[ 42.347551][ T25] audit: type=1800 audit(1575361022.729:26): pid=8049 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 42.375362][ T25] audit: type=1800 audit(1575361022.729:27): pid=8049 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 42.415384][ T25] audit: type=1800 audit(1575361022.739:28): pid=8049 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. [ 43.067949][ T25] audit: type=1800 audit(1575361023.469:29): pid=8049 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 '10.128.15.227' (ECDSA) to the list of known hosts. 2019/12/03 08:17:14 fuzzer started 2019/12/03 08:17:15 dialing manager at 10.128.0.26:38907 2019/12/03 08:17:15 syscalls: 2697 2019/12/03 08:17:15 code coverage: enabled 2019/12/03 08:17:15 comparison tracing: enabled 2019/12/03 08:17:15 extra coverage: extra coverage is not supported by the kernel 2019/12/03 08:17:15 setuid sandbox: enabled 2019/12/03 08:17:15 namespace sandbox: enabled 2019/12/03 08:17:15 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 08:17:15 fault injection: enabled 2019/12/03 08:17:15 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 08:17:15 net packet injection: enabled 2019/12/03 08:17:15 net device setup: enabled 2019/12/03 08:17:15 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 08:17:15 devlink PCI setup: PCI device 0000:00:10.0 is not available 08:17:16 executing program 0: r0 = openat$vnet(0xffffffffffffff9c, &(0x7f0000000500)='/dev/vhost-net\x00', 0x2, 0x0) ioctl$int_in(r0, 0xaf01, 0x0) r1 = eventfd(0x0) ioctl$VHOST_SET_VRING_ERR(r0, 0x4008af22, &(0x7f0000000000)={0x0, r1}) ioctl$VHOST_SET_VRING_KICK(r0, 0xaf02, 0x0) 08:17:17 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000040)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = socket$inet_udplite(0x2, 0x2, 0x88) r3 = dup(r2) ioctl$PERF_EVENT_IOC_ENABLE(r3, 0x8912, 0x400200) r4 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) r5 = openat$autofs(0xffffffffffffff9c, &(0x7f0000000000)='/dev/autofs\x00', 0x0, 0x0) syz_kvm_setup_cpu$x86(r5, r4, &(0x7f0000fe7000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) syzkaller login: [ 56.774275][ T8216] IPVS: ftp: loaded support on port[0] = 21 08:17:17 executing program 2: openat$proc_capi20(0xffffffffffffff9c, &(0x7f0000000180)='/proc/capi/capi20\x00', 0x0, 0x0) socketpair$unix(0x1, 0x5, 0x0, &(0x7f000001a000)={0xffffffffffffffff, 0xffffffffffffffff}) sendmsg$unix(r1, &(0x7f0000000600)={0x0, 0x0, 0x0, 0x0, &(0x7f0000000280)=[@rights={{0x14, 0x1, 0x1, [r1]}}], 0x18}, 0x0) r2 = dup2(r1, r1) sendmmsg$unix(r0, &(0x7f0000006f00)=[{0x0, 0x0, 0x0, 0x0, &(0x7f0000000480)=[@rights={{0x14, 0x1, 0x1, [r1]}}], 0x18}], 0x1, 0x0) dup2(r0, r2) open(0x0, 0x0, 0x0) fcntl$getown(0xffffffffffffffff, 0x9) socketpair$unix(0x1, 0x2, 0x0, &(0x7f00000001c0)={0xffffffffffffffff, 0xffffffffffffffff}) r5 = dup3(r4, r3, 0x0) ioctl$PERF_EVENT_IOC_ENABLE(r5, 0x8912, 0x0) bpf$BPF_PROG_GET_FD_BY_ID(0xd, 0x0, 0x0) openat$cgroup_procs(0xffffffffffffffff, 0x0, 0x2, 0x0) [ 56.929925][ T8219] IPVS: ftp: loaded support on port[0] = 21 [ 56.970518][ T8216] chnl_net:caif_netlink_parms(): no params data found [ 57.043298][ T8221] IPVS: ftp: loaded support on port[0] = 21 [ 57.079674][ T8216] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.088004][ T8216] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.096131][ T8216] device bridge_slave_0 entered promiscuous mode [ 57.121450][ T8216] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.128851][ T8216] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.136687][ T8216] device bridge_slave_1 entered promiscuous mode 08:17:17 executing program 3: r0 = socket$inet_udplite(0x2, 0x2, 0x88) ioctl(r0, 0x1000008912, &(0x7f00000000c0)="0800a1695e1dcfe87b1071") sendmsg(0xffffffffffffffff, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000009ff0)=[{&(0x7f0000000080)="240000000e0607051dfffd946fa2830020200a0009000100071d85680c1baba20400ff7e", 0x24}], 0x1}, 0x0) r1 = socket(0x10, 0x80002, 0xc) sendmmsg$alg(r1, &(0x7f0000000140), 0x492492492492805, 0x0) [ 57.221233][ T8216] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.266658][ T8216] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.278814][ T8219] chnl_net:caif_netlink_parms(): no params data found [ 57.334176][ T8221] chnl_net:caif_netlink_parms(): no params data found [ 57.361657][ T8216] team0: Port device team_slave_0 added [ 57.384786][ T8219] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.393537][ T8219] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.402092][ T8219] device bridge_slave_0 entered promiscuous mode [ 57.411591][ T8216] team0: Port device team_slave_1 added [ 57.431431][ T8219] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.445385][ T8219] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.452972][ T8219] device bridge_slave_1 entered promiscuous mode [ 57.500442][ T8219] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.520682][ T8219] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link 08:17:17 executing program 4: r0 = syz_open_dev$usbfs(&(0x7f0000000180)='/dev/bus/usb/00#/00#\x00', 0x77, 0x1) ioctl$USBDEVFS_CONTROL(r0, 0xc0185500, &(0x7f0000000080)={0x23, 0x3, 0x0, 0x0, 0x0, 0x0, 0x0}) [ 57.545674][ T8221] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.552775][ T8221] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.565511][ T8225] IPVS: ftp: loaded support on port[0] = 21 [ 57.579131][ T8221] device bridge_slave_0 entered promiscuous mode [ 57.627956][ T8216] device hsr_slave_0 entered promiscuous mode [ 57.665600][ T8216] device hsr_slave_1 entered promiscuous mode [ 57.733403][ T8221] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.742491][ T8221] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.750746][ T8221] device bridge_slave_1 entered promiscuous mode 08:17:18 executing program 5: r0 = socket(0x10, 0x3, 0x0) recvfrom$inet6(r0, 0x0, 0x0, 0x0, 0x0, 0x0) setsockopt$netlink_NETLINK_TX_RING(r0, 0x10e, 0xc, &(0x7f00000000c0)={0x400000b}, 0x10) write(r0, &(0x7f0000000000)="240000001a005f0214f9f4070009041e1100000000000000000000000800040003000000", 0x79) [ 57.790543][ T8219] team0: Port device team_slave_0 added [ 57.806686][ T8219] team0: Port device team_slave_1 added [ 57.824483][ T8227] IPVS: ftp: loaded support on port[0] = 21 [ 57.852485][ T8216] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 57.927875][ T8216] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 57.969445][ T8216] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 58.044114][ T8221] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.065880][ T8216] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 58.167150][ T8219] device hsr_slave_0 entered promiscuous mode [ 58.205666][ T8219] device hsr_slave_1 entered promiscuous mode [ 58.255489][ T8219] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.267076][ T8221] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.298159][ T8229] IPVS: ftp: loaded support on port[0] = 21 [ 58.323558][ T8221] team0: Port device team_slave_0 added [ 58.347614][ T8221] team0: Port device team_slave_1 added [ 58.409149][ T8219] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 58.469022][ T8219] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 58.529308][ T8225] chnl_net:caif_netlink_parms(): no params data found [ 58.577643][ T8221] device hsr_slave_0 entered promiscuous mode [ 58.635681][ T8221] device hsr_slave_1 entered promiscuous mode [ 58.685430][ T8221] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.695218][ T8219] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 58.779259][ T8219] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 58.854229][ T8221] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 58.930037][ T8225] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.938941][ T8225] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.946926][ T8225] device bridge_slave_0 entered promiscuous mode [ 58.956085][ T8221] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 59.010904][ T8221] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 59.049157][ T8225] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.057256][ T8225] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.064840][ T8225] device bridge_slave_1 entered promiscuous mode [ 59.103330][ T8221] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 59.189718][ T8225] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.227626][ T8225] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.252148][ T8225] team0: Port device team_slave_0 added [ 59.261734][ T8225] team0: Port device team_slave_1 added [ 59.275022][ T8227] chnl_net:caif_netlink_parms(): no params data found [ 59.322066][ T8216] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.351685][ T8227] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.359749][ T8227] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.368068][ T8227] device bridge_slave_0 entered promiscuous mode [ 59.377868][ T8227] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.384929][ T8227] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.393273][ T8227] device bridge_slave_1 entered promiscuous mode [ 59.409662][ T8227] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.424200][ T8227] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.436807][ T8229] chnl_net:caif_netlink_parms(): no params data found [ 59.508148][ T8225] device hsr_slave_0 entered promiscuous mode [ 59.565746][ T8225] device hsr_slave_1 entered promiscuous mode [ 59.625428][ T8225] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.659500][ T8219] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.681466][ T8227] team0: Port device team_slave_0 added [ 59.692050][ T8216] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.718968][ T8227] team0: Port device team_slave_1 added [ 59.729656][ T8230] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 59.739529][ T8230] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.755416][ T8232] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 59.765034][ T8232] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.774961][ T8232] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.782221][ T8232] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.791105][ T8232] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 59.799769][ T8232] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.808099][ T8232] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.815141][ T8232] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.822691][ T8232] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 59.831252][ T8232] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 59.840458][ T3091] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 59.848559][ T8229] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.855981][ T8229] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.863523][ T8229] device bridge_slave_0 entered promiscuous mode [ 59.871968][ T8229] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.879141][ T8229] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.887304][ T8229] device bridge_slave_1 entered promiscuous mode [ 59.907242][ T8225] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 59.972392][ T8225] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 60.018245][ T8225] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 60.058281][ T8229] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.071604][ T8236] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 60.081181][ T8236] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 60.089747][ T8236] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 60.103854][ T8216] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 60.115504][ T8216] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 60.129954][ T8225] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 60.247456][ T8227] device hsr_slave_0 entered promiscuous mode [ 60.296437][ T8227] device hsr_slave_1 entered promiscuous mode [ 60.355390][ T8227] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.364080][ T8229] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.373831][ T8236] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 60.382868][ T8236] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 60.391484][ T8236] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 60.399995][ T8236] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 60.409385][ T8236] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 60.417709][ T8236] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 60.426691][ T8236] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 60.441502][ T8219] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.472964][ T8229] team0: Port device team_slave_0 added [ 60.479465][ T8236] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.489031][ T8236] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.506356][ T8216] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 60.537379][ T8221] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.553665][ T8229] team0: Port device team_slave_1 added [ 60.561449][ T8236] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 60.573600][ T8236] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.582282][ T8236] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.593281][ T8236] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.601398][ T8236] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 60.609163][ T8236] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 60.616699][ T8236] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 60.625152][ T8236] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.633663][ T8236] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.640747][ T8236] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.649001][ T8236] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 60.658137][ T8236] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 60.693598][ T8227] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 165.795250][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 165.802038][ C0] rcu: 0-...!: (10499 ticks this GP) idle=db6/1/0x4000000000000002 softirq=10852/10852 fqs=35 [ 165.812686][ C0] (t=10500 jiffies g=6085 q=51) [ 165.817611][ C0] rcu: rcu_preempt kthread starved for 10429 jiffies! g6085 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 165.829559][ C0] rcu: RCU grace-period kthread stack dump: [ 165.835450][ C0] rcu_preempt R running task 29048 10 2 0x80004000 [ 165.843343][ C0] Call Trace: [ 165.846631][ C0] __schedule+0x9a0/0xcc0 [ 165.850957][ C0] schedule+0x181/0x210 [ 165.855118][ C0] schedule_timeout+0x14f/0x240 [ 165.859957][ C0] ? run_local_timers+0x120/0x120 [ 165.864973][ C0] rcu_gp_kthread+0xed8/0x1770 [ 165.869906][ C0] kthread+0x332/0x350 [ 165.873969][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 165.879063][ C0] ? kthread_blkcg+0xe0/0xe0 [ 165.883638][ C0] ret_from_fork+0x24/0x30 [ 165.888060][ C0] NMI backtrace for cpu 0 [ 165.892377][ C0] CPU: 0 PID: 8240 Comm: vhost-8239 Not tainted 5.4.0-syzkaller #0 [ 165.900484][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 165.910539][ C0] Call Trace: [ 165.913822][ C0] [ 165.916671][ C0] dump_stack+0x1fb/0x318 [ 165.920995][ C0] nmi_cpu_backtrace+0xaf/0x1a0 [ 165.925832][ C0] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 165.931976][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 165.938817][ C0] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 165.944787][ C0] arch_trigger_cpumask_backtrace+0x10/0x20 [ 165.950668][ C0] rcu_dump_cpu_stacks+0x15a/0x220 [ 165.955771][ C0] rcu_sched_clock_irq+0xe25/0x1ad0 [ 165.960963][ C0] ? trace_hardirqs_off+0x74/0x80 [ 165.965978][ C0] update_process_times+0x12d/0x180 [ 165.971165][ C0] tick_sched_timer+0x263/0x420 [ 165.976003][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 165.981536][ C0] __hrtimer_run_queues+0x403/0x840 [ 165.986766][ C0] hrtimer_interrupt+0x38c/0xda0 [ 165.991707][ C0] ? debug_smp_processor_id+0x9/0x20 [ 165.997246][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 166.002781][ C0] apic_timer_interrupt+0xf/0x20 [ 166.007703][ C0] [ 166.010630][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x48/0x50 [ 166.016768][ C0] Code: 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 13 00 00 48 39 cf 73 08 48 89 44 f2 08 48 89 3a 0f 1f 80 00 00 00 00 4c 8b 04 24 65 48 8b 04 25 c0 1d 02 00 65 [ 166.036356][ C0] RSP: 0018:ffffc90002017bd0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 [ 166.044753][ C0] RAX: ffffffff81487326 RBX: ffffea0001b068c0 RCX: ffff88808bd04180 [ 166.052711][ C0] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea0001b068c0 [ 166.060670][ C0] RBP: ffffc90002017bf8 R08: 000000000003a768 R09: fffffbfff120248a [ 166.068628][ C0] R10: fffffbfff120248a R11: 0000000000000000 R12: ffff88806c19cd20 [ 166.076585][ C0] R13: dffffc0000000000 R14: 00000000fffffffc R15: ffff8880a8243528 [ 166.084558][ C0] ? mod_memcg_page_state+0x16/0x190 [ 166.089835][ C0] ? mod_memcg_page_state+0x16/0x190 [ 166.095106][ C0] free_thread_stack+0x168/0x590 [ 166.100034][ C0] put_task_stack+0xa3/0x130 [ 166.104610][ C0] finish_task_switch+0x3f1/0x550 [ 166.109627][ C0] __schedule+0x9a8/0xcc0 [ 166.113953][ C0] ? ___preempt_schedule+0x16/0x18 [ 166.119048][ C0] preempt_schedule+0xdb/0x120 [ 166.123799][ C0] ___preempt_schedule+0x16/0x18 [ 166.128730][ C0] ? complete+0x6f/0xb0 [ 166.132871][ C0] _raw_spin_unlock_irqrestore+0xcc/0xe0 [ 166.138491][ C0] complete+0x6f/0xb0 [ 166.142724][ C0] vhost_flush_work+0x19/0x20 [ 166.147387][ C0] vhost_worker+0x2d5/0x440 [ 166.151896][ C0] kthread+0x332/0x350 [ 166.155950][ C0] ? vhost_dev_set_owner+0x7e0/0x7e0 [ 166.161222][ C0] ? kthread_blkcg+0xe0/0xe0 [ 166.165800][ C0] ret_from_fork+0x24/0x30