[ 40.383778] audit: type=1800 audit(1555303074.980:33): pid=7201 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 49.248738] random: sshd: uninitialized urandom read (32 bytes read) [ 49.653917] kauditd_printk_skb: 1 callbacks suppressed [ 49.653927] audit: type=1400 audit(1555303084.250:35): avc: denied { map } for pid=7375 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [ 49.713180] random: sshd: uninitialized urandom read (32 bytes read) [ 50.364001] random: sshd: uninitialized urandom read (32 bytes read) [ 954.908323] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.6' (ECDSA) to the list of known hosts. [ 960.633781] random: sshd: uninitialized urandom read (32 bytes read) [ 960.826050] audit: type=1400 audit(1555303995.420:36): avc: denied { map } for pid=7387 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2019/04/15 04:53:16 parsed 1 programs [ 961.594695] audit: type=1400 audit(1555303996.190:37): avc: denied { map } for pid=7387 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=13810 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 [ 962.203935] random: cc1: uninitialized urandom read (8 bytes read) 2019/04/15 04:53:17 executed programs: 0 [ 962.943437] audit: type=1400 audit(1555303997.530:38): avc: denied { map } for pid=7387 comm="syz-execprog" path="/root/syzkaller-shm034314055" dev="sda1" ino=2233 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 963.760627] IPVS: ftp: loaded support on port[0] = 21 [ 964.076567] IPVS: ftp: loaded support on port[0] = 21 [ 964.097470] chnl_net:caif_netlink_parms(): no params data found [ 964.160651] bridge0: port 1(bridge_slave_0) entered blocking state [ 964.167226] bridge0: port 1(bridge_slave_0) entered disabled state [ 964.174603] device bridge_slave_0 entered promiscuous mode [ 964.187306] bridge0: port 2(bridge_slave_1) entered blocking state [ 964.194137] bridge0: port 2(bridge_slave_1) entered disabled state [ 964.201880] device bridge_slave_1 entered promiscuous mode [ 964.223446] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 964.234226] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 964.263768] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 964.271406] IPVS: ftp: loaded support on port[0] = 21 [ 964.271606] team0: Port device team_slave_0 added [ 964.284712] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 964.292108] team0: Port device team_slave_1 added [ 964.309981] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 964.321029] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 964.412738] device hsr_slave_0 entered promiscuous mode [ 964.451155] device hsr_slave_1 entered promiscuous mode [ 964.492709] chnl_net:caif_netlink_parms(): no params data found [ 964.502135] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 964.521300] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 964.541798] IPVS: ftp: loaded support on port[0] = 21 [ 964.568466] bridge0: port 1(bridge_slave_0) entered blocking state [ 964.576779] bridge0: port 1(bridge_slave_0) entered disabled state [ 964.586200] device bridge_slave_0 entered promiscuous mode [ 964.596834] bridge0: port 2(bridge_slave_1) entered blocking state [ 964.603977] bridge0: port 2(bridge_slave_1) entered forwarding state [ 964.611845] bridge0: port 1(bridge_slave_0) entered blocking state [ 964.618597] bridge0: port 1(bridge_slave_0) entered forwarding state [ 964.652395] bridge0: port 2(bridge_slave_1) entered blocking state [ 964.658792] bridge0: port 2(bridge_slave_1) entered disabled state [ 964.667379] device bridge_slave_1 entered promiscuous mode [ 964.693863] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 964.713390] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 964.781922] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 964.789173] team0: Port device team_slave_0 added [ 964.800912] chnl_net:caif_netlink_parms(): no params data found [ 964.825297] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 964.834987] team0: Port device team_slave_1 added [ 964.857927] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 964.865906] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 964.876200] IPVS: ftp: loaded support on port[0] = 21 [ 964.886482] bridge0: port 1(bridge_slave_0) entered blocking state [ 964.893053] bridge0: port 1(bridge_slave_0) entered disabled state [ 964.900650] device bridge_slave_0 entered promiscuous mode [ 964.908214] bridge0: port 2(bridge_slave_1) entered blocking state [ 964.914668] bridge0: port 2(bridge_slave_1) entered disabled state [ 964.921599] device bridge_slave_1 entered promiscuous mode [ 965.013866] device hsr_slave_0 entered promiscuous mode [ 965.051204] device hsr_slave_1 entered promiscuous mode [ 965.097040] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 965.107033] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 965.118664] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 965.126152] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 965.154836] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 965.162419] team0: Port device team_slave_0 added [ 965.168232] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 965.175568] team0: Port device team_slave_1 added [ 965.181775] bridge0: port 1(bridge_slave_0) entered disabled state [ 965.199173] bridge0: port 2(bridge_slave_1) entered disabled state [ 965.215136] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 965.232183] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 965.241318] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 965.303033] device hsr_slave_0 entered promiscuous mode [ 965.350571] device hsr_slave_1 entered promiscuous mode [ 965.397881] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 965.405147] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 965.432440] 8021q: adding VLAN 0 to HW filter on device bond0 [ 965.462413] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 965.471630] IPVS: ftp: loaded support on port[0] = 21 [ 965.531401] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 965.575800] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 965.585065] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 965.597573] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 965.627252] 8021q: adding VLAN 0 to HW filter on device bond0 [ 965.642747] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 965.650600] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 965.656674] 8021q: adding VLAN 0 to HW filter on device team0 [ 965.672807] chnl_net:caif_netlink_parms(): no params data found [ 965.684753] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 965.691498] chnl_net:caif_netlink_parms(): no