[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 54.135974][ T23] audit: type=1800 audit(1578465882.406:25): pid=8257 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 54.156523][ T23] audit: type=1800 audit(1578465882.406:26): pid=8257 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 54.191721][ T23] audit: type=1800 audit(1578465882.406:27): pid=8257 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. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.196' (ECDSA) to the list of known hosts. 2020/01/08 06:44:54 fuzzer started 2020/01/08 06:44:56 dialing manager at 10.128.0.26:35703 2020/01/08 06:44:56 syscalls: 2824 2020/01/08 06:44:56 code coverage: enabled 2020/01/08 06:44:56 comparison tracing: enabled 2020/01/08 06:44:56 extra coverage: enabled 2020/01/08 06:44:56 setuid sandbox: enabled 2020/01/08 06:44:56 namespace sandbox: enabled 2020/01/08 06:44:56 Android sandbox: /sys/fs/selinux/policy does not exist 2020/01/08 06:44:56 fault injection: enabled 2020/01/08 06:44:56 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/01/08 06:44:56 net packet injection: enabled 2020/01/08 06:44:56 net device setup: enabled 2020/01/08 06:44:56 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2020/01/08 06:44:56 devlink PCI setup: PCI device 0000:00:10.0 is not available 06:44:57 executing program 0: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000200)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, 0xffffffffffffffff, &(0x7f0000029000/0x18000)=nil, &(0x7f0000000240)=[@text32={0x20, &(0x7f0000000140)="b9800000c00f3263350100000000309a49000000650c660f3882af724d0000c74424007d720000c744240206000000c7442406000000000f011424c74424008fc4bd87c7442402c43a727fdcc3c47224060000000000001424f30f090f013a360f06c4c18d72d68366baa100ed", 0x6d}], 0x1, 0x0, 0x0, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000bf7000)={0x0, 0x0, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) ioctl$KVM_SET_REGS(r2, 0x4090ae82, &(0x7f0000000380)={[0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc5e]}) ioctl$KVM_RUN(r2, 0xae80, 0x0) perf_event_open(&(0x7f0000000000)={0x5, 0x70, 0x3, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, @perf_config_ext}, 0x0, 0x0, 0xffffffffffffffff, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) 06:44:57 executing program 1: r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000005500)='/dev/ptmx\x00', 0x0, 0x0) ioctl$TCSETS(r0, 0x40045431, &(0x7f00003b9fdc)) r1 = ioctl$TIOCGPTPEER(r0, 0x5441, 0x0) ioctl$TIOCVHANGUP(r1, 0x5437, 0x0) ioctl$TCSETS(r0, 0x5402, &(0x7f00000000c0)={0x0, 0x0, 0x0, 0x0, 0x4}) syz_open_pts(r0, 0x0) syzkaller login: [ 69.425198][ T8425] IPVS: ftp: loaded support on port[0] = 21 [ 69.497972][ T8427] IPVS: ftp: loaded support on port[0] = 21 06:44:57 executing program 2: r0 = creat(&(0x7f0000000000)='./bus\x00', 0x0) r1 = creat(&(0x7f0000000040)='./bus\x00', 0x0) fcntl$setstatus(r1, 0x4, 0x24000) io_setup(0x8, &(0x7f00000004c0)=0x0) io_submit(r2, 0xc2, &(0x7f0000000540)=[&(0x7f00000000c0)={0x0, 0x0, 0x0, 0x1, 0x0, r1, &(0x7f0000000000), 0x10000}]) io_submit(r2, 0x2271, &(0x7f0000000540)) fallocate(r0, 0x100000003, 0x0, 0x2811fffd) [ 69.613945][ T8427] chnl_net:caif_netlink_parms(): no params data found [ 69.672323][ T8425] chnl_net:caif_netlink_parms(): no params data found [ 69.753017][ T8427] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.766799][ T8427] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.774670][ T8427] device bridge_slave_0 entered promiscuous mode [ 69.791427][ T8427] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.800428][ T8427] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.810473][ T8427] device bridge_slave_1 entered promiscuous mode [ 69.834073][ T8425] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.843115][ T8425] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.851198][ T8425] device bridge_slave_0 entered promiscuous mode [ 69.868355][ T8427] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.880078][ T8425] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.897664][ T8431] IPVS: ftp: loaded support on port[0] = 21 [ 69.906120][ T8425] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.913860][ T8425] device bridge_slave_1 entered promiscuous mode [ 69.923210][ T8427] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.976269][ T8427] team0: Port device team_slave_0 added [ 69.991378][ T8427] team0: Port device team_slave_1 added 06:44:58 executing program 3: unshare(0x2040400) creat(&(0x7f0000000040)='./file0\x00', 0x0) r0 = open(&(0x7f0000000000)='./file0\x00', 0x200000, 0x0) bpf$PROG_LOAD(0x5, &(0x7f0000000140)={0x1a, 0x1, &(0x7f0000000200)=@raw=[@ldst], &(0x7f0000000040)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, [], 0x0, 0x0, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, r0}, 0x78) [ 70.017929][ T8425] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 70.069081][ T8427] device hsr_slave_0 entered promiscuous mode [ 70.115856][ T8427] device hsr_slave_1 entered promiscuous mode [ 70.168325][ T8425] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 70.210782][ T8433] IPVS: ftp: loaded support on port[0] = 21 06:44:58 executing program 4: r0 = socket$netlink(0x10, 0x3, 0x10000000004) r1 = socket$netlink(0x10, 0x3, 0x0) bind$netlink(r1, &(0x7f0000514ff4)={0x10, 0x0, 0x0, 0x2ffffffff}, 0xc) r2 = socket$netlink(0x10, 0x3, 0x0) bind$netlink(r2, &(0x7f0000514ff4)={0x10, 0x0, 0x0, 0x2ffffffff}, 0xc) write(r0, &(0x7f0000000100)="2700000014000707030e0000120f0a0010000100f5fe001259f338c57410e8a99f47ff00000007", 