[ 43.320163][ T23] audit: type=1800 audit(1575378362.343:25): pid=8018 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 43.339426][ T23] audit: type=1800 audit(1575378362.353:26): pid=8018 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 43.384531][ T23] audit: type=1800 audit(1575378362.353:27): pid=8018 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [ 43.966166][ T8087] sshd (8087) used greatest stack depth: 22976 bytes left [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.1.25' (ECDSA) to the list of known hosts. 2019/12/03 13:06:13 fuzzer started 2019/12/03 13:06:15 dialing manager at 10.128.0.26:45711 2019/12/03 13:06:15 syscalls: 2689 2019/12/03 13:06:15 code coverage: enabled 2019/12/03 13:06:15 comparison tracing: enabled 2019/12/03 13:06:15 extra coverage: extra coverage is not supported by the kernel 2019/12/03 13:06:15 setuid sandbox: enabled 2019/12/03 13:06:15 namespace sandbox: enabled 2019/12/03 13:06:15 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 13:06:15 fault injection: enabled 2019/12/03 13:06:15 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 13:06:15 net packet injection: enabled 2019/12/03 13:06:15 net device setup: enabled 2019/12/03 13:06:15 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 13:06:15 devlink PCI setup: PCI device 0000:00:10.0 is not available 13:06:16 executing program 0: r0 = socket$key(0xf, 0x3, 0x2) sendmsg$key(r0, &(0x7f0000000100)={0x0, 0x0, &(0x7f00008feff0)={&(0x7f0000000280)=ANY=[@ANYBLOB="020d0000100000000000000000000000030006000000000002000000e000000100000000001400000800120002000200000000000000000020006c0003030040030000000051b5e0329724d433020000000000000180000010000000000000000000000000800004030005000000000002000000e0000001000000000000000061f663d28cfbb8e9108f7cac1e1ce1"], 0x80}}, 0x0) 13:06:16 executing program 1: ioctl$UFFDIO_API(0xffffffffffffffff, 0xc018aa3f, &(0x7f0000000480)) mprotect(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x4) r0 = userfaultfd(0x0) ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f0000000480)) syzkaller login: [ 57.539326][ T8181] IPVS: ftp: loaded support on port[0] = 21 13:06:16 executing program 2: r0 = socket$inet_udplite(0x2, 0x2, 0x88) ioctl$sock_SIOCETHTOOL(r0, 0x8946, &(0x7f0000000000)={'bridge0\x00', &(0x7f0000000680)=@ethtool_link_settings={0x4c, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3}}) [ 57.695457][ T8181] chnl_net:caif_netlink_parms(): no params data found [ 57.706357][ T8183] IPVS: ftp: loaded support on port[0] = 21 [ 57.835504][ T8181] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.843246][ T8186] IPVS: ftp: loaded support on port[0] = 21 [ 57.850903][ T8181] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.862412][ T8181] device bridge_slave_0 entered promiscuous mode [ 57.895506][ T8181] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.902798][ T8181] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.911498][ T8181] device bridge_slave_1 entered promiscuous mode [ 57.955876][ T8181] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.982976][ T8181] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link 13:06:17 executing program 3: 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_config_ext}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) r0 = socket$netlink(0x10, 0x3, 0x8000000000000004) writev(r0, &(0x7f00007af000)=[{&(0x7f0000000080)="480000001400190a20ffff7fffffff5602113b850e1de0974881000000fe58a2bc4a03049164643e89720000de213ee23ffbf510040041feff5aff2b000000000000070000000000", 0x48}], 0x1) socket$inet_udp(0x2, 0x2, 0x0) socketpair$unix(0x1, 0x2, 0x0, 0x0) [ 58.010305][ T8183] chnl_net:caif_netlink_parms(): no params data found [ 58.096185][ T8181] team0: Port device team_slave_0 added [ 58.131584][ T8183] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.138757][ T8183] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.160810][ T8183] device bridge_slave_0 entered promiscuous mode [ 58.169091][ T8181] team0: Port device team_slave_1 added [ 58.180513][ T8183] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.187646][ T8183] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.208022][ T8183] device bridge_slave_1 entered promiscuous mode 13:06:17 executing program 4: r0 = dup3(0xffffffffffffffff, 0xffffffffffffffff, 0x0) ioctl$FS_IOC_GETFLAGS(r0, 0x80086601, &(0x7f0000000180)) r1 = socket(0x2000000000000021, 0x2, 0x10000000000002) connect$rxrpc(r1, &(0x7f0000000000)=@in6={0x21, 0x0, 0x2, 0xe, {0xa, 0x0, 0x0, @ipv4={[], [], @dev}}}, 0x24) r2 = socket(0x2000000000000021, 0x2, 0x10000000000002) connect$rxrpc(r2, &(0x7f0000000000)=@in6={0x21, 0x0, 0x2, 0xe, {0xa, 0x0, 0x0, @ipv4={[], [], @dev}}}, 0x24) ioctl$FIDEDUPERANGE(0xffffffffffffffff, 0xc0189436, 0x0) r3 = socket$inet_tcp(0x2, 0x1, 0x0) ioctl$int_in(r3, 0x5452, &(0x7f00000001c0)=0x1) fcntl$dupfd(0xffffffffffffffff, 0x0, 0xffffffffffffffff) bind$inet(r3, &(0x7f00000000c0)={0x2, 0x4e20, @remote}, 0x10) sendto$inet(r3, 0x0, 0x0, 0x1000000020000000, &(0x7f0000000080)={0x2, 0x4e20, @remote}, 0x10) sendto$inet(r3, &(0x7f0000000240), 0x1192aca8268c9077, 0x3, 0x0, 0xffffffffffffff06) perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x41c1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext, 