params data found [ 965.702449] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 965.730999] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 965.738148] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 965.745129] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 965.753261] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 965.760919] bridge0: port 1(bridge_slave_0) entered blocking state [ 965.767402] bridge0: port 1(bridge_slave_0) entered forwarding state [ 965.784063] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 965.791819] 8021q: adding VLAN 0 to HW filter on device team0 [ 965.823776] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 965.865735] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 965.873616] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 965.881374] bridge0: port 2(bridge_slave_1) entered blocking state [ 965.887715] bridge0: port 2(bridge_slave_1) entered forwarding state [ 965.897571] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 965.906263] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 965.932616] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 965.940484] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 965.948104] bridge0: port 1(bridge_slave_0) entered blocking state [ 965.954498] bridge0: port 1(bridge_slave_0) entered forwarding state [ 965.962442] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 965.972020] bridge0: port 1(bridge_slave_0) entered blocking state [ 965.978392] bridge0: port 1(bridge_slave_0) entered disabled state [ 965.985678] device bridge_slave_0 entered promiscuous mode [ 965.992697] bridge0: port 2(bridge_slave_1) entered blocking state [ 965.999068] bridge0: port 2(bridge_slave_1) entered disabled state [ 966.008059] device bridge_slave_1 entered promiscuous mode [ 966.024485] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 966.035089] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 966.044886] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 966.063090] bridge0: port 1(bridge_slave_0) entered blocking state [ 966.069467] bridge0: port 1(bridge_slave_0) entered disabled state [ 966.076715] device bridge_slave_0 entered promiscuous mode [ 966.083478] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 966.091734] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 966.104811] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 966.112464] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 966.120384] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 966.142203] bridge0: port 2(bridge_slave_1) entered blocking state [ 966.148613] bridge0: port 2(bridge_slave_1) entered disabled state [ 966.157011] device bridge_slave_1 entered promiscuous mode [ 966.163989] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 966.172545] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 966.180929] bridge0: port 2(bridge_slave_1) entered blocking state [ 966.187343] bridge0: port 2(bridge_slave_1) entered forwarding state [ 966.197169] 8021q: adding VLAN 0 to HW filter on device bond0 [ 966.204887] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 966.218991] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 966.235175] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 966.244725] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 966.251500] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 966.259219] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 966.267375] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 966.279625] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 966.287894] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 966.310993] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 966.320531] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 966.353015] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 966.373169] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 966.380894] team0: Port device team_slave_0 added [ 966.387060] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 966.425319] IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready [ 966.432510] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 966.439793] team0: Port device team_slave_1 added [ 966.445314] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 966.453162] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 966.460396] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 966.467215] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 966.474908] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 966.484834] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 966.491324] 8021q: adding VLAN 0 to HW filter on device team0 [ 966.497713] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 966.505359] team0: Port device team_slave_0 added [ 966.511074] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 966.518301] team0: Port device team_slave_1 added [ 966.524226] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 966.533808] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 966.546377] IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready [ 966.553390] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 966.571274] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 966.579305] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 966.587000] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 966.594905] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 966.602485] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 966.610489] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 966.617914] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 966.625438] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 966.632778] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 966.640605] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 966.648119] bridge0: port 1(bridge_slave_0) entered blocking state [ 966.654535] bridge0: port 1(bridge_slave_0) entered forwarding state [ 966.661377] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 966.668317] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 966.675542] chnl_net:caif_netlink_parms(): no params data found [ 966.687070] IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready [ 966.694287] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 966.753777] device hsr_slave_0 entered promiscuous mode [ 966.800662] device hsr_slave_1 entered promiscuous mode [ 966.865888] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 966.872729] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 966.881414] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 