[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 54.241140][ T23] audit: type=1800 audit(1578467764.620:25): pid=8452 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 54.260120][ T23] audit: type=1800 audit(1578467764.620:26): pid=8452 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 54.280766][ T23] audit: type=1800 audit(1578467764.630:27): pid=8452 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 '10.128.1.27' (ECDSA) to the list of known hosts. 2020/01/08 07:16:16 fuzzer started 2020/01/08 07:16:18 dialing manager at 10.128.0.26:35703 2020/01/08 07:16:18 syscalls: 2824 2020/01/08 07:16:18 code coverage: enabled 2020/01/08 07:16:18 comparison tracing: enabled 2020/01/08 07:16:18 extra coverage: enabled 2020/01/08 07:16:18 setuid sandbox: enabled 2020/01/08 07:16:18 namespace sandbox: enabled 2020/01/08 07:16:18 Android sandbox: /sys/fs/selinux/policy does not exist 2020/01/08 07:16:18 fault injection: enabled 2020/01/08 07:16:18 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/01/08 07:16:18 net packet injection: enabled 2020/01/08 07:16:18 net device setup: enabled 2020/01/08 07:16:18 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2020/01/08 07:16:18 devlink PCI setup: PCI device 0000:00:10.0 is not available 07:16:20 executing program 0: r0 = socket$inet(0x2, 0x80001, 0x84) bind$inet(r0, &(0x7f0000000180)={0x2, 0x4e20, @local}, 0x10) listen(r0, 0x3) r1 = socket$inet(0x2, 0x80001, 0x84) setsockopt$sock_int(r1, 0x1, 0xf, &(0x7f0000000280)=0x3, 0x4) bind$inet(r1, &(0x7f0000000180)={0x2, 0x4e20, @dev={0xac, 0x14, 0x14, 0x13}}, 0x10) listen(r1, 0x3) 07:16:20 executing program 1: mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup/syz0\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x0) mount$fuse(0x20000000, &(0x7f0000000040)='./file0\x00', 0x0, 0x97a0c, 0x0) r0 = open(&(0x7f0000000280)='./file0\x00', 0x0, 0x0) r1 = openat$cgroup_procs(r0, &(0x7f0000000080)='tasks\x00', 0x2, 0x0) write$cgroup_pid(r1, &(0x7f0000000640), 0x12) syzkaller login: [ 69.843715][ T8621] IPVS: ftp: loaded support on port[0] = 21 [ 69.956194][ T8621] chnl_net:caif_netlink_parms(): no params data found [ 69.999292][ T8621] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.034977][ T8621] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.042932][ T8621] device bridge_slave_0 entered promiscuous mode [ 70.067590][ T8621] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.074712][ T8621] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.086594][ T8621] device bridge_slave_1 entered promiscuous mode [ 70.100869][ T8624] IPVS: ftp: loaded support on port[0] = 21 07:16:20 executing program 2: perf_event_open(0x0, 0x0, 0x0, 0xffffffffffffffff, 0x0) r0 = syz_open_dev$usbfs(&(0x7f0000000000)='/dev/bus/usb/00#/00#\x00', 0x77, 0x1) ioctl$USBDEVFS_CONTROL(r0, 0x80045515, 0x0) [ 70.132382][ T8621] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 70.158554][ T8621] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 70.218739][ T8621] team0: Port device team_slave_0 added [ 70.238659][ T8621] team0: Port device team_slave_1 added 07:16:20 executing program 3: prctl$PR_SET_PTRACER(0x59616d61, 0xffffffffffffffff) clone(0x100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff) r0 = gettid() wait4(0x0, 0x0, 0x80000002, 0x0) vmsplice(0xffffffffffffffff, &(0x7f00000000c0)=[{0x0}, {0x0}, {0x0}, {&(0x7f0000001380)="6653070000053c07bc3376003639405cb4ae", 0x12}], 0x4, 0x0) ptrace$setopts(0x4206, r0, 0x0, 0x0) tkill(r0, 0x3c) ptrace$cont(0x18, r0, 0x0, 0x0) r1 = socket$inet6_tcp(0xa, 0x1, 0x0) r2 = fcntl$dupfd(r1, 0x0, r1) ioctl$PERF_EVENT_IOC_ENABLE(r2, 0x8912, 0x400200) ptrace$setregs(0xd, r0, 0x0, &(0x7f0000000080)) ptrace$cont(0x20, r0, 0x0, 0x0) [ 70.437727][ T8621] device hsr_slave_0 entered promiscuous mode [ 70.485125][ T8621] device hsr_slave_1 entered promiscuous mode [ 70.530909][ T8624] chnl_net:caif_netlink_parms(): no params data found [ 70.540417][ T8627] IPVS: ftp: loaded support on port[0] = 21 [ 70.580592][ T8629] IPVS: ftp: loaded support on port[0] = 21 07:16:21 executing program 4: r0 = socket$netlink(0x10, 0x3, 0x0) writev(r0, &(0x7f0000000000)=[{&(0x7f00000000c0)="290000002000190710003fffffffda060200080000000000000000040d000200000000000000000001", 0x29}], 0x1) [ 70.671399][ T8624] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.683127][ T8624] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.693079][ T8624] device bridge_slave_0 entered promiscuous mode [ 70.737217][ T8624] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.744313][ T8624] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.754373][ T8624] device bridge_slave_1 entered promiscuous mode [ 70.813816][ T8624] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 70.858789][ T8624] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 70.960407][ T8621] netdevsim netdevsim0 netdevsim0: renamed from eth0 07:16:21 executing program 5: r0 = socket$inet_udplite(0x2, 0x2, 0x88) ioctl(r0, 0x1000008912, &(0x7f00000000c0)="0800a1695e1dcfe87b1071") sendmsg(0xffffffffffffffff, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000009ff0)=[{&(0x7f0000000080)="240000000e0607051dfffd946fa2830020200a0009000100071d85680c1baba20400ff7e", 