0xfdef) recvfrom(r0, 0x0, 0x0, 0x0, 0x0, 0x0) [ 70.257299][ T8425] team0: Port device team_slave_0 added [ 70.283523][ T8425] team0: Port device team_slave_1 added [ 70.439765][ T8425] device hsr_slave_0 entered promiscuous mode 06:44:58 executing program 5: r0 = socket$inet6_icmp_raw(0xa, 0x3, 0x3a) bind$inet6(r0, &(0x7f0000000100)={0xa, 0x0, 0x0, @mcast2, 0x100000001}, 0x1c) bind$inet6(r0, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast1}, 0x18) [ 70.565927][ T8425] device hsr_slave_1 entered promiscuous mode [ 70.596288][ T8425] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 70.607853][ T8425] Cannot create hsr debugfs directory [ 70.632870][ T8427] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 70.688141][ T8431] chnl_net:caif_netlink_parms(): no params data found [ 70.701866][ T8436] IPVS: ftp: loaded support on port[0] = 21 [ 70.715597][ T8427] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 70.768164][ T8427] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 70.832894][ T8427] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 70.889326][ T8438] IPVS: ftp: loaded support on port[0] = 21 [ 70.952303][ T8433] chnl_net:caif_netlink_parms(): no params data found [ 71.014638][ T8431] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.027221][ T8431] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.035084][ T8431] device bridge_slave_0 entered promiscuous mode [ 71.054161][ T8433] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.061510][ T8433] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.069665][ T8433] device bridge_slave_0 entered promiscuous mode [ 71.080371][ T8433] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.087580][ T8433] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.095283][ T8433] device bridge_slave_1 entered promiscuous mode [ 71.116324][ T8431] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.123399][ T8431] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.131678][ T8431] device bridge_slave_1 entered promiscuous mode [ 71.152778][ T8431] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.181921][ T8425] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 71.239273][ T8425] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 71.298477][ T8431] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.315309][ T8433] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.335294][ T8425] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 71.391929][ T8425] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 71.465812][ T8433] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.489169][ T8431] team0: Port device team_slave_0 added [ 71.501075][ T8431] team0: Port device team_slave_1 added [ 71.529822][ T8433] team0: Port device team_slave_0 added [ 71.539444][ T8433] team0: Port device team_slave_1 added [ 71.638276][ T8433] device hsr_slave_0 entered promiscuous mode [ 71.685848][ T8433] device hsr_slave_1 entered promiscuous mode [ 71.735628][ T8433] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 71.743343][ T8433] Cannot create hsr debugfs directory [ 71.788274][ T8431] device hsr_slave_0 entered promiscuous mode [ 71.826065][ T8431] device hsr_slave_1 entered promiscuous mode [ 71.895626][ T8431] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 71.903320][ T8431] Cannot create hsr debugfs directory [ 71.939720][ T8438] chnl_net:caif_netlink_parms(): no params data found [ 71.976285][ T8436] chnl_net:caif_netlink_parms(): no params data found [ 71.990391][ T8427] 8021q: adding VLAN 0 to HW filter on device bond0 [ 72.064409][ T8427] 8021q: adding VLAN 0 to HW filter on device team0 [ 72.083167][ T3152] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 72.091784][ T3152] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 72.124756][ T8438] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.136913][ T8438] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.144557][ T8438] device bridge_slave_0 entered promiscuous mode [ 72.183480][ T8436] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.193692][ T8436] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.202022][ T8436] device bridge_slave_0 entered promiscuous mode [ 72.211130][ T8438] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.218992][ T8438] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.227309][ T8438] device bridge_slave_1 entered promiscuous mode [ 72.234214][ T3202] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 72.243648][ T3202] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 72.252632][ T3202] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.259825][ T3202] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.268131][ T3202] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 72.277661][ T3202] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 72.286122][ T3202] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.293563][ T3202] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.301178][ T3202] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 72.309810][ T3202] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 72.321505][ T8425] 8021q: adding VLAN 0 to HW filter on device bond0 [ 72.333335][ T8436] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.343507][ T8436] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.352592][ T8436] device bridge_slave_1 entered promiscuous mode [ 72.374924][ T8436] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.384772][ T3202] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 72.423298][ T8436] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.433709][ T2717] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 72.442850][ T2717] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 72.452351][ T2717] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 72.461260][ T2717] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 72.470113][ T2717] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 72.478712][ T2717] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 72.486759][ T2717] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 72.495212][ T2717] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 72.504209][ T8431] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 72.551279][ T8425] 8021q: adding VLAN 0 to HW filter on device team0 [ 72.563124][ T8438] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.581681][ T8438] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.592024][ T2717] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 72.603008][ T8431] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 72.668114][ T8436] team0: Port device team_slave_0 added [ 72.676725][ T8436] team0: Port device team_slave_1 added [ 72.685929][ T2676] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 72.694277][ T2676] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 72.709680][ T8433] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 72.767432][ T8431] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 72.812284][ T8431] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 72.872180][ T8427] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 72.883446][ T3202] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 72.892959][ T3202] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 72.904292][ T3202] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.914048][ T3202] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.922963][ T8433] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 72.979097][ T8438] team0: Port device team_slave_0 added [ 72.985173][ T8433] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 73.050101][ T2670] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 73.060869][ T8438] team0: Port device team_slave_1 added [ 73.067217][ T8433] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 73.127287][ T2717] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 73.137907][ T2717] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 73.147604][ T2717] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.154774][ T2717] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.162775][ T2717] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 73.207314][ T8436] device hsr_slave_0 entered promiscuous mode [ 73.266073][ T8436] device hsr_slave_1 entered promiscuous mode [ 73.315789][ T8436] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 73.323665][ T8436] Cannot create hsr debugfs directory [ 73.378890][ T8438] device hsr_slave_0 entered promiscuous mode [ 73.405931][ T8438] device hsr_slave_1 entered promiscuous mode [ 73.446017][ T8438] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 73.454645][ T8438] Cannot create hsr debugfs directory [ 73.460860][ T2676] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 73.472179][ T2676] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 73.480443][ T2676] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 73.502460][ T8427] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 73.512783][ T2676] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 73.522207][ T2676] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 73.531243][ T2676] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 73.583058][ T2670] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 73.591712][ T2670] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 73.622590][ T2670] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 73.632472][ T2670] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 73.641723][ T2670] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 73.650535][ T2670] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 73.692070][ T2676] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 73.704095][ T2676] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 73.728242][ T8425] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 73.739245][ T8431] 8021q: adding VLAN 0 to HW filter on device bond0 [ 73.758159][ T8433] 8021q: adding VLAN 0 to HW filter on device bond0 [ 73.772045][ T2676] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 73.781777][ T2676] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 73.793883][ T2717] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 73.801733][ T2717] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 73.818720][ T8427] device veth0_vlan entered promiscuous mode [ 73.835305][ T2670] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 73.844733][ T2670] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 73.875396][ T8433] 8021q: adding VLAN 0 to HW filter on device team0 [ 73.891280][ T8438] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 73.940197][ T8438] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 73.997825][ T8427] device veth1_vlan entered promiscuous mode [ 74.018886][ T8438] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 74.058779][ T2676] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 74.067612][ T2676] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 