966.889082] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 966.908723] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 966.926905] IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready [ 966.935095] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 966.941207] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 966.955975] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 966.963768] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 966.972080] bridge0: port 2(bridge_slave_1) entered blocking state [ 966.978426] bridge0: port 2(bridge_slave_1) entered forwarding state [ 966.985398] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 966.993117] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 967.004630] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 967.013512] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 967.019530] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 967.063754] device hsr_slave_0 entered promiscuous mode [ 967.100269] device hsr_slave_1 entered promiscuous mode [ 967.140406] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 967.148610] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 967.160606] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 967.169504] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 967.179252] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 967.188309] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 967.199282] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 967.232754] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 967.240772] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 967.248620] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 967.262965] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 967.271310] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 967.286776] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 967.307142] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 967.321042] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 967.327405] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 967.335530] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 967.343617] bridge0: port 1(bridge_slave_0) entered blocking state [ 967.350917] bridge0: port 1(bridge_slave_0) entered disabled state [ 967.357897] device bridge_slave_0 entered promiscuous mode [ 967.366225] bridge0: port 2(bridge_slave_1) entered blocking state [ 967.373240] bridge0: port 2(bridge_slave_1) entered disabled state [ 967.380518] device bridge_slave_1 entered promiscuous mode [ 967.404042] IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready [ 967.427017] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 967.437356] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 967.448700] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 967.462068] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 967.471312] IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready [ 967.479419] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 967.491287] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 967.497364] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 967.509096] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 967.522825] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 967.531923] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 967.549701] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 967.586133] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 967.611164] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 967.618445] team0: Port device team_slave_0 added [ 967.647899] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 967.658910] team0: Port device team_slave_1 added [ 967.691497] 8021q: adding VLAN 0 to HW filter on device bond0 [ 967.713945] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 967.743584] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 967.752373] 8021q: adding VLAN 0 to HW filter on device bond0 [ 967.758673] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 967.772779] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 967.781766] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 967.790606] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 967.813914] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 967.821419] 8021q: adding VLAN 0 to HW filter on device team0 [ 967.887691] device hsr_slave_0 entered promiscuous mode [ 967.940840] device hsr_slave_1 entered promiscuous mode [ 967.992659] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 967.999713] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 968.008423] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 968.016199] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 968.024665] bridge0: port 1(bridge_slave_0) entered blocking state [ 968.031068] bridge0: port 1(bridge_slave_0) entered forwarding state 2019/04/15 04:53:22 executed programs: 10 [ 968.038787] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 968.046701] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 968.065886] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 968.076021] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 968.084478] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 968.091591] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 968.115623] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 968.124683] 8021q: adding VLAN 0 to HW filter on device team0 [ 968.133447] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 968.142034] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 968.149585] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 968.157425] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 968.165293] bridge0: port 2(bridge_slave_1) entered blocking state [ 968.171685] bridge0: port 2(bridge_slave_1) entered forwarding state [ 968.185373] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 968.198144] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 968.206624] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 968.214530] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 968.222331] bridge0: port 1(bridge_slave_0) entered blocking state [ 968.228674] bridge0: port 1(bridge_slave_0) entered forwarding state [ 968.235746] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 968.244468] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 968.252257] bridge0: port 2(bridge_slave_1) entered blocking state [ 968.258580] bridge0: port 2(bridge_slave_1) entered forwarding state [ 968.265478] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 968.280947] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 968.289101] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 