[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 45.516087][ T27] audit: type=1800 audit(1578482958.211:25): pid=8280 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 45.535216][ T27] audit: type=1800 audit(1578482958.221:26): pid=8280 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 45.581354][ T27] audit: type=1800 audit(1578482958.221:27): pid=8280 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 '10.128.0.61' (ECDSA) to the list of known hosts. 2020/01/08 11:29:26 fuzzer started 2020/01/08 11:29:28 dialing manager at 10.128.0.26:35703 2020/01/08 11:29:28 syscalls: 2824 2020/01/08 11:29:28 code coverage: enabled 2020/01/08 11:29:28 comparison tracing: enabled 2020/01/08 11:29:28 extra coverage: enabled 2020/01/08 11:29:28 setuid sandbox: enabled 2020/01/08 11:29:28 namespace sandbox: enabled 2020/01/08 11:29:28 Android sandbox: /sys/fs/selinux/policy does not exist 2020/01/08 11:29:28 fault injection: enabled 2020/01/08 11:29:28 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/01/08 11:29:28 net packet injection: enabled 2020/01/08 11:29:28 net device setup: enabled 2020/01/08 11:29:28 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2020/01/08 11:29:28 devlink PCI setup: PCI device 0000:00:10.0 is not available 11:29:29 executing program 0: pkey_mprotect(&(0x7f00004d8000/0x4000)=nil, 0x4000, 0x0, 0xffffffffffffffff) pipe2(&(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) vmsplice(r0, &(0x7f0000e79000)=[{&(0x7f00003fb000)="f7", 0xfdea}], 0x1, 0x0) socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}) r2 = dup(r1) ioctl$PERF_EVENT_IOC_ENABLE(r2, 0x8912, 0x400200) madvise(&(0x7f00003ec000/0x400000)=nil, 0x400000, 0x1000000000008) 11:29:29 executing program 1: unshare(0x2040600) r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000140)='/dev/net/tun\x00', 0x0, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, 0x0) syzkaller login: [ 57.123705][ T8446] IPVS: ftp: loaded support on port[0] = 21 [ 57.272144][ T8446] chnl_net:caif_netlink_parms(): no params data found [ 57.322014][ T8446] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.330201][ T8446] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.339340][ T8446] device bridge_slave_0 entered promiscuous mode [ 57.348527][ T8446] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.355663][ T8446] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.364868][ T8446] device bridge_slave_1 entered promiscuous mode [ 57.389663][ T8446] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.390796][ T8449] IPVS: ftp: loaded support on port[0] = 21 [ 57.405083][ T8446] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link 11:29:30 executing program 2: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000200)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, 0xffffffffffffffff, &(0x7f0000029000/0x18000)=nil, &(0x7f0000000240)=[@text32={0x20, &(0x7f00000000c0)="b9800000c00f3235010000000f309a090000006500660f3882af724d00002ed8ddc74424008fc4bd87c7442402c43a727fc7442406000000000f011424f30f090f013a360f06c4c18d72d68366baa100ed", 0x51}], 0x1, 0x0, 0x0, 0xa4) r2 = ioctl$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, &(0x7f0000000540)={[0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc5e]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f00000002c0)={0xffffffffffffffff, 0xffffffffffffffff}) r4 = socket$inet_udplite(0x2, 0x2, 0x88) r5 = dup2(r3, r4) ioctl$PERF_EVENT_IOC_ENABLE(r5, 0x8912, 0x400200) write$P9_RXATTRWALK(0xffffffffffffffff, &(0x7f0000000080)={0xf}, 0xf) ioctl$KVM_RUN(r2, 0xae80, 0x0) perf_event_open(&(0x7f0000000000)={0x1, 0x70, 0x3, 0x0, 0x0, 0x1f, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, @perf_config_ext}, 0x0, 0x0, 0xffffffffffffffff, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) [ 57.431120][ T8446] team0: Port device team_slave_0 added [ 57.438800][ T8446] team0: Port device team_slave_1 added [ 57.540551][ T8446] device hsr_slave_0 entered promiscuous mode 11:29:30 executing program 3: read(0xffffffffffffffff, 0x0, 0x0) socket$inet6(0xa, 0x0, 0x0) r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = eventfd2(0x0, 0x0) ioctl$KVM_IOEVENTFD(r1, 0x4040ae79, &(0x7f0000000080)={0x0, 0x0, 0x4, r2, 0x3}) [ 57.667169][ T8446] device hsr_slave_1 entered promiscuous mode [ 57.749304][ T8451] IPVS: ftp: loaded support on port[0] = 21 [ 57.834513][ T8453] IPVS: ftp: loaded support on port[0] = 21 11:29:30 executing program 4: socketpair$unix(0x1, 0x3, 0x0, &(0x7f0000000280)={0xffffffffffffffff, 0xffffffffffffffff}) r2 = fcntl$dupfd(r1, 0x0, r0) ioctl$PERF_EVENT_IOC_ENABLE(r2, 0x8912, 