[ 41.895461][ T23] audit: type=1800 audit(1575352000.049:26): pid=8028 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 41.930050][ T23] audit: type=1800 audit(1575352000.059:27): pid=8028 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 41.961312][ T23] audit: type=1800 audit(1575352000.059:28): pid=8028 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. [ 42.874219][ T23] audit: type=1800 audit(1575352001.049:29): pid=8028 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 '10.128.15.209' (ECDSA) to the list of known hosts. 2019/12/03 05:48:59 fuzzer started 2019/12/03 05:49:00 dialing manager at 10.128.0.26:38907 2019/12/03 05:49:00 syscalls: 2697 2019/12/03 05:49:00 code coverage: enabled 2019/12/03 05:49:00 comparison tracing: enabled 2019/12/03 05:49:00 extra coverage: extra coverage is not supported by the kernel 2019/12/03 05:49:00 setuid sandbox: enabled 2019/12/03 05:49:00 namespace sandbox: enabled 2019/12/03 05:49:00 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 05:49:00 fault injection: enabled 2019/12/03 05:49:00 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 05:49:00 net packet injection: enabled 2019/12/03 05:49:00 net device setup: enabled 2019/12/03 05:49:00 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 05:49:00 devlink PCI setup: PCI device 0000:00:10.0 is not available 05:49:01 executing program 0: mkdir(&(0x7f0000000000)='./file0\x00', 0x0) setxattr(&(0x7f0000000040)='./file0\x00', &(0x7f0000000140)=@random={'user.\xd5\x1f\x13\xe7\x96\xbda\xd9y\xa6D\xdbP\xb4<\xacZ\x1cN\xae\xc9qF\x9bT\xd1,\xc3t\xdbc\xe9\x9fX \"D\xb3\xf2\xf2\xed\xd7\xf5@\xaf\x9b\xc2\x92g\x91fYGg\xaf0xffffffffffffffff}, 0x86400) r3 = socket$inet_udp(0x2, 0x2, 0x0) setsockopt$EBT_SO_SET_ENTRIES(r3, 0x0, 0x80, 0x0, 0x1b6) connect$pppoe(r1, &(0x7f0000000140)={0x18, 0x0, {0x5, @empty, 'bridge0\x00'}}, 0x1e) shmget(0x2, 0x3000, 0x202, &(0x7f0000ffd000/0x3000)=nil) openat$cgroup_procs(0xffffffffffffffff, &(0x7f00000004c0)='cgroup.procs\x00', 0x2, 0x0) ioctl$TUNSETVNETLE(0xffffffffffffffff, 0x400454dc, 0x0) munlockall() r4 = syz_open_procfs(0xffffffffffffffff, 0x0) sendfile(r4, r4, &(0x7f0000000040)=0x3, 0x6c2b) r5 = dup2(0xffffffffffffffff, r4) bpf$BPF_PROG_ATTACH(0x8, &(0x7f00000003c0)={r5, r2, 0xe, 0x3}, 0x10) sendmmsg(r1, &(0x7f000000d180), 0x4000000000000eb, 0x0) pread64(r0, 0x0, 0x0, 0x0) [ 184.025602][ T8194] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 184.037937][ T8194] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 184.122965][ T8194] team0: Port device team_slave_0 added [ 184.151711][ T8194] team0: Port device team_slave_1 added [ 184.195262][ T8199] IPVS: ftp: loaded support on port[0] = 21 05:49:02 executing program 3: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000080)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = dup(r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) faccessat(0xffffffffffffffff, 0x0, 0x12, 0x0) [ 184.263642][ T8194] device hsr_slave_0 entered promiscuous mode [ 184.320986][ T8194] device hsr_slave_1 entered promiscuous mode [ 184.418599][ T8197] chnl_net:caif_netlink_parms(): no params data found [ 184.443768][ T8202] IPVS: ftp: loaded support on port[0] = 21 05:49:02 executing program 4: r0 = socket$kcm(0x10, 0x2, 0x10) sendmsg$kcm(r0, &(0x7f0000000080)={0x0, 0xffffffffffffff3d, &(0x7f0000000180)=[{&(0x7f0000000040)="2e0000001e000507eda7fc76f8e75a7b0531d200100003402f00000000340080000000011400f88000f01700d0bd", 0x1b7}], 0x1}, 0x0) [ 184.497300][ T8194] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 184.583069][ T8197] bridge0: port 1(bridge_slave_0) entered blocking state [ 184.600228][ T8197] bridge0: port 1(bridge_slave_0) entered disabled state [ 184.619910][ T8197] device bridge_slave_0 entered promiscuous mode [ 184.642231][ T8194] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 184.693788][ T8194] netdevsim netdevsim0 netdevsim2: renamed from eth2 05:49:02 executing program 5: r0 = socket$inet_udp(0x2, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000600)={'bridge_slave_1\x00', 0x0}) r2 = socket$netlink(0x10, 0x3, 0x0) sendmsg$nl_route(r2, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000280)=@bridge_dellink={0x28, 0x11, 0x1, 0x0, 0x0, {0x7, 0x0, 0x0, r1}, [@IFLA_AF_SPEC={0x8, 0x1a, [{0x4, 0x2}]}]}, 0x28}}, 