[ 37.245840] audit: type=1800 audit(1576842994.804:28): pid=6891 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="startpar" name="ssh" dev="sda1" ino=2417 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. [ 37.712280] audit: type=1800 audit(1576842995.274:29): pid=6891 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 37.733767] audit: type=1800 audit(1576842995.294:30): pid=6891 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 47.166102] IPVS: Creating netns size=2712 id=1 [ 47.171210] IPVS: ftp: loaded support on port[0] = 21 Warning: Permanently added '10.128.1.41' (ECDSA) to the list of known hosts. 2019/12/20 11:56:52 parsed 1 programs 2019/12/20 11:56:52 executed programs: 0 [ 54.957374] IPv6: ADDRCONF(NETDEV_CHANGE): nr5: link becomes ready [ 54.967318] IPv6: ADDRCONF(NETDEV_CHANGE): nr3: link becomes ready [ 54.979630] IPv6: ADDRCONF(NETDEV_CHANGE): nr4: link becomes ready [ 54.988738] IPv6: ADDRCONF(NETDEV_CHANGE): nr1: link becomes ready [ 54.996876] IPv6: ADDRCONF(NETDEV_CHANGE): nr2: link becomes ready [ 55.005008] IPv6: ADDRCONF(NETDEV_CHANGE): nr0: link becomes ready [ 55.023176] IPVS: Creating netns size=2712 id=2 [ 55.028600] IPVS: ftp: loaded support on port[0] = 21 [ 55.100601] IPVS: Creating netns size=2712 id=3 [ 55.105739] IPVS: ftp: loaded support on port[0] = 21 [ 55.238602] chnl_net:caif_netlink_parms(): no params data found [ 55.264362] IPVS: Creating netns size=2712 id=4 [ 55.269305] IPVS: ftp: loaded support on port[0] = 21 [ 55.429357] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.436110] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.445416] device bridge_slave_0 entered promiscuous mode [ 55.465607] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.465920] IPVS: Creating netns size=2712 id=5 [ 55.466046] IPVS: ftp: loaded support on port[0] = 21 [ 55.483796] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.493066] device bridge_slave_1 entered promiscuous mode [ 55.603984] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 55.653509] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 55.778963] chnl_net:caif_netlink_parms(): no params data found [ 55.850605] chnl_net:caif_netlink_parms(): no params data found [ 55.865888] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 55.882331] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 55.901386] IPVS: Creating netns size=2712 id=6 [ 55.906248] IPVS: ftp: loaded support on port[0] = 21 [ 56.079712] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.086293] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.095523] device bridge_slave_0 entered promiscuous mode [ 56.156460] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.162943] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.172301] device bridge_slave_1 entered promiscuous mode [ 56.203623] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.210598] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.219645] device bridge_slave_0 entered promiscuous mode [ 56.230491] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 56.272064] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 56.279234] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.286465] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.295551] device bridge_slave_1 entered promiscuous mode [ 56.356975] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 56.426754] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 56.447903] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 56.501064] IPVS: Creating netns size=2712 id=7 [ 56.501955] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 56.513532] IPVS: ftp: loaded support on port[0] = 21 [ 56.564499] chnl_net:caif_netlink_parms(): no params data found [ 56.617693] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 56.696192] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 56.705646] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 56.786085] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 56.893767] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 56.968280] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.975089] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.984219] device bridge_slave_0 