[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 44.779855][ T23] audit: type=1800 audit(1575458310.312:25): pid=8139 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 44.801186][ T23] audit: type=1800 audit(1575458310.312:26): pid=8139 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 44.828057][ T23] audit: type=1800 audit(1575458310.312:27): pid=8139 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 '10.128.15.238' (ECDSA) to the list of known hosts. 2019/12/04 11:18:41 fuzzer started 2019/12/04 11:18:43 dialing manager at 10.128.0.26:36481 2019/12/04 11:18:43 syscalls: 2691 2019/12/04 11:18:43 code coverage: enabled 2019/12/04 11:18:43 comparison tracing: enabled 2019/12/04 11:18:43 extra coverage: extra coverage is not supported by the kernel 2019/12/04 11:18:43 setuid sandbox: enabled 2019/12/04 11:18:43 namespace sandbox: enabled 2019/12/04 11:18:43 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/04 11:18:43 fault injection: enabled 2019/12/04 11:18:43 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/04 11:18:43 net packet injection: enabled 2019/12/04 11:18:43 net device setup: enabled 2019/12/04 11:18:43 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/04 11:18:43 devlink PCI setup: PCI device 0000:00:10.0 is not available 11:18:44 executing program 0: r0 = socket$inet6_udplite(0xa, 0x2, 0x88) ioctl$sock_SIOCETHTOOL(r0, 0x8946, &(0x7f0000000040)={'syz_tun\x00', &(0x7f00000000c0)=@ethtool_channels={0x3d}}) 11:18:44 executing program 1: r0 = socket$inet6(0xa, 0x3, 0x6b) ioctl(r0, 0x2001000008912, &(0x7f0000000000)="0815b5055e0bcfe87b3071") r1 = socket$inet6_sctp(0xa, 0x1, 0x84) getsockopt$inet_sctp6_SCTP_PR_ASSOC_STATUS(r1, 0x84, 0x7c, &(0x7f0000000280), &(0x7f00000002c0)=0x18) syzkaller login: [ 58.807743][ T8306] IPVS: ftp: loaded support on port[0] = 21 [ 58.959987][ T8308] IPVS: ftp: loaded support on port[0] = 21 [ 58.975002][ T8306] chnl_net:caif_netlink_parms(): no params data found 11:18:44 executing program 2: r0 = syz_open_dev$vbi(&(0x7f0000001780)='/dev/vbi#\x00', 0x0, 0x2) ioctl$VIDIOC_REQBUFS(r0, 0xc0145608, &(0x7f0000001900)={0x0, 0x6}) [ 59.053181][ T8306] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.078107][ T8306] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.086442][ T8306] device bridge_slave_0 entered promiscuous mode [ 59.112206][ T8306] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.128126][ T8306] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.136121][ T8306] device bridge_slave_1 entered promiscuous mode [ 59.192702][ T8306] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.215514][ T8306] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.233456][ T8311] IPVS: ftp: loaded support on port[0] = 21 11:18:44 executing program 3: r0 = socket$inet6(0xa, 0x80002, 0x0) setsockopt$inet6_IPV6_FLOWLABEL_MGR(r0, 0x29, 0x20, &(0x7f0000000000)={@mcast2, 0x800, 0x0, 0xff, 0x100000000000001}, 0x20) r1 = socket$inet6(0xa, 0x80002, 0x0) setsockopt$inet6_IPV6_FLOWLABEL_MGR(r1, 0x29, 0x20, &(0x7f0000000040)={@mcast2={0xff, 0x2, [0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xa4ffffff]}, 0x800, 0x2, 0x0, 0x0, 0x6, 0x100}, 0x20) [ 59.307393][ T8306] team0: Port device team_slave_0 added [ 59.324680][ T8308] chnl_net:caif_netlink_parms(): no params data found [ 59.340023][ T8306] team0: Port device team_slave_1 added 11:18:45 executing program 4: syz_emit_ethernet(0x12, &(0x7f0000000040)={@local, @link_local={0x1, 0x80, 0xc2, 0xe0}, [{}], {@ipv4={0x4305, {{0x5, 0x4, 0x0, 0x0, 0x28, 0x0, 0x0, 0x0, 0x0, 0x0, @rand_addr, @empty}, @tcp={{0x0, 0x0, 0x42424242, 0x41424344, 0x0, 0x0, 0x5}}}}}}, 0x0) [ 59.491943][ T8306] device hsr_slave_0 entered promiscuous mode [ 59.540164][ T8306] device hsr_slave_1 entered promiscuous mode [ 59.633978][ T8314] IPVS: ftp: loaded support on port[0] = 21 [ 59.652529][ T8308] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.661308][ T8308] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.679830][ T8308] device bridge_slave_0 entered promiscuous mode [ 59.730834][ T8308] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.737929][ T8308] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.749361][ T8308] device bridge_slave_1 entered promiscuous mode [ 59.763285][ T8317] IPVS: ftp: loaded support on port[0] = 21 11:18:45 executing program 5: unshare(0x2000400) r0 = creat(&(0x7f0000000180)='./bus\x00', 0x0) fadvise64(r0, 0x0, 0x0, 0x0) [ 59.784995][ T8306] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 59.875864][ T8306] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 59.921604][ T8306] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 59.996261][ T8308] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.023651][ T8306] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 60.083475][ T8308] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.105445][ T8308] team0: Port device team_slave_0 added [ 60.123018][ T8311] chnl_net:caif_netlink_parms(): no params data found [ 60.132654][ T8308] team0: Port device team_slave_1 added [ 60.153567][ T8320] IPVS: ftp: loaded support on port[0] = 21 [ 60.189815][ T8308] device hsr_slave_0 entered promiscuous mode [ 60.239177][ T8308] device hsr_slave_1 entered promiscuous mode [ 60.278214][ T8308] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.360816][ T8308] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 60.392248][ T8308] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 60.445905][ T8311] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.453451][ T8311] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.461163][ T8311] device bridge_slave_0 entered promiscuous mode [ 60.468996][ T8311] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.476062][ T8311] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.484455][ T8311] device bridge_slave_1 entered promiscuous mode [ 60.496004][ T8308] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 60.551804][ T8308] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 60.647104][ T8311] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.698731][ T8317] chnl_net:caif_netlink_parms(): no params data found [ 60.710637][ T8311] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.738518][ T8314] chnl_net:caif_netlink_parms(): no params data found [ 60.801790][ T8311] team0: Port device team_slave_0 added [ 60.837440][ T8317] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.848878][ T8317] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.856631][ T8317] device bridge_slave_0 entered promiscuous mode [ 60.873191][ T8311] team0: Port device team_slave_1 added [ 60.880571][ T8314] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.887916][ T8314] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.899023][ T8314] device bridge_slave_0 entered promiscuous mode [ 60.920573][ T8306] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.927831][ T8317] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.938561][ T8317] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.946328][ T8317] device bridge_slave_1 entered promiscuous mode [ 60.962047][ T8320] chnl_net:caif_netlink_parms(): no params data found [ 60.970690][ T8314] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.977757][ T8314] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.986923][ T8314] device bridge_slave_1 entered promiscuous mode [ 61.003505][ T8308] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.030479][ T8317] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.049156][ T8314] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.079704][ T8317] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.094410][ T8308] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.102819][ T8314] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.116234][ T8306] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.170847][ T8311] device hsr_slave_0 entered promiscuous mode [ 61.208497][ T8311] device hsr_slave_1 entered promiscuous mode [ 61.248594][ T8311] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.256194][ T2732] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.265100][ T2732] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.273472][ T2732] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.281528][ T2732] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.315291][ T8320] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.324728][ T8320] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.333263][ T8320] device bridge_slave_0 entered promiscuous mode [ 61.341334][ T8320] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.348634][ T8320] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.356208][ T8320] device bridge_slave_1 entered promiscuous mode [ 61.363616][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 61.372673][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.382309][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.389538][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.397432][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 61.407038][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.415536][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.422707][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.438435][ T8317] team0: Port device team_slave_0 added [ 61.456816][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 61.464867][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 61.473329][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 61.481909][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.491154][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.498243][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.524400][ T8320] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.535264][ T8314] team0: Port device team_slave_0 added [ 61.543576][ T8317] team0: Port device team_slave_1 added [ 61.561531][ T8320] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.577350][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 61.586883][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.595401][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.602494][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.610105][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 61.618834][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.627435][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 61.636136][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.644561][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 61.653259][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.731114][ T8317] device hsr_slave_0 entered promiscuous mode [ 61.768563][ T8317] device hsr_slave_1 entered promiscuous mode [ 61.808241][ T8317] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.817403][ T8314] team0: Port device team_slave_1 added [ 61.830892][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 61.840685][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.862448][ T8320] team0: Port device team_slave_0 added [ 61.887628][ T8316] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.897431][ T8316] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 61.906927][ T8316] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.915394][ T8316] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 61.924112][ T8316] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 61.933590][ T8316] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.944723][ T8320] team0: Port device team_slave_1 added [ 61.955909][ T8308] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 61.968415][ T8308] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 62.020124][ T8314] device hsr_slave_0 entered promiscuous mode [ 62.058453][ T8314] device hsr_slave_1 entered promiscuous mode [ 62.088298][ T8314] debugfs: Directory 'hsr0' with parent '/' already present! [ 62.098499][ T8316] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 62.106971][ T8316] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 62.115504][ T8316] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 62.124815][ T8316] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 62.133595][ T8316] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 62.141935][ T8316] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 62.163617][ T8306] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 62.175209][ T8306] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 62.183299][ T8311] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 62.252568][ T8311] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 62.310451][ T8311] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 62.350091][ T8311] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 62.395252][ T8316] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 62.404016][ T8316] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 62.490272][ T8320] device hsr_slave_0 entered promiscuous mode [ 62.528720][ T8320] device hsr_slave_1 entered promiscuous mode [ 62.578195][ T8320] debugfs: Directory 'hsr0' with parent '/' already present! [ 62.587197][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 62.594899][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 62.604534][ T8308] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 62.645925][ T8317] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 62.673290][ T8317] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 62.720439][ T8317] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 62.770582][ T8316] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 62.778325][ T8316] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 62.789397][ T8306] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 62.798487][ T8314] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 62.860227][ T8314] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 62.899897][ T8314] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 62.940486][ T8314] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 62.983652][ T8317] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 168.157972][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 168.165155][ C1] (detected by 1, t=10502 jiffies, g=6465, q=338) [ 168.171643][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294953946-4294943443), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 168.184991][ C1] syz-executor.3 R running task 24840 8314 8313 0x0000400a [ 168.192890][ C1] Call Trace: [ 168.196164][ C1] [ 168.199011][ C1] sched_show_task+0x40f/0x560 [ 168.203788][ C1] rcu_sched_clock_irq+0x1861/0x1ad0 [ 