0x0) [ 184.746102][ T8197] bridge0: port 2(bridge_slave_1) entered blocking state [ 184.755129][ T8197] bridge0: port 2(bridge_slave_1) entered disabled state [ 184.763654][ T8197] device bridge_slave_1 entered promiscuous mode [ 184.780072][ T8194] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 184.792738][ T8205] IPVS: ftp: loaded support on port[0] = 21 [ 184.842264][ T8197] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 184.875578][ T8197] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 184.963575][ T8207] IPVS: ftp: loaded support on port[0] = 21 [ 184.992028][ T8197] team0: Port device team_slave_0 added [ 185.006590][ T8199] chnl_net:caif_netlink_parms(): no params data found [ 185.026862][ T8197] team0: Port device team_slave_1 added [ 185.087974][ T8199] bridge0: port 1(bridge_slave_0) entered blocking state [ 185.097939][ T8199] bridge0: port 1(bridge_slave_0) entered disabled state [ 185.106613][ T8199] device bridge_slave_0 entered promiscuous mode [ 185.115111][ T8199] bridge0: port 2(bridge_slave_1) entered blocking state [ 185.122379][ T8199] bridge0: port 2(bridge_slave_1) entered disabled state [ 185.130786][ T8199] device bridge_slave_1 entered promiscuous mode [ 185.191709][ T8197] device hsr_slave_0 entered promiscuous mode [ 185.240333][ T8197] device hsr_slave_1 entered promiscuous mode [ 185.290292][ T8197] debugfs: Directory 'hsr0' with parent '/' already present! [ 185.335634][ T8199] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 185.351728][ T8199] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 185.383670][ T8199] team0: Port device team_slave_0 added [ 185.407127][ T8205] chnl_net:caif_netlink_parms(): no params data found [ 185.421179][ T8199] team0: Port device team_slave_1 added [ 185.449346][ T8197] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 185.482090][ T8197] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 185.555197][ T8202] chnl_net:caif_netlink_parms(): no params data found [ 185.574646][ T8197] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 185.613736][ T8197] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 185.727455][ T8205] bridge0: port 1(bridge_slave_0) entered blocking state [ 185.737080][ T8205] bridge0: port 1(bridge_slave_0) entered disabled state [ 185.748177][ T8205] device bridge_slave_0 entered promiscuous mode [ 185.763854][ T8205] bridge0: port 2(bridge_slave_1) entered blocking state [ 185.776494][ T8205] bridge0: port 2(bridge_slave_1) entered disabled state [ 185.787395][ T8205] device bridge_slave_1 entered promiscuous mode [ 185.821541][ T8207] chnl_net:caif_netlink_parms(): no params data found [ 185.881942][ T8199] device hsr_slave_0 entered promiscuous mode [ 185.930565][ T8199] device hsr_slave_1 entered promiscuous mode [ 185.990211][ T8199] debugfs: Directory 'hsr0' with parent '/' already present! [ 186.002868][ T8205] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 186.045403][ T8194] 8021q: adding VLAN 0 to HW filter on device bond0 [ 186.063508][ T8205] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 186.075490][ T8202] bridge0: port 1(bridge_slave_0) entered blocking state [ 186.084468][ T8202] bridge0: port 1(bridge_slave_0) entered disabled state [ 186.094652][ T8202] device bridge_slave_0 entered promiscuous mode [ 186.105783][ T8202] bridge0: port 2(bridge_slave_1) entered blocking state [ 186.114239][ T8202] bridge0: port 2(bridge_slave_1) entered disabled state [ 186.122589][ T8202] device bridge_slave_1 entered promiscuous mode [ 186.156828][ T8194] 8021q: adding VLAN 0 to HW filter on device team0 [ 186.173863][ T8202] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 186.186065][ T2709] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 186.197201][ T2709] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 186.243869][ T8202] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 186.270982][ T8199] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 186.332468][ T8199] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 186.392540][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 186.412305][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 186.438305][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 186.449682][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 