0x24}], 0x1}, 0x0) r1 = socket(0x10, 0x80002, 0xc) sendmmsg$alg(r1, &(0x7f0000000140), 0x492492492492805, 0x0) [ 71.009334][ T8621] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 71.111598][ T8624] team0: Port device team_slave_0 added [ 71.119870][ T8624] team0: Port device team_slave_1 added [ 71.126343][ T8621] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 71.167406][ T8621] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 71.221579][ T8633] IPVS: ftp: loaded support on port[0] = 21 [ 71.230420][ T8629] chnl_net:caif_netlink_parms(): no params data found [ 71.240006][ T8627] chnl_net:caif_netlink_parms(): no params data found [ 71.263364][ T8635] IPVS: ftp: loaded support on port[0] = 21 [ 71.317925][ T8624] device hsr_slave_0 entered promiscuous mode [ 71.385236][ T8624] device hsr_slave_1 entered promiscuous mode [ 71.424929][ T8624] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 71.432710][ T8624] Cannot create hsr debugfs directory [ 71.543242][ T8629] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.550459][ T8629] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.558242][ T8629] device bridge_slave_0 entered promiscuous mode [ 71.571081][ T8627] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.579093][ T8627] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.586923][ T8627] device bridge_slave_0 entered promiscuous mode [ 71.602402][ T8629] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.610797][ T8629] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.618548][ T8629] device bridge_slave_1 entered promiscuous mode [ 71.630601][ T8627] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.638151][ T8627] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.645994][ T8627] device bridge_slave_1 entered promiscuous mode [ 71.719020][ T8627] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.734502][ T8621] 8021q: adding VLAN 0 to HW filter on device bond0 [ 71.746072][ T8629] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 71.757817][ T8629] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.779985][ T8627] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 71.835757][ T8627] team0: Port device team_slave_0 added [ 71.863993][ T8629] team0: Port device team_slave_0 added [ 71.876838][ T8624] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 71.928576][ T8627] team0: Port device team_slave_1 added [ 71.934361][ T8624] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 71.987442][ T8633] chnl_net:caif_netlink_parms(): no params data found [ 72.012607][ T2715] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 72.021520][ T2715] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 72.030588][ T8629] team0: Port device team_slave_1 added [ 72.043778][ T8624] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 72.103236][ T8635] chnl_net:caif_netlink_parms(): no params data found [ 72.115875][ T8621] 8021q: adding VLAN 0 to HW filter on device team0 [ 72.137352][ T8624] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 72.237898][ T8629] device hsr_slave_0 entered promiscuous mode [ 72.275269][ T8629] device hsr_slave_1 entered promiscuous mode [ 72.314969][ T8629] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 72.322555][ T8629] Cannot create hsr debugfs directory [ 72.377524][ T8627] device hsr_slave_0 entered promiscuous mode [ 72.425118][ T8627] device hsr_slave_1 entered promiscuous mode [ 72.474977][ T8627] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 72.482569][ T8627] Cannot create hsr debugfs directory [ 72.508519][ T3181] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 72.517088][ T3181] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 72.526011][ T3181] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.533295][ T3181] bridge0: port 1(bridge_slave_0) entered forwarding state [ 72.584123][ T3180] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 72.592372][ T3180] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 72.602370][ T3180] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 72.610968][ T3180] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.618056][ T3180] bridge0: port 2(bridge_slave_1) entered forwarding state [ 72.634487][ T8633] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.643263][ T8633] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.651513][ T8633] device bridge_slave_0 entered promiscuous mode [ 72.663447][ T8633] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.670571][ T8633] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.678476][ T8633] device bridge_slave_1 entered promiscuous mode [ 72.694895][ T3181] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 72.703472][ T3181] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 72.712084][ T3181] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 72.720549][ T3181] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 72.729320][ T3181] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 72.737869][ T3181] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 72.746913][ T3181] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 72.768418][ T8635] bridge0: port 1(bridge_slave_0) entered blocking state [ 72.776634][ T8635] bridge0: port 1(bridge_slave_0) entered disabled state [ 72.784382][ T8635] device bridge_slave_0 entered promiscuous mode [ 72.803961][ T8633] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.817948][ T8633] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 72.837703][ T8635] bridge0: port 2(bridge_slave_1) entered blocking state [ 72.845411][ T8635] bridge0: port 2(bridge_slave_1) entered disabled state [ 72.853008][ T8635] device bridge_slave_1 entered promiscuous mode [ 72.895785][ T2715] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 72.904154][ T2715] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 72.913737][ T2715] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 72.922434][ T2715] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 72.946730][ T8621] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 72.961451][ T8633] team0: Port device team_slave_0 added [ 72.972666][ T8635] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 72.987959][ T8635] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 73.020366][ T8633] team0: Port device team_slave_1 added [ 73.032920][ T8624] 8021q: adding VLAN 0 to HW filter on device bond0 [ 73.057043][ T8635] team0: Port device team_slave_0 added [ 73.065326][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 73.072780][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 73.083714][ T8621] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 73.157781][ T8633] device hsr_slave_0 entered promiscuous mode [ 73.216428][ T8633] device hsr_slave_1 entered promiscuous mode [ 73.254972][ T8633] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 73.262555][ T8633] Cannot create hsr debugfs directory [ 73.269613][ T8635] team0: Port device team_slave_1 added [ 73.336719][ T8635] device hsr_slave_0 entered promiscuous mode [ 73.365258][ T8635] device hsr_slave_1 entered promiscuous mode [ 73.414970][ T8635] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 73.415003][ T8635] Cannot create hsr debugfs directory [ 73.457453][ T8627] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 73.512335][ T8624] 8021q: adding VLAN 0 to HW filter on device team0 [ 73.519406][ T8629] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 73.558683][ T8629] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 73.630967][ T8629] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 73.678297][ T8627] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 73.731016][ T8627] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 73.787185][ T8627] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 73.827002][ T2675] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 73.837200][ T2675] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 73.852488][ T8629] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 73.917400][ T2675] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 73.927781][ T2675] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 73.937258][ T2675] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.944304][ T2675] bridge0: port 1(bridge_slave_0) entered forwarding state [ 73.952125][ T2675] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 73.961672][ T2675] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 73.970159][ T2675] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.977254][ T2675] bridge0: port 2(bridge_slave_1) entered forwarding state [ 73.985033][ T2675] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 73.996090][ T2675] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 74.039154][ T2715] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 74.051774][ T2715] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 74.060849][ T2715] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 74.069988][ T2715] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 74.078650][ T2715] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 74.095881][ T3180] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 74.116776][ T3180] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 74.130519][ T3180] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 74.139069][ T3180] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 74.147207][ T3180] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 74.168108][ T8621] device veth0_vlan entered promiscuous mode [ 74.200586][ T3180] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 74.211419][ T3180] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 74.231878][ T8624] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 74.247994][ T8624] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 74.264473][ T8621] device veth1_vlan entered promiscuous mode [ 74.272328][ T8635] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 74.310042][ T8635] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 74.356944][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 74.365531][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 74.373781][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 