[ 44.276825][ T25] audit: type=1800 audit(1575368425.767:26): pid=7951 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 44.306395][ T25] audit: type=1800 audit(1575368425.767:27): pid=7951 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 44.331125][ T25] audit: type=1800 audit(1575368425.777:28): pid=7951 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 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. [ 45.026084][ T25] audit: type=1800 audit(1575368426.537:29): pid=7951 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.170' (ECDSA) to the list of known hosts. 2019/12/03 10:20:33 fuzzer started 2019/12/03 10:20:35 dialing manager at 10.128.0.26:38907 2019/12/03 10:20:35 syscalls: 2697 2019/12/03 10:20:35 code coverage: enabled 2019/12/03 10:20:35 comparison tracing: enabled 2019/12/03 10:20:35 extra coverage: extra coverage is not supported by the kernel 2019/12/03 10:20:35 setuid sandbox: enabled 2019/12/03 10:20:35 namespace sandbox: enabled 2019/12/03 10:20:35 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 10:20:35 fault injection: enabled 2019/12/03 10:20:35 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 10:20:35 net packet injection: enabled 2019/12/03 10:20:35 net device setup: enabled 2019/12/03 10:20:35 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 10:20:35 devlink PCI setup: PCI device 0000:00:10.0 is not available 10:20:36 executing program 0: syz_mount_image$vfat(&(0x7f0000000340)='vfat\x00', &(0x7f00000003c0)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f0000000440)={[{@rodir='rodir'}], [{@smackfsfloor={'smackfsfloor', 0x3d, 'filter\x00'}}]}) 10:20:36 executing program 1: r0 = open(&(0x7f0000000300)='.\x00', 0x0, 0x0) symlinkat(&(0x7f0000000040)='\x13\x13w\xc5\xfc5\xd4\x14T\xd5\xd4\x1d)\xad\x1a`)Y\x81F\xe6\xbe\x16nA\xad\r\xbd@T\x03<\x9f3\xbb\xda\x82$\xa2\xf3\xd7r\xe7cnH\xb3<\xbfp\x83r\xe8\xf1\xb9\x93>\xc5\x12wC\xbe\"\x06 \x9e\xf0-\xf9\xcb\xf2\xf6\xe8\x80\xd38/\x00', r0, &(0x7f00000000c0)='./file0\x00') syzkaller login: [ 55.058960][ T8115] IPVS: ftp: loaded support on port[0] = 21 [ 55.067794][ T8117] IPVS: ftp: loaded support on port[0] = 21 10:20:36 executing program 2: r0 = socket$inet_icmp_raw(0x2, 0x3, 0x1) r1 = dup(r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) bpf$PROG_LOAD(0x5, &(0x7f00000006c0)={0xd, 0x4, &(0x7f0000346fc8)=@framed={{}, [@alu={0x8000000201a7f19, 0x0, 0x6, 0x5, 0x1, 0x84}]}, &(0x7f0000000040)='GPL\x00', 0x1, 0xfb, &(0x7f00001a7f05)=""/251, 0x0, 0x0, [], 0x0, 0x0, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0}, 0x70) [ 55.207454][ T8115] chnl_net:caif_netlink_parms(): no params data found [ 55.245861][ T8117] chnl_net:caif_netlink_parms(): no params data found [ 55.280844][ T8115] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.291019][ T8115] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.299223][ T8115] device bridge_slave_0 entered promiscuous mode [ 55.330258][ T8115] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.349098][ T8115] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.368406][ T8115] device bridge_slave_1 entered promiscuous mode [ 55.381925][ T8117] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.391890][ T8117] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.400077][ T8117] device bridge_slave_0 entered promiscuous mode [ 55.421552][ T8117] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.431430][ T8117] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.439595][ T8117] device bridge_slave_1 entered promiscuous mode [ 55.449930][ T8115] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 55.473949][ T8115] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 55.501435][ T8117] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 55.514831][ T8115] team0: Port device team_slave_0 added [ 55.522653][ T8117] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link 10:20:37 executing program 3: socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000100)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = socket$nl_route(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000300)={'syz_tun\x00', 0x0}) r3 = socket$nl_route(0x10, 0x3, 0x0) r4 = socket(0x10, 0x803, 0x0) sendmsg$NBD_CMD_DISCONNECT(r4, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000180)={0x0}}, 0x0) getsockname$packet(r4, &(0x7f0000000100)={0x11, 0x0, 0x0, 0x1, 0x0, 