968.296059] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 968.303934] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 968.315212] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 968.325264] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 968.335928] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 968.350109] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 968.357692] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 968.366283] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 968.375286] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 968.383725] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 968.392317] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 968.399987] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 968.407925] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 968.417853] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 968.432332] IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready [ 968.443439] IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready [ 968.450677] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 968.460878] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 968.468374] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 968.476401] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 968.484458] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 968.492100] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 968.499429] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 968.510528] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 968.518873] IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready [ 968.529608] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 968.537280] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 968.545092] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 968.553592] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 968.566066] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 968.572260] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 968.581269] IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready [ 968.593497] 8021q: adding VLAN 0 to HW filter on device bond0 [ 968.601901] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 968.609645] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 968.619845] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 968.626298] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 968.634284] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 968.646950] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 968.657268] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 968.663634] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 968.671309] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 968.684574] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 968.690933] 8021q: adding VLAN 0 to HW filter on device team0 [ 968.704363] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 968.713359] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 968.725389] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 968.733723] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 968.742100] bridge0: port 1(bridge_slave_0) entered blocking state [ 968.748464] bridge0: port 1(bridge_slave_0) entered forwarding state [ 968.756364] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 968.764054] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 968.774777] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 968.786395] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 968.796079] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 968.805174] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 968.813223] bridge0: port 2(bridge_slave_1) entered blocking state [ 968.819557] bridge0: port 2(bridge_slave_1) entered forwarding state [ 968.826594] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 968.837786] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 968.849095] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 968.857228] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 968.865467] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 968.873097] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 968.881639] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 968.891426] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 968.903671] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 968.914820] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 968.925769] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 968.939606] IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready [ 968.952269] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 968.965443] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 968.976895] IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready [ 968.984655] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 968.992447] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 969.003665] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 969.009893] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 969.025499] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 969.035984] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 1144.800566] INFO: task syz-executor.4:7410 blocked for more than 140 seconds. [ 1144.808091] Not tainted 4.14.111 #1 [ 1144.812532] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1144.820717] syz-executor.4 D24992 7410 1 0x00000004 [ 1144.826534] Call Trace: [ 1144.829257] __schedule+0x7be/0x1cf0 [ 1144.833063] ? __mutex_lock+0x737/0x1470 [ 1144.837280] ? pci_mmcfg_check_reserved+0x150/0x150 [ 1144.842382] schedule+0x92/0x1c0 [ 1144.845760] schedule_preempt_disabled+0x13/0x20 [ 1144.850878] __mutex_lock+0x73c/0x1470 [ 1144.854812] ? trace_hardirqs_on+0x10/0x10 [ 1144.859517] ? lo_open+0x1d/0xb0 [ 1144.864512] ? refcount_inc_not_zero+0x80/0xe0 [ 1144.871635] ? mutex_trylock+0x1c0/0x1c0 [ 1144.875876] ? find_held_lock+0x35/0x130 [ 1144.880168] ? disk_get_part+0x9c/0x140 [ 1144.884607] ? lock_downgrade+0x6e0/0x6e0 [ 1144.888761] ? loop_unregister_transfer+0x90/0x90 [ 1144.894163] mutex_lock_nested+0x16/0x20 [ 1144.898970] ? mutex_lock_nested+0x16/0x20 [ 1144.905430] lo_open+0x1d/0xb0 [ 1144.908655] __blkdev_get+0x2c9/0x1120 [ 1144.912968] ? __blkdev_put+0x7f0/0x7f0 [ 1144.916936] ? bd_acquire+0x178/0x2c0 [ 1144.920781] ? find_held_lock+0x35/0x130 [ 1144.924836] blkdev_get+0xa8/0x8e0 [ 1144.928405] ? bd_may_claim+0xd0/0xd0 [ 1144.932265] ? _raw_spin_unlock+0x2d/0x50 [ 1144.936487] blkdev_open+0x1d1/0x260 [ 1144.940259] ? security_file_open+0x8f/0x1a0 [ 1144.944677] do_dentry_open+0x73e/0xeb0 [ 1144.948642] ? bd_acquire+0x2c0/0x2c0 [ 1144.952513] vfs_open+0x105/0x230 [ 1144.955979] path_openat+0x8bd/0x3f70 [ 1144.959772] ? trace_hardirqs_on+0x10/0x10 [ 1144.964094] ? path_lookupat.isra.0+0x7b0/0x7b0 [ 1144.968874] ? find_held_lock+0x35/0x130 [ 1144.973045] ? __alloc_fd+0x1d4/0x4a0 [ 1144.976977] do_filp_open+0x18e/0x250 [ 1144.980863] ? may_open_dev+0xe0/0xe0 [ 1144.984754] ? _raw_spin_unlock+0x2d/0x50 [ 1144.988932] ? __alloc_fd+0x1d4/0x4a0 [ 1144.992836] do_sys_open+0x2c5/0x430 [ 1144.996640] ? filp_open+0x70/0x70 [ 1145.000249] SyS_open+0x2d/0x40 [ 1145.003522] ? do_sys_open+0x430/0x430 [ 1145.007431] do_syscall_64+0x1eb/0x630 [ 1145.011401] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1145.016249] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1145.021568] RIP: 0033:0x412ba0 [ 1145.024757] RSP: 002b:00007ffe25722dd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 1145.032526] RAX: ffffffffffffffda RBX: 00000000000ec57c RCX: 0000000000412ba0 [ 1145.039900] RDX: 00007ffe25722e6a RSI: 0000000000000002 RDI: 00007ffe25722e60 [ 1145.047363] RBP: 0000000000000003 R08: 0000000000000000 R09: 000000000000000a [ 1145.054667] R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000000 [ 1145.061994] R13: 00007ffe25722e10 R14: 00000000000ec4c7 R15: 00007ffe25722e20 [ 1145.069273] INFO: task syz-executor.0:7412 blocked for more than 140 seconds. [ 1145.076586] Not tainted 4.14.111 #1 [ 1145.080745] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.088703] syz-executor.0 D24992 7412 1 0x00000004 [ 1145.094406] Call Trace: [ 1145.097025] __schedule+0x7be/0x1cf0 [ 1145.100762] ? __mutex_lock+0x737/0x1470 [ 1145.104935] ? pci_mmcfg_check_reserved+0x150/0x150 [ 1145.109967] schedule+0x92/0x1c0 [ 1145.113545] schedule_preempt_disabled+0x13/0x20 [ 1145.118302] __mutex_lock+0x73c/0x1470 [ 1145.122771] ? __mutex_unlock_slowpath+0x71/0x800 [ 1145.127704] ? __blkdev_get+0x145/0x1120 [ 1145.131806] ? mutex_trylock+0x1c0/0x1c0 [ 1145.135866] ? exact_match+0xd/0x20 [ 1145.139661] ? kobj_lookup+0x319/0x410 [ 1145.143621] ? blkdev_ioctl+0x1880/0x1880 [ 1145.147854] mutex_lock_nested+0x16/0x20 [ 1145.151945] ? mutex_lock_nested+0x16/0x20 [ 1145.156188] __blkdev_get+0x145/0x1120 [ 1145.160115] ? __blkdev_put+0x7f0/0x7f0 [ 1145.164086] ? bd_acquire+0x178/0x2c0 [ 1145.167883] ? find_held_lock+0x35/0x130 [ 1145.172027] blkdev_get+0xa8/0x8e0 [ 1145.175565] ? bd_may_claim+0xd0/0xd0 [ 1145.179351] ? _raw_spin_unlock+0x2d/0x50 [ 1145.183548] blkdev_open+0x1d1/0x260 [ 1145.187257] ? security_file_open+0x8f/0x1a0 [ 1145.191710] do_dentry_open+0x73e/0xeb0 [ 1145.195674] ? bd_acquire+0x2c0/0x2c0 [ 1145.199455] vfs_open+0x105/0x230 [ 1145.202954] path_openat+0x8bd/0x3f70 [ 1145.206767] ? path_lookupat.isra.0+0x7b0/0x7b0 [ 1145.211684] ? __alloc_fd+0x1d4/0x4a0 [ 1145.215478] do_filp_open+0x18e/0x250 [ 1145.219267] ? may_open_dev+0xe0/0xe0 [ 1145.223134] ? _raw_spin_unlock+0x2d/0x50 [ 1145.227382] ? __alloc_fd+0x1d4/0x4a0 [ 1145.231275] do_sys_open+0x2c5/0x430 [ 1145.235108] ? filp_open+0x70/0x70 [ 1145.238635] SyS_open+0x2d/0x40 [ 1145.242045] ? do_sys_open+0x430/0x430 [ 1145.245941] do_syscall_64+0x1eb/0x630 [ 1145.249824] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1145.254735] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1145.259919] RIP: 0033:0x412ba0 [ 1145.263143] RSP: 002b:00007ffee0d4bf38 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 1145.271187] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000412ba0 [ 1145.278449] RDX: 00007ffee0d4bfca RSI: 0000000000000002 RDI: 00007ffee0d4bfc0 [ 1145.285901] RBP: 000000000070e4e0 R08: 0000000000000000 R09: 000000000000000a [ 1145.293214] R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000000 [ 1145.300620] R13: 00007ffee0d4bf70 R14: 0000000000000003 R15: 00007ffee0d4bf80 [ 1145.307910] INFO: task syz-executor.1:7414 blocked for more than 140 seconds. [ 1145.315331] Not tainted 4.14.111 #1 [ 1145.319466] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.327526] syz-executor.1 D24992 7414 1 0x00000004 [ 1145.333370] Call Trace: [ 1145.335943] __schedule+0x7be/0x1cf0 [ 1145.339649] ? __mutex_lock+0x737/0x1470 [ 1145.343747] ? pci_mmcfg_check_reserved+0x150/0x150 [ 1145.348755] schedule+0x92/0x1c0 [ 1145.352162] schedule_preempt_disabled+0x13/0x20 [ 1145.357123] __mutex_lock+0x73c/0x1470 [ 1145.361042] ? trace_hardirqs_on+0x10/0x10 [ 1145.365270] ? lo_open+0x1d/0xb0 [ 1145.368625] ? refcount_inc_not_zero+0x80/0xe0 [ 1145.373401] ? mutex_trylock+0x1c0/0x1c0 [ 1145.377581] ? find_held_lock+0x35/0x130 [ 1145.381677] ? disk_get_part+0x9c/0x140 [ 1145.385752] ? lock_downgrade+0x6e0/0x6e0 [ 1145.389898] ? loop_unregister_transfer+0x90/0x90 [ 1145.394841] mutex_lock_nested+0x16/0x20 [ 1145.398899] ? mutex_lock_nested+0x16/0x20 [ 1145.403183] lo_open+0x1d/0xb0 [ 1145.406373] __blkdev_get+0x2c9/0x1120 [ 1145.410382] ? __blkdev_put+0x7f0/0x7f0 [ 1145.414358] ? bd_acquire+0x178/0x2c0 [ 1145.418166] ? find_held_lock+0x35/0x130 [ 1145.422252] blkdev_get+0xa8/0x8e0 [ 1145.425785] ? bd_may_claim+0xd0/0xd0 [ 1145.429620] ? _raw_spin_unlock+0x2d/0x50 [ 1145.433822] blkdev_open+0x1d1/0x260 [ 1145.437522] ? security_file_open+0x8f/0x1a0 [ 1145.441976] do_dentry_open+0x73e/0xeb0 [ 1145.445992] ? bd_acquire+0x2c0/0x2c0 [ 1145.449783] vfs_open+0x105/0x230 [ 1145.453291] path_openat+0x8bd/0x3f70 [ 1145.457170] ? path_lookupat.isra.0+0x7b0/0x7b0 [ 1145.461875] ? __alloc_fd+0x1d4/0x4a0 [ 1145.465670] do_filp_open+0x18e/0x250 [ 1145.469459] ? may_open_dev+0xe0/0xe0 [ 1145.473325] ? _raw_spin_unlock+0x2d/0x50 [ 1145.477546] ? __alloc_fd+0x1d4/0x4a0 [ 1145.481385] do_sys_open+0x2c5/0x430 [ 1145.485101] ? filp_open+0x70/0x70 [ 1145.488631] SyS_open+0x2d/0x40 [ 1145.491981] ? do_sys_open+0x430/0x430 [ 1145.495857] do_syscall_64+0x1eb/0x630 [ 1145.499721] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1145.504724] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1145.509919] RIP: 0033:0x412ba0 [ 1145.513332] RSP: 002b:00007fff9648c318 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 1145.521065] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000412ba0 [ 1145.528323] RDX: 00007fff9648c3aa RSI: 0000000000000002 RDI: 00007fff9648c3a0 [ 1145.535749] RBP: 000000000070e4e0 R08: 0000000000000000 R09: 000000000000000a [ 1145.543087] R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000000 [ 1145.550419] R13: 00007fff9648c350 R14: 0000000000000003 R15: 00007fff9648c360 [ 1145.557738] INFO: task syz-executor.5:7415 blocked for more than 140 seconds. [ 1145.565086] Not tainted 4.14.111 #1 [ 1145.569267] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.577321] syz-executor.5 D25168 7415 1 0x00000004 [ 1145.583005] Call Trace: [ 1145.585591] __schedule+0x7be/0x1cf0 [ 1145.589294] ? __mutex_lock+0x737/0x1470 [ 1145.593457] ? pci_mmcfg_check_reserved+0x150/0x150 [ 1145.598476] schedule+0x92/0x1c0 [ 1145.601905] schedule_preempt_disabled+0x13/0x20 [ 1145.606657] __mutex_lock+0x73c/0x1470 [ 1145.610598] ? trace_hardirqs_on+0x10/0x10 [ 1145.614818] ? lo_open+0x1d/0xb0 [ 1145.618165] ? refcount_inc_not_zero+0x80/0xe0 [ 1145.622829] ? mutex_trylock+0x1c0/0x1c0 [ 1145.626882] ? find_held_lock+0x35/0x130 [ 1145.631019] ? disk_get_part+0x9c/0x140 [ 1145.635079] ? lock_downgrade+0x6e0/0x6e0 [ 1145.639224] ? loop_unregister_transfer+0x90/0x90 [ 1145.644154] mutex_lock_nested+0x16/0x20 [ 1145.648230] ? mutex_lock_nested+0x16/0x20 [ 1145.652556] lo_open+0x1d/0xb0 [ 1145.655750] __blkdev_get+0x2c9/0x1120 [ 1145.659635] ? __blkdev_put+0x7f0/0x7f0 [ 1145.663686] ? bd_acquire+0x178/0x2c0 [ 1145.667475] ? find_held_lock+0x35/0x130 [ 1145.671603] blkdev_get+0xa8/0x8e0 [ 1145.675135] ? bd_may_claim+0xd0/0xd0 [ 1145.678920] ? _raw_spin_unlock+0x2d/0x50 [ 1145.683116] blkdev_open+0x1d1/0x260 [ 1145.686820] ? security_file_open+0x8f/0x1a0 [ 1145.691350] do_dentry_open+0x73e/0xeb0 [ 1145.695317] ? bd_acquire+0x2c0/0x2c0 [ 1145.699112] vfs_open+0x105/0x230 [ 1145.702626] path_openat+0x8bd/0x3f70 [ 1145.706421] ? path_lookupat.isra.0+0x7b0/0x7b0 [ 1145.711239] ? __alloc_fd+0x1d4/0x4a0 [ 1145.715107] do_filp_open+0x18e/0x250 [ 1145.718975] ? may_open_dev+0xe0/0xe0 [ 1145.722859] ? _raw_spin_unlock+0x2d/0x50 [ 1145.727043] ? __alloc_fd+0x1d4/0x4a0 [ 1145.730987] do_sys_open+0x2c5/0x430 [ 1145.734781] ? filp_open+0x70/0x70 [ 1145.738324] SyS_open+0x2d/0x40 [ 1145.741663] ? do_sys_open+0x430/0x430 [ 1145.745556] do_syscall_64+0x1eb/0x630 [ 1145.749482] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1145.754407] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1145.759601] RIP: 0033:0x412ba0 [ 1145.763000] RSP: 002b:00007ffd6001d888 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 1145.770768] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000412ba0 [ 1145.778048] RDX: 00007ffd6001d91a RSI: 0000000000000002 RDI: 00007ffd6001d910 [ 1145.785399] RBP: 000000000070e4e0 R08: 0000000000000000 R09: 000000000000000a [ 1145.792832] R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000000 [ 1145.800192] R13: 00007ffd6001d8c0 R14: 0000000000000003 R15: 00007ffd6001d8d0 [ 1145.807491] INFO: task blkid:7470 blocked for more than 140 seconds. [ 1145.814053] Not tainted 4.14.111 #1 [ 1145.818190] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.826207] blkid D28512 7470 7372 0x00000004 [ 1145.831880] Call Trace: [ 1145.834457] __schedule+0x7be/0x1cf0 [ 1145.838148] ? __mutex_lock+0x737/0x1470 [ 1145.842332] ? pci_mmcfg_check_reserved+0x150/0x150 [ 1145.847348] schedule+0x92/0x1c0 [ 1145.850759] schedule_preempt_disabled+0x13/0x20 [ 1145.855498] __mutex_lock+0x73c/0x1470 [ 1145.859447] ? trace_hardirqs_on+0x10/0x10 [ 1145.863760] ? lo_release+0x84/0x1b0 [ 1145.867753] ? save_trace+0x1f1/0x290 [ 1145.871636] ? mutex_trylock+0x1c0/0x1c0 [ 1145.875695] ? __blkdev_put+0x397/0x7f0 [ 1145.879653] ? find_held_lock+0x35/0x130 [ 1145.883759] ? __blkdev_put+0x397/0x7f0 [ 1145.887726] ? loop_clr_fd+0xae0/0xae0 [ 1145.891655] mutex_lock_nested+0x16/0x20 [ 1145.895709] ? mutex_lock_nested+0x16/0x20 [ 1145.899926] lo_release+0x84/0x1b0 [ 1145.903584] ? loop_clr_fd+0xae0/0xae0 [ 1145.907488] __blkdev_put+0x436/0x7f0 [ 1145.911332] ? bd_set_size+0xb0/0xb0 [ 1145.915032] ? wait_for_completion+0x420/0x420 [ 1145.919595] blkdev_put+0x88/0x510 [ 1145.923209] ? fcntl_setlk+0xb90/0xb90 [ 1145.927098] ? blkdev_put+0x510/0x510 [ 1145.930954] blkdev_close+0x8b/0xb0 [ 1145.934586] __fput+0x277/0x7a0 [ 1145.937846] ____fput+0x16/0x20 [ 1145.941168] task_work_run+0x119/0x190 [ 1145.945123] exit_to_usermode_loop+0x1da/0x220 [ 1145.949695] do_syscall_64+0x4a9/0x630 [ 1145.953658] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1145.958510] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1145.963752] RIP: 0033:0x7fed8c0122b0 [ 1145.967455] RSP: 002b:00007ffc19276a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 [ 1145.975193] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fed8c0122b0 [ 1145.982465] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 1145.989725] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001 [ 1145.997070] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000001249030 [ 1146.004427] R13: 0000000000000000 R14: 0000000000000003 R15: 0000000000000005 [ 1146.011941] INFO: task syz-executor.3:7473 blocked for more than 140 seconds. [ 1146.019332] Not tainted 4.14.111 #1 [ 1146.023561] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1146.031541] syz-executor.3 D28400 7473 7407 0x00000004 [ 1146.037180] Call Trace: [ 1146.039756] __schedule+0x7be/0x1cf0 [ 1146.043513] ? __mutex_lock+0x737/0x1470 [ 1146.047559] ? pci_mmcfg_check_reserved+0x150/0x150 [ 1146.052614] schedule+0x92/0x1c0 [ 1146.055971] schedule_preempt_disabled+0x13/0x20 [ 1146.060745] __mutex_lock+0x73c/0x1470 [ 1146.064618] ? blkdev_reread_part+0x1f/0x40 [ 1146.068914] ? mutex_trylock+0x1c0/0x1c0 [ 1146.072999] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1146.078100] ? __wake_up_common_lock+0xe3/0x160 [ 1146.082915] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 1146.088006] mutex_lock_nested+0x16/0x20 [ 1146.092102] ? mutex_lock_nested+0x16/0x20 [ 1146.096325] blkdev_reread_part+0x1f/0x40 [ 1146.100502] loop_reread_partitions+0x7c/0x90 [ 1146.104991] loop_set_status+0xc28/0x1200 [ 1146.109130] loop_set_status64+0xa6/0xf0 [ 1146.113235] ? loop_set_status_old+0x2d0/0x2d0 [ 1146.117920] ? ns_capable_common+0x12c/0x160 [ 1146.122363] lo_ioctl+0x5c1/0x1c70 [ 1146.125885] ? trace_hardirqs_on+0x10/0x10 [ 1146.130219] ? loop_probe+0x160/0x160 [ 1146.134020] blkdev_ioctl+0x983/0x1880 [ 1146.137901] ? blkpg_ioctl+0x980/0x980 [ 1146.141822] ? __might_fault+0x110/0x1d0 [ 1146.145868] ? __might_sleep+0x93/0xb0 [ 1146.149733] block_ioctl+0xde/0x120 [ 1146.153396] ? blkdev_fallocate+0x3b0/0x3b0 [ 1146.157705] do_vfs_ioctl+0x7b9/0x1070 [ 1146.161638] ? selinux_file_mprotect+0x5d0/0x5d0 [ 1146.166390] ? ioctl_preallocate+0x1c0/0x1c0 [ 1146.170850] ? put_timespec64+0xb4/0x100 [ 1146.174899] ? nsecs_to_jiffies+0x30/0x30 [ 1146.179026] ? security_file_ioctl+0x83/0xc0 [ 1146.183456] ? security_file_ioctl+0x8f/0xc0 [ 1146.187858] SyS_ioctl+0x8f/0xc0 [ 1146.191268] ? do_vfs_ioctl+0x1070/0x1070 [ 1146.195409] do_syscall_64+0x1eb/0x630 [ 1146.199289] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1146.204221] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1146.209429] RIP: 