186.466285][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 186.482318][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 186.493786][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 186.503851][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 186.519496][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 186.533807][ T8205] team0: Port device team_slave_0 added [ 186.543363][ T8205] team0: Port device team_slave_1 added [ 186.561829][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 186.585675][ T8199] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 186.660061][ T8202] team0: Port device team_slave_0 added [ 186.670831][ T8207] bridge0: port 1(bridge_slave_0) entered blocking state [ 186.683142][ T8207] bridge0: port 1(bridge_slave_0) entered disabled state [ 186.693216][ T8207] device bridge_slave_0 entered promiscuous mode [ 186.702250][ T8199] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 186.767092][ T8209] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 186.777960][ T8209] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 186.788053][ T8209] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 186.800749][ T8209] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 186.814358][ T8209] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 186.835328][ T8209] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 186.849683][ T8202] team0: Port device team_slave_1 added [ 186.857479][ T8207] bridge0: port 2(bridge_slave_1) entered blocking state [ 186.865891][ T8207] bridge0: port 2(bridge_slave_1) entered disabled state [ 186.885189][ T8207] device bridge_slave_1 entered promiscuous mode [ 186.925804][ T8207] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 186.973840][ T8205] device hsr_slave_0 entered promiscuous mode [ 187.020431][ T8205] device hsr_slave_1 entered promiscuous mode [ 187.070488][ T8205] debugfs: Directory 'hsr0' with parent '/' already present! [ 187.096646][ T8207] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 187.118669][ T8209] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 187.128697][ T8209] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 187.159591][ T8194] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 187.173487][ T8194] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 187.233806][ T8202] device hsr_slave_0 entered promiscuous mode [ 187.292381][ T8202] device hsr_slave_1 entered promiscuous mode [ 187.350308][ T8202] debugfs: Directory 'hsr0' with parent '/' already present! [ 187.358366][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 187.368037][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 187.387781][ T8197] 8021q: adding VLAN 0 to HW filter on device bond0 [ 187.401162][ T8207] team0: Port device team_slave_0 added [ 187.435843][ T8207] team0: Port device team_slave_1 added [ 187.462981][ T8205] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 187.513806][ T8205] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 187.577211][ T8205] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 187.628863][ T8205] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 187.679480][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 187.687392][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 187.695718][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 187.705129][ T3700] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 187.726953][ T8197] 8021q: adding VLAN 0 to HW filter on device team0 [ 187.737337][ T8194] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 187.813499][ T8207] device hsr_slave_0 entered promiscuous mode [ 187.870608][ T8207] device hsr_slave_1 entered promiscuous mode [ 187.910179][ T8207] debugfs: Directory 'hsr0' with parent '/' already present! [ 187.953278][ T8209] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 187.968058][ T8209] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 187.978632][ T8209] bridge0: port 1(bridge_slave_0) entered blocking state [ 187.987443][ T8209] bridge0: port 1(bridge_slave_0) entered forwarding state [ 188.002848][ T8209] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 188.014584][ T8209] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 188.025219][ T8209] bridge0: port 2(bridge_slave_1) entered blocking state [ 