[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 44.004539][ T25] audit: type=1800 audit(1575425721.557:25): pid=8129 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 44.032836][ T25] audit: type=1800 audit(1575425721.557:26): pid=8129 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 44.083619][ T25] audit: type=1800 audit(1575425721.557:27): pid=8129 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 '10.128.1.20' (ECDSA) to the list of known hosts. 2019/12/04 02:15:31 fuzzer started 2019/12/04 02:15:33 dialing manager at 10.128.0.26:42111 2019/12/04 02:15:33 syscalls: 2689 2019/12/04 02:15:33 code coverage: enabled 2019/12/04 02:15:33 comparison tracing: enabled 2019/12/04 02:15:33 extra coverage: extra coverage is not supported by the kernel 2019/12/04 02:15:33 setuid sandbox: enabled 2019/12/04 02:15:33 namespace sandbox: enabled 2019/12/04 02:15:33 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/04 02:15:33 fault injection: enabled 2019/12/04 02:15:33 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/04 02:15:33 net packet injection: enabled 2019/12/04 02:15:33 net device setup: enabled 2019/12/04 02:15:33 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/04 02:15:33 devlink PCI setup: PCI device 0000:00:10.0 is not available 02:15:34 executing program 0: openat$kvm(0xffffffffffffff9c, &(0x7f0000000080)='/dev/kvm\x00', 0x0, 0x0) r0 = openat$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$KVM_RUN(r2, 0xae80, 0x0) 02:15:34 executing program 1: r0 = syz_open_procfs(0x0, &(0x7f0000000080)='net/anycast6\x00') lseek(r0, 0x203ffffd, 0x0) syzkaller login: [ 57.240973][ T8291] IPVS: ftp: loaded support on port[0] = 21 [ 57.388821][ T8291] chnl_net:caif_netlink_parms(): no params data found [ 57.426388][ T8291] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.443015][ T8291] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.451183][ T8291] device bridge_slave_0 entered promiscuous mode [ 57.464412][ T8291] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.473185][ T8291] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.473912][ T8294] IPVS: ftp: loaded support on port[0] = 21 02:15:35 executing program 2: bpf$PROG_LOAD(0x5, &(0x7f000000d000)={0xa, 0x3, &(0x7f0000008000)=@framed={{0xffffff85, 0x0, 0x0, 0x0, 0x8, 0x7}}, &(0x7f0000014ff5)='syzka\x00\x00\x00\x05\x00\xf3', 0x2, 0x1000, &(0x7f0000014000)=""/4096}, 0x48) [ 57.504542][ T8291] device bridge_slave_1 entered promiscuous mode [ 57.548300][ T8291] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.571775][ T8291] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.629537][ T8291] team0: Port device team_slave_0 added [ 57.637209][ T8291] team0: Port device team_slave_1 added [ 57.670700][ T8294] chnl_net:caif_netlink_parms(): no params data found 02:15:35 executing program 3: r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000180)='/dev/ptmx\x00', 0x0, 0x0) ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000140)=0x3) ioctl$TIOCSSOFTCAR(r0, 0x5406, 0x0) [ 57.744969][ T8291] device hsr_slave_0 entered promiscuous mode [ 57.782978][ T8291] device hsr_slave_1 entered promiscuous mode [ 57.866537][ T8297] IPVS: ftp: loaded support on port[0] = 21 [ 57.945728][ T8294] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.953381][ T8294] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.961307][ T8294] device bridge_slave_0 entered promiscuous mode [ 57.972271][ T8291] netdevsim netdevsim0 netdevsim0: renamed from eth0 02:15:35 executing program 4: r0 = socket$inet6_tcp(0xa, 0x1, 0x0) setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f00000000c0)=0x100000001, 0x1d4) connect$inet6(r0, &(0x7f0000000080), 0x1c) setsockopt$inet6_tcp_TCP_ULP(r0, 0x6, 0x1f, &(0x7f00000001c0)='tls\x00', 0x4) setsockopt$inet6_tcp_TLS_TX(r0, 0x11a, 0x1, &(0x7f0000000040)=@gcm_256={{0x304}, "215e23b6a14a937e", "df28196f6317ffbc13846cbe59f4f1b8c255c35c6b898da733494d6ae33cbdfb", "7b45bfdf", "1215ddea89823d54"}, 0x38) sendmsg(r0, &(0x7f0000001880)={0x0, 0x0, 0x0, 0x0, &(0x7f0000000500)=[{0x10}, {0xf}], 0x20}, 0x0) [ 58.070255][ T8294] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.094540][ T8294] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.102516][ T8294] device bridge_slave_1 entered promiscuous mode [ 58.124823][ T8291] netdevsim netdevsim0 netdevsim1: renamed from eth1 02:15:35 executing program 5: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = dup(r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) bpf$MAP_CREATE(0x0, &(0x7f00000000c0)={0x2, 