0x400200) ioctl$sock_inet_SIOCSIFFLAGS(0xffffffffffffffff, 0x8914, &(0x7f0000000000)={'rose0\x00'}) r3 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) r4 = ioctl$KVM_CREATE_VM(r3, 0xae01, 0x0) write$P9_RRENAMEAT(0xffffffffffffffff, &(0x7f0000000080)={0x7}, 0x7) ioctl$KVM_SET_USER_MEMORY_REGION(r4, 0x4020ae46, &(0x7f0000000740)={0x3, 0x2, 0xf000, 0x1000, &(0x7f0000000000/0x1000)=nil}) r5 = ioctl$KVM_CREATE_VCPU(r4, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r4, 0x4020ae46, &(0x7f0000000100)={0x0, 0x0, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) ioctl$KVM_SET_REGS(r5, 0x4090ae82, &(0x7f0000000500)={[0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xfb]}) ioctl$KVM_RUN(r5, 0xae80, 0x0) ioctl$KVM_RUN(r5, 0xae80, 0x0) ioctl$KVM_NMI(r5, 0xae9a) ioctl$KVM_SET_REGS(r5, 0x4090ae82, &(0x7f0000000380)) ioctl$KVM_RUN(r5, 0xae80, 0x0) [ 57.949060][ T8446] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 58.000084][ T8446] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 58.058484][ T8449] chnl_net:caif_netlink_parms(): no params data found [ 58.076800][ T8446] netdevsim netdevsim0 netdevsim2: renamed from eth2 11:29:30 executing program 5: r0 = socket$inet6(0xa, 0x3, 0x6b) ioctl(r0, 0x2001000008912, &(0x7f0000000000)="0815b5055e0bcfe87b3071") r1 = socket$inet6_sctp(0xa, 0x5, 0x84) r2 = socket$inet(0x2, 0x80001, 0x84) getsockopt$inet_sctp_SCTP_MAX_BURST(r2, 0x84, 0x14, &(0x7f0000000000)=@assoc_value={0x0}, &(0x7f0000000040)=0x8) getsockopt$inet_sctp6_SCTP_PR_ASSOC_STATUS(r1, 0x84, 0x10, &(0x7f0000000280)={r3}, &(0x7f00000002c0)=0x18) [ 58.148658][ T8446] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 58.269319][ T8456] IPVS: ftp: loaded support on port[0] = 21 [ 58.285517][ T8446] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.293039][ T8446] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.300750][ T8446] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.307845][ T8446] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.318770][ T5] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.327588][ T5] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.358520][ T8451] chnl_net:caif_netlink_parms(): no params data found [ 58.383778][ T8449] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.391662][ T8449] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.399839][ T8449] device bridge_slave_0 entered promiscuous mode [ 58.422977][ T8459] IPVS: ftp: loaded support on port[0] = 21 [ 58.447900][ T8449] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.455428][ T8449] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.463379][ T8449] device bridge_slave_1 entered promiscuous mode [ 58.483229][ T8449] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.511570][ T8453] chnl_net:caif_netlink_parms(): no params data found [ 58.525354][ T8449] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.547788][ T8451] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.555095][ T8451] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.564008][ T8451] device bridge_slave_0 entered promiscuous mode [ 58.575285][ T8451] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.582872][ T8451] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.590582][ T8451] device bridge_slave_1 entered promiscuous mode [ 58.659808][ T8451] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.681633][ T8449] team0: Port device team_slave_0 added [ 58.690062][ T8449] team0: Port device team_slave_1 added [ 58.696882][ T8451] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.717297][ T8446] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.728570][ T8456] chnl_net:caif_netlink_parms(): no params data found [ 58.819066][ T8449] device hsr_slave_0 entered promiscuous mode [ 58.887113][ T8449] device hsr_slave_1 entered promiscuous mode [ 58.936910][ T8449] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 58.944663][ T8449] Cannot create hsr debugfs directory [ 58.960774][ T8453] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.968152][ T8453] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.975812][ T8453] device bridge_slave_0 entered promiscuous mode [ 58.984350][ T8453] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.991505][ T8453] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.999526][ T8453] device bridge_slave_1 entered promiscuous mode [ 59.030902][ T8451] team0: Port device team_slave_0 added [ 59.041622][ T8456] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.050218][ T8456] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.058188][ T8456] device bridge_slave_0 entered promiscuous mode [ 59.066537][ T8456] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.073586][ T8456] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.081351][ T8456] device bridge_slave_1 entered promiscuous mode [ 59.102084][ T8456] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.113831][ T8456] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.127521][ T8451] team0: Port device team_slave_1 added [ 59.134479][ T8453] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.153010][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 59.161226][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.173798][ T8446] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.186865][ T8453] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.210919][ T8456] team0: Port device team_slave_0 added [ 59.218829][ T8456] team0: Port device team_slave_1 added [ 59.273931][ T8453] team0: Port device team_slave_0 added [ 59.287832][ T8453] team0: Port device team_slave_1 added [ 59.302579][ T2840] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 59.311188][ T2840] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.320182][ T2840] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.327394][ T2840] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.378992][ T8451] device hsr_slave_0 entered promiscuous mode [ 59.416787][ T8451] device hsr_slave_1 entered promiscuous mode [ 59.486401][ T8451] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 59.494085][ T8451] Cannot create hsr debugfs directory [ 59.524282][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 59.533717][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.545013][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.552144][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.580102][ T8459] chnl_net:caif_netlink_parms(): no params data found [ 59.659032][ T8456] device hsr_slave_0 entered promiscuous mode [ 59.707062][ T8456] device hsr_slave_1 entered promiscuous mode [ 59.766415][ T8456] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 59.773990][ T8456] Cannot create hsr debugfs directory [ 59.829062][ T8453] device hsr_slave_0 entered promiscuous mode [ 59.886718][ T8453] device hsr_slave_1 entered promiscuous mode [ 59.926396][ T8453] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 59.934045][ T8453] Cannot create hsr debugfs directory [ 59.940120][ T8463] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 59.948896][ T8463] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 59.992270][ T8463] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 60.001026][ T8463] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 60.010452][ T8463] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 60.018997][ T8463] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 60.030311][ T8463] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 60.075331][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 60.083995][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 60.092720][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 60.101028][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 60.125896][ T8449] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 60.192406][ T8449] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 60.240304][ T8449] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 60.294022][ T8446] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 60.315844][ T8449] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 60.348539][ T8459] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.355718][ T8459] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.363793][ T8459] device bridge_slave_0 entered promiscuous mode [ 60.412864][ T8459] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.420391][ T8459] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.429453][ T8459] device bridge_slave_1 entered promiscuous mode [ 60.447897][ T8446] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 60.470780][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 60.480042][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 60.496751][ T8453] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 60.558063][ T8453] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 60.601850][ T8453] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 60.658384][ T8453] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 60.698283][ T8456] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 60.740356][ T8456] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 60.782874][ T8456] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 60.818573][ T8456] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 