[ 42.803847][ T25] audit: type=1800 audit(1575319257.269:30): pid=7985 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 '10.128.0.65' (ECDSA) to the list of known hosts. 2019/12/02 20:41:06 fuzzer started 2019/12/02 20:41:07 dialing manager at 10.128.0.26:38907 2019/12/02 20:41:07 syscalls: 2697 2019/12/02 20:41:07 code coverage: enabled 2019/12/02 20:41:07 comparison tracing: enabled 2019/12/02 20:41:07 extra coverage: extra coverage is not supported by the kernel 2019/12/02 20:41:07 setuid sandbox: enabled 2019/12/02 20:41:07 namespace sandbox: enabled 2019/12/02 20:41:07 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/02 20:41:07 fault injection: enabled 2019/12/02 20:41:07 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/02 20:41:07 net packet injection: enabled 2019/12/02 20:41:07 net device setup: enabled 2019/12/02 20:41:07 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/02 20:41:07 devlink PCI setup: PCI device 0000:00:10.0 is not available 20:41:08 executing program 0: socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000380)={0xffffffffffffffff, 0xffffffffffffffff}) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000040)={0xffffffffffffffff, 0xffffffffffffffff}) r2 = dup2(r0, r1) ioctl$PERF_EVENT_IOC_ENABLE(r2, 0x8912, 0x400200) r3 = socket$inet6_tcp(0xa, 0x1, 0x0) setsockopt$inet6_IPV6_FLOWLABEL_MGR(r3, 0x29, 0x20, &(0x7f0000000000)={@remote, 0x0, 0x0, 0x0, 0x4}, 0x20) 20:41:08 executing program 1: r0 = socket$nl_xfrm(0x10, 0x3, 0x6) socketpair$unix(0x1, 0x5, 0x0, &(0x7f00000000c0)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) sendmsg$nl_xfrm(r0, &(0x7f0000000840)={0x0, 0x0, &(0x7f00000004c0)={&(0x7f0000000280)=@newsa={0x144, 0x10, 0x40d, 0x0, 0x0, {{@in=@dev, @in=@empty}, {@in6=@loopback, 0x0, 0x6c}, @in6=@remote, {}, {}, {}, 0x0, 0x0, 0xa}, [@sec_ctx={0xc, 0x8, {0x8}}, @algo_comp={0x48, 0x3, {{'deflate\x00'}}}]}, 0x144}}, 0x0) syzkaller login: [ 54.205798][ T8148] IPVS: ftp: loaded support on port[0] = 21 [ 54.351457][ T8150] IPVS: ftp: loaded support on port[0] = 21 20:41:08 executing program 2: r0 = openat$vicodec1(0xffffffffffffff9c, &(0x7f0000000180)='/dev/video37\x00', 0x2, 0x0) ioctl$VIDIOC_EXPBUF(r0, 0xc0405610, &(0x7f00000001c0)) [ 54.395557][ T8148] chnl_net:caif_netlink_parms(): no params data found [ 54.495412][ T8148] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.504599][ T8148] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.512989][ T8148] device bridge_slave_0 entered promiscuous mode [ 54.535170][ T8148] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.544350][ T8148] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.553262][ T8148] device bridge_slave_1 entered promiscuous mode [ 54.569199][ T8150] chnl_net:caif_netlink_parms(): no params data found [ 54.609781][ T8148] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 54.633498][ T8150] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.642450][ T8150] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.651750][ T8150] device bridge_slave_0 entered promiscuous mode [ 54.661927][ T8148] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 54.697933][ T8148] team0: Port device team_slave_0 added [ 54.703943][ T8150] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.712334][ T8150] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.721505][ T8150] device bridge_slave_1 entered promiscuous mode [ 54.731523][ T8148] team0: Port device team_slave_1 added 20:41:09 executing program 3: syz_mount_image$ntfs(&(0x7f0000000000)='ntfs\x00', &(0x7f0000000140)='./file1\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f0000000300)=ANY=[@ANYBLOB='case_sensitive=no,mft_zone_multiplier=0x0000000000000004,errors=continue']) [ 54.762615][ T8154] IPVS: ftp: loaded support on port[0] = 21 [ 54.829834][ T8148] device hsr_slave_0 entered promiscuous mode [ 54.897099][ T8148] device hsr_slave_1 entered promiscuous mode 20:41:09 executing program 4: openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000140)='cpuacct.stat\x00', 0x0, 0x0) write(0xffffffffffffffff, &(0x7f0000000040)="0f42", 0x2) r0 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) timer_settime(0x0, 0x0, &(0x7f0000000540)={{0x77359400}}, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) setsockopt$inet_pktinfo(0xffffffffffffffff, 0x0, 0x8, &(0x7f0000000480)={0x0, @rand_addr, @dev}, 0x139) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000740)={0x3, 0x2, 0xf000, 0x1000, &(0x7f0000000000/0x1000)=nil}) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000100)={0x0, 0x0, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) ioctl$KVM_SET_REGS(r2, 0x4090ae82, &(0x7f0000000200)={[0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0xfb, 0x0, 0x0, 0x0, 0x400000000000000]}) ioctl$VIDIOC_S_DV_TIMINGS(0xffffffffffffffff, 0xc0845657, &(0x7f0000000640)={0x0, @bt={0x0, 0x0, 0x0, 0x0, 