Warning: Permanently added '10.128.0.181' (ECDSA) to the list of known hosts. 2019/12/04 01:38:18 fuzzer started 2019/12/04 01:38:19 dialing manager at 10.128.0.26:42111 2019/12/04 01:38:19 syscalls: 2689 2019/12/04 01:38:19 code coverage: enabled 2019/12/04 01:38:19 comparison tracing: enabled 2019/12/04 01:38:19 extra coverage: extra coverage is not supported by the kernel 2019/12/04 01:38:19 setuid sandbox: enabled 2019/12/04 01:38:19 namespace sandbox: enabled 2019/12/04 01:38:19 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/04 01:38:19 fault injection: enabled 2019/12/04 01:38:19 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/04 01:38:19 net packet injection: enabled 2019/12/04 01:38:19 net device setup: enabled 2019/12/04 01:38:19 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/04 01:38:19 devlink PCI setup: PCI device 0000:00:10.0 is not available 01:38:20 executing program 0: r0 = fcntl$dupfd(0xffffffffffffffff, 0x0, 0xffffffffffffffff) ioctl$PERF_EVENT_IOC_ENABLE(0xffffffffffffffff, 0x8912, 0x400200) ioctl$KVM_SET_GUEST_DEBUG(r0, 0x4048ae9b, &(0x7f00000000c0)={0x0, 0x0, [0x0, 0x3ff, 0x1800000, 0x8001, 0x9, 0x3, 0x5]}) clock_gettime(0x0, 0x0) r1 = perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x81, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) fsetxattr$trusted_overlay_redirect(r1, 0x0, &(0x7f0000000080)='./file0\x00', 0x8, 0x0) pipe2$9p(0x0, 0x0) clock_gettime(0x0, &(0x7f00000001c0)={0x0, 0x0}) pselect6(0x40, &(0x7f0000000040)={0x3, 0x3, 0x100000000, 0x7, 0x0, 0xfffffffffffffffe, 0x164a, 0xffffffffffff57cb}, &(0x7f0000000140)={0x3, 0x0, 0x40, 0x2, 0xfffffffffffff259, 0x7, 0x57, 0x4}, &(0x7f0000000180)={0x3ff, 0x1ff, 0x3e, 0x3, 0x6, 0x7, 0x0, 0x3ff}, &(0x7f0000000200)={r2, r3+30000000}, &(0x7f00000002c0)={&(0x7f0000000240)={0x74ae}, 0x8}) unshare(0x600) prctl$PR_GET_PDEATHSIG(0x2, 0x0) r4 = socket$inet_tcp(0x2, 0x1, 0x0) ioctl$sock_inet_SIOCSIFADDR(r4, 0x8916, &(0x7f0000000000)={'bond_slave_0\x00', {0x2, 0x0, @loopback}}) 01:38:20 executing program 1: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000040)='/dev/net/tun\x00', 0x2, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000000)={'nr0\x01\x00\x00\x00\x00\x00\x00\x00\t\x00', 0x1}) r1 = socket$kcm(0x29, 0x80000000000005, 0x0) ioctl$PERF_EVENT_IOC_SET_FILTER(r1, 0x8914, &(0x7f0000000500)='nr0\x01\x00`\xa1\x9e\xf9\xd2\xc6s\xd9\xa1W\x1c\xb9\xe16\x9b\xcda\xef~Iy:\xe1\x87\x12\xec\xeb\x1d\xaav\x94\x97\x80\v\x7f\xbb\xd3[\x17\f\x10u\x1d9\xae\xb6`\xd8c\xe4\x9b\x8cO;=\xadH\x90+[-l\xfd\n\xbd7,c\xbc\xf5\xd7\r\xf3\xfdM.\x8dD<\x88\xbc\x0eV7\xdd\x82\xfc45\xbe\xd4\xde]i<\x9ax\x1c\x86>\x05\xd8\xa6\xf8h\x9a[\xe2\x92\x16\x06\x1f?\xf5?\x8bk9fx\xe7\xba\x15^\xf9\x15-~C\xb1\xec\xcb#1\xeb\x8e\xb1\xedU\x86\xdc\xf8\xb3\xb0\xb9\x996\x1aD\xff,\"\xc2\xab\xbe\xf4-\xd2N\xab\xe6r3F\xa6\xe4l\x04\x99\xa2\x14B\xd8\xd0\r\xcbW\xf0\x13\xffu\x95\xed\xd0\xff\ai0\xde6u\xd3A\x17\xa4N\xb0\xe4\xf82\x93m\xa4NW\xe4:>6\xbdH\xd2\xa8[\xf4\xfdJ\x80N\x83\xf2\xf3\xcf7\x8aCZ\xf5\xe2\x87\xd4\xe2s7\xb4\xad\xa1\x1b&!\x982\xeck+8Dk;\x95\xfe7q\xe9\xf4,\xa3\x0f\xb2\x1e\x12\xf0\xa3\xd8\xbc-\x85EJ\xf9\xfc\xc0#-\x8f\xd9\tD\x8b\x01\xf4lY=1\xea\x1c\x92de\xe3ZA\x99\a\x9c<\xa4\x11(\xb1|\xb0\x1f\xbf[R+\xe0\xfd\x02\x02*\xda7\xfe\xcc\x14\xb6\xc8\xc8\x83\x18\x83\xb8Z\x11\x06\xf2\xf8g\x02\rR\x9f\x17\xa3P\xf2\r\xd3\xbfQ\xa9\x8c\xfd\xa7\f.68\xa4\x83\xfd?\x87\x94\v\xb4x\xb0|L\x11\x03\x94\xc0\t=\x17\x95P\x89\xf2\xca\x97\xbb\xe0u\x12L\x9b\x85\x96\xe0\b\xbf\n\x02\x8bS\x9c\xecyl\xec\x9b\xf5\x85\xeb\x80\xfe>\r&') write$cgroup_subtree(r0, &(0x7f00000002c0)=ANY=[@ANYBLOB="000386dd607532a4003406e0bce59d987fe97e7f9a63935160cbb74d740710ff000000000000000000e3d8422a8eb0a63a8b4aaa7974b01f34a6e1bd0dd4a50778e3d70fb4c3092be92b08d811e342e67926c8ad09080000faaf15c1126ceb3e"], 0x60) syzkaller login: [ 62.601147][ T8482] IPVS: ftp: loaded support on port[0] = 21 [ 62.755317][ T8482] chnl_net:caif_netlink_parms(): no params data found 01:38:21 executing program 2: r0 = socket$unix(0x1, 0x1, 0x0) r1 = socket(0x200000000000011, 0x2, 0x0) r2 = fcntl$dupfd(r0, 0x0, r1) ioctl$PERF_EVENT_IOC_ENABLE(r2, 0x8912, 0x400200) r3 = open(&(0x7f0000000140)='./file0\x00', 0x40, 0x0) sync_file_range(r3, 0x0, 0x0, 0x4) [ 62.800342][ T8482] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.810258][ T8482] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.820653][ T8482] device bridge_slave_0 entered promiscuous mode [ 62.832189][ T8482] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.839900][ T8482] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.849441][ T8482] device bridge_slave_1 entered promiscuous mode [ 62.870731][ T8485] IPVS: ftp: loaded support on port[0] = 21 [ 62.902055][ T8482] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.915860][ T8482] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.962883][ T8482] team0: Port device team_slave_0 added [ 62.973665][ T8482] team0: Port device team_slave_1 added [ 63.040300][ T8482] device hsr_slave_0 entered promiscuous mode [ 63.078517][ T8482] device hsr_slave_1 entered promiscuous mode 01:38:21 executing program 3: socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000380)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) unshare(0x8000400) r1 = openat$smack_task_current(0xffffffffffffff9c, &(0x7f0000000100)='/proc/self/attr/current\x00', 0x2, 0x0) lseek(r1, 0x0, 0x4) [ 63.164223][ T8487] IPVS: ftp: loaded support on port[0] = 21 [ 63.290994][ T8482] netdevsim netdevsim0 netdevsim0: renamed from eth0 01:38:21 executing program 4: perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) sendto$inet(0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0) r0 = socket$unix(0x1, 0x2, 0x0) bind$unix(r0, &(0x7f0000000100)=@file={0x1, '\xe9\x1fq\x89Y\x1e\x923aK\x00'}, 0x6e) connect$unix(r0, &(0x7f0000000080)=@file={0x1, '\xe9\x1fq\x89Y\x1e\x923aK\x00'}, 0x6e) setsockopt$SO_TIMESTAMP(r0, 0x1, 0x23, &(0x7f0000000000)=0x79, 0x4) writev(r0, &(0x7f0000001380)=[{&(0x7f0000001100)="d2", 0x1}], 0x1) recvmmsg(r0, &(0x7f0000000300), 0x40000000000049e, 0x1000000000fe, 0x0) [ 63.388123][ T8485] chnl_net:caif_netlink_parms(): no params data found [ 63.409288][ T8482] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 63.460096][ T8482] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 63.534616][ T8490] IPVS: ftp: loaded support on port[0] = 21 [ 63.553897][ T8482] netdevsim netdevsim0 netdevsim3: renamed from eth3 01:38:22 executing program 5: r0 = socket$netlink(0x10, 0x3, 0x0) getsockopt$netlink(r0, 0x10e, 0x0, 0x0, 0xfffffffffffffffe) [ 63.685066][ T8485] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.702284][ T8492] IPVS: ftp: loaded support on port[0] = 21 [ 63.715077][ T8485] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.723657][ T8485] device bridge_slave_0 entered promiscuous mode [ 63.760224][ T8485] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.768377][ T8485] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.776964][ T8485] device bridge_slave_1 entered promiscuous mode [ 63.785216][ T8482] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.792811][ T8482] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.801711][ T8482] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.809198][ T8482] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.858643][ T2787] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.869291][ T2787] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.905851][ T8485] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.934718][ T8487] chnl_net:caif_netlink_parms(): no params data found [ 63.972025][ T8485] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.975684][ T8494] IPVS: ftp: loaded support on port[0] = 21 [ 64.046448][ T8487] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.054562][ T8487] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.063847][ T8487] device bridge_slave_0 entered promiscuous mode [ 64.071786][ T8490] chnl_net:caif_netlink_parms(): no params data found [ 64.084005][ T8485] team0: Port device team_slave_0 added [ 64.093283][ T8485] team0: Port device team_slave_1 added [ 64.109009][ T8487] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.116132][ T8487] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.124170][ T8487] device bridge_slave_1 entered promiscuous mode [ 64.200502][ T8485] device hsr_slave_0 entered promiscuous mode [ 64.237892][ T8485] device hsr_slave_1 entered promiscuous mode [ 64.277630][ T8485] debugfs: Directory 'hsr0' with parent '/' already present! [ 64.349981][ T8490] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.357415][ T8490] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.365627][ T8490] device bridge_slave_0 entered promiscuous mode [ 64.376741][ T8490] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.385734][ T8490] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.394168][ T8490] device bridge_slave_1 entered promiscuous mode [ 64.403781][ T8487] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 64.433879][ T8492] chnl_net:caif_netlink_parms(): no params data found [ 64.447611][ T8487] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 64.480286][ T8490] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 64.494321][ T8490] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 64.513911][ T8485] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 64.582143][ T8487] team0: Port device team_slave_0 added [ 64.594907][ T8487] team0: Port device team_slave_1 added [ 64.601155][ T8485] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 64.663710][ T8485] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 64.734963][ T8490] team0: