[ 42.584770][ T26] audit: type=1800 audit(1575339994.382:26): pid=7958 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 42.625949][ T26] audit: type=1800 audit(1575339994.382:27): pid=7958 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 42.653932][ T26] audit: type=1800 audit(1575339994.382:28): pid=7958 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. [ 43.179575][ T26] audit: type=1800 audit(1575339995.012:29): pid=7958 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 '10.128.0.84' (ECDSA) to the list of known hosts. 2019/12/03 02:26:42 fuzzer started 2019/12/03 02:26:44 dialing manager at 10.128.0.26:38907 2019/12/03 02:26:44 syscalls: 2697 2019/12/03 02:26:44 code coverage: enabled 2019/12/03 02:26:44 comparison tracing: enabled 2019/12/03 02:26:44 extra coverage: extra coverage is not supported by the kernel 2019/12/03 02:26:44 setuid sandbox: enabled 2019/12/03 02:26:44 namespace sandbox: enabled 2019/12/03 02:26:44 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 02:26:44 fault injection: enabled 2019/12/03 02:26:44 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 02:26:44 net packet injection: enabled 2019/12/03 02:26:44 net device setup: enabled 2019/12/03 02:26:44 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 02:26:44 devlink PCI setup: PCI device 0000:00:10.0 is not available 02:26:45 executing program 0: r0 = socket$inet6(0xa, 0x8000000000001, 0x8010000000000084) bind$inet6(r0, &(0x7f00000000c0)={0xa, 0x4e21, 0x0, @empty}, 0x1c) connect$inet6(r0, &(0x7f0000000200)={0xa, 0x4e21, 0x0, @loopback}, 0x1c) write$binfmt_script(r0, &(0x7f0000000500)=ANY=[@ANYBLOB="83755a8b7c9abd0b6d7982dfc9d8ffd41cdbc4a7956b05e0361b19f161b3a4c19859516522d5f3be67b3a35bc789cf00ee54a61c2b8c8eeb524ad1454c075bb62a12a085f41f221bea219d365ac692f98fcd65544faf2702bd843678c3caa842a7dd"], 0x1a000) write$binfmt_script(r0, &(0x7f0000000380)={'#! ', './file0'}, 0xffb8) 02:26:45 executing program 1: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = dup(r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) r2 = bpf$MAP_CREATE(0x0, &(0x7f0000000280)={0x12, 0x107, 0x4, 0x400}, 0x3c) fchmod(r2, 0x0) syzkaller login: [ 53.745619][ T8123] IPVS: ftp: loaded support on port[0] = 21 [ 53.863623][ T8123] chnl_net:caif_netlink_parms(): no params data found [ 53.949576][ T8123] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.957079][ T8123] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.969252][ T8123] device bridge_slave_0 entered promiscuous mode [ 53.989678][ T8123] bridge0: port 2(bridge_slave_1) entered blocking state 02:26:45 executing program 2: r0 = socket$inet6_tcp(0xa, 0x1, 0x0) r1 = fcntl$dupfd(r0, 0x0, r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) r2 = perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0x0, 0xffffffffffffffff, 0x0) mmap(&(0x7f0000ffd000/0x3000)=nil, 0x3000, 0x0, 0x11, r2, 0x6c923000) r3 = perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0x0, 0xffffffffffffffff, 0x0) mmap(&(0x7f0000fff000/0x1000)=nil, 0x1000, 0x0, 0x11, r3, 0x0) [ 53.997037][ T8123] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.004739][ T8126] IPVS: ftp: loaded support on port[0] = 21 [ 54.016387][ T8123] device bridge_slave_1 entered promiscuous mode [ 54.067439][ T8123] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 54.091161][ T8123] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 54.171313][ T8123] team0: Port device team_slave_0 added [ 54.179477][ T8123] team0: Port device team_slave_1 added 02:26:46 executing program 3: capset(&(0x7f00000fc000)={0x20080522}, &(0x7f0000244000)) r0 = socket$inet6(0xa, 0x1000000000002, 0x0) ioctl$sock_SIOCETHTOOL(r0, 0x89f0, &(0x7f0000000040)={'bridge0\x00\x00\x00\x00\x80\x00', &(0x7f0000000000)=@ethtool_cmd={0xa}}) [ 54.270839][ T8123] device hsr_slave_0 entered promiscuous mode [ 54.307599][ T8123] device hsr_slave_1 entered promiscuous mode [ 54.399387][ T8126] chnl_net:caif_netlink_parms(): no params data found [ 54.449981][ T8129] IPVS: ftp: loaded support on port[0] = 21 [ 54.474892][ T8131] IPVS: ftp: loaded support on port[0] = 21 [ 54.493656][ T8126] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.504671][ T8126] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.512786][ T8126] device bridge_slave_0 entered promiscuous mode 02:26:46 executing program 4: r0 = openat$audio(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/audio\x00', 0x4d849987bb922b99, 0x0) ioctl$int_in(r0, 0x8000008004500f, &(0x7f0000000080)) [ 54.548198][ T8123] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 54.599562][ T8123] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 