188.032952][ T8209] bridge0: port 2(bridge_slave_1) entered forwarding state [ 188.042768][ T8209] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 188.056491][ T8199] 8021q: adding VLAN 0 to HW filter on device bond0 [ 188.074591][ T8202] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 188.158101][ T8199] 8021q: adding VLAN 0 to HW filter on device team0 [ 188.199084][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 293.229874][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 293.236966][ C0] (detected by 0, t=10502 jiffies, g=6357, q=83) [ 293.243378][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294966471-4294955968), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 293.256723][ C0] blkid X running task 28312 8217 0 0x8000400a [ 293.264621][ C0] Call Trace: [ 293.267893][ C0] [ 293.270868][ C0] sched_show_task+0x40f/0x560 [ 293.275681][ C0] rcu_sched_clock_irq+0x1861/0x1ad0 [ 293.280995][ C0] update_process_times+0x12d/0x180 [ 293.286221][ C0] tick_sched_timer+0x263/0x420 [ 293.291091][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 293.296640][ C0] __hrtimer_run_queues+0x403/0x840 [ 293.301842][ C0] hrtimer_interrupt+0x38c/0xda0 [ 293.307021][ C0] ? debug_smp_processor_id+0x9/0x20 [ 293.312433][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 293.317969][ C0] apic_timer_interrupt+0xf/0x20 [ 293.322888][ C0] [ 293.325955][ C0] RIP: 0010:__memcg_kmem_uncharge+0x6/0x2e0 [ 293.331844][ C0] Code: 90 8c 07 00 74 12 48 81 c3 08 02 00 00 48 89 df 4c 89 f6 e8 dc 7d ff ff 5b 41 5e 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 41 57 <41> 56 41 55 41 54 53 50 89 f3 49 89 fc 48 b8 00 00 00 00 00 fc ff [ 293.351433][ C0] RSP: 0018:ffffc900026b7b80 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 293.359831][ C0] RAX: ffffffff81486ea4 RBX: ffffea00024dfc80 RCX: ffff8880988764c0 [ 293.367795][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea00024dfc80 [ 293.375853][ C0] RBP: ffffc900026b7b88 R08: dffffc0000000000 R09: fffffbfff1287025 [ 293.383837][ C0] R10: fffffbfff1287025 R11: 0000000000000000 R12: ffff8880967e24a0 [ 293.391796][ C0] R13: dffffc0000000000 R14: 1ffff11012cfc494 R15: ffff8880a6387468 [ 293.399880][ C0] ? free_thread_stack+0x124/0x590 [ 293.405031][ C0] free_thread_stack+0x12e/0x590 [ 293.410064][ C0] put_task_stack+0xa3/0x130 [ 293.414648][ C0] finish_task_switch+0x3f1/0x550 [ 293.419847][ C0] __schedule+0x9a8/0xcc0 [ 293.424243][ C0] ? ___preempt_schedule+0x16/0x18 [ 293.429350][ C0] preempt_schedule+0xdb/0x120 [ 293.434103][ C0] ___preempt_schedule+0x16/0x18 [ 293.439029][ C0] ? do_exit+0x1431/0x2020 [ 293.443430][ C0] _raw_write_unlock_irq+0x77/0x80 [ 293.448527][ C0] do_exit+0x1431/0x2020 [ 293.452768][ C0] do_group_exit+0x15c/0x2b0 [ 293.457351][ C0] __do_sys_exit_group+0x17/0x20 [ 293.462295][ C0] __se_sys_exit_group+0x14/0x20 [ 293.467221][ C0] __x64_sys_exit_group+0x3b/0x40 [ 293.472231][ C0] do_syscall_64+0xf7/0x1c0 [ 293.476726][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 293.482601][ C0] RIP: 0033:0x7f124df351e8 [ 293.487014][ C0] Code: Bad RIP value. [ 293.491066][ C0] RSP: 002b:00007ffe269836e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 293.499467][ C0] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f124df351e8 [ 293.507698][ C0] RDX: 0000000000000002 RSI: 000000000000003c RDI: 0000000000000002 [ 293.515664][ C0] RBP: 00007f124e20a840 R08: 00000000000000e7 R09: ffffffffffffffa8 [ 293.523642][ C0] R10: 00007f124e210740 R11: 0000000000000246 R12: 00007f124e20a840 [ 293.531625][ C0] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 [ 293.542227][ C0] rcu: rcu_preempt kthread starved for 10533 jiffies! g6357 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 293.553311][ C0] rcu: RCU grace-period kthread stack dump: [ 293.559187][ C0] rcu_preempt R running task 29032 10 2 0x80004000 [ 293.567073][ C0] Call Trace: [ 293.570357][ C0] __schedule+0x9a0/0xcc0 [ 293.575469][ C0] schedule+0x181/0x210 [ 293.579626][ C0] schedule_timeout+0x14f/0x240 [ 293.584467][ C0] ? run_local_timers+0x120/0x120 [ 293.589496][ C0] rcu_gp_kthread+0xed8/0x1770 [ 293.594320][ C0] kthread+0x332/0x350 [ 293.598386][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 293.603486][ C0] ? kthread_blkcg+0xe0/0xe0 [ 293.608066][ C0] ret_from_fork+0x24/0x30