[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 44.293298][ T23] audit: type=1800 audit(1575443408.927:25): pid=8120 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 44.315793][ T23] audit: type=1800 audit(1575443408.927:26): pid=8120 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 44.373156][ T23] audit: type=1800 audit(1575443408.927:27): pid=8120 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 '10.128.10.21' (ECDSA) to the list of known hosts. 2019/12/04 07:10:18 fuzzer started 2019/12/04 07:10:20 dialing manager at 10.128.0.26:42111 2019/12/04 07:10:20 syscalls: 2689 2019/12/04 07:10:20 code coverage: enabled 2019/12/04 07:10:20 comparison tracing: enabled 2019/12/04 07:10:20 extra coverage: extra coverage is not supported by the kernel 2019/12/04 07:10:20 setuid sandbox: enabled 2019/12/04 07:10:20 namespace sandbox: enabled 2019/12/04 07:10:20 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/04 07:10:20 fault injection: enabled 2019/12/04 07:10:20 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/04 07:10:20 net packet injection: enabled 2019/12/04 07:10:20 net device setup: enabled 2019/12/04 07:10:20 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/04 07:10:20 devlink PCI setup: PCI device 0000:00:10.0 is not available 07:10:21 executing program 0: socketpair(0x1e, 0x80005, 0x0, &(0x7f0000000340)={0x0, 0x0}) close(r0) setsockopt$sock_attach_bpf(r1, 0x10f, 0x87, &(0x7f0000000180), 0x127) perf_event_open(&(0x7f0000000040)={0x2, 0x70, 0xeb, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0x0, 0xffffffffffffffff, 0x0) sendmsg$tipc(r1, &(0x7f0000000500)={&(0x7f0000000280)=@nameseq={0x1e, 0x1, 0x0, {0x0, 0x2}}, 0x10, 0x0}, 0x0) 07:10:22 executing program 1: socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000080)={0xffffffffffffffff, 0xffffffffffffffff}) r2 = dup3(r0, r1, 0x0) ioctl$PERF_EVENT_IOC_ENABLE(r2, 0x8912, 0x400200) syz_mount_image$vfat(&(0x7f00000000c0)='vfat\x00', &(0x7f0000000100)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f0000000140)={[{@fat=@fmask={'fmask'}}]}) syzkaller login: [ 57.474622][ T8283] IPVS: ftp: loaded support on port[0] = 21 07:10:22 executing program 2: r0 = socket$inet_udplite(0x2, 0x2, 0x88) ioctl(r0, 0x1000008912, &(0x7f00000000c0)="0800b5055e0bcfe87b0071") r1 = bpf$MAP_CREATE(0x0, &(0x7f0000000000)={0xb, 0x5, 0x209e1e, 0x100000001, 0x1}, 0x3c) bpf$MAP_GET_NEXT_KEY(0x4, &(0x7f0000000300)={r1, &(0x7f00000001c0)="1eff639cc78429e69fef730472baf839cb1a66f1da5c4aaedd6d4438cf9f1070c8f5795b16ba49319173deb92fabff9a6d62081c4af02df6188ade2c51b65d9b2018831e51cc39a1ded6aa771cd3725f180523d437dbdd781ccd586d7e895bf6d306dc992315ff0e57c7715090ea6ba8c0afa26b3676aa489188027286224dadd9007004a0", 0x0}, 0x20) bpf$MAP_UPDATE_ELEM(0x2, &(0x7f0000000b40)={r1, &(0x7f0000000300), &(0x7f0000000340)}, 0x20) bpf$MAP_LOOKUP_ELEM(0x1, &(0x7f0000000080)={r1, &(0x7f0000000240), 0x0}, 0x20) [ 57.648106][ T8286] IPVS: ftp: loaded support on port[0] = 21 [ 57.661576][ T8283] chnl_net:caif_netlink_parms(): no params data found [ 57.734148][ T8283] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.743450][ T8283] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.752451][ T8283] device bridge_slave_0 entered promiscuous mode [ 57.764089][ T8283] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.772277][ T8283] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.781540][ T8283] device bridge_slave_1 entered promiscuous mode [ 57.827656][ T8283] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.847776][ T8283] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.867460][ T8289] IPVS: ftp: loaded support on port[0] = 21 [ 57.897827][ T8283] team0: Port device team_slave_0 added [ 57.921029][ T8283] team0: Port device team_slave_1 added 07:10:22 executing program 3: r0 = socket$inet6_tcp(0xa, 0x1, 0x0) setsockopt$IP6T_SO_SET_REPLACE(r0, 0x29, 0x40, &(0x7f0000000100)=ANY=[@ANYRES32, @ANYBLOB="6d047c005d52994c0afc21be2900000047e2252cb7882b9abb2a2f9fb9399e0400c33f00102b0200000089da006a001499b2d1b3a4952f36def66e54e4c909c01e8c4e61f8a0e814f7e2acdd0063c7caa49d5c0600000000000000dc10000000009796b966422ac67e307a1c75f954035ac283ff9d1030bf5e7af1300fa159e8941f9e1653c4155eeb84ea556a428657a686295981d565ed8b40b8382c58a17e2ee72ddd8e12402a08de7a022be9d4c732feee4ed546ef97318f10f82b7a446bcd59bf9117673acfa22a2230ad43936500de7c065b8cc0b53b7f78e7505d8e05b0a973753800016ee05b5cd6"], 0x2) [ 57.972898][ T8286] chnl_net:caif_netlink_parms(): no params data found [ 58.049207][ T8283] device hsr_slave_0 entered promiscuous mode [ 58.135787][ T8283] device hsr_slave_1 entered promiscuous mode 07:10:22 executing program 4: capset(&(0x7f0000000000)={0x400019980330}, &(0x7f0000000200)={0x102c, 0x7fff}) r0 = socket$inet_udp(0x2, 0x2, 0x0) setsockopt$inet_int(r0, 0x0, 0x13, &(0x7f0000000080)=0x200, 0x4) [ 58.195091][ T8292] IPVS: ftp: loaded support on port[0] = 21 [ 58.312545][ T8283] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 58.378908][ T8283] netdevsim netdevsim0 netdevsim1: renamed from eth1 07:10:23 executing program 5: r0 = socket$inet_tcp(0x2, 0x1, 0x0) setsockopt$sock_int(r0, 0x1, 0x3c, &(0x7f0000000440)=0x1, 0xffe6) sendmmsg$inet(r0, &(0x7f0000000ac0)=[{{0x0, 0x0, &(0x7f0000000a00)=[{&(0x7f0000000600)="d0", 0x1}], 0x1}}], 0x1, 0x2604d544) [ 58.438897][ T8286] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.457375][ T8286] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.468354][ T8286] device bridge_slave_0 entered promiscuous mode [ 58.500259][ T8283] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 58.511469][ T8295] IPVS: ftp: loaded support on port[0] = 21 [ 58.547473][ T8283] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 58.608198][ T8286] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.615301][ T8286] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.623785][ T8286] device bridge_slave_1 entered promiscuous mode [ 58.645685][ T8286] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.678895][ T8286] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.692090][ T8289] chnl_net:caif_netlink_parms(): no params data found [ 58.709999][ T8297] IPVS: ftp: loaded support on port[0] = 21 [ 58.782548][ T8286] team0: Port device team_slave_0 added [ 58.793484][ T8286] team0: Port device team_slave_1 added [ 58.848923][ T8286] device hsr_slave_0 entered promiscuous mode [ 58.875825][ T8286] device hsr_slave_1 entered promiscuous mode [ 58.925620][ T8286] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.941634][ T8289] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.949079][ T8289] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.958310][ T8289] device bridge_slave_0 entered promiscuous mode [ 58.967599][ T8289] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.974636][ T8289] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.982554][ T8289] device bridge_slave_1 entered promiscuous mode [ 59.032933][ T8289] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.046287][ T8289] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.055955][ T8292] chnl_net:caif_netlink_parms(): no params data found [ 59.116336][ T8286] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 59.158348][ T8289] team0: Port device team_slave_0 added [ 59.164172][ T8286] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 59.250595][ T8289] team0: Port device team_slave_1 added [ 59.257021][ T8286] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 59.309602][ T8286] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 59.478895][ T8289] device hsr_slave_0 entered promiscuous mode [ 59.525862][ T8289] device hsr_slave_1 entered promiscuous mode [ 59.566113][ T8289] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.585820][ T8292] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.592935][ T8292] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.600775][ T8292] device bridge_slave_0 entered promiscuous mode [ 59.608355][ T8295] chnl_net:caif_netlink_parms(): no params data found [ 59.644233][ T8292] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.651616][ T8292] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.661762][ T8292] device bridge_slave_1 entered promiscuous mode [ 59.681451][ T8292] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.694477][ T8292] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.710259][ T8297] chnl_net:caif_netlink_parms(): no params data found [ 59.731163][ T8283] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.738351][ T8289] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 59.772293][ T8289] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 59.857470][ T8292] team0: Port device team_slave_0 added [ 59.865162][ T8289] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 59.914576][ T8292] team0: Port device team_slave_1 added [ 59.933326][ T8283] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.940938][ T8289] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 59.992783][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.001625][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.018588][ T8295] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.026036][ T8295] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.033687][ T8295] device bridge_slave_0 entered promiscuous mode [ 60.042229][ T8295] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.049527][ T8295] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.057414][ T8295] device bridge_slave_1 entered promiscuous mode [ 60.065230][ T8297] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.072831][ T8297] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.081070][ T8297] device bridge_slave_0 entered promiscuous mode [ 