[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 43.176360][ T23] audit: type=1800 audit(1575398123.545:25): pid=7994 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 43.220278][ T23] audit: type=1800 audit(1575398123.545:26): pid=7994 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 43.253016][ T23] audit: type=1800 audit(1575398123.545:27): pid=7994 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 '10.128.0.192' (ECDSA) to the list of known hosts. 2019/12/03 18:35:35 fuzzer started 2019/12/03 18:35:37 dialing manager at 10.128.0.26:42111 2019/12/03 18:35:37 syscalls: 2689 2019/12/03 18:35:37 code coverage: enabled 2019/12/03 18:35:37 comparison tracing: enabled 2019/12/03 18:35:37 extra coverage: extra coverage is not supported by the kernel 2019/12/03 18:35:37 setuid sandbox: enabled 2019/12/03 18:35:37 namespace sandbox: enabled 2019/12/03 18:35:37 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 18:35:37 fault injection: enabled 2019/12/03 18:35:37 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 18:35:37 net packet injection: enabled 2019/12/03 18:35:37 net device setup: enabled 2019/12/03 18:35:37 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 18:35:37 devlink PCI setup: PCI device 0000:00:10.0 is not available 18:35:38 executing program 0: r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000000)='/dev/ptmx\x00', 0x0, 0x0) ioctl$TCSETAW(r0, 0x5407, &(0x7f0000000080)={0x0, 0x0, 0xfff7}) 18:35:38 executing program 1: r0 = socket$caif_seqpacket(0x25, 0x5, 0x0) setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, &(0x7f00000000c0)='syz_tun\x00', 0x10) connect$caif(r0, &(0x7f0000000040)=@dbg, 0x18) syzkaller login: [ 58.183055][ T8156] IPVS: ftp: loaded support on port[0] = 21 18:35:38 executing program 2: r0 = socket$inet6(0xa, 0x2, 0x0) bind$inet6(r0, &(0x7f0000000480)={0xa, 0x0, 0x0, @mcast1, 0x2}, 0x1c) r1 = socket$inet6(0xa, 0x3, 0x6b) ioctl(r1, 0x1000008912, &(0x7f0000000000)="0815b5055e0bcfe87b3071") connect$inet6(r0, &(0x7f00000000c0)={0xa, 0x0, 0x0, @dev}, 0x1c) setsockopt$inet6_int(r0, 0x29, 0x31, &(0x7f0000000240), 0x4) [ 58.355028][ T8158] IPVS: ftp: loaded support on port[0] = 21 [ 58.363910][ T8156] chnl_net:caif_netlink_parms(): no params data found [ 58.460905][ T8156] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.468570][ T8156] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.478065][ T8156] device bridge_slave_0 entered promiscuous mode [ 58.512622][ T8156] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.519810][ T8156] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.528797][ T8156] device bridge_slave_1 entered promiscuous mode [ 58.566128][ T8156] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.584050][ T8161] IPVS: ftp: loaded support on port[0] = 21 [ 58.607065][ T8156] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link 18:35:39 executing program 3: r0 = socket$can_bcm(0x1d, 0x2, 0x2) ioctl$ifreq_SIOCGIFINDEX_vcan(r0, 0x8933, &(0x7f00000007c0)={'vcan0\x00', 0x0}) connect(r0, &(0x7f0000000740)=@ll={0x11, 0x0, r1, 0x1, 0x0, 0x6, @link_local}, 0x80) sendmsg$can_bcm(r0, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000000)={0x1, 0x0, 0x0, {0x0, 0x2710}, {0x0, 0x7530}, {}, 0x1, @can={{}, 0x0, 0x0, 0x0, 0x0, "4c3c35f5e65aa0ba"}}, 0x48}}, 0x0) sendmsg$can_bcm(r0, &(0x7f00000008c0)={0x0, 0x0, &(0x7f0000000180)={&(0x7f00000001c0)=ANY=[@ANYBLOB="01000000fdffffff0000000000000000", @ANYRES64=0x0, @ANYRES64=0x0, @ANYRES64=0x0, @ANYRES64=0x0, @ANYBLOB="000000000100000000000000000000004552019de5000dcffea7f8c2b7f6aba403d5c284d3042646cb28816c6055151ca2c1467d0922ae05f2c27d20427db7a98c73166ac193b6214b6b11f97cf565bb8005c1daf48d1ef1a0d0c3ec2ae49d"], 0x80}}, 0x0) sendmsg$can_bcm(r0, &(0x7f00000006c0)={0x0, 0x0, &(0x7f0000000680)={&(0x7f0000000100)={0x3, 0x0, 0x0, {}, {}, {}, 0x1, @can={{}, 0x0, 0x0, 0x0, 0x0, "ab709322d6f32eb4"}}, 0x48}}, 0x0) [ 58.655111][ T8158] chnl_net:caif_netlink_parms(): no params data found [ 58.686422][ T8156] team0: Port device team_slave_0 added [ 58.723167][ T8156] team0: Port device team_slave_1 added [ 58.768918][ T8158] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.779508][ T8158] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.789753][ T8158] device bridge_slave_0 entered promiscuous mode [ 58.822655][ T8158] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.829773][ T8158] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.841384][ T8158] device bridge_slave_1 entered promiscuous mode [ 58.875460][ T8156] device hsr_slave_0 entered promiscuous mode 18:35:39 executing program 4: r0 = socket$inet6_tcp(0xa, 0x1, 0x0) setsockopt$inet6_tcp_int(r0, 0x6, 0x24, &(0x7f0000000080)=0x1, 0x4) recvmmsg(r0, &(0x7f0000000080), 0x21e, 0x0, 0x0) [ 58.960659][ T8156] device hsr_slave_1 entered promiscuous mode [ 59.066419][ T8158] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.137294][ T8168] IPVS: ftp: loaded support on port[0] = 21 [ 59.145611][ T8158] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.162176][ T8166] IPVS: ftp: loaded support on port[0] = 21 18:35:39 executing program 5: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)={0xffffffffffffffff}) r1 = dup(r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) r2 = socket$nl_route(0x10, 0x3, 0x0) r3 = socket(0x100000000011, 0x2, 0x0) bind(r3, &(0x7f0000000140)=@generic={0x11, "0000010000000000080044944eeba71a4976e252922cb18f6e2e2aba000000012e0b3836005404b0e0301a4ce875f2e3ff5f163ee340b7679500800000000000000101013c5811039e15775027ecce66fd792bbf0e5bf5ff1b0816f3f6db1c00010000000000000049740000000000000006ad8e5ecc326d3a09ffc2c654"}, 0x80) getsockname$packet(r3, &(0x7f0000000040)={0x11, 0x0, 0x0}, &(0x7f00000001c0)=0x14) sendmsg$nl_route(r2, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000040)={&(0x7f00000000c0)=@newlink={0x44, 0x10, 0xe3b, 0x0, 0x0, {}, [@IFLA_MASTER={0x8, 0xa, 0x6}, @IFLA_LINKINFO={0x1c, 0x12, @gretap={{0xc, 0x1, 'gretap\x00'}, {0xc, 0x2, [@gre_common_policy=[@IFLA_GRE_LINK={0x8, 0x1, r4}]]}}}]}, 0x44}, 0x1, 0x0, 0x0, 0x4004008}, 0x28804) [ 59.199243][ T8156] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 59.255669][ T8161] chnl_net:caif_netlink_parms(): no params data found [ 59.275083][ T8158] team0: Port device team_slave_0 added [ 59.294067][ T8156] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 59.333188][ T8156] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 59.386014][ T8158] team0: Port device team_slave_1 added [ 59.443529][ T8158] device hsr_slave_0 entered promiscuous mode [ 59.480683][ T8158] device hsr_slave_1 entered promiscuous mode [ 59.540400][ T8158] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.558584][ T8156] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 59.666986][ T8171] IPVS: ftp: loaded support on port[0] = 21 [ 59.691561][ T8161] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.698649][ T8161] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.707397][ T8161] device bridge_slave_0 entered promiscuous mode [ 59.717624][ T8161] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.725210][ T8161] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.733181][ T8161] device bridge_slave_1 entered promiscuous mode [ 59.769351][ T8161] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.784575][ T8161] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.806305][ T8161] team0: Port device team_slave_0 added [ 59.836302][ T8161] team0: Port device team_slave_1 added [ 59.846113][ T8156] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.898780][ T8156] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.923535][ T8158] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 59.993799][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.003055][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.063005][ T8161] device hsr_slave_0 entered promiscuous mode [ 60.101426][ T8161] device hsr_slave_1 entered promiscuous mode [ 60.160340][ T8161] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.170330][ T8166] chnl_net:caif_netlink_parms(): no params data found [ 60.178982][ T8158] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 60.242463][ T8158] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 60.293224][ T8158] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 60.346790][ T8164] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 60.356116][ T8164] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.364751][ T8164] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.372010][ T8164] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.381412][ T8164] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 60.422826][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 60.433566][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.442740][ T48] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.449927][ T48] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.457561][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 60.499468][ T8168] chnl_net:caif_netlink_parms(): no params data found [ 60.536056][ T8166] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.543988][ T8166] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.552455][ T8166] device bridge_slave_0 entered promiscuous mode [ 60.564576][ T8166] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.572251][ T8166] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.579964][ T8166] device bridge_slave_1 entered promiscuous mode [ 60.587132][ T3107] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 60.625439][ T8164] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 60.634805][ T8164] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 60.644490][ T8164] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 60.653267][ T8164] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 60.662455][ T8164] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 60.671395][ T8164] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 60.680028][ T8164] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 60.693331][ T8161] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 60.758654][ T8156] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 60.772413][ T8156] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 60.785634][ T8171] chnl_net:caif_netlink_parms(): no params data found [ 60.794677][ T8161] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 60.852752][ T8166] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.868012][ T8166] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.878574][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 60.887768][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 60.905610][ T8161] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 60.963427][ T8161] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 61.024018][ T8168] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.031462][ T8168] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.039341][ T8168] device bridge_slave_0 entered promiscuous mode [ 61.072756][ T8166] team0: Port device team_slave_0 added [ 61.079253][ T8168] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.087133][ T8168] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.095372][ T8168] device bridge_slave_1 entered promiscuous mode [ 61.116892][ T8165] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 61.124624][ T8165] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 61.134423][ T8166] team0: Port device team_slave_1 added [ 61.142561][ T8156] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 61.161779][ T8171] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.168884][ T8171] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.177172][ T8171] device bridge_slave_0 entered promiscuous mode [ 61.185829][ T8171] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.192988][ T8171] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.201006][ T8171] device bridge_slave_1 entered promiscuous mode [ 61.231975][ T8168] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.247491][ T8168] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.270140][ T8171] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.281647][ T8158] 8021q: adding VLAN 0 to HW filter on device bond0 [ 166.350191][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 166.357226][ C0] (detected by 0, t=10502 jiffies, g=6229, q=101) [ 166.363734][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294953771-4294943268), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 166.377083][ C0] rcu_preempt R running task 29032 10 2 0x80004008 [ 166.384981][ C0] Call Trace: [ 166.388259][ C0] [ 166.391144][ C0] sched_show_task+0x40f/0x560 [ 166.395912][ C0] rcu_sched_clock_irq+0x1861/0x1ad0 [ 166.401281][ C0] update_process_times+0x12d/0x180 [ 166.406469][ C0] tick_sched_timer+0x263/0x420 [ 166.411324][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 166.416864][ C0] __hrtimer_run_queues+0x403/0x840 [ 166.422069][ C0] hrtimer_interrupt+0x38c/0xda0 [ 166.427012][ C0] ? debug_smp_processor_id+0x9/0x20 [ 166.432314][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 166.437851][ C0] apic_timer_interrupt+0xf/0x20 [ 166.442772][ C0] [ 166.445705][ C0] RIP: 0010:free_thread_stack+0x133/0x590 [ 166.451859][ C0] Code: 00 ea ff ff 48 01 c7 be 03 00 00 00 e8 06 a2 60 00 e9 5d 04 00 00 e8 5c 2d 2e 00 48 89 df 31 f6 e8 42 af 6e 00 43 80 3c 2e 00 <74> 08 4c 89 e7 e8 43 a4 69 00 49 8b 1c 24 48 83 c3 08 48 89 d8 48 [ 166.471471][ C0] RSP: 0018:ffffc90000d0fc48 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 166.479883][ C0] RAX: 0000000000000001 RBX: ffffea000234ab80 RCX: 0000000000000000 [ 166.487861][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea000234ab80 [ 166.495820][ C0] RBP: ffffc90000d0fc80 R08: dffffc0000000000 R09: fffffbfff120248a [ 166.503781][ C0] R10: fffffbfff120248a R11: 0000000000000000 R12: ffff888093914ca0 [ 166.511744][ C0] R13: dffffc0000000000 R14: 1ffff11012722994 R15: ffff88809f0573e8 [ 166.519728][ C0] ? free_thread_stack+0x12e/0x590 [ 166.524835][ C0] put_task_stack+0xa3/0x130 [ 166.529416][ C0] finish_task_switch+0x3f1/0x550 [ 166.534786][ C0] __schedule+0x9a8/0xcc0 [ 166.539129][ C0] schedule+0x181/0x210 [ 166.543392][ C0] schedule_timeout+0x14f/0x240 [ 166.548230][ C0] ? run_local_timers+0x120/0x120 [ 166.553734][ C0] rcu_gp_kthread+0xed8/0x1770 [ 166.558495][ C0] kthread+0x332/0x350 [ 166.562551][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 166.567654][ C0] ? kthread_blkcg+0xe0/0xe0 [ 166.572241][ C0] ret_from_fork+0x24/0x30 [ 166.576723][ C0] rcu: rcu_preempt kthread starved for 10524 jiffies! g6229 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 166.588350][ C0] rcu: RCU grace-period kthread stack dump: [ 166.594229][ C0] rcu_preempt R running task 29032 10 2 0x80004008 [ 166.602205][ C0] Call Trace: [ 166.605476][ C0] [ 166.608405][ C0] sched_show_task+0x40f/0x560 [ 166.613167][ C0] rcu_check_gp_kthread_starvation+0x170/0x1b0 [ 166.619314][ C0] rcu_sched_clock_irq+0x17d3/0x1ad0 [ 166.624599][ C0] update_process_times+0x12d/0x180 [ 166.629807][ C0] tick_sched_timer+0x263/0x420 [ 166.634658][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 166.640203][ C0] __hrtimer_run_queues+0x403/0x840 [ 166.645409][ C0] hrtimer_interrupt+0x38c/0xda0 [ 166.650358][ C0] ? debug_smp_processor_id+0x9/0x20 [ 166.656112][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 166.661651][ C0] apic_timer_interrupt+0xf/0x20 [ 166.666572][ C0] [ 166.669527][ C0] RIP: 0010:free_thread_stack+0x133/0x590 [ 166.675254][ C0] Code: 00 ea ff ff 48 01 c7 be 03 00 00 00 e8 06 a2 60 00 e9 5d 04 00 00 e8 5c 2d 2e 00 48 89 df 31 f6 e8 42 af 6e 00 43 80 3c 2e 00 <74> 08 4c 89 e7 e8 43 a4 69 00 49 8b 1c 24 48 83 c3 08 48 89 d8 48 [ 166.695973][ C0] RSP: 0018:ffffc90000d0fc48 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 166.704376][ C0] RAX: 0000000000000001 RBX: ffffea000234ab80 RCX: 0000000000000000 [ 166.712343][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea000234ab80 [ 166.720321][ C0] RBP: ffffc90000d0fc80 R08: dffffc0000000000 R09: fffffbfff120248a [ 166.728297][ C0] R10: fffffbfff120248a R11: 0000000000000000 R12: ffff888093914ca0 [ 166.736524][ C0] R13: dffffc0000000000 R14: 1ffff11012722994 R15: ffff88809f0573e8 [ 166.745148][ C0] ? free_thread_stack+0x12e/0x590 [ 166.750344][ C0] put_task_stack+0xa3/0x130 [ 166.754924][ C0] finish_task_switch+0x3f1/0x550 [ 166.759939][ C0] __schedule+0x9a8/0xcc0 [ 166.764278][ C0] schedule+0x181/0x210 [ 166.768423][ C0] schedule_timeout+0x14f/0x240 [ 166.773262][ C0] ? run_local_timers+0x120/0x120 [ 166.778304][ C0] rcu_gp_kthread+0xed8/0x1770 [ 166.783076][ C0] kthread+0x332/0x350 [ 166.787223][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 166.792349][ C0] ? kthread_blkcg+0xe0/0xe0 [ 166.796930][ C0] ret_from_fork+0x24/0x30