Warning: Permanently added '10.128.0.86' (ECDSA) to the list of known hosts. 2019/12/03 08:01:13 fuzzer started 2019/12/03 08:01:14 dialing manager at 10.128.0.26:38907 2019/12/03 08:01:14 syscalls: 2697 2019/12/03 08:01:14 code coverage: enabled 2019/12/03 08:01:14 comparison tracing: enabled 2019/12/03 08:01:14 extra coverage: extra coverage is not supported by the kernel 2019/12/03 08:01:14 setuid sandbox: enabled 2019/12/03 08:01:14 namespace sandbox: enabled 2019/12/03 08:01:14 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 08:01:14 fault injection: enabled 2019/12/03 08:01:14 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 08:01:14 net packet injection: enabled 2019/12/03 08:01:14 net device setup: enabled 2019/12/03 08:01:14 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 08:01:14 devlink PCI setup: PCI device 0000:00:10.0 is not available 08:01:15 executing program 0: r0 = socket$kcm(0x10, 0x2, 0x0) perf_event_open(&(0x7f0000000180)={0x2, 0x70, 0xea, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0x0, 0xffffffffffffffff, 0x0) sendmsg$kcm(r0, &(0x7f0000000000)={0x0, 0x500, &(0x7f0000000080)=[{&(0x7f0000000cc0)="2e00000010008108040f80ecdb4cb9c00a480e1813000000ff050005bf008600002000000000000000ecff6b7e42", 0x2e}], 0x1}, 0x0) 08:01:16 executing program 1: unshare(0x600) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)={0xffffffffffffffff}) r1 = dup2(r0, r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) r2 = socket$inet6_sctp(0xa, 0x1, 0x84) setsockopt$inet_sctp6_SCTP_PARTIAL_DELIVERY_POINT(r2, 0x84, 0x13, &(0x7f0000000000), 0x4) syzkaller login: [ 56.918339][ T8342] IPVS: ftp: loaded support on port[0] = 21 [ 57.002213][ T8344] IPVS: ftp: loaded support on port[0] = 21 08:01:16 executing program 2: r0 = socket$inet6(0xa, 0x3, 0x7e) ioctl(r0, 0x1000008912, &(0x7f0000000000)="0815b5055e0bcfe87b3071") r1 = socket(0x10, 0x80002, 0x0) bind$netlink(r1, &(0x7f0000177ff4)={0x10, 0x0, 0x1}, 0xc) write(r1, &(0x7f0000000140)="2600000022004701050000000000000005006d20002b1f000a4a51f1ee839cd53400b017ca5b", 0x26) connect$netlink(r1, &(0x7f0000000040)=@proc={0x10, 0x0, 0x1}, 0xc) setsockopt$sock_int(r1, 0x1, 0x8, &(0x7f0000b4bffc), 0x4) sendto(r1, 0x0, 0x0, 0x0, 0x0, 0x0) setsockopt$netlink_NETLINK_NO_ENOBUFS(r1, 0x10e, 0x5, &(0x7f00000001c0)=0x100, 0x4) [ 57.138067][ T8342] chnl_net:caif_netlink_parms(): no params data found [ 57.152723][ T8344] chnl_net:caif_netlink_parms(): no params data found [ 57.238008][ T8344] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.263561][ T8344] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.271795][ T8344] device bridge_slave_0 entered promiscuous mode [ 57.296968][ T8342] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.305199][ T8342] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.323596][ T8342] device bridge_slave_0 entered promiscuous mode [ 57.332214][ T8344] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.345452][ T8344] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.364093][ T8344] device bridge_slave_1 entered promiscuous mode [ 57.374406][ T8342] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.381490][ T8342] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.389837][ T8342] device bridge_slave_1 entered promiscuous mode [ 57.420863][ T8342] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.423088][ T8348] IPVS: ftp: loaded support on port[0] = 21 [ 57.448314][ T8342] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.471080][ T8344] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.494667][ T8342] team0: Port device team_slave_0 added [ 57.505067][ T8344] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.521037][ T8342] team0: Port device team_slave_1 added 08:01:16 executing program 3: r0 = syz_open_dev$dri(&(0x7f0000000100)='/dev/dri/card#\x00', 0x1, 0x0) ioctl$DRM_IOCTL_MODE_GETCRTC(r0, 0xc06864a1, &(0x7f0000000140)={0x0, 0x0, 0x18, 0x0, 0x0, 0x0, 0x0, {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, "bb5d2f9074ba48c127839c481fda592b5ab137b98fd3326fdd0cdffb97bedf39"}}) [ 57.562509][ T8344] team0: Port device team_slave_0 added [ 57.570815][ T8344] team0: Port device team_slave_1 added [ 57.618146][ T8342] device hsr_slave_0 entered promiscuous mode [ 57.683777][ T8342] device hsr_slave_1 entered promiscuous mode 08:01:16 executing program 4: pipe(&(0x7f0000000400)={0xffffffffffffffff, 0xffffffffffffffff}) fsetxattr$security_smack_transmute(r0, &(0x7f0000000340)='security.SMACK64TRANSMUTE\x00', &(0x7f0000000380)='\x00\x00S\x00', 0x4, 0x0) [ 57.778058][ T8344] device hsr_slave_0 entered promiscuous mode [ 57.823600][ T8344] device hsr_slave_1 entered promiscuous mode [ 57.874963][ T8344] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.905349][ T8350] IPVS: ftp: loaded support on port[0] = 21 08:01:17 executing program 5: mkdir(&(0x7f00000009c0)='./file1\x00', 0x0) mount$overlay(0x0, &(0x7f0000000040)='./file1\x00', &(0x7f0000000080)='overlay\x00', 0x0, &(0x7f00000002c0)={[{@index_on='index=on'}], [{@smackfstransmute={'smackfstransmute', 0x3d, 'system.posix_acl_default\x00'}}]}) [ 58.012302][ T8348] chnl_net:caif_netlink_parms(): no params data found [ 58.086130][ T8342] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 58.199349][ T8342] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 58.237588][ T8342] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 58.287832][ T8342] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 58.359795][ T8354] IPVS: ftp: loaded support on port[0] = 21 [ 58.361099][ T8355] IPVS: ftp: loaded support on port[0] = 21 [ 58.419360][ T8348] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.427049][ T8348] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.435298][ T8348] device bridge_slave_0 entered promiscuous mode [ 58.443008][ T8344] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 58.495118][ T8344] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 58.543763][ T8348] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.550894][ T8348] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.560440][ T8348] device bridge_slave_1 entered promiscuous mode [ 58.578434][ T8344] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 58.646116][ T8348] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.657502][ T8348] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.667829][ T8344] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 58.764581][ T8348] team0: Port device team_slave_0 added [ 58.785398][ T8348] team0: Port device team_slave_1 added [ 58.876977][ T8348] device hsr_slave_0 entered promiscuous mode [ 58.943814][ T8348] device hsr_slave_1 entered promiscuous mode [ 58.993523][ T8348] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.015681][ T8350] chnl_net:caif_netlink_parms(): no params data found [ 59.065133][ T8354] chnl_net:caif_netlink_parms(): no params data found [ 59.101147][ T8355] chnl_net:caif_netlink_parms(): no params data found [ 59.160811][ T8348] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 59.208479][ T8350] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.216224][ T8350] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.224674][ T8350] device bridge_slave_0 entered promiscuous mode [ 59.255107][ T8348] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 59.304947][ T8350] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.312414][ T8350] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.321561][ T8350] device bridge_slave_1 entered promiscuous mode [ 59.339227][ T8342] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.348533][ T8354] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.358070][ T8354] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.367148][ T8354] device bridge_slave_0 entered promiscuous mode [ 59.374851][ T8355] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.381930][ T8355] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.391123][ T8355] device bridge_slave_0 entered promiscuous mode [ 59.398891][ T8348] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 59.467939][ T8350] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.479884][ T8350] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.499716][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 59.508548][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.516859][ T8354] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.524468][ T8354] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.532174][ T8354] device bridge_slave_1 entered promiscuous mode [ 59.545455][ T8355] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.552529][ T8355] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.560497][ T8355] device bridge_slave_1 entered promiscuous mode [ 59.568663][ T8348] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 59.634937][ T8354] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.650626][ T8354] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.664275][ T8342] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.679389][ T8350] team0: Port device team_slave_0 added [ 59.699041][ T8350] team0: Port device team_slave_1 added [ 59.707230][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 59.716659][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.725256][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.732552][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.740871][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 59.766050][ T8355] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.790777][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 59.799914][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.812830][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.819929][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.828035][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 59.836700][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 59.845201][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 59.854955][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 59.863513][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 59.871865][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 59.880570][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 59.888847][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 59.898894][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 59.908470][ T8355] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.922159][ T8354] team0: Port device team_slave_0 added [ 59.929270][ T8354] team0: Port device team_slave_1 added [ 59.985157][ T8350] device hsr_slave_0 entered promiscuous mode [ 60.014667][ T8350] device hsr_slave_1 entered promiscuous mode [ 60.053440][ T8350] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.097734][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 60.108182][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 