[ 41.107210][ T23] audit: type=1800 audit(1575457792.658:27): pid=7898 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 41.156403][ T23] audit: type=1800 audit(1575457792.658:28): pid=7898 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. [ 41.835188][ T23] audit: type=1800 audit(1575457793.448:29): pid=7898 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 41.854591][ T23] audit: type=1800 audit(1575457793.448:30): pid=7898 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.244' (ECDSA) to the list of known hosts. 2019/12/04 11:10:04 fuzzer started 2019/12/04 11:10:06 dialing manager at 10.128.0.26:36481 2019/12/04 11:10:06 syscalls: 2691 2019/12/04 11:10:06 code coverage: enabled 2019/12/04 11:10:06 comparison tracing: enabled 2019/12/04 11:10:06 extra coverage: extra coverage is not supported by the kernel 2019/12/04 11:10:06 setuid sandbox: enabled 2019/12/04 11:10:06 namespace sandbox: enabled 2019/12/04 11:10:06 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/04 11:10:06 fault injection: enabled 2019/12/04 11:10:06 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/04 11:10:06 net packet injection: enabled 2019/12/04 11:10:06 net device setup: enabled 2019/12/04 11:10:06 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/04 11:10:06 devlink PCI setup: PCI device 0000:00:10.0 is not available 11:10:07 executing program 0: mremap(&(0x7f0000001000/0xc00000)=nil, 0xc00000, 0x2000, 0x0, &(0x7f0000c87000/0x2000)=nil) mmap(&(0x7f00008da000/0x1000)=nil, 0x1000, 0x0, 0xb4972, 0xffffffffffffffff, 0x0) r0 = creat(&(0x7f0000000000)='./bus\x00', 0x0) io_setup(0x2349, &(0x7f0000000240)=0x0) io_submit(r1, 0x732, &(0x7f0000000540)=[&(0x7f00000000c0)={0x0, 0x0, 0x80000000000000, 0x1, 0x0, r0, &(0x7f0000000000), 0x377140be6b5ef4c7}]) 11:10:07 executing program 1: r0 = socket$pppoe(0x18, 0x1, 0x0) preadv(0xffffffffffffffff, &(0x7f0000001700)=[{0x0}, {&(0x7f00000001c0)=""/41, 0x29}], 0x2, 0x0) connect$pppoe(r0, &(0x7f0000000000)={0x18, 0x0, {0x4, @dev={[], 0xa}, 'lo\x00'}}, 0x1e) ioctl$SECCOMP_IOCTL_NOTIF_SEND(0xffffffffffffffff, 0xc0182101, &(0x7f00000002c0)={0x0, 0xe489}) sendmmsg(r0, &(0x7f0000001680)=[{{0x0, 0x0, &(0x7f0000000200)=[{&(0x7f0000000040)='M', 0x1}], 0x1}}], 0x1, 0x0) recvmmsg(r0, &(0x7f0000000080)=[{{&(0x7f0000000240)=@vsock={0x28, 0x0, 0x0, @reserved}, 0x80, 0x0}}], 0x4000000000000d8, 0x20033, 0x0) syzkaller login: [ 55.933539][ T8064] IPVS: ftp: loaded support on port[0] = 21 11:10:07 executing program 2: r0 = socket$inet6_tcp(0xa, 0x1, 0x0) r1 = dup2(r0, r0) setsockopt$IP6T_SO_SET_REPLACE(r1, 0x29, 0x40, &(0x7f0000000180)=ANY=[@ANYBLOB="66696c74657200000000000000000000000000000000000076bc108c89c900000000000000000e00000004000000b80400006802000000000000780100007801000068020000e8030000e8030000e8030000e8030000e803000004000000de", @ANYPTR, @ANYBLOB="ff020000000000000000000000000001fe880000000000000000000000000101000000ffffffff00ffffffffff00000000000000ffffffff00000000ff0021000065616d30000000000000000000000062707130000000000000000000000000000000000000000000ff0000000000000000000000000000000000000000000000000000000000ff"], 0x3) [ 56.091679][ T8064] chnl_net:caif_netlink_parms(): no params data found [ 56.101155][ T8067] IPVS: ftp: loaded support on port[0] = 21 [ 56.176402][ T8064] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.201762][ T8064] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.221297][ T8064] device bridge_slave_0 entered promiscuous mode [ 56.243969][ T8064] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.251828][ T8064] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.260909][ T8064] device bridge_slave_1 entered promiscuous mode [ 56.308402][ T8064] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.320928][ T8064] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.351384][ T8064] team0: Port device team_slave_0 added [ 56.358785][ T8064] team0: Port device team_slave_1 added [ 56.368594][ T8067] chnl_net:caif_netlink_parms(): no params data found [ 56.378825][ T8070] IPVS: ftp: loaded support on port[0] = 21 11:10:08 executing program 3: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000300)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = dup(r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) r2 = socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$tipc(&(0x7f0000000040)='TIPC\x00') sendmsg$TIPC_CMD_SET_LINK_PRI(r2, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000100)={0x68, r3, 0x5, 0x0, 0x0, {{}, 0x0, 0x4109, 0x0, {0x4c, 0x18, {0xf00, @media='ib\x00'}}}}, 0x68}}, 0x0) [ 56.481670][ T8064] device hsr_slave_0 entered promiscuous mode [ 56.519972][ T8064] device hsr_slave_1 entered promiscuous mode [ 56.563694][ T8067] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.575702][ T8067] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.599724][ T8067] device bridge_slave_0 entered promiscuous mode [ 56.607331][ T8067] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.619916][ T8067] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.627941][ T8067] device bridge_slave_1 entered promiscuous mode 11:10:08 executing program 4: r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000100)='./cgroup.cpu\x00', 0x200002, 0x0) fchdir(r0) r1 = open(&(0x7f0000000040)='.\x00', 0x0, 0x0) symlinkat(&(0x7f00000000c0)='./file0\x00', r1, &(0x7f0000000400)='./file0\x00') [ 56.676343][ T8072] IPVS: ftp: loaded support on port[0] = 21 [ 56.721464][ T8067] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.736306][ T8064] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 56.854529][ T8067] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.871379][ T8064] netdevsim netdevsim0 netdevsim1: renamed from eth1 11:10:08 executing program 5: mkdir(&(0x7f0000000240)='./file1\x00', 0x0) mount(&(0x7f0000000040)=@nullb='ubi8/nu\\lb0\x00', &(0x7f0000000080)='./file1\x00', &(0x7f00000000c0)='ubifs\x00', 0x0, 0x0) [ 56.921290][ T8064] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 56.998443][ T8075] IPVS: ftp: loaded support on port[0] = 21 [ 57.008651][ T8064] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 57.061958][ T8067] team0: Port device team_slave_0 added [ 57.068954][ T8067] team0: Port device team_slave_1 added [ 57.082491][ T8070] chnl_net:caif_netlink_parms(): no params data found [ 57.123409][ T8077] IPVS: ftp: loaded support on port[0] = 21 [ 57.146293][ T8064] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.153491][ T8064] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.161102][ T8064] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.168148][ T8064] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.197989][ T2943] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.207065][ T2943] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.272347][ T8067] device hsr_slave_0 entered promiscuous mode [ 57.319590][ T8067] device hsr_slave_1 entered promiscuous mode [ 57.359262][ T8067] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.423924][ T8070] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.431199][ T8070] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.438695][ T8070] device bridge_slave_0 entered promiscuous mode [ 57.447677][ T8070] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.454887][ T8070] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.462511][ T8070] device bridge_slave_1 entered promiscuous mode [ 57.506292][ T8070] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.536270][ T8067] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 57.601913][ T8070] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.612268][ T8075] chnl_net:caif_netlink_parms(): no params data found [ 57.643062][ T8072] chnl_net:caif_netlink_parms(): no params data found [ 57.652080][ T8067] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 57.694972][ T8067] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 57.767479][ T8067] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 57.792644][ T8075] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.799921][ T8075] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.807417][ T8075] device bridge_slave_0 entered promiscuous mode [ 57.816558][ T8075] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.824063][ T8075] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.832262][ T8075] device bridge_slave_1 entered promiscuous mode [ 57.845053][ T8070] team0: Port device team_slave_0 added [ 57.852792][ T8070] team0: Port device team_slave_1 added [ 57.926236][ T8077] chnl_net:caif_netlink_parms(): no params data found [ 57.954136][ T8064] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.962375][ T8075] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.041939][ T8070] device hsr_slave_0 entered promiscuous mode [ 58.089828][ T8070] device hsr_slave_1 entered promiscuous mode [ 58.130067][ T8070] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.140115][ T8075] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.149884][ T8072] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.157016][ T8072] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.164857][ T8072] device bridge_slave_0 entered promiscuous mode [ 58.176071][ T8072] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.183482][ T8072] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.191156][ T8072] device bridge_slave_1 entered promiscuous mode [ 58.231838][ T8075] team0: Port device team_slave_0 added [ 58.246846][ T8075] team0: Port device team_slave_1 added [ 58.255155][ T8077] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.263257][ T8077] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.271208][ T8077] device bridge_slave_0 entered promiscuous mode [ 58.290089][ T8072] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.309531][ T8064] 8021q: adding VLAN 0 to HW filter on device team0 [ 58.318110][ T8077] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.326177][ T8077] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.334164][ T8077] device bridge_slave_1 entered promiscuous mode [ 58.342086][ T8072] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.351644][ T8070] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 58.411124][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 58.419900][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 58.471914][ T8075] device hsr_slave_0 entered promiscuous mode [ 58.509814][ T8075] device hsr_slave_1 entered promiscuous mode [ 58.549213][ T8075] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.562991][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 58.572501][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 58.581108][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.588135][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.600464][ T8070] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 58.641536][ T8070] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 58.694899][ T8070] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 58.750330][ T8082] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 58.758910][ T8082] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.767432][ T8082] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.774474][ T8082] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.787546][ T8077] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.803942][ T8077] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.831954][ T8072] team0: Port device team_slave_0 added [ 58.839897][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 58.848393][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 58.865486][ T8064] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 58.876038][ T8064] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 58.897894][ T8067] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.909005][ T8077] team0: Port device team_slave_0 added [ 58.916968][ T8072] team0: Port device team_slave_1 added [ 58.927313][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 58.936132][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 58.944758][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 58.953343][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 58.961799][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 58.970163][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 58.978520][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 58.987067][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 58.998564][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 59.006351][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 59.021999][ T8077] team0: Port device team_slave_1 added [ 59.040366][ T8064] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 59.055281][ T8067] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.071485][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 