-next-20200828-syzkaller #0 Not tainted [ 1220.401414][ T2546] ------------------------------------------------------ [ 1220.408422][ T2546] kworker/0:2/2546 is trying to acquire lock: [ 1220.414468][ T2546] ffff888086a9b750 (&sb->s_type->i_mutex_key#13){+.+.}-{3:3}, at: __sock_release+0x86/0x280 [ 1220.424663][ T2546] [ 1220.424663][ T2546] but task is already holding lock: [ 1220.432036][ T2546] ffffc90008797da8 ((delayed_fput_work).work){+.+.}-{0:0}, at: process_one_work+0x85f/0x1670 [ 1220.442264][ T2546] [ 1220.442264][ T2546] which lock already depends on the new lock. [ 1220.442264][ T2546] [ 1220.452686][ T2546] [ 1220.452686][ T2546] the existing dependency chain (in reverse order) is: [ 1220.461689][ T2546] [ 1220.461689][ T2546] -> #3 ((delayed_fput_work).work){+.+.}-{0:0}: [ 1220.470091][ T2546] process_one_work+0x8bb/0x1670 [ 1220.475525][ T2546] worker_thread+0x64c/0x1120 [ 1220.480698][ T2546] kthread+0x3b5/0x4a0 [ 1220.485325][ T2546] ret_from_fork+0x1f/0x30 [ 1220.490256][ T2546] [ 1220.490256][ T2546] -> #2 ((wq_completion)events){+.+.}-{0:0}: [ 1220.498403][ T2546] flush_workqueue+0x110/0x13e0 [ 1220.503831][ T2546] tipc_exit_net+0x47/0x2a0 [ 1220.508882][ T2546] ops_exit_list+0xb0/0x160 [ 1220.513884][ T2546] cleanup_net+0x4ea/0xb10 [ 1220.519241][ T2546] process_one_work+0x94c/0x1670 [ 1220.524676][ T2546] worker_thread+0x64c/0x1120 [ 1220.529847][ T2546] kthread+0x3b5/0x4a0 [ 1220.534424][ T2546] ret_from_fork+0x1f/0x30 [ 1220.539338][ T2546] [ 1220.539338][ T2546] -> #1 (pernet_ops_rwsem){++++}-{3:3}: [ 1220.547137][ T2546] down_write+0x8d/0x150 [ 1220.551951][ T2546] unregister_netdevice_notifier+0x1e/0x170 [ 1220.558464][ T2546] raw_release+0x58/0x890 [ 1220.563317][ T2546] __sock_release+0xcd/0x280 [ 1220.568421][ T2546] sock_close+0x18/0x20 [ 1220.573201][ T2546] __fput+0x285/0x920 [ 1220.577705][ T2546] task_work_run+0xdd/0x190 [ 1220.582809][ T2546] exit_to_user_mode_prepare+0x195/0x1c0 [ 1220.588995][ T2546] syscall_exit_to_user_mode+0x59/0x2b0 [ 1220.600997][ T2546] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1220.607397][ T2546] [ 1220.607397][ T2546] -> #0 (&sb->s_type->i_mutex_key#13){+.+.}-{3:3}: [ 1220.616180][ T2546] __lock_acquire+0x2a6b/0x5640 [ 1220.621546][ T2546] lock_acquire+0x1f1/0xad0 [ 1220.626559][ T2546] down_write+0x8d/0x150 [ 1220.631314][ T2546] __sock_release+0x86/0x280 [ 1220.636413][ T2546] sock_close+0x18/0x20 [ 1220.641084][ T2546] __fput+0x285/0x920 [ 1220.645574][ T2546] delayed_fput+0x56/0x70 [ 1220.650415][ T2546] process_one_work+0x94c/0x1670 [ 1220.655866][ T2546] worker_thread+0x64c/0x1120 [ 1220.661138][ T2546] kthread+0x3b5/0x4a0 [ 1220.665718][ T2546] ret_from_fork+0x1f/0x30 [ 1220.670634][ T2546] [ 1220.670634][ T2546] other info that might help us debug this: [ 1220.670634][ T2546] [ 1220.680846][ T2546] Chain exists of: [ 1220.680846][ T2546] &sb->s_type->i_mutex_key#13 --> (wq_completion)events --> (delayed_fput_work).work [ 1220.680846][ T2546] [ 1220.696220][ T2546] Possible unsafe locking scenario: [ 1220.696220][ T2546] [ 1220.703666][ T2546] CPU0 CPU1 [ 1220.709020][ T2546] ---- ---- [ 1220.714366][ T2546] lock((delayed_fput_work).work); [ 1220.719548][ T2546] lock((wq_completion)events); [ 1220.727001][ T2546] lock((delayed_fput_work).work); [ 1220.734701][ T2546] lock(&sb->s_type->i_mutex_key#13); [ 1220.740149][ T2546] [ 1220.740149][ T2546] *** DEADLOCK *** [ 1220.740149][ T2546] [ 1220.748291][ T2546] 2 locks held by kworker/0:2/2546: [ 1220.753494][ T2546] #0: ffff8880aa063d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x82b/0x1670 [ 1220.763835][ T2546] #1: ffffc90008797da8 ((delayed_fput_work).work){+.+.