0x6, @broadcast}, &(0x7f0000000200)=0x265) sendmsg$nl_route(r3, &(0x7f0000000180)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000000)=@newlink={0x34, 0x10, 0x401, 0x0, 0x0, {0x0, 0x0, 0x0, r5}, [@IFLA_LINKINFO={0x14, 0x12, @bridge={{0xc, 0x1, 'bridge\x00'}, {0x4}}}]}, 0x34}}, 0x0) sendmsg$nl_route(r1, &(0x7f0000000000)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000002700)=@newlink={0x28, 0x10, 0x401, 0x0, 0x0, {0x0, 0x0, 0x0, r2}, [@IFLA_MASTER={0x8, 0xa, r5}]}, 0x28}}, 0x0) sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x0) ioctl$ifreq_SIOCGIFINDEX_vcan(0xffffffffffffffff, 0x8933, 0x0) [ 55.534696][ T8121] IPVS: ftp: loaded support on port[0] = 21 [ 55.534794][ T8115] team0: Port device team_slave_1 added [ 55.610714][ T8115] device hsr_slave_0 entered promiscuous mode [ 55.666826][ T8115] device hsr_slave_1 entered promiscuous mode 10:20:37 executing program 4: r0 = socket$nl_route(0x10, 0x3, 0x0) sendmsg$nl_route(r0, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000280)=@getlink={0x28, 0x12, 0x1, 0x0, 0x0, {}, [@IFLA_NET_NS_PID={0x8}]}, 0x28}}, 0x0) [ 55.746608][ T8117] team0: Port device team_slave_0 added [ 55.753782][ T8117] team0: Port device team_slave_1 added [ 55.770240][ T8123] IPVS: ftp: loaded support on port[0] = 21 [ 55.849202][ T8115] netdevsim netdevsim0 netdevsim0: renamed from eth0 10:20:37 executing program 5: r0 = openat$vnet(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/vhost-net\x00', 0x2, 0x0) ioctl$int_in(r0, 0x40000000af01, 0x0) r1 = openat$tun(0xffffffffffffff9c, &(0x7f00000005c0)='/dev/net/tun\x00', 0x284000, 0x0) ioctl$VHOST_SET_MEM_TABLE(r0, 0x4008af03, &(0x7f0000000280)=ANY=[]) r2 = dup(r1) ioctl$VHOST_NET_SET_BACKEND(r0, 0x4008af30, &(0x7f0000000000)={0x0, r2}) [ 55.998800][ T8117] device hsr_slave_0 entered promiscuous mode [ 56.057387][ T8117] device hsr_slave_1 entered promiscuous mode [ 56.116400][ T8117] debugfs: Directory 'hsr0' with parent '/' already present! [ 56.127125][ T8115] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 56.196532][ T8125] IPVS: ftp: loaded support on port[0] = 21 [ 56.213503][ T8115] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 56.268528][ T8115] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 56.320790][ T8127] IPVS: ftp: loaded support on port[0] = 21 [ 56.351793][ T8117] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 56.421271][ T8117] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 56.534637][ T8117] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 56.588290][ T8117] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 56.622761][ T8123] chnl_net:caif_netlink_parms(): no params data found [ 56.655803][ T8123] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.664284][ T8123] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.672087][ T8123] device bridge_slave_0 entered promiscuous mode [ 56.681060][ T8123] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.688654][ T8123] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.696586][ T8123] device bridge_slave_1 entered promiscuous mode [ 56.729051][ T8121] chnl_net:caif_netlink_parms(): no params data found [ 56.765377][ T8123] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.794282][ T8123] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.817272][ T8121] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.824506][ T8121] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.832759][ T8121] device bridge_slave_0 entered promiscuous mode [ 56.840480][ T8121] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.847768][ T8121] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.855375][ T8121] device bridge_slave_1 entered promiscuous mode [ 56.881342][ T8121] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.922968][ T8125] chnl_net:caif_netlink_parms(): no params data found [ 56.934839][ T8123] team0: Port device team_slave_0 added [ 56.941977][ T8121] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.975039][ T8125] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.982602][ T8125] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.990745][ T8125] device bridge_slave_0 entered promiscuous mode [ 56.999052][ T8125] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.006099][ T8125] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.014009][ T8125] device bridge_slave_1 entered promiscuous mode [ 57.021937][ T8123] team0: Port device team_slave_1 added [ 57.089418][ T8123] device hsr_slave_0 entered promiscuous mode [ 57.126552][ T8123] device hsr_slave_1 entered promiscuous mode [ 57.166334][ T8123] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.184282][ T8125] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.203172][ T8121] team0: Port device team_slave_0 added [ 57.213454][ T8125] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.255457][ T8127] chnl_net:caif_netlink_parms(): no params data found [ 57.268922][ T8121] team0: Port device team_slave_1 added [ 57.303830][ T8117] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.314188][ T8115] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.339042][ T8127] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.346146][ T8127] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.353761][ T8127] device bridge_slave_0 entered promiscuous mode [ 57.361837][ T8127] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.371714][ T8127] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.379434][ T8127] device bridge_slave_1 entered promiscuous mode [ 57.404309][ T8125] team0: Port device team_slave_0 added [ 57.412428][ T8125] team0: Port device team_slave_1 added [ 57.428321][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 57.436062][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.446926][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 57.454557][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.510059][ T8121] device hsr_slave_0 entered promiscuous mode [ 57.566455][ T8121] device hsr_slave_1 entered promiscuous mode [ 57.616323][ T8121] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.631646][ T8127] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.642399][ T8117] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.651052][ T8115] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.658018][ T8123] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 57.706103][ T8123] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 57.758991][ T8127] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.779998][ T8127] team0: Port device team_slave_0 added [ 57.787074][ T8127] team0: Port device team_slave_1 added [ 57.817859][ T8125] device hsr_slave_0 entered promiscuous mode [ 57.876988][ T8125] device hsr_slave_1 entered promiscuous mode [ 57.926365][ T8125] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.934126][ T8123] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 58.028460][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 58.037030][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 58.045388][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.052547][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.060439][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 58.069208][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.077516][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.084533][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.092021][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 58.100795][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 58.109143][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.116233][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.123665][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 58.132827][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 58.141642][ T8123] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 58.229723][ T8121] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 58.271899][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 58.279787][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 58.287988][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 58.296533][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.304774][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.311835][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.320309][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 58.328908][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 58.388884][ T8127] device hsr_slave_0 entered promiscuous mode [ 58.426615][ T8127] device hsr_slave_1 entered promiscuous mode [ 58.466375][ T8127] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.488144][ T8121] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 58.549822][ T8121] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 