54.641987][ T8123] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 54.689830][ T8126] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.696923][ T8126] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.709098][ T8126] device bridge_slave_1 entered promiscuous mode [ 54.727319][ T8123] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 54.740171][ T8133] IPVS: ftp: loaded support on port[0] = 21 [ 54.780226][ T8123] bridge0: port 2(bridge_slave_1) entered blocking state 02:26:46 executing program 5: r0 = bpf$MAP_CREATE(0x100000000000000, &(0x7f00000000c0)={0xe, 0x4, 0x4, 0x4, 0x0, 0xffffffffffffffff, 0x0, [0x0, 0x0, 0x0, 0x0, 0x2000000]}, 0x3c) bpf$MAP_LOOKUP_ELEM(0x1, &(0x7f0000c88000)={r0, &(0x7f0000847f95), 0x0}, 0x20) [ 54.788030][ T8123] bridge0: port 2(bridge_slave_1) entered forwarding state [ 54.795813][ T8123] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.802916][ T8123] bridge0: port 1(bridge_slave_0) entered forwarding state [ 54.923267][ T8126] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 54.952329][ T22] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.979832][ T22] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.002286][ T8126] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 55.039078][ T8138] IPVS: ftp: loaded support on port[0] = 21 [ 55.039416][ T8131] chnl_net:caif_netlink_parms(): no params data found [ 55.068901][ T8126] team0: Port device team_slave_0 added [ 55.077394][ T8126] team0: Port device team_slave_1 added [ 55.103036][ T8129] chnl_net:caif_netlink_parms(): no params data found [ 55.145414][ T8131] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.153613][ T8131] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.162366][ T8131] device bridge_slave_0 entered promiscuous mode [ 55.171765][ T8131] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.179534][ T8131] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.188054][ T8131] device bridge_slave_1 entered promiscuous mode [ 55.240124][ T8126] device hsr_slave_0 entered promiscuous mode [ 55.298459][ T8126] device hsr_slave_1 entered promiscuous mode [ 55.357478][ T8126] debugfs: Directory 'hsr0' with parent '/' already present! [ 55.413355][ T8123] 8021q: adding VLAN 0 to HW filter on device bond0 [ 55.432547][ T8131] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 55.445621][ T8131] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 55.462414][ T8133] chnl_net:caif_netlink_parms(): no params data found [ 55.501946][ T8129] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.509270][ T8129] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.518010][ T8129] device bridge_slave_0 entered promiscuous mode [ 55.531266][ T8131] team0: Port device team_slave_0 added [ 55.544884][ T8126] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 55.604294][ T8126] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 55.659495][ T8126] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 55.698737][ T8129] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.705816][ T8129] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.713801][ T8129] device bridge_slave_1 entered promiscuous mode [ 55.735199][ T8137] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 55.743674][ T8137] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 55.753164][ T8131] team0: Port device team_slave_1 added [ 55.770064][ T8126] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 55.811079][ T8129] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 55.822128][ T8123] 8021q: adding VLAN 0 to HW filter on device team0 [ 55.842293][ T8129] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 55.858178][ T8133] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.865242][ T8133] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.873632][ T8133] device bridge_slave_0 entered promiscuous mode [ 55.882238][ T8133] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.889351][ T8133] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.897011][ T8133] device bridge_slave_1 entered promiscuous mode [ 55.940228][ T8131] device hsr_slave_0 entered promiscuous mode [ 55.978039][ T8131] device hsr_slave_1 entered promiscuous mode [ 56.017517][ T8131] debugfs: Directory 'hsr0' with parent '/' already present! [ 56.035385][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 56.045748][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 56.054601][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.061750][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 56.088815][ T8133] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.106172][ T8129] team0: Port device team_slave_0 added [ 56.118142][ T8129] team0: Port device team_slave_1 added [ 56.125652][ T8133] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.151511][ T8134] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 56.160761][ T8134] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 56.169456][ T8134] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.176547][ T8134] bridge0: port 2(bridge_slave_1) entered forwarding state [ 56.187637][ T2980] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 56.196184][ T2980] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 56.220833][ T8131] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 56.280319][ T8131] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 56.376643][ T8138] chnl_net:caif_netlink_parms(): no params data found [ 56.398360][ T8131] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 56.441211][ T2980] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 56.449738][ T2980] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 56.458911][ T2980] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 56.520416][ T8129] device hsr_slave_0 entered promiscuous mode [ 56.557798][ T8129] device hsr_slave_1 entered promiscuous mode [ 56.597506][ T8129] debugfs: Directory 'hsr0' with parent '/' already present! [ 56.606674][ T8133] team0: Port device team_slave_0 added [ 56.614477][ T8133] team0: Port device team_slave_1 added [ 56.620445][ T8131] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 56.731812][ T8133] device hsr_slave_0 entered promiscuous mode [ 56.777790][ T8133] device hsr_slave_1 entered promiscuous mode [ 56.818030][ T8133] debugfs: Directory 'hsr0' with parent '/' already present! [ 56.835644][ T8138] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.843493][ T8138] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.851636][ T8138] device bridge_slave_0 entered promiscuous mode [ 56.864688][ T8134] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 56.875427][ T8134] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 56.897137][ T8137] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 56.905772][ T8137] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 56.915889][ T8138] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.923287][ T8138] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.931434][ T8138] device bridge_slave_1 entered promiscuous mode [ 56.952870][ T8138] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.970409][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 56.978847][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 57.003359][ T8126] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.018325][ T8138] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.031704][ T8123] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 57.082442][ T8138] team0: Port device team_slave_0 added [ 57.090988][ T8138] team0: Port device team_slave_1 added [ 57.098047][ T8133] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 57.139277][ T8129] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 57.181654][ T8129] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 57.219864][ T8129] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 57.269465][ T8129] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 57.323439][ T8133] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 57.359946][ T2980] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 57.370885][ T2980] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.379949][ T8126] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.429344][ T8138] device hsr_slave_0 entered promiscuous mode [ 57.477692][ T8138] device hsr_slave_1 entered promiscuous mode [ 57.517399][ T8138] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.529381][ T8133] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 57.579116][ T8133] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 57.635640][ T8123] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 57.651133][ T2980] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 57.663684][ T2980] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 57.672160][ T2980] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 57.681531][ T2980] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 57.690128][ T2980] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.697255][ T2980] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.732938][ T2980] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 57.747666][ T2980] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 57.758554][ T2980] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 57.785320][ T2980] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.792470][ T2980] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.906387][ T8131] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.947295][ T8131] 8021q: adding VLAN 0 to HW filter on device team0 [ 162.787208][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 162.794194][ C0] (detected by 0, t=10502 jiffies, g=6009, q=1515) [ 162.800767][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294953428-4294942925), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 162.814107][ C0] rcu_preempt R running task 29104 10 2 0x80004008 [ 162.821995][ C0] Call Trace: [ 162.825265][ C0] [ 162.828111][ C0] sched_show_task+0x40f/0x560 [ 162.832874][ C0] rcu_sched_clock_irq+0x1861/0x1ad0 [ 162.838168][ C0] update_process_times+0x12d/0x180 [ 162.843422][ C0] tick_sched_timer+0x263/0x420 [ 162.848275][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 162.853816][ C0] __hrtimer_run_queues+0x403/0x840 [ 162.859025][ C0] hrtimer_interrupt+0x38c/0xda0 [ 162.863973][ C0] ? debug_smp_processor_id+0x9/0x20 [ 162.869305][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 162.874851][ C0] apic_timer_interrupt+0xf/0x20 [ 162.879902][ C0] [ 162.882854][ C0] RIP: 0010:__memcg_kmem_uncharge+0x211/0x2e0 [ 162.888918][ C0] 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 [ 162.908615][ C0] RSP: 0018:ffffc90000d0fc18 EFLAGS: 00000292 ORIG_RAX: ffffffffffffff13 [ 162.917085][ C0] RAX: 0000000000000001 RBX: ffffea00023be680 RCX: 0000000000000000 [ 162.925072][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea00023be680 [ 162.933171][ C0] RBP: ffffc90000d0fc38 R08: 000000000003a768 R09: fffffbfff120248a [ 162.941150][ C0] R10: fffffbfff120248a R11: 0000000000000000 R12: ffffea00023be680 [ 162.949128][ C0] R13: 1ffffd4000477cd7 R14: ffffea00023be6b8 R15: 0000000000000000 [ 162.957137][ C0] free_thread_stack+0x12e/0x590 [ 162.962078][ C0] put_task_stack+0xa3/0x130 [ 162.966679][ C0] finish_task_switch+0x3f1/0x550 [ 162.971703][ C0] __schedule+0x9a8/0xcc0 [ 162.976051][ C0] schedule+0x181/0x210 [ 162.980215][ C0] schedule_timeout+0x14f/0x240 [ 162.985160][ C0] ? run_local_timers+0x120/0x120 [ 162.990181][ C0] rcu_gp_kthread+0xed8/0x1770 [ 162.995057][ C0] kthread+0x332/0x350 [ 162.999116][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 163.004230][ C0] ? kthread_blkcg+0xe0/0xe0 [ 163.008846][ C0] ret_from_fork+0x24/0x30 [ 163.013277][ C0] rcu: rcu_preempt kthread starved for 10524 jiffies! g6009 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 163.024536][ C0] rcu: RCU grace-period kthread stack dump: [ 163.030437][ C0] rcu_preempt R running task 29104 10 2 0x80004008 [ 163.038338][ C0] Call Trace: [ 163.041767][ C0] [ 163.044620][ C0] sched_show_task+0x40f/0x560 [ 163.049382][ C0] rcu_check_gp_kthread_starvation+0x170/0x1b0 [ 163.055552][ C0] rcu_sched_clock_irq+0x17d3/0x1ad0 [ 163.060951][ C0] update_process_times+0x12d/0x180 [ 163.066168][ C0] tick_sched_timer+0x263/0x420 [ 163.071062][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 163.076715][ C0] __hrtimer_run_queues+0x403/0x840 [ 163.081941][ C0] hrtimer_interrupt+0x38c/0xda0 [ 163.086952][ C0] ? debug_smp_processor_id+0x9/0x20 [ 163.092270][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 163.097823][ C0] apic_timer_interrupt+0xf/0x20 [ 163.102752][ C0] [ 163.105687][ C0] RIP: 0010:__memcg_kmem_uncharge+0x211/0x2e0 [ 163.111760][ C0] 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 [ 163.131657][ C0] RSP: 0018:ffffc90000d0fc18 EFLAGS: 00000292 ORIG_RAX: ffffffffffffff13 [ 163.140151][ C0] RAX: 0000000000000001 RBX: ffffea00023be680 RCX: 0000000000000000 [ 163.148202][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea00023be680 [ 163.156165][ C0] RBP: ffffc90000d0fc38 R08: 000000000003a768 R09: fffffbfff120248a [ 163.164124][ C0] R10: fffffbfff120248a R11: 0000000000000000 R12: ffffea00023be680 [ 163.172111][ C0] R13: 1ffffd4000477cd7 R14: ffffea00023be6b8 R15: 0000000000000000 [ 163.180098][ C0] free_thread_stack+0x12e/0x590 [ 163.185025][ C0] put_task_stack+0xa3/0x130 [ 163.189610][ C0] finish_task_switch+0x3f1/0x550 [ 163.194629][ C0] __schedule+0x9a8/0xcc0 [ 163.198952][ C0] schedule+0x181/0x210 [ 163.203097][ C0] schedule_timeout+0x14f/0x240 [ 163.207932][ C0] ? run_local_timers+0x120/0x120 [ 163.213243][ C0] rcu_gp_kthread+0xed8/0x1770 [ 163.218026][ C0] kthread+0x332/0x350 [ 163.222086][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 163.227207][ C0] ? kthread_blkcg+0xe0/0xe0 [ 163.231805][ C0] ret_from_fork+0x24/0x30