74.382376][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 74.390863][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 74.399504][ T8633] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 74.457196][ T8633] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 74.499135][ T8633] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 74.538160][ T8633] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 74.605318][ T8635] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 74.677052][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 74.708946][ T8624] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 74.725563][ T8635] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 74.758294][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 74.766937][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 74.824019][ T2675] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 74.834303][ T2675] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 74.866137][ T8627] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.903426][ T8624] device veth0_vlan entered promiscuous mode [ 74.913899][ T8629] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.935911][ T8627] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.951443][ T2715] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 74.964553][ T2715] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 74.993984][ T2715] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 75.002160][ T2715] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 75.011402][ T2715] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 75.019726][ T2715] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 179.974751][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 179.981802][ C0] rcu: 0-...!: (10499 ticks this GP) idle=806/1/0x4000000000000002 softirq=13209/13209 fqs=3 [ 179.992290][ C0] (t=10500 jiffies g=7097 q=114) [ 179.997310][ C0] rcu: rcu_preempt kthread starved for 10494 jiffies! g7097 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 180.008494][ C0] rcu: RCU grace-period kthread stack dump: [ 180.014382][ C0] rcu_preempt R running task 29032 10 2 0x80004000 [ 180.022514][ C0] Call Trace: [ 180.025823][ C0] __schedule+0x9a0/0xcc0 [ 180.030164][ C0] schedule+0x181/0x210 [ 180.034316][ C0] schedule_timeout+0x14f/0x240 [ 180.039159][ C0] ? run_local_timers+0x120/0x120 [ 180.044180][ C0] rcu_gp_kthread+0xed8/0x1770 [ 180.048940][ C0] kthread+0x332/0x350 [ 180.052999][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 180.058128][ C0] ? kthread_blkcg+0xe0/0xe0 [ 180.062729][ C0] ret_from_fork+0x24/0x30 [ 180.067144][ C0] NMI backtrace for cpu 0 [ 180.071462][ C0] CPU: 0 PID: 30 Comm: kworker/u4:2 Not tainted 5.5.0-rc5-syzkaller #0 [ 180.079680][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 180.089813][ C0] Workqueue: 0x0 (bat_events) [ 180.094563][ C0] Call Trace: [ 180.097834][ C0] [ 180.100680][ C0] dump_stack+0x1fb/0x318 [ 180.105005][ C0] nmi_cpu_backtrace+0xaf/0x1a0 [ 180.109844][ C0] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 180.115990][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 180.122046][ C0] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 180.128019][ C0] arch_trigger_cpumask_backtrace+0x10/0x20 [ 180.133897][ C0] rcu_dump_cpu_stacks+0x15a/0x220 [ 180.139114][ C0] rcu_sched_clock_irq+0xe25/0x1ad0 [ 180.144320][ C0] ? trace_hardirqs_off+0x74/0x80 [ 180.149373][ C0] update_process_times+0x12d/0x180 [ 180.154572][ C0] tick_sched_timer+0x263/0x420 [ 180.159417][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 180.164954][ C0] __hrtimer_run_queues+0x403/0x840 [ 180.170156][ C0] hrtimer_interrupt+0x38c/0xda0 [ 180.175099][ C0] ? debug_smp_processor_id+0x9/0x20 [ 180.180376][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 180.185912][ C0] apic_timer_interrupt+0xf/0x20 [ 180.190920][ C0] [ 180.193849][ C0] RIP: 0010:mod_memcg_page_state+0x8/0x190 [ 180.199652][ C0] Code: eb 0c e8 eb 27 2e 00 eb 05 e8 e4 27 2e 00 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 1f 44 00 00 55 48 89 e5 41 57 41 56 <41> 54 53 41 89 f6 48 89 fb e8 ba 27 2e 00 48 83 c3 38 48 89 d8 48 [ 180.219244][ C0] RSP: 0018:ffffc90000e87c10 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 180.227644][ C0] RAX: 1ffff11015250a61 RBX: ffff8880a9285308 RCX: 0000000000000000 [ 180.235620][ C0] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea0002a43180 [ 180.243578][ C0] RBP: ffffc90000e87c20 R08: dffffc0000000000 R09: fffffbfff124248a [ 180.251539][ C0] R10: fffffbfff124248a R11: 0000000000000000 R12: ffff8880a92853a0 [ 180.259511][ C0] R13: dffffc0000000000 R14: 1ffff11015250a74 R15: ffff8880a95135f8 [ 180.267510][ C0] free_thread_stack+0x168/0x590 [ 180.273415][ C0] put_task_stack+0xa3/0x130 [ 180.278021][ C0] finish_task_switch+0x3f1/0x550 [ 180.283045][ C0] __schedule+0x9a8/0xcc0 [ 180.287378][ C0] schedule+0x181/0x210 [ 180.291533][ C0] worker_thread+0x10d6/0x1630 [ 180.296316][ C0] kthread+0x332/0x350 [ 180.300374][ C0] ? rcu_lock_release+0x30/0x30 [ 180.305213][ C0] ? kthread_blkcg+0xe0/0xe0 [ 180.309793][ C0] ret_from_fork+0x24/0x30