0033:0x458c29 [ 1146.212871] RSP: 002b:00007ffd12e1adf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 1146.220619] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458c29 [ 1146.227876] RDX: 0000000020000380 RSI: 0000000000004c04 RDI: 0000000000000003 [ 1146.235386] RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 [ 1146.242839] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000018fd914 [ 1146.250141] R13: 00000000004c2009 R14: 00000000004d48f8 R15: 00000000ffffffff [ 1146.257603] INFO: task syz-executor.2:7474 blocked for more than 140 seconds. [ 1146.264981] Not tainted 4.14.111 #1 [ 1146.269245] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1146.277333] syz-executor.2 D28368 7474 7408 0x00000004 [ 1146.283069] Call Trace: [ 1146.285661] __schedule+0x7be/0x1cf0 [ 1146.289374] ? __mutex_lock+0x737/0x1470 [ 1146.293642] ? pci_mmcfg_check_reserved+0x150/0x150 [ 1146.298678] schedule+0x92/0x1c0 [ 1146.302245] schedule_preempt_disabled+0x13/0x20 [ 1146.307020] __mutex_lock+0x73c/0x1470 [ 1146.310997] ? _raw_spin_unlock+0x2d/0x50 [ 1146.315161] ? lo_open+0x1d/0xb0 [ 1146.318540] ? mutex_trylock+0x1c0/0x1c0 [ 1146.322720] ? exact_match+0xd/0x20 [ 1146.326363] ? kobj_lookup+0x319/0x410 [ 1146.330367] ? loop_unregister_transfer+0x90/0x90 [ 1146.335290] mutex_lock_nested+0x16/0x20 [ 1146.339356] ? mutex_lock_nested+0x16/0x20 [ 1146.343669] lo_open+0x1d/0xb0 [ 1146.347636] __blkdev_get+0xab1/0x1120 [ 1146.351694] ? __blkdev_put+0x7f0/0x7f0 [ 1146.355718] ? bd_acquire+0x178/0x2c0 [ 1146.359528] ? find_held_lock+0x35/0x130 [ 1146.363671] blkdev_get+0xa8/0x8e0 [ 1146.367206] ? bd_may_claim+0xd0/0xd0 [ 1146.371055] ? _raw_spin_unlock+0x2d/0x50 [ 1146.375302] blkdev_open+0x1d1/0x260 [ 1146.379013] ? security_file_open+0x8f/0x1a0 [ 1146.383511] do_dentry_open+0x73e/0xeb0 [ 1146.387481] ? bd_acquire+0x2c0/0x2c0 [ 1146.391336] vfs_open+0x105/0x230 [ 1146.394993] path_openat+0x8bd/0x3f70 [ 1146.399018] ? trace_hardirqs_on+0x10/0x10 [ 1146.403381] ? path_lookupat.isra.0+0x7b0/0x7b0 [ 1146.408058] ? find_held_lock+0x35/0x130 [ 1146.412207] ? __alloc_fd+0x1d4/0x4a0 [ 1146.416066] do_filp_open+0x18e/0x250 [ 1146.419897] ? may_open_dev+0xe0/0xe0 [ 1146.423763] ? _raw_spin_unlock+0x2d/0x50 [ 1146.427905] ? __alloc_fd+0x1d4/0x4a0 [ 1146.431789] do_sys_open+0x2c5/0x430 [ 1146.435501] ? filp_open+0x70/0x70 [ 1146.439021] SyS_open+0x2d/0x40 [ 1146.442326] ? do_sys_open+0x430/0x430 [ 1146.446194] do_syscall_64+0x1eb/0x630 [ 1146.450131] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1146.455017] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1146.460249] RIP: 0033:0x412ba0 [ 1146.463427] RSP: 002b:00007fffa528bbc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 1146.471171] RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 0000000000412ba0 [ 1146.478422] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fffa528bc70 [ 1146.485733] RBP: 000000000073bf00 R08: 000000000000000f R09: 0000000000000000 [ 1146.493093] R10: 0000000000740090 R11: 0000000000000246 R12: 0000000001195914 [ 1146.500393] R13: 00000000004c79c8 R14: 00000000004dda60 R15: 00000000ffffffff [ 1146.507725] INFO: task blkid:7475 blocked for more than 140 seconds. [ 1146.514265] Not tainted 4.14.111 #1 [ 1146.518405] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1146.526447] blkid D28368 7475 7455 0x00000004 [ 1146.532281] Call Trace: [ 1146.534916] __schedule+0x7be/0x1cf0 [ 1146.538707] ? __mutex_lock+0x737/0x1470 [ 1146.543036] ? pci_mmcfg_check_reserved+0x150/0x150 [ 1146.548067] schedule+0x92/0x1c0 [ 1146.551492] schedule_preempt_disabled+0x13/0x20 [ 1146.556244] __mutex_lock+0x73c/0x1470 [ 1146.560310] ? trace_hardirqs_on+0x10/0x10 [ 1146.564556] ? lo_open+0x1d/0xb0 [ 1146.567931] ? refcount_inc_not_zero+0x80/0xe0 [ 1146.572591] ? mutex_trylock+0x1c0/0x1c0 [ 1146.576654] ? find_held_lock+0x35/0x130 [ 1146.580762] ? disk_get_part+0x9c/0x140 [ 1146.584745] ? lock_downgrade+0x6e0/0x6e0 [ 1146.589120] ? loop_unregister_transfer+0x90/0x90 [ 1146.594048] mutex_lock_nested+0x16/0x20 [ 1146.598098] ? mutex_lock_nested+0x16/0x20 [ 1146.602400] lo_open+0x1d/0xb0 [ 1146.605585] __blkdev_get+0x2c9/0x1120 [ 1146.609550] ? __blkdev_put+0x7f0/0x7f0 [ 1146.613612] ? bd_acquire+0x178/0x2c0 [ 1146.617412] ? find_held_lock+0x35/0x130 [ 1146.621610] blkdev_get+0xa8/0x8e0 [ 1146.625194] ? bd_may_claim+0xd0/0xd0 [ 1146.628993] ? _raw_spin_unlock+0x2d/0x50 [ 1146.633201] blkdev_open+0x1d1/0x260 [ 1146.636900] ? security_file_open+0x8f/0x1a0 [ 1146.641371] do_dentry_open+0x73e/0xeb0 [ 1146.645337] ? bd_acquire+0x2c0/0x2c0 [ 1146.649130] vfs_open+0x105/0x230 [ 1146.652644] path_openat+0x8bd/0x3f70 [ 1146.656445] ? trace_hardirqs_on+0x10/0x10 [ 1146.660913] ? path_lookupat.isra.0+0x7b0/0x7b0 [ 1146.665569] ? find_held_lock+0x35/0x130 [ 1146.669615] ? __alloc_fd+0x1d4/0x4a0 [ 1146.673470] do_filp_open+0x18e/0x250 [ 1146.677333] ? may_open_dev+0xe0/0xe0 [ 1146.681223] ? _raw_spin_unlock+0x2d/0x50 [ 1146.685366] ? __alloc_fd+0x1d4/0x4a0 [ 1146.689215] do_sys_open+0x2c5/0x430 [ 1146.693009] ? filp_open+0x70/0x70 [ 1146.696554] SyS_open+0x2d/0x40 [ 1146.699812] ? do_sys_open+0x430/0x430 [ 1146.703743] do_syscall_64+0x1eb/0x630 [ 1146.707612] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1146.712525] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1146.717806] RIP: 0033:0x7f2631e29120 [ 1146.721572] RSP: 002b:00007ffe84f73a48 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 1146.729286] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2631e29120 [ 1146.736683] RDX: 00007ffe84f74f34 RSI: 0000000000000000 RDI: 00007ffe84f74f34 [ 1146.743990] RBP: 0000000000000000 R08: 0000000000000078 R09: 0000000000000000 [ 1146.751302] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000766030 [ 1146.758587] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005 [ 1146.765966] INFO: task blkid:7477 blocked for more than 140 seconds. [ 1146.772499] Not tainted 4.14.111 #1 [ 1146.776626] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1146.784661] blkid D29040 7477 7371 0x00000004 [ 1146.790352] Call Trace: [ 1146.792983] __schedule+0x7be/0x1cf0 [ 1146.796683] ? __mutex_lock+0x737/0x1470 [ 1146.800818] ? pci_mmcfg_check_reserved+0x150/0x150 [ 1146.805940] schedule+0x92/0x1c0 [ 1146.809303] schedule_preempt_disabled+0x13/0x20 [ 1146.814126] __mutex_lock+0x73c/0x1470 [ 1146.818000] ? __mutex_unlock_slowpath+0x71/0x800 [ 1146.822892] ? __blkdev_get+0x145/0x1120 [ 1146.826943] ? mutex_trylock+0x1c0/0x1c0 [ 1146.831108] ? exact_match+0xd/0x20 [ 1146.834732] ? kobj_lookup+0x319/0x410 [ 1146.838605] ? blkdev_ioctl+0x1880/0x1880 [ 1146.842819] mutex_lock_nested+0x16/0x20 [ 