entered promiscuous mode [ 56.992295] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 57.038821] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.045810] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.055055] device bridge_slave_1 entered promiscuous mode [ 57.062307] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 57.127982] chnl_net:caif_netlink_parms(): no params data found [ 57.167004] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 57.176134] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 57.192089] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 57.200744] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 57.277736] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 57.330785] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 57.457509] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.476450] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.484554] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.494506] device bridge_slave_0 entered promiscuous mode [ 57.559438] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.566041] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.575307] device bridge_slave_1 entered promiscuous mode [ 57.584896] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 57.594186] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 57.631525] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 57.706119] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 57.756135] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 57.769221] chnl_net:caif_netlink_parms(): no params data found [ 57.786857] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.860856] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 57.888698] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 57.939331] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 57.947862] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.954331] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.966876] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 58.001201] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 58.035877] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 58.072149] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.080879] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.087222] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.116944] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.124011] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.132981] device bridge_slave_0 entered promiscuous mode [ 58.140612] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.147176] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.156169] device bridge_slave_1 entered promiscuous mode [ 58.165421] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 58.224630] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 58.238292] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.287865] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 58.296069] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 58.309365] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 58.321989] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 58.330531] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 58.352973] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 58.372354] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 58.381268] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 58.453993] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 58.471121] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.528581] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 58.553571] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 58.584519] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 58.595475] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 58.603179] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 58.612018] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.618422] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.626787] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.634565] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.640964] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.648650] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 