Port device team_slave_0 added [ 64.743457][ T8490] team0: Port device team_slave_1 added [ 64.755751][ T8485] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 64.812865][ T8482] 8021q: adding VLAN 0 to HW filter on device bond0 [ 64.859979][ T8487] device hsr_slave_0 entered promiscuous mode [ 64.897836][ T8487] device hsr_slave_1 entered promiscuous mode [ 64.947643][ T8487] debugfs: Directory 'hsr0' with parent '/' already present! [ 64.960277][ T8492] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.967852][ T8492] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.976221][ T8492] device bridge_slave_0 entered promiscuous mode [ 64.985047][ T8492] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.994197][ T8492] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.003776][ T8492] device bridge_slave_1 entered promiscuous mode [ 65.080859][ T8490] device hsr_slave_0 entered promiscuous mode [ 65.127979][ T8490] device hsr_slave_1 entered promiscuous mode [ 65.167507][ T8490] debugfs: Directory 'hsr0' with parent '/' already present! [ 65.186626][ T8482] 8021q: adding VLAN 0 to HW filter on device team0 [ 65.203674][ T8492] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 65.222583][ T2787] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 65.235314][ T2787] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 65.270646][ T8492] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 65.300597][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 65.310750][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.320671][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.328894][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.363374][ T8492] team0: Port device team_slave_0 added [ 65.372563][ T8492] team0: Port device team_slave_1 added [ 65.394122][ T8500] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 65.406575][ T8500] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 65.418135][ T8500] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.426397][ T8500] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.434858][ T8500] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 65.448209][ T8487] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 65.500616][ T8487] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 65.560856][ T8487] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 65.619976][ T8487] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 65.694351][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 65.705842][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 65.716086][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 65.738715][ T8482] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 65.751232][ T8482] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 65.769129][ T8490] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 65.838777][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 65.846589][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 65.855649][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 65.864766][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 65.873851][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 65.884813][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 65.893786][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 65.902395][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 65.926494][ T8494] chnl_net:caif_netlink_parms(): no params data found [ 65.936496][ T8490] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 66.014290][ T8490] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 66.079238][ T8485] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.120266][ T8492] device hsr_slave_0 entered promiscuous mode [ 66.168021][ T8492] device hsr_slave_1 entered promiscuous mode [ 66.207788][ T8492] debugfs: Directory 'hsr0' with parent '/' already present! [ 66.240294][ T8490] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 66.326024][ T8482] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 66.364528][ T2787] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 66.373890][ T2787] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 66.382114][ T2787] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 66.391097][ T2787] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.400815][ T8485] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.412235][ T8492] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 66.466760][ T8492] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 66.541938][ T8492] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 66.602992][ T8492] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 66.662366][ T8500] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 66.672593][ T8500] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 66.687539][ T8500] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.695276][ T8500] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.711687][ T8494] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.719145][ T8494] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.729438][ T8494] device bridge_slave_0 entered promiscuous mode [ 66.738087][ T8494] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.745706][ T8494] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.754503][ T8494] device bridge_slave_1 entered promiscuous mode [ 66.785632][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 66.794225][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 66.803793][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 66.812306][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.819564][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.828388][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 66.841949][ T8494] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.865473][ T2722] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 66.950963][ T8490] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.969241][ T8490] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.013421][ T8490] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 67.024121][ T8490] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 67.058769][ T8490] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 171.897319][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 171.905172][ C1] rcu: 1-...!: (1 GPs behind) idle=5ce/1/0x4000000000000002 softirq=11555/11556 fqs=41 [ 171.916101][ C1] (t=10500 jiffies g=7269 q=633) [ 171.922097][ C1] rcu: rcu_preempt kthread starved for 10418 jiffies! g7269 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 171.933398][ C1] rcu: RCU grace-period kthread stack dump: [ 171.939451][ C1] rcu_preempt R running task 29104 10 2 0x80004000 [ 171.947522][ C1] Call Trace: [ 171.950858][ C1] __schedule+0x9a0/0xcc0 [ 171.955227][ C1] schedule+0x181/0x210 [ 171.959372][ C1] schedule_timeout+0x14f/0x240 [ 171.964411][ C1] ? run_local_timers+0x120/0x120 [ 171.969482][ C1] rcu_gp_kthread+0xed8/0x1770 [ 171.974648][ C1] kthread+0x332/0x350 [ 171.978827][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 171.984023][ C1] ? kthread_blkcg+0xe0/0xe0 [ 171.988884][ C1] ret_from_fork+0x24/0x30 [ 171.993326][ C1] NMI backtrace for cpu 1 [ 171.997742][ C1] CPU: 1 PID: 7 Comm: kworker/u4:0 Not tainted 5.4.0-syzkaller #0 [ 172.005532][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 172.023339][ C1] Workqueue: 0x0 (bat_events) [ 172.028197][ C1] Call Trace: [ 172.032949][ C1] [ 172.035906][ C1] dump_stack+0x1fb/0x318 [ 172.040522][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 172.045479][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 172.051829][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 172.058116][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 172.064391][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 172.070384][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 172.075749][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 172.081415][ C1] ? trace_hardirqs_off+0x74/0x80 [ 172.086816][ C1] update_process_times+0x12d/0x180 [ 172.093948][ C1] tick_sched_timer+0x263/0x420 [ 172.098821][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 172.104392][ C1] __hrtimer_run_queues+0x403/0x840 [ 172.109804][ C1] hrtimer_interrupt+0x38c/0xda0 [ 172.114777][ C1] ? debug_smp_processor_id+0x9/0x20 [ 172.120107][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 172.125990][ C1] apic_timer_interrupt+0xf/0x20 [ 172.131196][ C1] [ 172.134403][ C1] RIP: 0010:free_thread_stack+0x14c/0x590 [ 172.140407][ C1] Code: 2e 00 48 89 df 31 f6 e8 42 af 6e 00 43 80 3c 2e 00 74 08 4c 89 e7 e8 43 a4 69 00 49 8b 1c 24 48 83 c3 08 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 25 a4 69 00 48 8b 3b be fc ff ff [ 172.161386][ C1] RSP: 0018:ffffc90000cdfc30 EFLAGS: 00000a06 ORIG_RAX: ffffffffffffff13 [ 172.169977][ C1] RAX: 1ffff11014c742b1 RBX: ffff8880a63a1588 RCX: 0000000000000000 [ 172.178063][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea00028ac580 [ 172.186371][ C1] RBP: ffffc90000cdfc68 R08: 000000000003a768 R09: ffffed1011e212ff [ 172.194461][ C1] R10: ffffed1011e212ff R11: 0000000000000000 R12: ffff8880a63a1620 [ 172.203458][ C1] R13: dffffc0000000000 R14: 1ffff11014c742c4 R15: ffff88808f1097e8 [ 172.212430][ C1] put_task_stack+0xa3/0x130 [ 172.217073][ C1] finish_task_switch+0x3f1/0x550 [ 172.222284][ C1] __schedule+0x9a8/0xcc0 [ 172.228022][ C1] schedule+0x181/0x210 [ 172.232185][ C1] worker_thread+0x10d6/0x1630 [ 172.236978][ C1] kthread+0x332/0x350 [ 172.241436][ C1] ? rcu_lock_release+0x30/0x30 [ 172.246397][ C1] ? kthread_blkcg+0xe0/0xe0 [ 172.251021][ C1] ret_from_fork+0x24/0x30