1146.846864] ? mutex_lock_nested+0x16/0x20 [ 1146.851131] __blkdev_get+0x145/0x1120 [ 1146.855160] ? __blkdev_put+0x7f0/0x7f0 [ 1146.859128] ? bd_acquire+0x178/0x2c0 [ 1146.863009] ? find_held_lock+0x35/0x130 [ 1146.867096] blkdev_get+0xa8/0x8e0 [ 1146.870686] ? bd_may_claim+0xd0/0xd0 [ 1146.874478] ? _raw_spin_unlock+0x2d/0x50 [ 1146.878712] blkdev_open+0x1d1/0x260 [ 1146.882562] ? security_file_open+0x8f/0x1a0 [ 1146.886967] do_dentry_open+0x73e/0xeb0 [ 1146.890987] ? bd_acquire+0x2c0/0x2c0 [ 1146.894780] vfs_open+0x105/0x230 [ 1146.898211] path_openat+0x8bd/0x3f70 [ 1146.902060] ? trace_hardirqs_on+0x10/0x10 [ 1146.906339] ? path_lookupat.isra.0+0x7b0/0x7b0 [ 1146.911136] ? find_held_lock+0x35/0x130 [ 1146.915205] ? __alloc_fd+0x1d4/0x4a0 [ 1146.918995] do_filp_open+0x18e/0x250 [ 1146.922851] ? may_open_dev+0xe0/0xe0 [ 1146.926647] ? _raw_spin_unlock+0x2d/0x50 [ 1146.930975] ? __alloc_fd+0x1d4/0x4a0 [ 1146.934789] do_sys_open+0x2c5/0x430 [ 1146.938501] ? filp_open+0x70/0x70 [ 1146.942193] SyS_open+0x2d/0x40 [ 1146.945462] ? do_sys_open+0x430/0x430 [ 1146.949340] do_syscall_64+0x1eb/0x630 [ 1146.953294] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1146.958137] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1146.963385] RIP: 0033:0x7f6628b48120 [ 1146.967081] RSP: 002b:00007ffcb51437f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 1146.974878] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6628b48120 [ 1146.982166] RDX: 00007ffcb5145f41 RSI: 0000000000000000 RDI: 00007ffcb5145f41 [ 1146.989426] RBP: 0000000000000000 R08: 0000000000000078 R09: 0000000000000000 [ 1146.996754] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000001fd8030 [ 1147.004029] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005 [ 1147.011519] [ 1147.011519] Showing all locks held in the system: [ 1147.017875] 1 lock held by khungtaskd/1008: [ 1147.022335] #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7f/0x21f [ 1147.031477] 1 lock held by rsyslogd/7240: [ 1147.035606] #0: (&f->f_pos_lock){+.+.}, at: [] __fdget_pos+0xab/0xd0 [ 1147.043980] 2 locks held by getty/7361: [ 1147.047993] #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 [ 1147.056772] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 [ 1147.066211] 2 locks held by getty/7362: [ 1147.070209] #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 [ 1147.078886] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 [ 1147.088346] 2 locks held by getty/7363: [ 1147.092342] #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 [ 1147.101291] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 [ 1147.110664] 2 locks held by getty/7364: [ 1147.114624] #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 [ 1147.123422] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 [ 1147.132839] 2 locks held by getty/7365: [ 1147.136800] #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 [ 1147.145541] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 [ 1147.154983] 2 locks held by getty/7366: [ 1147.158940] #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 [ 1147.167670] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 [ 1147.177100] 2 locks held by getty/7367: [ 1147.181100] #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x33/0x40 [ 1147.189775] #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x17b0 [ 1147.199149] 2 locks held by syz-executor.4/7410: [ 1147.204053] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x145/0x1120 [ 1147.212767] #1: (loop_index_mutex){+.+.}, at: [] lo_open+0x1d/0xb0 [ 1147.220878] 1 lock held by syz-executor.0/7412: [ 1147.225560] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x145/0x1120 [ 1147.234301] 2 locks held by syz-executor.1/7414: [ 1147.239035] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x145/0x1120 [ 1147.247747] #1: (loop_index_mutex){+.+.}, at: [] lo_open+0x1d/0xb0 [ 1147.255865] 2 locks held by syz-executor.5/7415: [ 1147.260703] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x145/0x1120 [ 1147.269386] #1: (loop_index_mutex){+.+.}, at: [] lo_open+0x1d/0xb0 [ 1147.277640] 3 locks held by blkid/7470: [ 1147.281626] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_put+0xa6/0x7f0 [ 1147.290178] #1: (loop_index_mutex){+.+.}, at: [] lo_release+0x1e/0x1b0 [ 1147.298586] #2: (loop_ctl_mutex#2){+.+.}, at: [] lo_release+0x84/0x1b0 [ 1147.307048] 2 locks held by syz-executor.3/7473: [ 1147.311802] #0: (loop_ctl_mutex/1){+.+.}, at: [] lo_ioctl+0x87/0x1c70 [ 1147.320303] #1: (&bdev->bd_mutex){+.+.}, at: [] blkdev_reread_part+0x1f/0x40 [ 1147.329252] 2 locks held by syz-executor.2/7474: [ 1147.334123] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x145/0x1120 [ 1147.342853] #1: (loop_index_mutex){+.+.}, at: [] lo_open+0x1d/0xb0 [ 1147.350995] 2 locks held by blkid/7475: [ 1147.354956] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x145/0x1120 [ 1147.363871] #1: (loop_index_mutex){+.+.}, at: [] lo_open+0x1d/0xb0 [ 1147.372297] 1 lock held by blkid/7477: [ 1147.378723] #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x145/0x1120 [ 1147.397274] [ 1147.399014] ============================================= [ 1147.399014] [ 1147.406634] NMI backtrace for cpu 1 [ 1147.410547] CPU: 1 PID: 1008 Comm: khungtaskd Not tainted 4.14.111 #1 [ 1147.417547] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1147.427616] Call Trace: [ 1147.430245] dump_stack+0x138/0x19c [ 1147.433916] nmi_cpu_backtrace.cold+0x57/0x94 [ 1147.438496] ? irq_force_complete_move.cold+0x7d/0x7d [ 1147.443854] nmi_trigger_cpumask_backtrace+0x141/0x189 [ 1147.449170] arch_trigger_cpumask_backtrace+0x14/0x20 [ 1147.454617] watchdog+0x5d8/0xb80 [ 1147.458382] kthread+0x31c/0x430 [ 1147.461849] ? reset_hung_task_detector+0x20/0x20 [ 1147.466967] ? kthread_create_on_node+0xd0/0xd0 [ 1147.471679] ret_from_fork+0x3a/0x50 [ 1147.475582] Sending NMI from CPU 1 to CPUs 0: [ 1147.480480] NMI backtrace for cpu 0 skipped: idling at pc 0xffffffff861a94c2 [ 1147.481357] Kernel panic - not syncing: hung_task: blocked tasks [ 1147.493927] CPU: 1 PID: 1008 Comm: khungtaskd Not tainted 4.14.111 #1 [ 1147.500491] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1147.509835] Call Trace: [ 1147.512410] dump_stack+0x138/0x19c [ 1147.516017] panic+0x1f2/0x438 [ 1147.519197] ? add_taint.cold+0x16/0x16 [ 1147.523238] ? ___preempt_schedule+0x16/0x18 [ 1147.527629] watchdog+0x5e9/0xb80 [ 1147.531068] kthread+0x31c/0x430 [ 1147.534467] ? reset_hung_task_detector+0x20/0x20 [ 1147.539292] ? kthread_create_on_node+0xd0/0xd0 [ 1147.543945] ret_from_fork+0x3a/0x50 [ 1147.548910] Kernel Offset: disabled [ 1147.552597] Rebooting in 86400 seconds..