0x0, 0x5, 0x81, 0x3, 0x5, 0x5, 0x10000, 0x0, 0x8001}}) ioctl$KVM_RUN(r2, 0xae80, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) ioctl$KVM_NMI(r2, 0xae9a) ioctl$KVM_SET_REGS(r2, 0x4090ae82, &(0x7f0000000380)) ioctl$KVM_RUN(r2, 0xae80, 0x0) [ 54.948292][ T8150] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 54.969608][ T8150] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 55.031347][ T8150] team0: Port device team_slave_0 added [ 55.055161][ T8156] IPVS: ftp: loaded support on port[0] = 21 [ 55.083606][ T8150] team0: Port device team_slave_1 added [ 55.172484][ T8148] netdevsim netdevsim0 netdevsim0: renamed from eth0 20:41:09 executing program 5: pipe2$9p(&(0x7f0000000180)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) r1 = openat$ocfs2_control(0xffffffffffffff9c, &(0x7f00000001c0)='/dev/ocfs2_control\x00', 0x0, 0x0) splice(r1, 0x0, r0, 0x0, 0x800000a, 0x0) [ 55.233579][ T8148] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 55.328400][ T8150] device hsr_slave_0 entered promiscuous mode [ 55.377119][ T8150] device hsr_slave_1 entered promiscuous mode [ 55.446796][ T8150] debugfs: Directory 'hsr0' with parent '/' already present! [ 55.459003][ T8148] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 55.520584][ T8148] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 55.585231][ T8158] IPVS: ftp: loaded support on port[0] = 21 [ 55.608301][ T8160] IPVS: ftp: loaded support on port[0] = 21 [ 55.685887][ T8150] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 55.736998][ T8154] chnl_net:caif_netlink_parms(): no params data found [ 55.768415][ T8154] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.776105][ T8154] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.784913][ T8154] device bridge_slave_0 entered promiscuous mode [ 55.794036][ T8150] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 55.860361][ T8150] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 55.928935][ T8154] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.936154][ T8154] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.945165][ T8154] device bridge_slave_1 entered promiscuous mode [ 55.963431][ T8150] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 56.025307][ T8154] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.038861][ T8156] chnl_net:caif_netlink_parms(): no params data found [ 56.059787][ T8154] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.096239][ T8156] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.104189][ T8156] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.112498][ T8156] device bridge_slave_0 entered promiscuous mode [ 56.126286][ T8154] team0: Port device team_slave_0 added [ 56.134589][ T8154] team0: Port device team_slave_1 added [ 56.141318][ T8156] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.148962][ T8156] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.157612][ T8156] device bridge_slave_1 entered promiscuous mode [ 56.210947][ T8158] chnl_net:caif_netlink_parms(): no params data found [ 56.227423][ T8156] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.266385][ T8158] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.275362][ T8158] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.284994][ T8158] device bridge_slave_0 entered promiscuous mode [ 56.297994][ T8156] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.326033][ T8158] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.334069][ T8158] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.341936][ T8158] device bridge_slave_1 entered promiscuous mode [ 56.409472][ T8154] device hsr_slave_0 entered promiscuous mode [ 56.447199][ T8154] device hsr_slave_1 entered promiscuous mode [ 56.486815][ T8154] debugfs: Directory 'hsr0' with parent '/' already present! [ 56.505777][ T8156] team0: Port device team_slave_0 added [ 56.518884][ T8148] 8021q: adding VLAN 0 to HW filter on device bond0 [ 56.533624][ T8160] chnl_net:caif_netlink_parms(): no params data found [ 56.545926][ T8156] team0: Port device team_slave_1 added [ 56.561319][ T8148] 8021q: adding VLAN 0 to HW filter on device team0 [ 56.585570][ T3891] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 56.595605][ T3891] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 56.649457][ T8156] device hsr_slave_0 entered promiscuous mode [ 56.687209][ T8156] device hsr_slave_1 entered promiscuous mode [ 56.747614][ T8156] debugfs: Directory 'hsr0' with parent '/' already present! [ 56.757592][ T8158] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.790455][ T8158] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.848190][ T3891] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 56.857352][ T3891] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 56.865948][ T3891] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.873177][ T3891] bridge0: port 