[ 42.352382][ T23] audit: type=1800 audit(1575348114.084:26): pid=8008 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 42.395897][ T23] audit: type=1800 audit(1575348114.084:27): pid=8008 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 42.441958][ T23] audit: type=1800 audit(1575348114.104:28): pid=8008 uid=0 auid=4294967295 ses=4294967295 subj=_ 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. [ 43.003721][ T23] audit: type=1800 audit(1575348114.754:29): pid=8008 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.1.28' (ECDSA) to the list of known hosts. 2019/12/03 04:42:04 fuzzer started 2019/12/03 04:42:06 dialing manager at 10.128.0.26:38907 2019/12/03 04:42:06 syscalls: 2697 2019/12/03 04:42:06 code coverage: enabled 2019/12/03 04:42:06 comparison tracing: enabled 2019/12/03 04:42:06 extra coverage: extra coverage is not supported by the kernel 2019/12/03 04:42:06 setuid sandbox: enabled 2019/12/03 04:42:06 namespace sandbox: enabled 2019/12/03 04:42:06 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 04:42:06 fault injection: enabled 2019/12/03 04:42:06 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 04:42:06 net packet injection: enabled 2019/12/03 04:42:06 net device setup: enabled 2019/12/03 04:42:06 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 04:42:06 devlink PCI setup: PCI device 0000:00:10.0 is not available 04:42:07 executing program 0: r0 = socket$inet_udp(0x2, 0x2, 0x0) r1 = dup(r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) r2 = socket$netlink(0x10, 0x3, 0x0) sendmsg$nl_route(r2, &(0x7f0000003740)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000040)=@newlink={0x44, 0x10, 0x701, 0x0, 0x0, {}, [@IFLA_LINKINFO={0x24, 0x12, @bond={{0xc, 0x1, 'bond\x00'}, {0x14, 0x2, [@IFLA_BOND_ARP_IP_TARGET={0x10, 0x8, [@rand_addr=0x9000000, @rand_addr=0x3, @rand_addr]}]}}}]}, 0x44}}, 0x0) 04:42:07 executing program 1: r0 = socket$inet6_tcp(0xa, 0x1, 0x0) r1 = fcntl$dupfd(r0, 0x0, r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000040)={0xffffffffffffffff, 0xffffffffffffffff}) setsockopt$sock_int(r2, 0x1, 0x10, &(0x7f0000000540)=0x5, 0x4) sendmmsg$sock(r2, &(0x7f0000001a40), 0x32, 0x0) syzkaller login: [ 55.787377][ T8174] IPVS: ftp: loaded support on port[0] = 21 04:42:07 executing program 2: socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000180)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = dup(r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) r2 = syz_open_procfs(0xffffffffffffffff, &(0x7f00000001c0)='environ\x00') r3 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000180)='/dev/ptmx\x00', 0x0, 0x0) dup3(r3, r2, 0x0) [ 55.946163][ T8174] chnl_net:caif_netlink_parms(): no params data found [ 55.966867][ T8177] IPVS: ftp: loaded support on port[0] = 21 [ 56.031532][ T8174] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.039263][ T8174] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.047411][ T8174] device bridge_slave_0 entered promiscuous mode [ 56.057431][ T8174] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.064662][ T8174] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.072494][ T8174] device bridge_slave_1 entered promiscuous mode [ 56.098198][ T8174] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.109837][ T8174] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.135749][ T8174] team0: Port device team_slave_0 added [ 56.143085][ T8174] team0: Port device team_slave_1 added 04:42:08 executing program 3: pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) mkdir(&(0x7f0000000080)='./file0\x00', 0x0) write$P9_RVERSION(r1, &(0x7f0000000340)=ANY=[@ANYBLOB="1500000065ffff2180100008003950323030302e5c"], 0x15) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_CREATE_OPEN(r2, &(0x7f0000000400)={0xa0}, 0xa0) write$FUSE_NOTIFY_RETRIEVE(r2, &(0x7f00000000c0)={0x14c}, 0x137) mount$9p_fd(0x0, &(0x7f0000000200)='./file0\x00', &(0x7f0000000300)='9p\x00', 0x0, &(0x7f00000005c0)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r2]) open$dir(&(0x7f0000000080)='./file0\x00', 0x20500, 0x0) [ 56.196998][ T8174] device hsr_slave_0 entered promiscuous mode [ 56.294735][ T8174] device hsr_slave_1 entered promiscuous mode [ 56.351911][ T8179] IPVS: ftp: loaded support on port[0] = 21 [ 56.423014][ T8181] IPVS: ftp: loaded support on port[0] = 21 04:42:08 executing program 4: r0 = socket$packet(0x11, 0x3, 0x300) setsockopt$SO_ATTACH_FILTER(r0, 0x1, 0x1a, &(0x7f0000fbe000)={0x2, &(0x7f0000000100)=[{0x20, 0x0, 0x0, 0xfffff020}, {0x80000006}]}, 0x10) [ 56.473011][ T8174] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 56.515550][ T8174] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 56.563183][ T8174] netdevsim netdevsim0 netdevsim2: renamed from eth2 04:42:08 executing program 5: r0 = socket$netlink(0x10, 0x3, 0x0) sendmsg$nl_route(r0, &(0x7f0000000240)={0x0, 0xffffff4f, &(0x7f0000000200)={&(0x7f0000000000)=@newlink={0x40, 0x10, 0xffffff1f, 0x0, 0x0, {}, [@IFLA_LINKINFO={0x10, 0x12, @bridge={{0xc, 0x1, 'bridge\x00'}, {0x4}}}, @IFLA_ADDRESS={0xa, 0x1, @dev}]}, 0x40}}, 0x0) [ 56.635593][ T8174] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 56.754623][ T8184] IPVS: ftp: loaded support on port[0] = 21 [ 56.767159][ T8177] chnl_net:caif_netlink_parms(): no params data found [ 56.782682][ T8174] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.789869][ T8174] bridge0: port 2(bridge_slave_1) entered forwarding state [ 56.797719][ T8174] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.804813][ T8174] bridge0: port 1(bridge_slave_0) entered forwarding state [ 56.861962][ T8177] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.869363][ T8177] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.878510][ T8177] device bridge_slave_0 entered promiscuous mode [ 56.887184][ T8177] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.894354][ T8177] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.896562][ T8186] IPVS: ftp: loaded support on port[0] = 21 [ 56.908246][ T8177] device bridge_slave_1 entered promiscuous mode [ 56.940748][ T2707] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.949138][ T2707] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.967671][ T8177] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.024789][ T8177] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.086475][ T8179] chnl_net:caif_netlink_parms(): no params data found [ 57.099849][ T8181] chnl_net:caif_netlink_parms(): no params data found [ 57.135416][ T8177] team0: Port device team_slave_0 added [ 57.143207][ T8177] team0: Port device team_slave_1 added [ 57.191369][ T8181] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.199070][ T8181] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.207356][ T8181] device bridge_slave_0 entered promiscuous mode [ 57.221503][ T8181] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.228719][ T8181] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.236637][ T8181] device bridge_slave_1 entered promiscuous mode [ 57.243975][ T8179] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.251186][ T8179] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.259106][ T8179] device bridge_slave_0 entered promiscuous mode [ 57.268120][ T8179] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.275479][ T8179] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.283148][ T8179] device bridge_slave_1 entered promiscuous mode [ 57.345045][ T8177] device hsr_slave_0 entered promiscuous mode [ 57.393803][ T8177] device hsr_slave_1 entered promiscuous mode [ 57.433464][ T8177] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.449644][ T8174] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.502698][ T8184] chnl_net:caif_netlink_parms(): no params data found [ 57.542460][ T8181] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.554261][ T8181] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.567101][ T8179] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.580460][ T8179] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.605442][ T8177] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 57.656576][ T8177] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 57.733075][ T8186] chnl_net:caif_netlink_parms(): no params data found [ 57.746241][ T8179] team0: Port device team_slave_0 added [ 57.755805][ T8177] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 57.799526][ T8177] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 57.869895][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 57.878352][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.888568][ T8181] team0: Port device team_slave_0 added [ 57.896627][ T8181] team0: Port device team_slave_1 added [ 57.904980][ T8174] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.912636][ T8179] team0: Port device team_slave_1 added [ 57.929175][ T8184] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.936894][ T8184] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.944971][ T8184] device bridge_slave_0 entered promiscuous mode [ 57.982418][ T8184] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.993961][ T8184] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.001898][ T8184] device bridge_slave_1 entered promiscuous mode [ 58.010613][ T8186] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.018744][ T8186] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.026872][ T8186] device bridge_slave_0 entered promiscuous mode [ 58.085817][ T8179] device hsr_slave_0 entered promiscuous mode [ 58.123825][ T8179] device hsr_slave_1 entered promiscuous mode [ 58.163552][ T8179] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.171452][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 58.180367][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 58.189679][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.196768][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.221147][ T8186] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.229207][ T8186] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.237249][ T8186] device bridge_slave_1 entered promiscuous mode [ 58.258636][ T8186] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.274403][ T8192] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 58.283911][ T8192] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.292178][ T8192] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.299278][ T8192] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.356158][ T8181] device hsr_slave_0 entered promiscuous mode [ 58.393747][ T8181] device hsr_slave_1 entered promiscuous mode [ 58.463472][ T8181] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.471346][ T8184] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.487588][ T8186] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.508440][ T8186] team0: Port device team_slave_0 added [ 58.531166][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 58.540403][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 58.551755][ T8184] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.563121][ T8186] team0: Port device team_slave_1 added [ 58.646124][ T8186] device hsr_slave_0 entered promiscuous mode [ 58.693667][ T8186] device hsr_slave_1 entered promiscuous mode [ 58.733387][ T8186] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.750139][ T8174] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 58.760905][ T8174] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 58.774439][ T8192] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 58.783620][ T8192] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 58.792250][ T8192] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 58.801618][ T8192] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 58.810210][ T8192] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 58.818518][ T8192] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 58.827330][ T8192] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 58.835682][ T8192] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 58.860284][ T8184] team0: Port device team_slave_0 added [ 58.876338][ T8192] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 58.886384][ T8192] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 58.912099][ T8184] team0: Port device team_slave_1 added [ 58.931466][ T8179] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 59.004832][ T8186] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 59.035529][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 59.042961][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 59.050856][ T8179] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 59.105244][ T8179] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 59.147667][ T8181] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 59.215570][ T8181] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 59.275614][ T8181] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 59.318159][ T8186] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 59.380045][ T8186] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 59.437387][ T8179] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 59.498705][ T8174] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 59.506233][ T8181] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 59.551002][ T8186] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 59.645450][ T8184] device hsr_slave_0 entered promiscuous mode [ 59.696502][ T8184] device hsr_slave_1 entered promiscuous mode [ 59.743408][ T8184] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.781894][ T8177] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.852963][ T8177] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.872142][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 59.882485][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.903577][ T8184] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 164.943263][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 164.950030][ C1] rcu: 1-...!: (10499 ticks this GP) idle=f32/1/0x4000000000000002 softirq=11894/11894 fqs=41 [ 164.960593][ C1] (t=10500 jiffies g=6177 q=167) [ 164.965617][ C1] rcu: rcu_preempt kthread starved for 10415 jiffies! g6177 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 164.976707][ C1] rcu: RCU grace-period kthread stack dump: [ 164.982591][ C1] rcu_preempt R running task 28992 10 2 0x80004000 [ 164.990502][ C1] Call Trace: [ 164.993788][ C1] __schedule+0x9a0/0xcc0 [ 164.998116][ C1] schedule+0x181/0x210 [ 165.002264][ C1] schedule_timeout+0x14f/0x240 [ 165.007104][ C1] ? run_local_timers+0x120/0x120 [ 165.012124][ C1] rcu_gp_kthread+0xed8/0x1770 [ 165.016887][ C1] kthread+0x332/0x350 [ 165.020945][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 165.026155][ C1] ? kthread_blkcg+0xe0/0xe0 [ 165.030737][ C1] ret_from_fork+0x24/0x30 [ 165.035157][ C1] NMI backtrace for cpu 1 [ 165.039577][ C1] CPU: 1 PID: 8197 Comm: kthreadd Not tainted 5.4.0-syzkaller #0 [ 165.047284][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 165.057330][ C1] Call Trace: [ 165.060601][ C1] [ 165.063443][ C1] dump_stack+0x1fb/0x318 [ 165.067769][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 165.072607][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 165.078756][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 165.084824][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 165.090802][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 165.096685][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 165.101791][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 165.106998][ C1] ? trace_hardirqs_off+0x74/0x80 [ 165.112013][ C1] update_process_times+0x12d/0x180 [ 165.117204][ C1] tick_sched_timer+0x263/0x420 [ 165.122052][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 165.127590][ C1] __hrtimer_run_queues+0x403/0x840 [ 165.132839][ C1] hrtimer_interrupt+0x38c/0xda0 [ 165.137793][ C1] ? debug_smp_processor_id+0x9/0x20 [ 165.143074][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 165.148668][ C1] apic_timer_interrupt+0xf/0x20 [ 165.153610][ C1] [ 165.156548][ C1] RIP: 0010:free_thread_stack+0x133/0x590 [ 165.162261][ C1] 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 [ 165.181860][ C1] RSP: 0018:ffffc90002347e40 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 165.190263][ C1] RAX: 0000000000000001 RBX: ffffea00028ad440 RCX: 0000000000000000 [ 165.198229][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea00028ad440 [ 165.206202][ C1] RBP: ffffc90002347e78 R08: 000000000003a768 R09: fffffbfff120248a [ 165.214160][ C1] R10: fffffbfff120248a R11: 0000000000000000 R12: ffff8880a1b078a0 [ 165.222130][ C1] R13: dffffc0000000000 R14: 1ffff11014360f14 R15: ffff888094881868 [ 165.230116][ C1] put_task_stack+0xa3/0x130 [ 165.234698][ C1] finish_task_switch+0x3f1/0x550 [ 165.239828][ C1] ? kthread_blkcg+0xe0/0xe0 [ 165.244420][ C1] schedule_tail+0x20/0x1a0 [ 165.248995][ C1] ? kthread_blkcg+0xe0/0xe0 [ 165.253579][ C1] ret_from_fork+0x8/0x30