60.122010][ T8342] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 60.175208][ T8354] device hsr_slave_0 entered promiscuous mode [ 60.213659][ T8354] device hsr_slave_1 entered promiscuous mode [ 60.253451][ T8354] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.266381][ T8344] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.276737][ T8355] team0: Port device team_slave_0 added [ 60.298157][ T8355] team0: Port device team_slave_1 added [ 60.356052][ T8355] device hsr_slave_0 entered promiscuous mode [ 60.393663][ T8355] device hsr_slave_1 entered promiscuous mode [ 60.433402][ T8355] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.467991][ T8344] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.478153][ T8350] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 60.536948][ T3696] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.545801][ T3696] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.556121][ T3696] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 60.563837][ T3696] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 60.585266][ T8348] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.592092][ T8355] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 60.625185][ T8355] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 60.676201][ T8355] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 60.737155][ T8350] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 60.806467][ T8350] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 60.858931][ T8350] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 60.913719][ T8348] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.921971][ T8355] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 60.951571][ T8357] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.959687][ T8357] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.981653][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 60.993503][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.002110][ T2708] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.009427][ T2708] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.017497][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 61.026382][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.035092][ T2708] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.042301][ T2708] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.050269][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 61.058865][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.070080][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 61.084643][ T8342] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 61.099213][ T8356] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 61.109049][ T8356] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.119734][ T8356] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.130428][ T8354] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 61.205696][ T8354] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 61.285166][ T8354] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 61.315835][ T3696] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 61.325464][ T3696] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.334593][ T3696] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.341909][ T3696] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.349780][ T3696] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 61.358760][ T3696] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.367542][ T3696] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 61.376061][ T3696] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 61.397026][ T8344] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 61.411479][ T8344] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 61.422975][ T8354] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 61.487976][ T3696] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 61.498318][ T3696] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 61.510294][ T3696] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.520404][ T3696] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.527845][ T3696] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.536457][ T3696] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 61.545730][ T3696] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 61.554383][ T3696] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 61.566178][ T3696] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.574939][ T3696] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 61.583604][ T3696] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.627106][ T8357] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.635629][ T8357] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 61.652516][ T8357] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 61.665897][ T8357] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 61.675346][ T8357] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.684152][ T8357] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 61.692892][ T8357] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 61.712085][ T8357] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 61.722672][ T8357] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 61.780106][ T8350] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.807844][ T8350] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.860212][ T8350] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 61.879325][ T8350] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 61.922740][ T8350] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 62.477739][ T8367] netlink: 14 bytes leftover after parsing attributes in process `syz-executor.0'. [ 166.703186][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 166.710040][ C1] rcu: 1-...!: (10499 ticks this GP) idle=1be/1/0x4000000000000002 softirq=11872/11872 fqs=40 [ 166.720620][ C1] (t=10501 jiffies g=6737 q=464) [ 166.725641][ C1] rcu: rcu_preempt kthread starved for 10421 jiffies! g6737 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 166.736727][ C1] rcu: RCU grace-period kthread stack dump: [ 166.742609][ C1] rcu_preempt R running task 29032 10 2 0x80004000 [ 166.750505][ C1] Call Trace: [ 166.754441][ C1] __schedule+0x9a0/0xcc0 [ 166.761643][ C1] schedule+0x181/0x210 [ 166.765797][ C1] schedule_timeout+0x14f/0x240 [ 166.771255][ C1] ? run_local_timers+0x120/0x120 [ 166.776297][ C1] rcu_gp_kthread+0xed8/0x1770 [ 166.781297][ C1] kthread+0x332/0x350 [ 166.785390][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 166.790507][ C1] ? kthread_blkcg+0xe0/0xe0 [ 166.795097][ C1] ret_from_fork+0x24/0x30 [ 166.799529][ C1] NMI backtrace for cpu 1 [ 166.803876][ C1] CPU: 1 PID: 8312 Comm: udevd Not tainted 5.4.0-syzkaller #0 [ 166.811527][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 166.821589][ C1] Call Trace: [ 166.824880][ C1] [ 166.828799][ C1] dump_stack+0x1fb/0x318 [ 166.833170][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 166.838021][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 166.844350][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 166.850407][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 166.856409][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 166.862404][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 166.867538][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 166.872755][ C1] ? trace_hardirqs_off+0x74/0x80 [ 166.877777][ C1] update_process_times+0x12d/0x180 [ 166.883006][ C1] tick_sched_timer+0x263/0x420 [ 166.887855][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 166.893401][ C1] __hrtimer_run_queues+0x403/0x840 [ 166.898625][ C1] hrtimer_interrupt+0x38c/0xda0 [ 166.903591][ C1] ? debug_smp_processor_id+0x9/0x20 [ 166.908921][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 166.914469][ C1] apic_timer_interrupt+0xf/0x20 [ 166.919400][ C1] [ 166.922348][ C1] RIP: 0010:__memcg_kmem_uncharge+0x2e/0x2e0 [ 166.928368][ C1] Code: 41 57 41 56 41 55 41 54 53 50 89 f3 49 89 fc 48 b8 00 00 00 00 00 fc ff df 4c 8d 77 38 4d 89 f5 49 c1 ed 03 41 80 7c 05 00 00 <74> 08 4c 89 f7 e8 d8 f4 fa ff 4d 8b 3e b8 01 00 00 00 89 d9 d3 e0 [ 166.947980][ C1] RSP: 0018:ffffc90001f97918 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 166.956407][ C1] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff88809f6e4640 [ 166.964561][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea00028ef500 [ 166.972535][ C1] RBP: ffffc90001f97948 R08: 000000000003a768 R09: ffffed1011a7f307 [ 166.980589][ C1] R10: ffffed1011a7f307 R11: 0000000000000000 R12: ffffea00028ef500 [ 166.988552][ C1] R13: 1ffffd400051dea7 R14: ffffea00028ef538 R15: ffff88808d3f9828 [ 166.996650][ C1] ? free_thread_stack+0x124/0x590 [ 167.002461][ C1] free_thread_stack+0x12e/0x590 [ 167.008156][ C1] put_task_stack+0xa3/0x130 [ 167.012748][ C1] finish_task_switch+0x3f1/0x550 [ 167.017777][ C1] __schedule+0x9a8/0xcc0 [ 167.022114][ C1] ? ___preempt_schedule+0x16/0x18 [ 167.027218][ C1] preempt_schedule+0xdb/0x120 [ 167.032081][ C1] ___preempt_schedule+0x16/0x18 [ 167.037012][ C1] ? __wake_up_sync_key+0xe2/0x150 [ 167.042110][ C1] _raw_spin_unlock_irqrestore+0xcc/0xe0 [ 167.047885][ C1] __wake_up_sync_key+0xe2/0x150 [ 167.052878][ C1] sock_def_readable+0x162/0x200 [ 167.057842][ C1] unix_dgram_sendmsg+0x1bd5/0x2690 [ 167.063081][ C1] ? __sys_sendmsg+0x20b/0x290 [ 167.067851][ C1] ? unix_dgram_poll+0x6b0/0x6b0 [ 167.073130][ C1] __sys_sendto+0x442/0x5e0 [ 167.077635][ C1] ? debug_smp_processor_id+0x1c/0x20 [ 167.082997][ C1] ? fpregs_assert_state_consistent+0xb6/0xe0 [ 167.089091][ C1] ? prepare_exit_to_usermode+0x221/0x5b0 [ 167.094899][ C1] ? check_preemption_disabled+0xb4/0x260 [ 167.100605][ C1] ? debug_smp_processor_id+0x9/0x20 [ 167.105906][ C1] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 167.111652][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 167.117126][ C1] __x64_sys_sendto+0xe5/0x100 [ 167.121903][ C1] do_syscall_64+0xf7/0x1c0 [ 167.126408][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 167.132640][ C1] RIP: 0033:0x7efe8fbfc282 [ 167.137048][ C1] Code: 48 83 c8 ff eb ea 90 90 53 48 83 ec 20 8b 05 81 d3 2a 00 85 c0 75 21 45 31 c9 45 31 c0 4c 63 d1 48 63 ff b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 61 48 83 c4 20 5b c3 48 89 54 24 08 89 0c 24 [ 167.158832][ C1] RSP: 002b:00007ffe2c0cce80 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 167.167320][ C1] RAX: ffffffffffffffda RBX: 00000000023ab310 RCX: 00007efe8fbfc282 [ 167.175282][ C1] RDX: 0000000000000008 RSI: 00007ffe2c0cced0 RDI: 0000000000000009 [ 167.184204][ C1] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 167.192518][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 167.200479][ C1] R13: 0000000002395e10 R14: 0000000002392250 R15: 000000000000000b