[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 45.896659][ T25] audit: type=1800 audit(1575439912.740:25): pid=8210 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 45.916160][ T25] audit: type=1800 audit(1575439912.740:26): pid=8210 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 45.966060][ T25] audit: type=1800 audit(1575439912.750:27): pid=8210 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 '10.128.0.154' (ECDSA) to the list of known hosts. 2019/12/04 06:12:03 fuzzer started 2019/12/04 06:12:05 dialing manager at 10.128.0.26:42111 2019/12/04 06:12:05 syscalls: 2689 2019/12/04 06:12:05 code coverage: enabled 2019/12/04 06:12:05 comparison tracing: enabled 2019/12/04 06:12:05 extra coverage: extra coverage is not supported by the kernel 2019/12/04 06:12:05 setuid sandbox: enabled 2019/12/04 06:12:05 namespace sandbox: enabled 2019/12/04 06:12:05 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/04 06:12:05 fault injection: enabled 2019/12/04 06:12:05 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/04 06:12:05 net packet injection: enabled 2019/12/04 06:12:05 net device setup: enabled 2019/12/04 06:12:05 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/04 06:12:05 devlink PCI setup: PCI device 0000:00:10.0 is not available 06:12:06 executing program 0: pipe(&(0x7f00000003c0)={0xffffffffffffffff, 0xffffffffffffffff}) r2 = socket$inet_udp(0x2, 0x2, 0x0) close(r2) socket$nl_xfrm(0x10, 0x3, 0x6) r3 = socket$inet_udplite(0x2, 0x2, 0x88) ioctl(r3, 0x1000008912, &(0x7f00000000c0)="0800a1695e1dcfe87b1071") sendmsg$nl_xfrm(0xffffffffffffffff, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000140)=@updsa={0x104, 0x1a, 0x205, 0x0, 0x0, {{@in6=@mcast1, @in=@remote}, {@in6=@mcast2, 0x0, 0x2b}, @in=@multicast1, {}, {}, {}, 0x0, 0x0, 0x2, 0x2}, [@coaddr={0x14, 0xe, @in=@remote}]}, 0x104}}, 0x0) write$binfmt_misc(r1, &(0x7f0000000140)=ANY=[], 0xffc1) splice(r0, 0x0, r2, 0x0, 0x4ffe0, 0x0) 06:12:06 executing program 1: r0 = openat$ipvs(0xffffffffffffff9c, &(0x7f0000000280)='/proc/sys/net/ipv4/vs/sync_ports\x00', 0x2, 0x0) write$cgroup_pid(r0, 0x0, 0x258) syzkaller login: [ 59.574609][ T8374] IPVS: ftp: loaded support on port[0] = 21 06:12:06 executing program 2: sendmmsg$inet(0xffffffffffffffff, &(0x7f0000002bc0)=[{{&(0x7f0000000000)={0x2, 0x0, @remote}, 0x10, 0x0}}], 0x1, 0x0) r0 = syz_open_procfs(0x0, &(0x7f0000000240)='net/icmp6\x00') preadv(r0, &(0x7f00000017c0), 0x199, 0x0) [ 59.729830][ T8376] IPVS: ftp: loaded support on port[0] = 21 [ 59.786245][ T8374] chnl_net:caif_netlink_parms(): no params data found [ 59.925436][ T8374] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.942402][ T8374] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.950130][ T8374] device bridge_slave_0 entered promiscuous mode [ 59.988487][ T8376] chnl_net:caif_netlink_parms(): no params data found [ 59.998579][ T8374] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.006702][ T8374] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.014705][ T8374] device bridge_slave_1 entered promiscuous mode 06:12:06 executing program 3: io_setup(0x2, &(0x7f0000000740)=0x0) r1 = socket(0xa, 0x806, 0x0) connect$inet6(r1, &(0x7f0000000000)={0xa, 0x0, 0x0, @loopback}, 0x1c) io_submit(r0, 0x1, &(0x7f0000000600)=[&(0x7f0000000100)={0x0, 0x0, 0x0, 0x8, 0x0, r1, 0x0}]) connect$inet6(r1, &(0x7f0000000040)={0xa, 0x0, 0x0, @rand_addr="0aad2826967ce8030ecb8bf8e8db1108"}, 0x1c) [ 60.036155][ T8380] IPVS: ftp: loaded support on port[0] = 21 [ 60.055682][ T8374] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.076756][ T8374] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.095379][ T8376] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.102992][ T8376] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.111370][ T8376] device bridge_slave_0 entered promiscuous mode [ 60.128924][ T8376] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.136863][ T8376] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.145229][ T8376] device bridge_slave_1 entered promiscuous mode [ 60.185112][ T8374] team0: Port device team_slave_0 added [ 60.198135][ T8376] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.214606][ T8376] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.225134][ T8374] team0: Port device team_slave_1 added [ 60.266035][ T8376] team0: Port device team_slave_0 added [ 60.303209][ T8376] team0: Port device team_slave_1 added 06:12:07 executing program 4: seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x2, 0x2, 0x0) [ 