59.078959][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 59.088398][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 59.096091][ T48] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.172505][ T8072] device hsr_slave_0 entered promiscuous mode [ 59.219403][ T8072] device hsr_slave_1 entered promiscuous mode [ 59.269512][ T8072] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.331963][ T8077] device hsr_slave_0 entered promiscuous mode [ 59.379402][ T8077] device hsr_slave_1 entered promiscuous mode [ 59.419237][ T8077] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.433857][ T8075] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 164.469064][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 164.475989][ C1] rcu: 1-...!: (10499 ticks this GP) idle=0be/1/0x4000000000000002 softirq=10774/10774 fqs=0 [ 164.486554][ C1] (t=10500 jiffies g=5897 q=63) [ 164.491480][ C1] rcu: rcu_preempt kthread starved for 10500 jiffies! g5897 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 164.502583][ C1] rcu: RCU grace-period kthread stack dump: [ 164.508458][ C1] rcu_preempt R running task 29104 10 2 0x80004000 [ 164.516347][ C1] Call Trace: [ 164.519644][ C1] __schedule+0x9a0/0xcc0 [ 164.523968][ C1] schedule+0x181/0x210 [ 164.528112][ C1] schedule_timeout+0x14f/0x240 [ 164.532949][ C1] ? run_local_timers+0x120/0x120 [ 164.537964][ C1] rcu_gp_kthread+0xed8/0x1770 [ 164.542726][ C1] kthread+0x332/0x350 [ 164.546787][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 164.551883][ C1] ? kthread_blkcg+0xe0/0xe0 [ 164.556458][ C1] ret_from_fork+0x24/0x30 [ 164.560872][ C1] NMI backtrace for cpu 1 [ 164.565186][ C1] CPU: 1 PID: 349 Comm: kworker/u4:6 Not tainted 5.4.0-syzkaller #0 [ 164.573154][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 164.583365][ C1] Workqueue: 0x0 (bond0) [ 164.587686][ C1] Call Trace: [ 164.590963][ C1] [ 164.593802][ C1] dump_stack+0x1fb/0x318 [ 164.598121][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 164.602957][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 164.609103][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 164.615163][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 164.621149][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 164.627027][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 164.632129][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 164.637316][ C1] ? trace_hardirqs_off+0x74/0x80 [ 164.643891][ C1] update_process_times+0x12d/0x180 [ 164.649076][ C1] tick_sched_timer+0x263/0x420 [ 164.653911][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 164.659484][ C1] __hrtimer_run_queues+0x403/0x840 [ 164.664680][ C1] hrtimer_interrupt+0x38c/0xda0 [ 164.669623][ C1] ? debug_smp_processor_id+0x9/0x20 [ 164.674898][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 164.680433][ C1] apic_timer_interrupt+0xf/0x20 [ 164.685349][ C1] [ 164.688274][ C1] RIP: 0010:__sanitizer_cov_trace_pc+0x22/0x50 [ 164.694415][ C1] Code: d4 01 3b 00 5b 5d c3 cc 48 8b 04 24 65 48 8b 0c 25 c0 1d 02 00 65 8b 15 38 84 8b 7e f7 c2 00 01 1f 00 75 2c 8b 91 80 13 00 00 <83> fa 02 75 21 48 8b 91 88 13 00 00 48 8b 32 48 8d 7e 01 8b 89 84 [ 164.714140][ C1] RSP: 0018:ffffc90002127bf8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 164.722544][ C1] RAX: ffffffff81487326 RBX: ffffea0001b1c240 RCX: ffff8880a8f560c0 [ 164.730504][ C1] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea0001b1c240 [ 164.738462][ C1] RBP: ffffc90002127c20 R08: dffffc0000000000 R09: fffffbfff120248a [ 164.746546][ C1] R10: fffffbfff120248a R11: 0000000000000000 R12: ffff8880a81ee620 [ 164.754521][ C1] R13: dffffc0000000000 R14: 00000000fffffffc R15: ffff8880a817f568 [ 164.762499][ C1] ? mod_memcg_page_state+0x16/0x190 [ 164.767776][ C1] ? free_thread_stack+0x124/0x590 [ 164.772872][ C1] ? mod_memcg_page_state+0x16/0x190 [ 164.778141][ C1] free_thread_stack+0x168/0x590 [ 164.783069][ C1] put_task_stack+0xa3/0x130 [ 164.787660][ C1] finish_task_switch+0x3f1/0x550 [ 164.792679][ C1] __schedule+0x9a8/0xcc0 [ 164.797006][ C1] schedule+0x181/0x210 [ 164.801152][ C1] worker_thread+0x10d6/0x1630 [ 164.805946][ C1] kthread+0x332/0x350 [ 164.810008][ C1] ? rcu_lock_release+0x30/0x30 [ 164.814848][ C1] ? kthread_blkcg+0xe0/0xe0 [ 164.819439][ C1] ret_from_fork+0x24/0x30