0x29d912f5e24f2f79}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) recvfrom$inet(r3, &(0x7f0000000040)=""/6, 0xffffffffffffff1e, 0x300, 0x0, 0xfffffffffffffe3d) [ 58.299515][ T8183] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.323002][ T8189] IPVS: ftp: loaded support on port[0] = 21 [ 58.329854][ T8186] chnl_net:caif_netlink_parms(): no params data found [ 58.383444][ T8181] device hsr_slave_0 entered promiscuous mode [ 58.421193][ T8181] device hsr_slave_1 entered promiscuous mode [ 58.467125][ T8183] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.527019][ T8183] team0: Port device team_slave_0 added [ 58.563638][ T8183] team0: Port device team_slave_1 added 13:06:17 executing program 5: r0 = socket$nl_xfrm(0x10, 0x3, 0x6) sendmsg$nl_xfrm(r0, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000001700)=@allocspi={0xf8, 0x16, 0x1, 0x0, 0x0, {{{@in6=@dev, @in6=@local}, {@in6=@mcast2, 0x0, 0x33}, @in6=@loopback}}}, 0xf8}}, 0x0) [ 58.579265][ T8192] IPVS: ftp: loaded support on port[0] = 21 [ 58.611474][ T8181] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 58.654189][ T8186] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.670175][ T8186] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.678089][ T8186] device bridge_slave_0 entered promiscuous mode [ 58.742100][ T8183] device hsr_slave_0 entered promiscuous mode [ 58.790361][ T8183] device hsr_slave_1 entered promiscuous mode [ 58.830229][ T8183] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.838009][ T8181] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 58.903617][ T8181] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 58.967208][ T8186] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.974416][ T8186] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.982832][ T8186] device bridge_slave_1 entered promiscuous mode [ 59.005753][ T8196] IPVS: ftp: loaded support on port[0] = 21 [ 59.018386][ T8181] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 59.068190][ T8186] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.079827][ T8186] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.166714][ T8186] team0: Port device team_slave_0 added [ 59.175308][ T8186] team0: Port device team_slave_1 added [ 59.181817][ T8183] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 59.213285][ T8183] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 59.282747][ T8183] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 59.333629][ T8183] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 59.424168][ T8189] chnl_net:caif_netlink_parms(): no params data found [ 59.502891][ T8186] device hsr_slave_0 entered promiscuous mode [ 59.541169][ T8186] device hsr_slave_1 entered promiscuous mode [ 59.580198][ T8186] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.627022][ T8196] chnl_net:caif_netlink_parms(): no params data found [ 59.702377][ T8186] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 59.741981][ T8186] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 59.794420][ T8186] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 59.856795][ T8186] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 59.896249][ T8181] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.908367][ T8189] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.915680][ T8189] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.923665][ T8189] device bridge_slave_0 entered promiscuous mode [ 59.931249][ T8192] chnl_net:caif_netlink_parms(): no params data found [ 59.939680][ T8189] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.947371][ T8189] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.955644][ T8189] device bridge_slave_1 entered promiscuous mode [ 59.998398][ T8189] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.013964][ T8196] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.022901][ T8196] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.032086][ T8196] device bridge_slave_0 entered promiscuous mode [ 60.043075][ T8196] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.050584][ T8196] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.058755][ T8196] device bridge_slave_1 entered promiscuous mode [ 60.067152][ T8189] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.080802][ T8181] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.112678][ T8195] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.122175][ T8195] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.142910][ T8196] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.154689][ T8196] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.164959][ T8192] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.173304][ T8192] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.181086][ T8192] device bridge_slave_0 entered promiscuous mode [ 60.189661][ T8192] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.196832][ T8192] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.204625][ T8192] device bridge_slave_1 entered promiscuous mode [ 60.228849][ T8192] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.253371][ T8192] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.264933][ T8189] team0: Port