60.375554][ T8374] device hsr_slave_0 entered promiscuous mode [ 60.484139][ T8374] device hsr_slave_1 entered promiscuous mode 06:12:07 executing program 5: r0 = socket$kcm(0x2b, 0x1, 0x0) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = socket(0x10, 0x2, 0x0) sendto(r1, &(0x7f0000000200)="120000001200e7ef007b1a3fcd00000000a1", 0x12, 0x0, 0x0, 0x0) recvmmsg(r1, &(0x7f00000037c0)=[{{&(0x7f00000004c0)=@ethernet={0x0, @random}, 0x80, &(0x7f0000000380)=[{&(0x7f0000000040)=""/95, 0x9}, {&(0x7f00000000c0)=""/85, 0x4e4}, {&(0x7f00000024c0)=""/4096, 0x1034}, {&(0x7f0000000400)=""/120, 0x78}, {&(0x7f0000000480)=""/60, 0xc6}, {&(0x7f0000000280)=""/77, 0x480}, {&(0x7f0000000540)=""/154, 0x9a}, {&(0x7f0000000340)=""/22, 0x1de}], 0x3a4, &(0x7f0000002400)=""/191, 0x1f9}}], 0x4000000000001de, 0x6, &(0x7f0000003700)={0x77359400}) [ 60.626279][ T8376] device hsr_slave_0 entered promiscuous mode [ 60.682656][ T8376] device hsr_slave_1 entered promiscuous mode [ 60.732236][ T8376] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.768247][ T8387] IPVS: ftp: loaded support on port[0] = 21 [ 60.778730][ T8385] IPVS: ftp: loaded support on port[0] = 21 [ 60.806989][ T8383] IPVS: ftp: loaded support on port[0] = 21 [ 60.829262][ T8380] chnl_net:caif_netlink_parms(): no params data found [ 60.910526][ T8376] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 60.976437][ T8376] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 61.042531][ T8374] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 61.078409][ T8374] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 61.134018][ T8376] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 61.174261][ T8376] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 61.226510][ T8374] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 61.276358][ T8374] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 61.340064][ T8380] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.348548][ T8380] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.357242][ T8380] device bridge_slave_0 entered promiscuous mode [ 61.368577][ T8380] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.375876][ T8380] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.384058][ T8380] device bridge_slave_1 entered promiscuous mode [ 61.463222][ T8385] chnl_net:caif_netlink_parms(): no params data found [ 61.510153][ T8380] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.523350][ T8380] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.552369][ T8380] team0: Port device team_slave_0 added [ 61.560032][ T8380] team0: Port device team_slave_1 added [ 61.597412][ T8383] chnl_net:caif_netlink_parms(): no params data found [ 61.664155][ T8380] device hsr_slave_0 entered promiscuous mode [ 61.712421][ T8380] device hsr_slave_1 entered promiscuous mode [ 61.752117][ T8380] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.760706][ T8385] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.768452][ T8385] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.778645][ T8385] device bridge_slave_0 entered promiscuous mode [ 61.787104][ T8385] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.794369][ T8385] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.802634][ T8385] device bridge_slave_1 entered promiscuous mode [ 61.844297][ T8376] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.883502][ T8383] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.890678][ T8383] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.900499][ T8383] device bridge_slave_0 entered promiscuous mode [ 61.910779][ T8383] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.918418][ T8383] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.926614][ T8383] device bridge_slave_1 entered promiscuous mode [ 61.946415][ T8385] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.958345][ T8387] chnl_net:caif_netlink_parms(): no params data found [ 61.980054][ T8380] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 62.036250][ T3052] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 62.044987][ T3052] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 62.055869][ T8385] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.083819][ T8383] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.095157][ T8380] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 62.145531][ T8376] 8021q: adding VLAN 0 to HW filter on device team0 [ 62.168129][ T8383] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.178183][ T8380] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 