74.076285][ T2676] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 74.084587][ T2676] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.092161][ T2676] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.100180][ T2676] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 74.108517][ T2676] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 74.116407][ T2676] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 74.123822][ T2676] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 74.145919][ T8425] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 74.154034][ T2717] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 74.176447][ T8438] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 74.214049][ T3152] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 74.223056][ T3152] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 74.231869][ T3152] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.239009][ T3152] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.250905][ T3152] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 74.269473][ T8431] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.318953][ T8436] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 179.365449][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 179.372580][ C1] rcu: 1-...!: (10499 ticks this GP) idle=29a/1/0x4000000000000002 softirq=13390/13390 fqs=0 [ 179.383904][ C1] (t=10501 jiffies g=6897 q=67) [ 179.388937][ C1] rcu: rcu_preempt kthread starved for 10502 jiffies! g6897 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 179.400376][ C1] rcu: RCU grace-period kthread stack dump: [ 179.406382][ C1] rcu_preempt R running task 29032 10 2 0x80004000 [ 179.414530][ C1] Call Trace: [ 179.417932][ C1] __schedule+0x9a0/0xcc0 [ 179.422574][ C1] schedule+0x181/0x210 [ 179.426774][ C1] schedule_timeout+0x14f/0x240 [ 179.431891][ C1] ? run_local_timers+0x120/0x120 [ 179.437278][ C1] rcu_gp_kthread+0xed8/0x1770 [ 179.442174][ C1] kthread+0x332/0x350 [ 179.446475][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 179.452469][ C1] ? kthread_blkcg+0xe0/0xe0 [ 179.457165][ C1] ret_from_fork+0x24/0x30 [ 179.461875][ C1] NMI backtrace for cpu 1 [ 179.466289][ C1] CPU: 1 PID: 8443 Comm: blkid Not tainted 5.5.0-rc5-syzkaller #0 [ 179.474085][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 179.484452][ C1] Call Trace: [ 179.487886][ C1] [ 179.490748][ C1] dump_stack+0x1fb/0x318 [ 179.495089][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 179.500147][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 179.506398][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 179.512639][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 179.518797][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 179.525036][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 179.530484][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 179.535701][ C1] ? trace_hardirqs_off+0x74/0x80 [ 179.540844][ C1] update_process_times+0x12d/0x180 [ 179.546450][ C1] tick_sched_timer+0x263/0x420 [ 179.551500][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 179.557073][ C1] __hrtimer_run_queues+0x403/0x840 [ 179.562505][ C1] hrtimer_interrupt+0x38c/0xda0 [ 179.567643][ C1] ? debug_smp_processor_id+0x9/0x20 [ 179.573112][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 179.578756][ C1] apic_timer_interrupt+0xf/0x20 [ 179.583688][ C1] [ 179.586650][ C1] RIP: 0010:free_thread_stack+0x18b/0x590 [ 179.592454][ C1] Code: ff ff e8 28 04 00 00 43 80 3c 2e 00 74 08 4c 89 e7 e8 39 94 6a 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 1b 94 6a 00 48 8b 1b e9 82 ff ff ff e8 be 2b 2e [ 179.612491][ C1] RSP: 0018:ffffc900025c7b98 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 179.621014][ C1] RAX: 1ffff11012e15071 RBX: ffff8880970a8388 RCX: ffff8880a261c340 [ 179.629203][ C1] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea0002572ac0 [ 179.637297][ C1] RBP: ffffc900025c7bd0 R08: 000000000003a728 R09: ffffed1011971f29 [ 179.645359][ C1] R10: ffffed1011971f29 R11: 0000000000000000 R12: ffff8880970a8420 [ 179.657014][ C1] R13: dffffc0000000000 R14: 1ffff11012e15084 R15: ffff88808cb8f938 [ 179.668375][ C1] ? free_thread_stack+0x168/0x590 [ 179.673498][ C1] put_task_stack+0xa3/0x130 [ 179.678271][ C1] finish_task_switch+0x3f1/0x550 [ 179.683396][ C1] __schedule+0x9a8/0xcc0 [ 179.687741][ C1] ? ___preempt_schedule+0x16/0x18 [ 179.692857][ C1] preempt_schedule+0xdb/0x120 [ 179.697620][ C1] ___preempt_schedule+0x16/0x18 [ 179.703007][ C1] ? do_exit+0x147c/0x2000 [ 179.707422][ C1] _raw_write_unlock_irq+0x77/0x80 [ 179.712542][ C1] do_exit+0x147c/0x2000 [ 179.716799][ C1] do_group_exit+0x15c/0x2b0 [ 179.721681][ C1] __do_sys_exit_group+0x17/0x20 [ 179.726636][ C1] __se_sys_exit_group+0x14/0x20 [ 179.731975][ C1] __x64_sys_exit_group+0x3b/0x40 [ 179.737009][ C1] do_syscall_64+0xf7/0x1c0 [ 179.741567][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 179.747634][ C1] RIP: 0033:0x7f481e6271e8 [ 179.752203][ C1] Code: Bad RIP value. [ 179.756489][ C1] RSP: 002b:00007fff027cc858 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 179.765077][ C1] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f481e6271e8 [ 179.773230][ C1] RDX: 0000000000000002 RSI: 000000000000003c RDI: 0000000000000002 [ 179.781555][ C1] RBP: 00007f481e8fc840 R08: 00000000000000e7 R09: ffffffffffffffa8 [ 179.790052][ C1] R10: 00007f481e902740 R11: 0000000000000246 R12: 00007f481e8fc840 [ 179.798390][ C1] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000