60.089080][ T8297] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.096277][ T8297] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.103867][ T8297] device bridge_slave_1 entered promiscuous mode [ 60.137141][ T8295] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.188574][ T8292] device hsr_slave_0 entered promiscuous mode [ 60.225881][ T8292] device hsr_slave_1 entered promiscuous mode [ 60.275568][ T8292] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.283782][ T3886] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 60.296085][ T3886] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.304553][ T3886] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.311753][ T3886] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.322774][ T3886] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 60.339082][ T8297] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.350080][ T8295] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.373282][ T8295] team0: Port device team_slave_0 added [ 60.386129][ T8297] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.404899][ T8297] team0: Port device team_slave_0 added [ 60.413045][ T8295] team0: Port device team_slave_1 added [ 60.438815][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 60.447608][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.456420][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.463473][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.472263][ T8297] team0: Port device team_slave_1 added [ 60.519319][ T8295] device hsr_slave_0 entered promiscuous mode [ 60.576653][ T8295] device hsr_slave_1 entered promiscuous mode [ 60.635596][ T8295] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.680595][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 60.691488][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 60.701231][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 60.709854][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 60.718967][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 60.729192][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 60.738652][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 60.747527][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 60.788163][ T8297] device hsr_slave_0 entered promiscuous mode [ 60.836071][ T8297] device hsr_slave_1 entered promiscuous mode [ 60.875648][ T8297] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.890553][ T8286] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.907940][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 60.917919][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 60.927492][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 60.937745][ T8283] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 60.954097][ T8295] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 61.000272][ T8295] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 61.054880][ T8286] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.066316][ T8292] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 61.100128][ T8292] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 61.178236][ T3061] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.186421][ T3061] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.203122][ T8283] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 61.211500][ T8295] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 61.261848][ T8295] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 61.298404][ T8292] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 61.357831][ T8292] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 61.397727][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 61.407434][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.415981][ T45] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.423035][ T45] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.430665][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 61.438136][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 61.445838][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 61.454322][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.462850][ T45] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.469969][ T45] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.478235][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 61.533493][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 61.542303][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.551726][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 61.561507][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.570667][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 61.579638][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.588137][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 61.596522][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 