device team_slave_0 added [ 60.274308][ T8201] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 60.283089][ T8201] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.291782][ T8201] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.298888][ T8201] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.307321][ T8195] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 60.317028][ T8196] team0: Port device team_slave_0 added [ 60.328723][ T8183] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.351654][ T8189] team0: Port device team_slave_1 added [ 60.360618][ T8196] team0: Port device team_slave_1 added [ 60.368093][ T8192] team0: Port device team_slave_0 added [ 60.391453][ T8192] team0: Port device team_slave_1 added [ 60.407681][ T8200] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 60.416663][ T8200] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.425968][ T8200] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.433065][ T8200] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.441434][ T8200] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 60.449835][ T8200] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 60.458402][ T8200] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 60.467107][ T8200] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 60.479702][ T8200] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 60.552908][ T8189] device hsr_slave_0 entered promiscuous mode [ 60.610377][ T8189] device hsr_slave_1 entered promiscuous mode [ 60.640556][ T8189] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.657710][ T8183] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.668130][ T8181] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 60.678841][ T8181] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 60.692760][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 60.701943][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 60.710905][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 60.719484][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 60.730156][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.737916][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.745950][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 60.754956][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 60.767274][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 60.803102][ T8196] device hsr_slave_0 entered promiscuous mode [ 60.830386][ T8196] device hsr_slave_1 entered promiscuous mode [ 60.870100][ T8196] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.886882][ T8200] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 60.895674][ T8200] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.904700][ T8200] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.911852][ T8200] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.920184][ T8200] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 60.982744][ T8192] device hsr_slave_0 entered promiscuous mode [ 61.030414][ T8192] device hsr_slave_1 entered promiscuous mode [ 61.100169][ T8192] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.144372][ T8195] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 61.153149][ T8195] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.161917][ T8195] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.168968][ T8195] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.181522][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 61.195593][ T8192] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 61.245588][ T8192] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 61.301944][ T8189] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 61.346757][ T8189] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 61.395028][ T8189] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 61.442121][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 61.449586][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 61.457307][ T8192] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 61.515797][ T8186] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.524506][ T8189] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 61.584515][ T8192] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 61.643735][ T8196] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 61.702540][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.729308][ T8181] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 61.741499][ T8196] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 61.781959][ T8195] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 61.791040][ T8195] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.799405][ T8195] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 61.808243][ T8195] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.817001][ T8195] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 61.826033][ T8195] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 61.834359][ T8195] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.843353][ T8195] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.851347][ T8195] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.861896][ T8183] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 