0x4, 0x200000004, 0x400, 0x0, 0xffffffffffffffff, 0x0, [0x2e, 0x2e, 0x2e, 0x5f, 0x6b6e, 0x5f, 0x2e, 0x5f]}, 0x3c) [ 58.201459][ T8294] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.202576][ T8299] IPVS: ftp: loaded support on port[0] = 21 [ 58.221333][ T8291] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 58.285743][ T8291] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 58.358993][ T8294] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.390906][ T8303] IPVS: ftp: loaded support on port[0] = 21 [ 58.391186][ T8301] IPVS: ftp: loaded support on port[0] = 21 [ 58.411461][ T8294] team0: Port device team_slave_0 added [ 58.422077][ T8294] team0: Port device team_slave_1 added [ 58.441324][ T8291] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.448665][ T8291] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.456501][ T8291] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.463858][ T8291] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.491260][ T3790] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.499518][ T3790] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.604540][ T8294] device hsr_slave_0 entered promiscuous mode [ 58.673330][ T8294] device hsr_slave_1 entered promiscuous mode [ 58.713882][ T8294] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.796331][ T8297] chnl_net:caif_netlink_parms(): no params data found [ 58.824715][ T8294] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 58.874890][ T8294] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 58.916008][ T8294] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 58.967903][ T8294] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 59.082059][ T8303] chnl_net:caif_netlink_parms(): no params data found [ 59.151380][ T8297] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.158706][ T8297] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.166483][ T8297] device bridge_slave_0 entered promiscuous mode [ 59.174577][ T8299] chnl_net:caif_netlink_parms(): no params data found [ 59.204722][ T8297] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.212210][ T8297] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.220665][ T8297] device bridge_slave_1 entered promiscuous mode [ 59.249678][ T8303] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.257659][ T8303] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.267472][ T8303] device bridge_slave_0 entered promiscuous mode [ 59.276890][ T8291] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.298157][ T8303] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.306100][ T8303] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.314243][ T8303] device bridge_slave_1 entered promiscuous mode [ 59.321269][ T8301] chnl_net:caif_netlink_parms(): no params data found [ 59.343354][ T8297] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.354423][ T8297] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.379927][ T8299] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.387807][ T8299] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.396376][ T8299] device bridge_slave_0 entered promiscuous mode [ 59.421660][ T8297] team0: Port device team_slave_0 added [ 59.435652][ T8299] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.444010][ T8299] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.451680][ T8299] device bridge_slave_1 entered promiscuous mode [ 59.468138][ T3790] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 59.477819][ T3790] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.488694][ T8303] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.506657][ T8294] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.515104][ T8297] team0: Port device team_slave_1 added [ 59.531890][ T8291] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.541826][ T8303] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.570360][ T8299] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.590028][ T8303] team0: Port device team_slave_0 added [ 59.597958][ T8299] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.621010][ T8301] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.629235][ T8301] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.637750][ T8301] device bridge_slave_0 entered promiscuous mode [ 59.647607][ T8303] team0: Port device team_slave_1 added [ 59.659572][ T3781] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 59.668743][ T3781] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.677301][ T3781] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.684421][ T3781] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.705081][ T8294] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.713411][ T8301] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.720539][ T8301] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.729041][ T8301] device bridge_slave_1 entered promiscuous mode [ 59.742929][ T8299] team0: Port device team_slave_0 added [ 59.750221][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 59.759047][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.768013][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.775164][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.783642][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 59.791249][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.799048][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 59.844507][ T8297] device hsr_slave_0 entered promiscuous mode [ 59.883028][ T8297] device hsr_slave_1 entered promiscuous mode [ 59.933121][ T8297] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.946929][ T8299] team0: Port device team_slave_1 added [ 59.975715][ T3030] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 59.984940][ T3030] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 59.993734][ T3030] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 60.002155][ T3030] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 60.010763][ T3030] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 60.021169][ T3030] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 60.028985][ T3030] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 60.037840][ T3030] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.046394][ T3030] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.053487][ T3030] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.065566][ T8309] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 60.075192][ T8301] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.086930][ T8301] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.104889][ T3030] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 60.113396][ T3030] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 60.155456][ T8303] device hsr_slave_0 entered promiscuous mode [ 60.203215][ T8303] device hsr_slave_1 entered promiscuous mode [ 60.242814][ T8303] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.274018][ T8291] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 60.291857][ T8291] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 60.365408][ T8299] device hsr_slave_0 entered promiscuous mode [ 60.413052][ T8299] device hsr_slave_1 entered promiscuous mode [ 60.452977][ T8299] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.467634][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 60.476318][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.484976][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.492083][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.499758][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 60.508577][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 60.520148][ T8297] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 60.580158][ T8301] team0: Port device team_slave_0 added [ 60.589328][ T3030] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 60.600057][ T8297] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 60.629457][ T8297] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 60.682310][ T8291] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 60.692828][ T8301] team0: Port device team_slave_1 added [ 60.703994][ T8303] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 60.739034][ T8303] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 60.794132][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 60.801619][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 60.809135][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 60.817610][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 60.826538][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 60.835408][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 60.844600][ T8297] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 60.926770][ T8303] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 60.975481][ T8303] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 61.025333][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 61.034067][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.042334][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 