}-{0:0}, at: process_one_work+0x85f/0x1670 [ 1220.774444][ T2546] [ 1220.774444][ T2546] stack backtrace: [ 1220.780343][ T2546] CPU: 0 PID: 2546 Comm: kworker/0:2 Not tainted 5.9.0-rc2-next-20200828-syzkaller #0 [ 1220.789862][ T2546] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1220.799909][ T2546] Workqueue: events delayed_fput [ 1220.804891][ T2546] Call Trace: [ 1220.808246][ T2546] dump_stack+0x18f/0x20d [ 1220.812575][ T2546] check_noncircular+0x324/0x3e0 [ 1220.817520][ T2546] ? print_circular_bug+0x3a0/0x3a0 [ 1220.822710][ T2546] ? lock_repin_lock+0x460/0x460 [ 1220.827634][ T2546] ? mark_lock+0xbc/0x1710 [ 1220.832089][ T2546] ? stack_depot_save+0x238/0x400 [ 1220.837117][ T2546] __lock_acquire+0x2a6b/0x5640 [ 1220.841965][ T2546] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 1220.847943][ T2546] ? is_dynamic_key+0x1a0/0x1a0 [ 1220.852794][ T2546] lock_acquire+0x1f1/0xad0 [ 1220.857295][ T2546] ? __sock_release+0x86/0x280 [ 1220.862059][ T2546] ? lock_release+0x8e0/0x8e0 [ 1220.867210][ T2546] ? debug_object_deactivate+0x264/0x300 [ 1220.872850][ T2546] ? lock_is_held_type+0xbb/0xf0 [ 1220.877784][ T2546] down_write+0x8d/0x150 [ 1220.882028][ T2546] ? __sock_release+0x86/0x280 [ 1220.886789][ T2546] ? down_write_killable+0x170/0x170 [ 1220.892125][ T2546] ? locks_remove_file+0x319/0x580 [ 1220.897239][ T2546] ? fcntl_setlk+0xf60/0xf60 [ 1220.901827][ T2546] __sock_release+0x86/0x280 [ 1220.906417][ T2546] sock_close+0x18/0x20 [ 1220.910595][ T2546] __fput+0x285/0x920 [ 1220.914573][ T2546] ? __sock_release+0x280/0x280 [ 1220.919419][ T2546] delayed_fput+0x56/0x70 [ 1220.923751][ T2546] process_one_work+0x94c/0x1670 [ 1220.928691][ T2546] ? lock_release+0x8e0/0x8e0 [ 1220.933400][ T2546] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 1220.938768][ T2546] ? rwlock_bug.part.0+0x90/0x90 [ 1220.943714][ T2546] worker_thread+0x64c/0x1120 [ 1220.948395][ T2546] ? process_one_work+0x1670/0x1670 [ 1220.954552][ T2546] kthread+0x3b5/0x4a0 [ 1220.958621][ T2546] ? __kthread_bind_mask+0xc0/0xc0 [ 1220.963728][ T2546] ? __kthread_bind_mask+0xc0/0xc0 [ 1220.968838][ T2546] ret_from_fork+0x1f/0x30 2020/08/29 11:17:31 executed programs: 143 [ 1221.061402][T11122] IPVS: ftp: loaded support on port[0] = 21 [ 1221.092892][ T6923] tipc: TX() has been purged, node left! [ 1221.771197][T11122] IPVS: ftp: loaded support on port[0] = 21 [ 1221.810247][ T6923] tipc: TX() has been purged, node left! [ 1221.822397][T11170] IPVS: ftp: loaded support on port[0] = 21 [ 1221.829720][ T6923] tipc: TX() has been purged, node left! [ 1222.607709][T11170] IPVS: ftp: loaded support on port[0] = 21 [ 1222.640049][ T6923] tipc: TX() has been purged, node left! [ 1223.352893][T11217] IPVS: ftp: loaded support on port[0] = 21 [ 1223.390283][ T6923] tipc: TX() has been purged, node left! [ 1224.093035][T11217] IPVS: ftp: loaded support on port[0] = 21 [ 1224.124780][ T6923] tipc: TX() has been purged, node left! [ 1224.853709][T11263] IPVS: ftp: loaded support on port[0] = 21 [ 1224.890366][ T7155] tipc: TX() has been purged, node left! [ 1225.579863][T11263] IPVS: ftp: loaded support on port[0] = 21 [ 1225.632661][T11309] IPVS: ftp: loaded support on port[0] = 21 [ 1225.649702][ T7155] tipc: TX() has been purged, node left! [ 1225.655663][ T7155] tipc: TX() has been purged, node left! 2020/08/29 11:17:37 executed programs: 148 [ 1226.415126][T11309] IPVS: ftp: loaded support on port[0] = 21 [ 1226.467857][T11356] IPVS: ftp: loaded support on port[0] = 21 [ 1226.481427][ T7155] tipc: TX() has been purged, node left! [ 1226.489093][ T7155] tipc: TX() has been purged, node left! [ 1227.265012][T11356] IPVS: ftp: loaded support on port[0] = 21 [ 1227.299800][ T7155] tipc: TX() has been purged, node left! [ 1227.323162][T11403] IPVS: ftp: loaded support on port[0] = 21 [ 1228.029668][T11403] IPVS: ftp: loaded support on port[0] = 21 [ 1228.080224][T11449] IPVS: ftp: loaded support on port[0] = 21 [ 1228.086312][ T7155] tipc: TX() has been purged, node left! [ 1228.092274][ T7155] tipc: TX() has been purged, node left! [ 1228.109912][ T7155] tipc: TX() has been purged, node left! [ 1228.907470][T11449] IPVS: ftp: loaded support on port[0] = 21 [ 1228.961984][T11499] IPVS: ftp: loaded support on port[0] = 21 [ 1228.970831][ T7155] tipc: TX() has been purged, node left! [ 1228.977031][ T7155] tipc: TX() has been purged, node left! [ 1229.725129][T11499] IPVS: ftp: loaded support on port[0] = 21 [ 1229.770599][ T7155] tipc: TX() has been purged, node left! [ 1229.776947][ T7155] tipc: TX() has been purged, node left! [ 1229.794243][T11545] IPVS: ftp: loaded support on port[0] = 21