61.873219][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 61.891133][ T8196] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 61.962638][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 61.975485][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 62.001134][ T8196] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 62.024020][ T8186] 8021q: adding VLAN 0 to HW filter on device team0 [ 62.064964][ T8183] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 62.077571][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 167.089944][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 167.096941][ C1] rcu: 1-...!: (10499 ticks this GP) idle=132/1/0x4000000000000002 softirq=11037/11037 fqs=146 [ 167.107577][ C1] (t=10500 jiffies g=6393 q=72) [ 167.112515][ C1] rcu: rcu_preempt kthread starved for 10204 jiffies! g6393 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 167.123622][ C1] rcu: RCU grace-period kthread stack dump: [ 167.129605][ C1] rcu_preempt R running task 29032 10 2 0x80004000 [ 167.137508][ C1] Call Trace: [ 167.140890][ C1] __schedule+0x9a0/0xcc0 [ 167.145229][ C1] schedule+0x181/0x210 [ 167.149380][ C1] schedule_timeout+0x14f/0x240 [ 167.154239][ C1] ? run_local_timers+0x120/0x120 [ 167.159297][ C1] rcu_gp_kthread+0xed8/0x1770 [ 167.164072][ C1] kthread+0x332/0x350 [ 167.168137][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 167.173242][ C1] ? kthread_blkcg+0xe0/0xe0 [ 167.177864][ C1] ret_from_fork+0x24/0x30 [ 167.182381][ C1] NMI backtrace for cpu 1 [ 167.186708][ C1] CPU: 1 PID: 48 Comm: kworker/1:1 Not tainted 5.4.0-syzkaller #0 [ 167.194500][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 167.204562][ C1] Workqueue: events linkwatch_event [ 167.209880][ C1] Call Trace: [ 167.213175][ C1] [ 167.216119][ C1] dump_stack+0x1fb/0x318 [ 167.220453][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 167.225607][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 167.231858][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 167.237925][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 167.243907][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 167.250539][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 167.258232][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 167.265447][ C1] ? trace_hardirqs_off+0x74/0x80 [ 167.271900][ C1] update_process_times+0x12d/0x180 [ 167.277448][ C1] tick_sched_timer+0x263/0x420 [ 167.282839][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 167.289464][ C1] __hrtimer_run_queues+0x403/0x840 [ 167.297099][ C1] hrtimer_interrupt+0x38c/0xda0 [ 167.302615][ C1] ? debug_smp_processor_id+0x9/0x20 [ 167.309002][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 167.315439][ C1] apic_timer_interrupt+0xf/0x20 [ 167.321764][ C1] [ 167.324876][ C1] RIP: 0010:free_thread_stack+0x186/0x590 [ 167.330821][ C1] Code: 8b 3b be fc ff ff ff e8 28 04 00 00 43 80 3c 2e 00 74 08 4c 89 e7 e8 09 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 eb a3 69 00 48 8b 1b e9 82 ff ff [ 167.353072][ C1] RSP: 0018:ffffc90000eb7700 EFLAGS: 00000a02 ORIG_RAX: ffffffffffffff13 [ 167.361752][ C1] RAX: 1ffff110144bcf01 RBX: ffff8880a25e7808 RCX: ffff8880a99d0580 [ 167.371305][ C1] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea00028e33c0 [ 167.379518][ C1] RBP: ffffc90000eb7738 R08: 000000000003a768 R09: ffffed1014e2e6af [ 167.387517][ C1] R10: ffffed1014e2e6af R11: 0000000000000000 R12: ffff8880a25e78a0 [ 167.395492][ C1] R13: dffffc0000000000 R14: 1ffff110144bcf14 R15: ffff8880a7173568 [ 167.403491][ C1] put_task_stack+0xa3/0x130 [ 167.408083][ C1] finish_task_switch+0x3f1/0x550 [ 167.413118][ C1] __schedule+0x9a8/0xcc0 [ 167.417453][ C1] ? ___preempt_schedule+0x16/0x18 [ 167.422596][ C1] preempt_schedule+0xdb/0x120 [ 167.427356][ C1] ___preempt_schedule+0x16/0x18 [ 167.432289][ C1] ? vprintk_emit+0x2fe/0x3a0 [ 167.436961][ C1] ? vprintk_emit+0x368/0x3a0 [ 167.441634][ C1] vprintk_emit+0x36d/0x3a0 [ 167.446140][ C1] vprintk_default+0x28/0x30 [ 167.450985][ C1] vprintk_func+0x158/0x170 [ 167.455572][ C1] printk+0x62/0x8d [ 167.459377][ C1] ? addrconf_notify+0xb6b/0x3c90 [ 167.464439][ C1] ? addrconf_notify+0x779/0x3c90 [ 167.469462][ C1] addrconf_notify+0x2c8d/0x3c90 [ 167.474582][ C1] ? lockdep_hardirqs_on+0x3c5/0x7d0 [ 167.479874][ C1] ? __local_bh_enable_ip+0x13a/0x240 [ 167.487780][ C1] ? clusterip_netdev_event+0x48b/0x4a0 [ 167.493330][ C1] ? trace_hardirqs_on+0x74/0x80 [ 167.498264][ C1] ? __local_bh_enable_ip+0x13a/0x240 [ 167.503630][ C1] ? clusterip_netdev_event+0x48b/0x4a0 [ 167.509172][ C1] ? tls_dev_event+0x619/0xc00 [ 167.513975][ C1] ? clusterip_netdev_event+0x48b/0x4a0 [ 167.519531][ C1] ? ip6mr_device_event+0x1ee/0x210 [ 167.524776][ C1] raw_notifier_call_chain+0xec/0x190 [ 167.530153][ C1] netdev_state_change+0x147/0x1f0 [ 167.535273][ C1] linkwatch_do_dev+0x10e/0x160 [ 167.540950][ C1] __linkwatch_run_queue+0x446/0x730 [ 167.546897][ C1] linkwatch_event+0x4c/0x60 [ 167.551506][ C1] process_one_work+0x7ef/0x10d0 [ 167.556555][ C1] worker_thread+0xc01/0x1630 [ 167.562212][ C1] kthread+0x332/0x350 [ 167.566453][ C1] ? rcu_lock_release+0x30/0x30 [ 167.573671][ C1] ? kthread_blkcg+0xe0/0xe0 [ 167.581260][ C1] ret_from_fork+0x24/0x30