61.604665][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 61.613355][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 61.621861][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.630240][ T8297] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 61.684959][ T8297] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 61.728465][ T8286] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 61.761098][ T8289] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.769008][ T8297] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 166.805387][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 166.812661][ C1] (detected by 1, t=10502 jiffies, g=6625, q=110) [ 166.819155][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294953824-4294943321), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 166.832588][ C1] rcu_preempt R running task 29032 10 2 0x80004008 [ 166.840479][ C1] Call Trace: [ 166.843772][ C1] [ 166.846622][ C1] sched_show_task+0x40f/0x560 [ 166.852516][ C1] rcu_sched_clock_irq+0x1861/0x1ad0 [ 166.857891][ C1] update_process_times+0x12d/0x180 [ 166.863184][ C1] tick_sched_timer+0x263/0x420 [ 166.868026][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 166.873563][ C1] __hrtimer_run_queues+0x403/0x840 [ 166.878769][ C1] hrtimer_interrupt+0x38c/0xda0 [ 166.883718][ C1] ? debug_smp_processor_id+0x9/0x20 [ 166.888996][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 166.894533][ C1] apic_timer_interrupt+0xf/0x20 [ 166.899464][ C1] [ 166.902409][ C1] RIP: 0010:free_thread_stack+0x18b/0x590 [ 166.908127][ 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 [ 166.927903][ C1] RSP: 0018:ffffc90000d0fc48 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 166.936354][ C1] RAX: 1ffff1101295e8e1 RBX: ffff888094af4708 RCX: ffff8880a9de8280 [ 166.944757][ C1] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea00028bedc0 [ 166.952723][ C1] RBP: ffffc90000d0fc80 R08: dffffc0000000000 R09: fffffbfff120248a [ 166.960689][ C1] R10: fffffbfff120248a R11: 0000000000000000 R12: ffff888094af47a0 [ 166.970423][ C1] R13: dffffc0000000000 R14: 1ffff1101295e8f4 R15: ffff8880a3b0d8a8 [ 166.978411][ C1] ? free_thread_stack+0x168/0x590 [ 166.983521][ C1] put_task_stack+0xa3/0x130 [ 166.988101][ C1] finish_task_switch+0x3f1/0x550 [ 166.993119][ C1] __schedule+0x9a8/0xcc0 [ 166.997452][ C1] schedule+0x181/0x210 [ 167.001597][ C1] schedule_timeout+0x14f/0x240 [ 167.006441][ C1] ? run_local_timers+0x120/0x120 [ 167.011548][ C1] rcu_gp_kthread+0xed8/0x1770 [ 167.016319][ C1] kthread+0x332/0x350 [ 167.020383][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 167.025490][ C1] ? kthread_blkcg+0xe0/0xe0 [ 167.030076][ C1] ret_from_fork+0x24/0x30 [ 167.034505][ C1] rcu: rcu_preempt kthread starved for 10524 jiffies! g6625 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 167.045591][ C1] rcu: RCU grace-period kthread stack dump: [ 167.051470][ C1] rcu_preempt R running task 29032 10 2 0x80004008 [ 167.059361][ C1] Call Trace: [ 167.062635][ C1] [ 167.065488][ C1] sched_show_task+0x40f/0x560 [ 167.070265][ C1] rcu_check_gp_kthread_starvation+0x170/0x1b0 [ 167.076414][ C1] rcu_sched_clock_irq+0x17d3/0x1ad0 [ 167.081700][ C1] update_process_times+0x12d/0x180 [ 167.086903][ C1] tick_sched_timer+0x263/0x420 [ 167.091746][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 167.097457][ C1] __hrtimer_run_queues+0x403/0x840 [ 167.102673][ C1] hrtimer_interrupt+0x38c/0xda0 [ 167.107624][ C1] ? debug_smp_processor_id+0x9/0x20 [ 167.112911][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 167.118462][ C1] apic_timer_interrupt+0xf/0x20 [ 167.123387][ C1] [ 167.126316][ C1] RIP: 0010:free_thread_stack+0x18b/0x590 [ 167.132024][ 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 [ 167.151622][ C1] RSP: 0018:ffffc90000d0fc48 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 167.160113][ C1] RAX: 1ffff1101295e8e1 RBX: ffff888094af4708 RCX: ffff8880a9de8280 [ 167.168078][ C1] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea00028bedc0 [ 167.176053][ C1] RBP: ffffc90000d0fc80 R08: dffffc0000000000 R09: fffffbfff120248a [ 167.184017][ C1] R10: fffffbfff120248a R11: 0000000000000000 R12: ffff888094af47a0 [ 167.191979][ C1] R13: dffffc0000000000 R14: 1ffff1101295e8f4 R15: ffff8880a3b0d8a8 [ 167.199969][ C1] ? free_thread_stack+0x168/0x590 [ 167.205074][ C1] put_task_stack+0xa3/0x130 [ 167.209671][ C1] finish_task_switch+0x3f1/0x550 [ 167.214689][ C1] __schedule+0x9a8/0xcc0 [ 167.219021][ C1] schedule+0x181/0x210 [ 167.223525][ C1] schedule_timeout+0x14f/0x240 [ 167.228364][ C1] ? run_local_timers+0x120/0x120 [ 167.233393][ C1] rcu_gp_kthread+0xed8/0x1770 [ 167.238185][ C1] kthread+0x332/0x350 [ 167.242619][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 167.247720][ C1] ? kthread_blkcg+0xe0/0xe0 [ 167.252303][ C1] ret_from_fork+0x24/0x30