58.659420] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 58.737035] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 58.785500] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 58.797520] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 58.814322] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 58.865400] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 58.874483] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.881073] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.888264] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 58.904998] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 58.913911] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.921973] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.928410] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.943741] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 58.973714] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.993038] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 59.001781] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 59.035213] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 59.056383] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 59.085481] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 59.131032] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.138470] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 59.159497] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 59.288221] netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. [ 59.307620] sch_fq: defrate 0 ignored. [ 59.345665] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.360034] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.367984] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.374609] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.391217] netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. [ 59.408374] sch_fq: defrate 0 ignored. [ 59.423199] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 59.432076] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.441127] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.447495] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.465877] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 59.531704] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.558438] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.572712] netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. [ 59.582524] sch_fq: defrate 0 ignored. [ 59.592833] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 59.617040] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 59.637321] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 59.663436] netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. [ 59.680011] sch_fq: defrate 0 ignored. [ 59.685850] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.736049] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 59.744922] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 59.782962] netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. [ 59.796360] sch_fq: defrate 0 ignored. [ 59.801684] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.811946] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.818360] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.825896] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 59.853652] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.866926] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.873364] bridge0: port 2(bridge_slave_1) entered forwarding state 2019/12/20 11:56:57 executed programs: 11 [ 59.907867] netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. [ 59.918303] sch_fq: defrate 0 ignored. [ 59.942607] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 59.966499] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.975150] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.981640] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.994319] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 60.008559] netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. [ 60.020891] sch_fq: defrate 0 ignored. [ 60.028616] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 