168.209074][ C1] update_process_times+0x12d/0x180 [ 168.214273][ C1] tick_sched_timer+0x263/0x420 [ 168.219108][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 168.224641][ C1] __hrtimer_run_queues+0x403/0x840 [ 168.229845][ C1] hrtimer_interrupt+0x38c/0xda0 [ 168.234787][ C1] ? debug_smp_processor_id+0x9/0x20 [ 168.240070][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 168.245604][ C1] apic_timer_interrupt+0xf/0x20 [ 168.250533][ C1] [ 168.253461][ C1] RIP: 0010:free_thread_stack+0x151/0x590 [ 168.259170][ C1] Code: 31 f6 e8 a2 a1 6e 00 43 80 3c 2e 00 74 08 4c 89 e7 e8 43 a0 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 25 a0 69 00 48 8b 3b be fc ff ff ff e8 28 04 00 [ 168.278760][ C1] RSP: 0018:ffffc90001f06e98 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 168.287161][ C1] RAX: 1ffff1100d8489c1 RBX: ffff88806c244e08 RCX: 0000000000000000 [ 168.295120][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0001b09180 [ 168.303105][ C1] RBP: ffffc90001f06ed0 R08: 000000000003a728 R09: ffffed1011630ee7 [ 168.311067][ C1] R10: ffffed1011630ee7 R11: 0000000000000000 R12: ffff88806c244ea0 [ 168.319169][ C1] R13: dffffc0000000000 R14: 1ffff1100d8489d4 R15: ffff88808b187728 [ 168.327157][ C1] ? free_thread_stack+0x12e/0x590 [ 168.332291][ C1] put_task_stack+0xa3/0x130 [ 168.336890][ C1] finish_task_switch+0x3f1/0x550 [ 168.341921][ C1] __schedule+0x9a8/0xcc0 [ 168.346271][ C1] ? ___preempt_schedule+0x16/0x18 [ 168.351370][ C1] preempt_schedule+0xdb/0x120 [ 168.356136][ C1] ? addrconf_notify+0x1c17/0x3c90 [ 168.361238][ C1] ___preempt_schedule+0x16/0x18 [ 168.366177][ C1] ? mark_lock+0x107/0x1650 [ 168.370672][ C1] __local_bh_enable_ip+0x17d/0x240 [ 168.376553][ C1] ? addrconf_notify+0x1c17/0x3c90 [ 168.381662][ C1] _raw_write_unlock_bh+0x2f/0x40 [ 168.386677][ C1] addrconf_notify+0x1c17/0x3c90 [ 168.391701][ C1] ? clusterip_netdev_event+0x48b/0x4a0 [ 168.397250][ C1] raw_notifier_call_chain+0xec/0x190 [ 168.402637][ C1] __dev_notify_flags+0x24d/0x4d0 [ 168.407662][ C1] dev_change_flags+0xec/0x190 [ 168.412434][ C1] do_setlink+0xb2e/0x3960 [ 168.416844][ C1] ? memset+0x31/0x40 [ 168.420827][ C1] ? __nla_validate_parse+0x18cd/0x1f40 [ 168.426420][ C1] ? __kasan_check_read+0x11/0x20 [ 168.431435][ C1] rtnl_newlink+0x14dd/0x1bd0 [ 168.436185][ C1] ? rtnl_newlink+0x371/0x1bd0 [ 168.441006][ C1] ? __mutex_lock_common+0x4f5/0x2e10 [ 168.446364][ C1] ? rtnetlink_rcv_msg+0x83c/0xd40 [ 168.451460][ C1] ? rcu_lock_release+0x9/0x30 [ 168.456228][ C1] ? rtnl_setlink+0x490/0x490 [ 168.460892][ C1] rtnetlink_rcv_msg+0x889/0xd40 [ 168.465853][ C1] ? rcu_lock_release+0x9/0x30 [ 168.471498][ C1] ? rcu_lock_release+0x9/0x30 [ 168.476444][ C1] ? rcu_lock_release+0x9/0x30 [ 168.481292][ C1] netlink_rcv_skb+0x19e/0x3d0 [ 168.486043][ C1] ? rtnetlink_bind+0x80/0x80 [ 168.490718][ C1] rtnetlink_rcv+0x1c/0x20 [ 168.495132][ C1] netlink_unicast+0x767/0x920 [ 168.499981][ C1] netlink_sendmsg+0xa21/0xd40 [ 168.504746][ C1] ? netlink_getsockopt+0x9f0/0x9f0 [ 168.509933][ C1] __sys_sendto+0x442/0x5e0 [ 168.514442][ C1] ? fpregs_assert_state_consistent+0xb6/0xe0 [ 168.520513][ C1] ? prepare_exit_to_usermode+0x221/0x5b0 [ 168.526242][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 168.531690][ C1] __x64_sys_sendto+0xe5/0x100 [ 168.536498][ C1] do_syscall_64+0xf7/0x1c0 [ 168.541019][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 168.546914][ C1] RIP: 0033:0x414373 [ 168.550798][ C1] Code: ff 0f 83 b0 19 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d fd 40 66 00 00 75 17 49 89 ca b8 2c 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 81 19 00 00 c3 48 83 ec 08 e8 87 fa ff ff [ 168.570406][ C1] RSP: 002b:00007fffcc55fdb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 168.578802][ C1] RAX: ffffffffffffffda RBX: 0000000000a72200 RCX: 0000000000414373 [ 168.586767][ C1] RDX: 0000000000000020 RSI: 0000000000a72250 RDI: 0000000000000003 [ 168.594746][ C1] RBP: 0000000000000000 R08: 00007fffcc55fdc0 R09: 000000000000000c [ 168.602797][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 168.610756][ C1] R13: 0000000000000000 R14: 0000000000a72250 R15: 0000000000000003 [ 168.618738][ C1] rcu: rcu_preempt kthread starved for 10548 jiffies! g6465 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 168.629835][ C1] rcu: RCU grace-period kthread stack dump: [ 168.635818][ C1] rcu_preempt R running task 29032 10 2 0x80004000 [ 168.643761][ C1] Call Trace: [ 168.647062][ C1] __schedule+0x9a0/0xcc0 [ 168.651398][ C1] schedule+0x181/0x210 [ 168.655551][ C1] schedule_timeout+0x14f/0x240 [ 168.660388][ C1] ? run_local_timers+0x120/0x120 [ 168.665407][ C1] rcu_gp_kthread+0xed8/0x1770 [ 168.670169][ C1] kthread+0x332/0x350 [ 168.674224][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 168.679320][ C1] ? kthread_blkcg+0xe0/0xe0 [ 168.683897][ C1] ret_from_fork+0x24/0x30