58.608554][ T8121] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 58.649243][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 58.659409][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 58.672102][ T8125] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 58.732601][ T8125] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 58.785487][ T8117] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 58.796892][ T8117] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 58.811631][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 58.820285][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 58.828836][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 58.837480][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 58.845802][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 58.854370][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 58.863201][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 58.871715][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 58.879954][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 58.888204][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 58.896483][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 58.904904][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 58.913272][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 58.921368][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 58.929161][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 58.940602][ T8125] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 59.003644][ T8125] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 59.060504][ T8115] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 59.072128][ T8115] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 59.096752][ T8130] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 59.104956][ T8130] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 59.113527][ T8130] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 59.122026][ T8130] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 59.147443][ T8127] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 59.202311][ T8127] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 59.245863][ T8117] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 59.255020][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 59.262655][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 59.270568][ T8127] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 59.338095][ T8127] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 59.382139][ T8115] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 59.472983][ T8121] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.513523][ T8125] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.562913][ T8121] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.581290][ T8140] FAT-fs (loop0): bogus number of reserved sectors [ 59.598595][ T8140] FAT-fs (loop0): Can't find a valid FAT filesystem [ 59.625144][ T8121] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 59.635975][ T8121] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 59.664172][ T8121] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 164.676172][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 164.682973][ C1] rcu: 1-...!: (1 GPs behind) idle=b8a/1/0x4000000000000002 softirq=12441/12442 fqs=1 [ 164.692915][ C1] (t=10501 jiffies g=6393 q=388) [ 164.697942][ C1] rcu: rcu_preempt kthread starved for 10500 jiffies! g6393 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 164.709024][ C1] rcu: RCU grace-period kthread stack dump: [ 164.714904][ C1] rcu_preempt R running task 29104 10 2 0x80004000 [ 164.722797][ C1] Call Trace: [ 164.726087][ C1] __schedule+0x9a0/0xcc0 [ 164.730415][ C1] schedule+0x181/0x210 [ 164.734562][ C1] schedule_timeout+0x14f/0x240 [ 164.739401][ C1] ? run_local_timers+0x120/0x120 [ 164.744416][ C1] rcu_gp_kthread+0xed8/0x1770 [ 164.749175][ C1] kthread+0x332/0x350 [ 164.753227][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 164.758324][ C1] ? kthread_blkcg+0xe0/0xe0 [ 164.762918][ C1] ret_from_fork+0x24/0x30 [ 164.767333][ C1] NMI backtrace for cpu 1 [ 164.771656][ C1] CPU: 1 PID: 8135 Comm: blkid Not tainted 5.4.0-syzkaller #0 [ 164.779088][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 164.789129][ C1] Call Trace: [ 164.792398][ C1] [ 164.795253][ C1] dump_stack+0x1fb/0x318 [ 