62.230792][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 62.242673][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 62.254851][ T43] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.262036][ T43] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.271369][ T3052] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 62.284238][ T8385] team0: Port device team_slave_0 added [ 62.310270][ T8383] team0: Port device team_slave_0 added [ 62.317999][ T8380] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 62.364532][ T8385] team0: Port device team_slave_1 added [ 62.374986][ T8387] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.383349][ T8387] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.391137][ T8387] device bridge_slave_0 entered promiscuous mode [ 62.399890][ T8383] team0: Port device team_slave_1 added [ 62.411422][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 62.420724][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.429333][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.436416][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.445253][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 62.454280][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 62.464310][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 62.474111][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 62.483426][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 62.491868][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 62.501473][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 62.521512][ T2727] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 62.530949][ T2727] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 62.540619][ T8387] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.548095][ T8387] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.559090][ T8387] device bridge_slave_1 entered promiscuous mode [ 62.585265][ T8374] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.645658][ T8385] device hsr_slave_0 entered promiscuous mode [ 62.672287][ T8385] device hsr_slave_1 entered promiscuous mode [ 62.722165][ T8385] debugfs: Directory 'hsr0' with parent '/' already present! [ 62.744032][ T8376] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 62.757364][ T8376] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 62.769742][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 62.778472][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 62.800784][ T8387] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.816272][ T8387] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.875908][ T8383] device hsr_slave_0 entered promiscuous mode [ 62.923012][ T8383] device hsr_slave_1 entered promiscuous mode [ 62.962122][ T8383] debugfs: Directory 'hsr0' with parent '/' already present! [ 62.975045][ T8374] 8021q: adding VLAN 0 to HW filter on device team0 [ 62.986439][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 62.994723][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 63.003316][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 63.012456][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 63.061205][ T8385] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 63.105796][ T8387] team0: Port device team_slave_0 added [ 63.120176][ T8380] 8021q: adding VLAN 0 to HW filter on device bond0 [ 63.133291][ T8385] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 63.175955][ T8387] team0: Port device team_slave_1 added [ 63.186721][ T8376] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 63.197574][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 63.211750][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.220632][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.231575][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.250451][ T8385] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 63.303631][ T8385] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 63.354230][ T8392] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 63.368887][ T8392] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 63.377792][ T8392] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 63.388514][ T8392] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.396390][ T8392] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.404479][ T8383] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 63.457801][ T8383] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 63.554794][ T8387] device hsr_slave_0 entered promiscuous mode [ 