1(bridge_slave_0) entered forwarding state [ 56.882739][ T3891] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 56.892592][ T3891] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 56.902453][ T3891] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.909646][ T3891] bridge0: port 2(bridge_slave_1) entered forwarding state [ 56.917729][ T3891] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 56.927025][ T3891] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 56.935839][ T3891] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 56.944681][ T3891] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 56.953514][ T8160] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.960792][ T8160] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.968820][ T8160] device bridge_slave_0 entered promiscuous mode [ 56.982496][ T8160] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.990362][ T8160] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.001097][ T8160] device bridge_slave_1 entered promiscuous mode [ 57.014252][ T8158] team0: Port device team_slave_0 added [ 57.026876][ T8161] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 57.035344][ T8161] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 57.048525][ T8154] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 57.100395][ T8154] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 57.155079][ T8154] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 57.198966][ T8154] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 57.262270][ T8158] team0: Port device team_slave_1 added [ 57.275818][ T8150] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.285158][ T8160] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.297835][ T8160] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.316763][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 57.325681][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 57.335200][ T8156] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 57.379523][ T8156] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 57.428529][ T8156] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 57.482505][ T8156] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 57.541462][ T8160] team0: Port device team_slave_0 added [ 57.551330][ T8160] team0: Port device team_slave_1 added [ 57.580012][ T8150] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.639754][ T8158] device hsr_slave_0 entered promiscuous mode [ 57.697125][ T8158] device hsr_slave_1 entered promiscuous mode [ 57.737464][ T8158] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.750827][ T2936] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 57.759210][ T2936] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.767307][ T2936] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 57.776366][ T2936] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 57.785625][ T2936] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 57.795077][ T2936] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 57.803963][ T2936] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.811413][ T2936] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.819992][ T2936] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 57.835035][ T8148] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 57.847898][ T8148] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 57.898929][ T8160] device hsr_slave_0 entered promiscuous mode [ 57.937536][ T8160] device hsr_slave_1 entered promiscuous mode [ 57.967225][ T8160] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.979216][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 57.989765][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 58.000223][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 58.010071][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.019134][ T43] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.026622][ T43] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.036950][ T8161] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 58.090971][ T8161] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 58.101742][ T8161] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 58.111906][ T8161] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 58.121666][ T8161] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 58.130734][ T8161] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 58.140075][ T8161] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 58.148723][ T8161] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 58.157369][ T8161] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 58.165519][ T8161] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 58.173503][ T8161] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 58.182574][ T8161] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 58.191225][ T8161] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 