164.799571][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 164.804406][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 164.810567][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 164.816654][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 164.823417][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 164.829389][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 164.834496][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 164.839690][ C1] ? trace_hardirqs_off+0x74/0x80 [ 164.844707][ C1] update_process_times+0x12d/0x180 [ 164.849896][ C1] tick_sched_timer+0x263/0x420 [ 164.854735][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 164.860269][ C1] __hrtimer_run_queues+0x403/0x840 [ 164.865469][ C1] hrtimer_interrupt+0x38c/0xda0 [ 164.870426][ C1] ? debug_smp_processor_id+0x9/0x20 [ 164.875701][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 164.881233][ C1] apic_timer_interrupt+0xf/0x20 [ 164.886167][ C1] [ 164.889092][ C1] RIP: 0010:__sanitizer_cov_trace_pc+0x1c/0x50 [ 164.895230][ C1] Code: cc 07 48 89 de e8 64 02 3b 00 5b 5d c3 cc 48 8b 04 24 65 48 8b 0c 25 c0 1d 02 00 65 8b 15 b8 81 8b 7e f7 c2 00 01 1f 00 75 2c <8b> 91 80 13 00 00 83 fa 02 75 21 48 8b 91 88 13 00 00 48 8b 32 48 [ 164.914832][ C1] RSP: 0018:ffffc90002247720 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 164.923412][ C1] RAX: ffffffff81487326 RBX: ffffea00025b8a00 RCX: ffff88809b0c4340 [ 164.931371][ C1] RDX: 0000000000000001 RSI: 00000000fffffffc RDI: ffffea00025b8a00 [ 164.939332][ C1] RBP: ffffc90002247748 R08: dffffc0000000000 R09: fffffbfff120248a [ 164.947296][ C1] R10: fffffbfff120248a R11: 0000000000000000 R12: ffff88808b674aa0 [ 164.955254][ C1] R13: dffffc0000000000 R14: 00000000fffffffc R15: ffff888098e51868 [ 164.963232][ C1] ? mod_memcg_page_state+0x16/0x190 [ 164.968507][ C1] ? mod_memcg_page_state+0x16/0x190 [ 164.973779][ C1] free_thread_stack+0x168/0x590 [ 164.978704][ C1] put_task_stack+0xa3/0x130 [ 164.983279][ C1] finish_task_switch+0x3f1/0x550 [ 164.988296][ C1] __schedule+0x9a8/0xcc0 [ 164.992704][ C1] preempt_schedule_irq+0xc1/0x140 [ 164.997806][ C1] retint_kernel+0x1b/0x2b [ 165.002205][ C1] RIP: 0010:kmem_cache_free+0xc8/0xf0 [ 165.007558][ C1] Code: 58 07 00 74 42 4c 89 f7 57 9d 0f 1f 44 00 00 e8 0e 98 ca ff eb 19 e8 a7 95 ca ff 48 83 3d 07 f7 58 07 00 74 24 4c 89 f7 57 9d <0f> 1f 44 00 00 4c 89 e7 4c 89 fe e8 58 01 00 00 5b 41 5c 41 5e 41 [ 165.027159][ C1] RSP: 0018:ffffc900022479a0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 165.035560][ C1] RAX: ffff88809b0c4bd4 RBX: ffff8880aa812a80 RCX: ffff88809b0c4340 [ 165.043519][ C1] RDX: 0000000000000000 RSI: ffffffff81a3c074 RDI: 0000000000000286 [ 165.051480][ C1] RBP: ffffc900022479c0 R08: ffff88809b0c4b98 R09: ffffc900022477d4 [ 165.059438][ C1] R10: 0000000000000012 R11: 0000000000000000 R12: ffffffff81a3c074 [ 165.067831][ C1] R13: ffffea00022d8440 R14: 0000000000000286 R15: ffff8880a8ddf580 [ 165.075808][ C1] ? ptlock_free+0x44/0x50 [ 165.080216][ C1] ? ptlock_free+0x44/0x50 [ 165.084627][ C1] ptlock_free+0x44/0x50 [ 165.088864][ C1] ___pte_free_tlb+0x2c/0x190 [ 165.093530][ C1] free_pgd_range+0x7ff/0xea0 [ 165.098213][ C1] free_pgtables+0x2c8/0x300 [ 165.102799][ C1] exit_mmap+0x28a/0x530 [ 165.107032][ C1] ? exit_aio+0x25e/0x370 [ 165.111354][ C1] __mmput+0x120/0x3a0 [ 165.115410][ C1] mmput+0x5d/0x70 [ 165.119116][ C1] exit_mm+0x50a/0x590 [ 165.123180][ C1] do_exit+0x544/0x2020 [ 165.127326][ C1] ? check_preemption_disabled+0xb4/0x260 [ 165.133040][ C1] do_group_exit+0x15c/0x2b0 [ 165.137618][ C1] __do_sys_exit_group+0x17/0x20 [ 165.142539][ C1] __se_sys_exit_group+0x14/0x20 [ 165.147459][ C1] __x64_sys_exit_group+0x3b/0x40 [ 165.152465][ C1] do_syscall_64+0xf7/0x1c0 [ 165.156955][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 165.162832][ C1] RIP: 0033:0x7ff122b9e1e8 [ 165.167245][ C1] Code: Bad RIP value. [ 165.171293][ C1] RSP: 002b:00007ffe5f5ad3e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 165.179692][ C1] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff122b9e1e8 [ 165.187646][ C1] RDX: 0000000000000002 RSI: 000000000000003c RDI: 0000000000000002 [ 165.195687][ C1] RBP: 00007ff122e73840 R08: 00000000000000e7 R09: ffffffffffffffa8 [ 165.203642][ C1] R10: 00007ff122e79740 R11: 0000000000000246 R12: 00007ff122e73840 [ 165.211595][ C1] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000