63.592455][ T8387] device hsr_slave_1 entered promiscuous mode [ 63.642525][ T8387] debugfs: Directory 'hsr0' with parent '/' already present! [ 63.662537][ T3052] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 63.681259][ T3052] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 63.701116][ T3052] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 168.711886][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 168.718996][ C1] (detected by 1, t=10502 jiffies, g=6705, q=79) [ 168.725847][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294953972-4294943469), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 168.739204][ C1] kworker/1:2 R running task 26672 3052 2 0x80004008 [ 168.747221][ C1] Workqueue: events linkwatch_event [ 168.752416][ C1] Call Trace: [ 168.755786][ C1] [ 168.758631][ C1] sched_show_task+0x40f/0x560 [ 168.763973][ C1] rcu_sched_clock_irq+0x1861/0x1ad0 [ 168.769271][ C1] update_process_times+0x12d/0x180 [ 168.774462][ C1] tick_sched_timer+0x263/0x420 [ 168.779305][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 168.784853][ C1] __hrtimer_run_queues+0x403/0x840 [ 168.790054][ C1] hrtimer_interrupt+0x38c/0xda0 [ 168.795103][ C1] ? debug_smp_processor_id+0x9/0x20 [ 168.800842][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 168.806392][ C1] apic_timer_interrupt+0xf/0x20 [ 168.811329][ C1] [ 168.814277][ C1] RIP: 0010:free_thread_stack+0x18b/0x590 [ 168.820331][ C1] Code: ff ff e8 28 04 00 00 43 80 3c 2e 00 74 08 4c 89 e7 e8 09 a4 69 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 eb a3 69 00 48 8b 1b e9 82 ff ff ff e8 de 2c 2e [ 168.839950][ C1] RSP: 0018:ffffc90008547700 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 168.848361][ C1] RAX: 1ffff110144d14c1 RBX: ffff8880a268a608 RCX: ffff88809ef72080 [ 168.856842][ C1] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea00029aa980 [ 168.865946][ C1] RBP: ffffc90008547738 R08: 000000000003a768 R09: ffffed101492a687 [ 168.875766][ C1] R10: ffffed101492a687 R11: 0000000000000000 R12: ffff8880a268a6a0 [ 168.885538][ C1] R13: dffffc0000000000 R14: 1ffff110144d14d4 R15: ffff8880a4953428 [ 168.894151][ C1] put_task_stack+0xa3/0x130 [ 168.900122][ C1] finish_task_switch+0x3f1/0x550 [ 168.905158][ C1] __schedule+0x9a8/0xcc0 [ 168.909521][ C1] ? ___preempt_schedule+0x16/0x18 [ 168.914657][ C1] preempt_schedule+0xdb/0x120 [ 168.919433][ C1] ___preempt_schedule+0x16/0x18 [ 168.924362][ C1] ? vprintk_emit+0x2fe/0x3a0 [ 168.929190][ C1] ? vprintk_emit+0x368/0x3a0 [ 168.933867][ C1] vprintk_emit+0x36d/0x3a0 [ 168.938368][ C1] vprintk_default+0x28/0x30 [ 168.942945][ C1] vprintk_func+0x158/0x170 [ 168.947434][ C1] printk+0x62/0x8d [ 168.951270][ C1] ? addrconf_notify+0xd37/0x3c90 [ 168.956291][ C1] ? addrconf_notify+0x779/0x3c90 [ 168.961316][ C1] addrconf_notify+0x2c8d/0x3c90 [ 168.966269][ C1] ? lockdep_hardirqs_on+0x3c5/0x7d0 [ 168.971545][ C1] ? __local_bh_enable_ip+0x13a/0x240 [ 168.976910][ C1] ? clusterip_netdev_event+0x48b/0x4a0 [ 168.982448][ C1] ? trace_hardirqs_on+0x74/0x80 [ 168.987385][ C1] ? __local_bh_enable_ip+0x13a/0x240 [ 168.992761][ C1] ? clusterip_netdev_event+0x48b/0x4a0 [ 168.998331][ C1] ? tls_dev_event+0x619/0xc00 [ 169.003263][ C1] ? clusterip_netdev_event+0x48b/0x4a0 [ 169.008803][ C1] ? ip6mr_device_event+0x1ee/0x210 [ 169.014122][ C1] raw_notifier_call_chain+0xec/0x190 [ 169.019501][ C1] netdev_state_change+0x147/0x1f0 [ 169.024605][ C1] linkwatch_do_dev+0x10e/0x160 [ 169.029450][ C1] __linkwatch_run_queue+0x446/0x730 [ 169.034736][ C1] linkwatch_event+0x4c/0x60 [ 169.039319][ C1] process_one_work+0x7ef/0x10d0 [ 169.044263][ C1] worker_thread+0xc01/0x1630 [ 169.048949][ C1] kthread+0x332/0x350 [ 169.053003][ C1] ? rcu_lock_release+0x30/0x30 [ 169.057869][ C1] ? kthread_blkcg+0xe0/0xe0 [ 169.062477][ C1] ret_from_fork+0x24/0x30 [ 169.066915][ C1] rcu: rcu_preempt kthread starved for 10537 jiffies! g6705 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 169.077996][ C1] rcu: RCU grace-period kthread stack dump: [ 169.084070][ C1] rcu_preempt R running task 29104 10 2 0x80004000 [ 169.091984][ C1] Call Trace: [ 169.095269][ C1] __schedule+0x9a0/0xcc0 [ 169.099624][ C1] schedule+0x181/0x210 [ 169.103790][ C1] schedule_timeout+0x14f/0x240 [ 169.108641][ C1] ? run_local_timers+0x120/0x120 [ 169.113660][ C1] rcu_gp_kthread+0xed8/0x1770 [ 169.118420][ C1] kthread+0x332/0x350 [ 169.122477][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 169.127842][ C1] ? kthread_blkcg+0xe0/0xe0 [ 169.132434][ C1] ret_from_fork+0x24/0x30