60.864149][ T8459] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.879459][ T8459] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.933046][ T8451] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 60.963031][ T8459] team0: Port device team_slave_0 added [ 60.971973][ T8459] team0: Port device team_slave_1 added [ 60.995945][ T8451] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 61.049681][ T8451] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 61.109017][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 61.117933][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 61.168266][ T8459] device hsr_slave_0 entered promiscuous mode [ 61.216692][ T8459] device hsr_slave_1 entered promiscuous mode [ 61.256578][ T8459] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 61.264182][ T8459] Cannot create hsr debugfs directory [ 61.284473][ T8451] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 61.331257][ T2840] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 61.339734][ T2840] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 61.348768][ T2840] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 61.356749][ T2840] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 61.407704][ T8446] device veth0_vlan entered promiscuous mode [ 61.446063][ T8449] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.473366][ T8446] device veth1_vlan entered promiscuous mode [ 61.499731][ T8459] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 61.539325][ T8459] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 61.590938][ T8449] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.599087][ T2675] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.607352][ T2675] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.624464][ T8456] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.633744][ T8459] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 61.700589][ T8459] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 61.769577][ T8453] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.781781][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 61.791464][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.800343][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.807444][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.815813][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 61.859297][ T2840] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.874659][ T2840] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.884977][ T2840] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.892922][ T2840] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.900887][ T2840] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 61.909804][ T2840] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.918224][ T2840] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.925273][ T2840] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.934220][ T8456] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.942739][ T8453] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.955965][ T8451] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.002096][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 62.033805][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 62.043560][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.050689][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.064977][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 62.082213][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.091032][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.098260][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.112302][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 62.121355][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 62.135269][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 62.145412][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 167.026253][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 167.033096][ C0] rcu: 0-...!: (10499 ticks this GP) idle=93e/1/0x4000000000000002 softirq=10843/10844 fqs=149 [ 167.043764][ C0] (t=10501 jiffies g=6661 q=231) [ 167.048811][ C0] rcu: rcu_preempt kthread starved for 10203 jiffies! g6661 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 167.059898][ C0] rcu: RCU grace-period kthread stack dump: [ 167.065772][ C0] rcu_preempt R running task 28984 10 2 0x80004000 [ 167.073679][ C0] Call Trace: [ 167.076962][ C0] __schedule+0x9a0/0xcc0 [ 167.081292][ C0] schedule+0x181/0x210 [ 167.085442][ C0] schedule_timeout+0x14f/0x240 [ 167.090283][ C0] ? run_local_timers+0x120/0x120 [ 167.095300][ C0] rcu_gp_kthread+0xed8/0x1770 [ 167.100069][ C0] kthread+0x332/0x350 [ 167.104125][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 167.109226][ C0] ? kthread_blkcg+0xe0/0xe0 [ 167.113811][ C0] ret_from_fork+0x24/0x30 [ 167.118231][ C0] NMI backtrace for cpu 0 [ 167.122551][ C0] CPU: 0 PID: 8468 Comm: syz-executor.0 Not tainted 5.5.0-rc5-syzkaller #0 [ 167.131120][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 167.141161][ C0] Call Trace: [ 167.144431][ C0] [ 167.147282][ C0] dump_stack+0x1fb/0x318 [ 167.151611][ C0] nmi_cpu_backtrace+0xaf/0x1a0 [ 167.156448][ C0] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 167.162595][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 167.168649][ C0] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 167.174622][ C0] arch_trigger_cpumask_backtrace+0x10/0x20 [ 167.180505][ C0] rcu_dump_cpu_stacks+0x15a/0x220 [ 167.185613][ C0] rcu_sched_clock_irq+0xe25/0x1ad0 [ 167.190810][ C0] ? trace_hardirqs_off+0x74/0x80 [ 167.195826][ C0] update_process_times+0x12d/0x180 [ 167.201041][ C0] tick_sched_timer+0x263/0x420 [ 167.205905][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 167.211461][ C0] __hrtimer_run_queues+0x403/0x840 [ 167.216691][ C0] hrtimer_interrupt+0x38c/0xda0 [ 167.221644][ C0] ? debug_smp_processor_id+0x9/0x20 [ 167.226926][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 167.232466][ C0] apic_timer_interrupt+0xf/0x20 [ 167.237391][ C0] [ 167.240320][ C0] RIP: 0010:free_thread_stack+0x18b/0x590 [ 167.246030][ C0] 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 [ 167.265623][ C0] RSP: 0018:ffffc900020b76d8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 167.274021][ C0] RAX: 1ffff1100d380a71 RBX: ffff888069c05388 RCX: 0000000000040000 [ 167.281983][ C0] RDX: ffffc90002149000 RSI: 000000000003ffff RDI: 0000000000040000 [ 167.289941][ C0] RBP: ffffc900020b7710 R08: 000000000003a728 R09: ffffed1011dcf2a9 [ 167.297903][ C0] R10: ffffed1011dcf2a9 R11: 0000000000000000 R12: ffff888069c05420 [ 167.305866][ C0] R13: dffffc0000000000 R14: 1ffff1100d380a84 R15: ffff88808ee79538 [ 167.313843][ C0] ? free_thread_stack+0x168/0x590 [ 167.318946][ C0] put_task_stack+0xa3/0x130 [ 167.323612][ C0] finish_task_switch+0x3f1/0x550 [ 167.328631][ C0] __schedule+0x9a8/0xcc0 [ 167.332959][ C0] ? ___preempt_schedule+0x16/0x18 [ 167.338058][ C0] preempt_schedule+0xdb/0x120 [ 167.342810][ C0] ___preempt_schedule+0x16/0x18 [ 167.347737][ C0] ? page_poisoning_enabled+0x1c/0x30 [ 167.353098][ C0] prep_new_page+0x161/0x2e0 [ 167.357682][ C0] get_page_from_freelist+0x850/0xaa0 [ 167.363053][ C0] __alloc_pages_nodemask+0x264/0x5d0 [ 167.368423][ C0] alloc_pages_vma+0x94a/0xd50 [ 167.373182][ C0] do_huge_pmd_anonymous_page+0x883/0xe50 [ 167.378896][ C0] handle_mm_fault+0x2017/0x2890 [ 167.383848][ C0] do_user_addr_fault+0x589/0xaf0 [ 167.388876][ C0] __do_page_fault+0xd3/0x1f0 [ 167.393546][ C0] do_page_fault+0x99/0xb0 [ 167.397952][ C0] page_fault+0x39/0x40 [ 167.402095][ C0] RIP: 0010:copy_user_generic_unrolled+0x89/0xc0 [ 167.408411][ C0] Code: 38 4c 89 47 20 4c 89 4f 28 4c 89 57 30 4c 89 5f 38 48 8d 76 40 48 8d 7f 40 ff c9 75 b6 89 d1 83 e2 07 c1 e9 03 74 12 4c 8b 06 <4c> 89 07 48 8d 76 08 48 8d 7f 08 ff c9 75 ee 21 d2 74 10 89 d1 8a [ 167.428005][ C0] RSP: 0018:ffffc900020b7e50 EFLAGS: 00010202 [ 167.434058][ C0] RAX: ffffffff839b2501 RBX: 0000000020000008 RCX: 0000000000000001 [ 167.442017][ C0] RDX: 0000000000000000 RSI: ffffc900020b7e98 RDI: 0000000020000000 [ 167.449977][ C0] RBP: ffffc900020b7e80 R08: 0000000400000003 R09: fffff52000416fd4 [ 167.458196][ C0] R10: fffff52000416fd4 R11: 0000000000000000 R12: 0000000000000008 [ 167.466182][ C0] R13: 00007ffffffff000 R14: ffffc900020b7e98 R15: 0000000020000000 [ 167.474194][ C0] ? _copy_to_user+0x11/0x150 [ 167.478894][ C0] ? _copy_to_user+0x104/0x150 [ 167.483670][ C0] do_pipe2+0x79/0x230 [ 167.487745][ C0] __x64_sys_pipe2+0x5a/0x70 [ 167.492336][ C0] do_syscall_64+0xf7/0x1c0 [ 167.496832][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 167.502712][ C0] RIP: 0033:0x45af49 [ 167.506622][ C0] Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 167.526212][ C0] RSP: 002b:00007f259c27dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000125 [ 167.534611][ C0] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 000000000045af49 [ 167.543267][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000 [ 167.551226][ C0] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 167.559189][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f259c27e6d4 [ 167.567147][ C0] R13: 00000000004c90bd R14: 00000000004e1938 R15: 00000000ffffffff