58.209970][ T8148] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 58.222921][ T8150] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 58.249585][ T8158] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 58.318705][ T8158] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 58.381447][ T8158] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 58.438707][ T8158] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 58.532913][ T8160] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 58.576610][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 58.595283][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 58.614512][ T8171] Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable [ 163.636545][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 163.643556][ C1] (detected by 1, t=10502 jiffies, g=6193, q=121) [ 163.650232][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294953512-4294943009), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 163.663572][ C1] rsyslogd R running task 28072 8023 1 0x0000400a [ 163.671462][ C1] Call Trace: [ 163.674733][ C1] [ 163.677603][ C1] sched_show_task+0x40f/0x560 [ 163.682363][ C1] rcu_sched_clock_irq+0x1861/0x1ad0 [ 163.687831][ C1] update_process_times+0x12d/0x180 [ 163.693028][ C1] tick_sched_timer+0x263/0x420 [ 163.697897][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 163.703464][ C1] __hrtimer_run_queues+0x403/0x840 [ 163.708680][ C1] hrtimer_interrupt+0x38c/0xda0 [ 163.713630][ C1] ? debug_smp_processor_id+0x9/0x20 [ 163.718942][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 163.724484][ C1] apic_timer_interrupt+0xf/0x20 [ 163.729421][ C1] [ 163.732368][ C1] RIP: 0010:__memcg_kmem_uncharge+0x211/0x2e0 [ 163.738434][ C1] Code: 65 db a4 ff 48 c7 c7 98 4b 0d 89 e8 59 97 00 00 bf 01 00 00 00 e8 2f e3 9b ff 65 8b 05 d4 fd 4a 7e 85 c0 74 53 48 83 c4 08 5b <41> 5c 41 5d 41 5e 41 5f 5d c3 49 8d 5f 10 48 89 df be 08 00 00 00 [ 163.758378][ C1] RSP: 0018:ffffc90001cf7a30 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 163.766779][ C1] RAX: 0000000000000001 RBX: ffffea0002a190c0 RCX: 0000000000000000 [ 163.774744][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0002a190c0 [ 163.783573][ C1] RBP: ffffc90001cf7a50 R08: dffffc0000000000 R09: fffffbfff120248a [ 163.791534][ C1] R10: fffffbfff120248a R11: 0000000000000000 R12: ffffea0002a190c0 [ 163.799491][ C1] R13: 1ffffd400054321f R14: ffffea0002a190f8 R15: 0000000000000000 [ 163.807490][ C1] free_thread_stack+0x12e/0x590 [ 163.812427][ C1] put_task_stack+0xa3/0x130 [ 163.817009][ C1] finish_task_switch+0x3f1/0x550 [ 163.822032][ C1] __schedule+0x9a8/0xcc0 [ 163.826361][ C1] schedule+0x181/0x210 [ 163.830509][ C1] do_syslog+0xdc7/0x1740 [ 163.834836][ C1] ? init_wait_entry+0xe0/0xe0 [ 163.839592][ C1] kmsg_read+0x94/0xd0 [ 163.843650][ C1] ? mmap_vmcore_fault+0x10/0x10 [ 163.848577][ C1] proc_reg_read+0x1e2/0x2d0 [ 163.853180][ C1] ? proc_reg_llseek+0x2c0/0x2c0 [ 163.858118][ C1] __vfs_read+0xb8/0x730 [ 163.862352][ C1] ? security_file_permission+0x23c/0x350 [ 163.868068][ C1] ? rw_verify_area+0x1c2/0x360 [ 163.872911][ C1] vfs_read+0x1dd/0x420 [ 163.877158][ C1] ksys_read+0x117/0x220 [ 163.881398][ C1] __x64_sys_read+0x7b/0x90 [ 163.885893][ C1] do_syscall_64+0xf7/0x1c0 [ 163.890385][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 163.896351][ C1] RIP: 0033:0x7f23812b31fd [ 163.900753][ C1] Code: d1 20 00 00 75 10 b8 00 00 00 00 0f 05 48 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 5e fa ff ff 48 89 04 24 b8 00 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 a7 fa ff ff 48 89 d0 48 83 c4 08 48 3d 01 [ 163.920344][ C1] RSP: 002b:00007f237e852e30 EFLAGS: 00000293 ORIG_RAX: 0000000000000000 [ 163.928756][ C1] RAX: ffffffffffffffda RBX: 0000000001e09650 RCX: 00007f23812b31fd [ 163.936713][ C1] RDX: 0000000000000fff RSI: 00007f23800875a0 RDI: 0000000000000004 [ 163.944780][ C1] RBP: 0000000000000000 R08: 0000000001df4260 R09: 0000000004000001 [ 163.952738][ C1] R10: 0000000000000001 R11: 0000000000000293 R12: 000000000065e420 [ 163.960724][ C1] R13: 00007f237e8539c0 R14: 00007f23818f8040 R15: 0000000000000003 [ 163.968709][ C1] rcu: rcu_preempt kthread starved for 10535 jiffies! g6193 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 163.979803][ C1] rcu: RCU grace-period kthread stack dump: [ 163.985681][ C1] rcu_preempt R running task 29104 10 2 0x80004000 [ 163.993570][ C1] Call Trace: [ 163.996849][ C1] __schedule+0x9a0/0xcc0 [ 164.001176][ C1] schedule+0x181/0x210 [ 164.005318][ C1] schedule_timeout+0x14f/0x240 [ 164.010157][ C1] ? run_local_timers+0x120/0x120 [ 164.015173][ C1] rcu_gp_kthread+0xed8/0x1770 [ 164.019953][ C1] kthread+0x332/0x350 [ 164.024003][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 164.029101][ C1] ? kthread_blkcg+0xe0/0xe0 [ 164.033682][ C1] ret_from_fork+0x24/0x30