60.082450] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.092105] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.098538] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.106144] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 60.136574] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 60.163853] netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. [ 60.173772] sch_fq: defrate 0 ignored. [ 60.188284] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 60.229621] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 60.277957] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 60.308560] netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. [ 60.317739] sch_fq: defrate 0 ignored. [ 60.331442] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 60.637623] netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. [ 60.647309] sch_fq: defrate 0 ignored. [ 168.999770] INFO: rcu_preempt self-detected stall on CPU [ 169.005589] 1-...: (1 GPs behind) idle=fab/140000000000002/0 softirq=11292/11297 fqs=1 [ 169.013824] (t=10501 jiffies g=2147 c=2146 q=91) [ 169.018876] rcu_preempt kthread starved for 10500 jiffies! g2147 c2146 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x1 [ 169.019758] INFO: rcu_preempt detected stalls on CPUs/tasks: [ 169.019763] 1-...: (1 GPs behind) idle=fab/140000000000002/0 softirq=11292/11297 fqs=1 [ 169.019767] (detected by 0, t=10502 jiffies, g=2147, c=2146, q=91) [ 169.019769] Task dump for CPU 1: [ 169.019782] blkid R running task 28944 8354 6691 0x00000008 [ 169.019797] 0000000000000000 ffff8800af0afd30 ffffffff816d64a1 0000000000000000 [ 169.019801] 00000007ffb8a8c9 0000000000000000 0000000000000000 ffff8800af0afce8 [ 169.019805] ffff88012953b220 0000000000000001 00000007ffb8a8c9 0000000000000001 [ 169.019806] Call Trace: [ 169.019816] [] ? mmap_region+0x571/0xf10 [ 169.019820] [] ? do_mmap+0x83a/0xbc0 [ 169.019825] [] ? vm_mmap_pgoff+0x138/0x190 [ 169.019828] [] ? vma_is_stack_for_task+0x90/0x90 [ 169.019833] [] ? vfs_getattr+0x21/0x30 [ 169.019836] [] ? SyS_mmap_pgoff+0x1c0/0x6c0 [ 169.019839] [] ? find_mergeable_anon_vma+0x90/0x90 [ 169.019845] [] ? trace_hardirqs_on_caller+0x44c/0x5e0 [ 169.019850] [] ? trace_hardirqs_on_thunk+0x1b/0x1d [ 169.019855] [] ? SyS_mmap+0x16/0x20 [ 169.019860] [] ? entry_SYSCALL_64_fastpath+0x23/0xc1 [ 169.019866] rcu_preempt kthread starved for 10501 jiffies! g2147 c2146 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x1 [ 169.019878] rcu_preempt S ffff88012b0a7ac8 29392 7 2 0x00000000 [ 169.019882] ffff88012b0a7ac8 ffff88012c020400 ffff88012c020d90 ffff88012c020d68 [ 169.019886] ffff88012c020418 ffff88012b098188 1ffff10000000000 ffff88012b09a1c0 [ 169.019890] ffff88012b098180 ffff88012b0a0000 ffffed0025614001 ffff88012b0a0008 [ 169.019891] Call Trace: [ 169.019895] [] schedule+0x9a/0x1c0 [ 169.019898] [] schedule_timeout+0x2e5/0x670 [ 169.019901] [] ? usleep_range+0x130/0x130 [ 169.019904] [] ? prepare_to_swait+0x11e/0x220 [ 169.019907] [] ? swake_up_all+0x370/0x370 [ 169.019911] [] ? init_timer_on_stack_key+0xe0/0xe0 [ 169.019914] [] ? prepare_to_swait_event+0x6c/0xf0 [ 169.019919] [] rcu_gp_kthread+0xee2/0x1f70 [ 169.019923] [] ? pick_next_task_fair+0xa8e/0x1400 [ 169.019927] [] ? force_qs_rnp+0x400/0x400 [ 169.019931] [] ? trace_hardirqs_on_caller+0x44c/0x5e0 [ 169.019934] [] ? _raw_spin_unlock_irq+0x60/0x80 [ 169.019937] [] ? __schedule+0x1206/0x1c00 [ 169.019940] [] ? force_qs_rnp+0x400/0x400 [ 169.019945] [] kthread+0x209/0x2d0 [ 169.019948] [] ? kthread_create_on_node+0x390/0x390 [ 169.019953] [] ret_from_fork+0x22/0x50 [ 169.019956] [] ? kthread_create_on_node+0x390/0x390 [ 169.020214] INFO: rcu_sched detected stalls on CPUs/tasks: [ 169.020218] 1-...: (10500 ticks this GP) idle=fab/140000000000002/0 softirq=11293/11297 fqs=1 [ 169.020222] (detected by 0, t=10502 jiffies, g=168, c=167, q=1) [ 169.020223] Task dump for CPU 1: [ 169.020234] blkid R running task 28944 8354 6691 0x00000008 [ 169.020238] 0000000000000000 ffff8800af0afd30 ffffffff816d64a1 0000000000000000 [ 169.020242] 00000007ffb8a8c9 0000000000000000 0000000000000000 ffff8800af0afce8 [ 169.020245] ffff88012953b220 0000000000000001 00000007ffb8a8c9 0000000000000001 [ 169.020246] Call Trace: [ 