61.050996][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 61.064861][ T8299] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 61.124893][ T8299] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 166.152620][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 166.159749][ C0] rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P8291 [ 166.167215][ C0] (detected by 0, t=10503 jiffies, g=6389, q=209) [ 166.173791][ C0] syz-executor.0 R running task 24440 8291 8290 0x0000400a [ 166.181793][ C0] Call Trace: [ 166.185067][ C0] [ 166.187927][ C0] sched_show_task+0x40f/0x560 [ 166.192690][ C0] rcu_sched_clock_irq+0x16b1/0x1ad0 [ 166.197976][ C0] update_process_times+0x12d/0x180 [ 166.203278][ C0] tick_sched_timer+0x263/0x420 [ 166.208208][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 166.213768][ C0] __hrtimer_run_queues+0x403/0x840 [ 166.218973][ C0] hrtimer_interrupt+0x38c/0xda0 [ 166.223951][ C0] ? debug_smp_processor_id+0x9/0x20 [ 166.229235][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 166.234779][ C0] apic_timer_interrupt+0xf/0x20 [ 166.239711][ C0] [ 166.242733][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x14/0x50 [ 166.248969][ C0] Code: 00 00 00 48 8b 3d 74 25 cd 07 48 89 de e8 64 02 3b 00 5b 5d c3 cc 48 8b 04 24 65 48 8b 0c 25 c0 1d 02 00 65 8b 15 b8 81 8b 7e c2 00 01 1f 00 75 2c 8b 91 80 13 00 00 83 fa 02 75 21 48 8b 91 [ 166.268744][ C0] RSP: 0018:ffffc90001ef7928 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 166.277166][ C0] RAX: ffffffff81486ea4 RBX: ffffea00026cd840 RCX: ffff8880a3dd8340 [ 166.285142][ C0] RDX: 0000000000000001 RSI: 00000000fffffffc RDI: ffffea00026cd840 [ 166.293106][ C0] RBP: ffffc90001ef7968 R08: dffffc0000000000 R09: fffffbfff120248a [ 166.301181][ C0] R10: fffffbfff120248a R11: 0000000000000000 R12: ffff888090b7bea0 [ 166.309146][ C0] R13: dffffc0000000000 R14: 1ffff1101216f7d4 R15: ffff888095a31928 [ 166.317126][ C0] ? free_thread_stack+0x124/0x590 [ 166.322244][ C0] ? free_thread_stack+0x124/0x590 [ 166.327345][ C0] put_task_stack+0xa3/0x130 [ 166.332023][ C0] finish_task_switch+0x3f1/0x550 [ 166.337221][ C0] __schedule+0x9a8/0xcc0 [ 166.341557][ C0] ? ___preempt_schedule_notrace+0x16/0x27 [ 166.347373][ C0] preempt_schedule_notrace+0xdb/0x120 [ 166.352837][ C0] ___preempt_schedule_notrace+0x16/0x27 [ 166.358480][ C0] ? rcu_is_watching+0x57/0xa0 [ 166.363247][ C0] rcu_is_watching+0x82/0xa0 [ 166.367830][ C0] memcg_kmem_get_cache+0x301/0x590 [ 166.373465][ C0] ? __should_failslab+0x11a/0x160 [ 166.378570][ C0] kmem_cache_alloc_node+0x94/0x280 [ 166.383758][ C0] ? dup_task_struct+0x55/0x910 [ 166.388601][ C0] dup_task_struct+0x55/0x910 [ 166.393274][ C0] copy_process+0x4c5/0x5510 [ 166.398061][ C0] ? __might_fault+0xf9/0x160 [ 166.402919][ C0] _do_fork+0x13e/0x660 [ 166.407067][ C0] ? check_preemption_disabled+0xb4/0x260 [ 166.412774][ C0] ? debug_smp_processor_id+0x9/0x20 [ 166.418052][ C0] ? debug_smp_processor_id+0x1c/0x20 [ 166.423424][ C0] __x64_sys_clone+0x20b/0x250 [ 166.428224][ C0] do_syscall_64+0xf7/0x1c0 [ 166.432832][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 166.438924][ C0] RIP: 0033:0x458c4a [ 166.442988][ C0] Code: f7 d8 64 89 04 25 d4 02 00 00 64 4c 8b 0c 25 10 00 00 00 31 d2 4d 8d 91 d0 02 00 00 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 f5 00 00 00 85 c0 41 89 c5 0f 85 fc 00 00 [ 166.463150][ C0] RSP: 002b:00007ffd26a74a80 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 [ 166.471601][ C0] RAX: ffffffffffffffda RBX: 00007ffd26a74a80 RCX: 0000000000458c4a [ 166.479922][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 [ 166.488158][ C0] RBP: 00007ffd26a74ac0 R08: 0000000000000001 R09: 000000000180e940 [ 166.496122][ C0] R10: 000000000180ec10 R11: 0000000000000246 R12: 0000000000000001 [ 166.504103][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffd26a74b10 [ 166.512180][ C0] rcu: rcu_preempt kthread starved for 4925 jiffies! g6389 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 166.523190][ C0] rcu: RCU grace-period kthread stack dump: [ 166.529556][ C0] rcu_preempt R running task 29032 10 2 0x80004000 [ 166.537633][ C0] Call Trace: [ 166.540925][ C0] __schedule+0x9a0/0xcc0 [ 166.545286][ C0] schedule+0x181/0x210 [ 166.549438][ C0] schedule_timeout+0x14f/0x240 [ 166.554308][ C0] ? run_local_timers+0x120/0x120 [ 166.559416][ C0] rcu_gp_kthread+0xed8/0x1770 [ 166.564271][ C0] kthread+0x332/0x350 [ 166.568333][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 166.573455][ C0] ? kthread_blkcg+0xe0/0xe0 [ 166.578048][ C0] ret_from_fork+0x24/0x30