169.020249] [] ? mmap_region+0x571/0xf10 [ 169.020252] [] ? do_mmap+0x83a/0xbc0 [ 169.020256] [] ? vm_mmap_pgoff+0x138/0x190 [ 169.020259] [] ? vma_is_stack_for_task+0x90/0x90 [ 169.020262] [] ? vfs_getattr+0x21/0x30 [ 169.020265] [] ? SyS_mmap_pgoff+0x1c0/0x6c0 [ 169.020268] [] ? find_mergeable_anon_vma+0x90/0x90 [ 169.020272] [] ? trace_hardirqs_on_caller+0x44c/0x5e0 [ 169.020276] [] ? trace_hardirqs_on_thunk+0x1b/0x1d [ 169.020280] [] ? SyS_mmap+0x16/0x20 [ 169.020283] [] ? entry_SYSCALL_64_fastpath+0x23/0xc1 [ 169.020288] rcu_sched kthread starved for 10501 jiffies! g168 c167 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x1 [ 169.020300] rcu_sched S ffff88012b0afac8 29392 8 2 0x00000000 [ 169.020304] ffff88012b0afac8 ffff88012c020400 ffff88012c020d90 ffff88012c020d68 [ 169.020308] ffff88012c020418 ffff88012b09a1c8 1ffff10000000000 ffff88012b022080 [ 169.020312] ffff88012b09a1c0 ffff88012b0a8000 ffffed0025615001 ffff88012b0a8008 [ 169.020312] Call Trace: [ 169.020316] [] schedule+0x9a/0x1c0 [ 169.020318] [] schedule_timeout+0x2e5/0x670 [ 169.020321] [] ? usleep_range+0x130/0x130 [ 169.020324] [] ? prepare_to_swait+0x11e/0x220 [ 169.020327] [] ? swake_up_all+0x370/0x370 [ 169.020330] [] ? init_timer_on_stack_key+0xe0/0xe0 [ 169.020334] [] ? prepare_to_swait_event+0x6c/0xf0 [ 169.020337] [] rcu_gp_kthread+0xee2/0x1f70 [ 169.020342] [] ? pick_next_task_fair+0xa8e/0x1400 [ 169.020346] [] ? force_qs_rnp+0x400/0x400 [ 169.020349] [] ? trace_hardirqs_on_caller+0x44c/0x5e0 [ 169.020352] [] ? _raw_spin_unlock_irq+0x60/0x80 [ 169.020355] [] ? __schedule+0x1206/0x1c00 [ 169.020358] [] ? force_qs_rnp+0x400/0x400 [ 169.020362] [] kthread+0x209/0x2d0 [ 169.020365] [] ? kthread_create_on_node+0x390/0x390 [ 169.020369] [] ret_from_fork+0x22/0x50 [ 169.020373] [] ? kthread_create_on_node+0x390/0x390 [ 169.592787] rcu_preempt R running task 29392 7 2 0x00000000 [ 169.600232] ffff88012b0a7ac8 ffff88012c020400 ffff88012c020d90 ffff88012c020d68 [ 169.608292] ffff88012c020418 ffff88012b098188 1ffff10000000000 ffff88012b09a1c0 [ 169.616348] ffff88012b098180 ffff88012b0a0000 ffffed0025614001 ffff88012b0a0008 [ 169.624413] Call Trace: [ 169.626985] [] schedule+0x9a/0x1c0 [ 169.632177] [] schedule_timeout+0x2e5/0x670 [ 169.638146] [] ? usleep_range+0x130/0x130 [ 169.643932] [] ? prepare_to_swait+0x11e/0x220 [ 169.650884] [] ? swake_up_all+0x370/0x370 [ 169.656768] [] ? init_timer_on_stack_key+0xe0/0xe0 [ 169.663335] [] ? prepare_to_swait_event+0x6c/0xf0 [ 169.669811] [] rcu_gp_kthread+0xee2/0x1f70 [ 169.675682] [] ? pick_next_task_fair+0xa8e/0x1400 [ 169.682181] [] ? force_qs_rnp+0x400/0x400 [ 169.688138] [] ? trace_hardirqs_on_caller+0x44c/0x5e0 [ 169.695047] [] ? _raw_spin_unlock_irq+0x60/0x80 [ 169.701347] [] ? __schedule+0x1206/0x1c00 [ 169.707129] [] ? force_qs_rnp+0x400/0x400 [ 169.712909] [] kthread+0x209/0x2d0 [ 169.718079] [] ? kthread_create_on_node+0x390/0x390 [ 169.725091] [] ret_from_fork+0x22/0x50 [ 169.731046] [] ? kthread_create_on_node+0x390/0x390 [ 169.737693] Task dump for CPU 1: [ 169.741041] blkid R running task 28944 8354 6691 0x00000008 [ 169.748497] 0000000000001a23 ffff88012c107180 ffffffff813d414c ffffffff81615a00 [ 169.757741] 0000000041b58ab3 ffffffff868f20bf ffffffff813d3ec0 ffff88012c107140 [ 169.765824] ffffffff81483dd4 0000000000000000 ffffffff00000000 ffffffff813d3ec0 [ 169.773899] Call Trace: [ 169.776470] [] sched_show_task+0x28c/0x400 [ 169.783106] [] ? power_down+0xbf/0xbf [ 169.788566] [] ? SyS_sched_rr_get_interval+0x2b0/0x2b0 [ 169.795480] [] ? rcu_dump_cpu_stacks+0x84/0x290 [ 169.801783] [] ? SyS_sched_rr_get_interval+0x2b0/0x2b0 [ 169.808706] [] dump_cpu_task+0x71/0x90 [ 169.814261] [] rcu_dump_cpu_stacks+0x191/0x290 [ 169.820511] [] ? rcu_check_gp_kthread_starvation+0x24d/0x2d0 [ 169.827948] [] rcu_check_callbacks+0xde1/0x2010 [ 169.834265] [] ? trace_hardirqs_off+0xd/0x10 [ 169.840320] [] ? tick_sched_do_timer+0x80/0x80 [ 169.846546] [] ? tick_sched_do_timer+0x80/0x80 [ 169.852884] [] update_process_times+0x34/0x60 [ 169.859026] [] tick_sched_handle.isra.19+0x44/0xe0 [ 169.865602] [] tick_sched_timer+0x64/0xd0 [ 169.871393] [] __hrtimer_run_queues+0x2d4/0xbf0 [ 169.877703] [] ? enqueue_hrtimer+0x380/0x380 [ 169.883757] [] ? ktime_get_update_offsets_now+0x139/0x350 [ 169.890933] [] ? hrtimer_interrupt+0x139/0x470 [ 169.897160] [] hrtimer_interrupt+0x19d/0x470 [ 169.903218] [] local_apic_timer_interrupt+0x6e/0xf0 [ 169.909938] [] smp_apic_timer_interrupt+0x76/0xa0 [ 169.916431] [] apic_timer_interrupt+0x8c/0xa0 [ 169.922575] [] ? fq_dequeue+0x510/0x1520 [ 169.928283] [] ? fq_dequeue+0x19/0x1520 [ 169.933896] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 169.940662] [] __qdisc_run+0x15e/0x760 [ 169.946189] [] __dev_queue_xmit+0xa0e/0x1f40 [ 169.952246] [] ? __dev_queue_xmit+0x1b9/0x1f40 [ 169.958469] [] ? __lock_acquire+0xca1/0x5560 [ 169.964598] [] ? netdev_pick_tx+0x2a0/0x2a0 [ 169.970685] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 169.977449] [] ? mark_held_locks+0xc8/0x120 [ 169.983605] [] ? ip6_finish_output2+0xd6a/0x1b90 [ 169.989999] [] dev_queue_xmit+0xb/0x10 [ 169.995539] [] ip6_finish_output2+0xf20/0x1b90 [ 170.001758] [] ? ip6_finish_output+0x353/0x700 [ 170.008515] [] ? nf_iterate+0x13e/0x220 [ 170.014146] [] ? ip6_copy_metadata+0x7e0/0x7e0 [ 170.020370] [] ? ip6_mtu+0x1cd/0x2c0 [ 170.026832] [] ip6_finish_output+0x353/0x700 [ 170.033541] [] ip6_output+0x167/0x530 [ 170.039034] [] ? ip6_finish_output+0x700/0x700 [ 170.045259] [] ? ip6_fragment+0x3940/0x3940 [ 170.051332] [] NF_HOOK_THRESH.constprop.24+0xc9/0x290 [ 170.058292] [] ? pndisc_constructor+0x200/0x200 [ 170.064606] [] ? ndisc_error_report+0x160/0x160 [ 170.070946] [] ndisc_send_skb+0x7a4/0x1010 [ 170.077126] [] ? ndisc_send_skb+0x618/0x1010 [ 170.083387] [] ? pndisc_destructor+0x1e0/0x1e0 [ 170.090054] [] ? skb_to_sgvec+0x90/0x90 [ 170.095750] [] ? ndisc_fill_addr_option+0x179/0x260 [ 170.102400] [] ndisc_send_rs+0x116/0x3d0 [ 170.108268] [] addrconf_rs_timer+0x28a/0x410 [ 170.114686] [] ? ipv6_get_lladdr+0x3f0/0x3f0 [ 170.120730] [] call_timer_fn+0x14e/0x620 [ 170.127499] [] ? call_timer_fn+0xc9/0x620 [ 170.133367] [] ? ipv6_get_lladdr+0x3f0/0x3f0 [ 170.139433] [] ? timer_fixup_init+0x30/0x30 [ 170.145477] [] ? _raw_spin_unlock_irq+0x27/0x80 [ 170.151781] [] ? trace_hardirqs_on_caller+0x1aa/0x5e0 [ 170.158604] [] run_timer_softirq+0x5f7/0x9c0 [ 170.164645] [] ? ipv6_get_lladdr+0x3f0/0x3f0 [ 170.170685] [] ? call_timer_fn+0x620/0x620 [ 170.176727] [] __do_softirq+0x2cc/0xa06 [ 170.182349] [] ? sched_clock+0x31/0x40 [ 170.188044] [] irq_exit+0x157/0x190 [ 170.193304] [] smp_apic_timer_interrupt+0x7b/0xa0 [ 170.200477] [] apic_timer_interrupt+0x8c/0xa0 [ 170.206611] [] ? atime_needs_update+0x4e0/0x4e0 [ 170.213663] [] ? is_module_text_address+0x5/0x50 [ 170.220050] [] ? is_module_text_address+0x2a/0x50 [ 170.226522] [] __kernel_text_address+0x61/0xa0 [ 170.232735] [] print_context_stack+0x7b/0xc0 [ 170.238779] [] dump_trace+0x11d/0x320 [ 170.244212] [] save_stack_trace+0x26/0x50 [ 170.249993] [] save_stack+0x46/0xd0 [ 170.256204] [] ? save_stack_trace+0x26/0x50 [ 170.262155] [] ? save_stack+0x46/0xd0 [ 170.267587] [] ? current_kernel_time64+0xc3/0x1a0 [ 170.274084] [] ? trace_hardirqs_on_caller+0x44c/0x5e0 [ 170.280903] [] ? trace_hardirqs_on+0xd/0x10 [ 170.286868] [] ? current_fs_time+0x11/0x70 [ 170.292735] [] ? current_fs_time+0x47/0x70 [ 170.298601] [] ? find_get_entry+0x168/0x3a0 [ 170.304557] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 170.311380] [] ? __lock_acquire+0x1985/0x5560 [ 170.317533] [] ? touch_atime+0xbe/0x250 [ 170.323153] [] ? atime_needs_update+0x4e0/0x4e0 [ 170.329807] [] ? mark_held_locks+0xc8/0x120 [ 170.335850] [] ? kasan_unpoison_shadow+0x36/0x50 [ 170.342245] [] kasan_kmalloc+0xc9/0xe0 [ 170.347766] [] kasan_slab_alloc+0x12/0x20 [ 170.353545] [] kmem_cache_alloc+0x127/0x6c0 [ 170.359501] [] ? vma_merge+0x160/0xc20 [ 170.365023] [] mmap_region+0x571/0xf10 [ 170.370632] [] do_mmap+0x83a/0xbc0 [ 170.375823] [] vm_mmap_pgoff+0x138/0x190 [ 170.381691] [] ? vma_is_stack_for_task+0x90/0x90 [ 170.388080] [] ? vfs_getattr+0x21/0x30 [ 170.393652] [] SyS_mmap_pgoff+0x1c0/0x6c0 [ 170.399432] [] ? find_mergeable_anon_vma+0x90/0x90 [ 170.405994] [] ? trace_hardirqs_on_caller+0x44c/0x5e0 [ 170.412839] [] ? trace_hardirqs_on_thunk+0x1b/0x1d [ 170.419503] [] SyS_mmap+0x16/0x20 [ 170.424596] [] entry_SYSCALL_64_fastpath+0x23/0xc1