[ 40.345781][ T23] audit: type=1800 audit(1575449333.424:27): pid=7890 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 40.369978][ T23] audit: type=1800 audit(1575449333.434:28): pid=7890 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. [ 40.950099][ T23] audit: type=1800 audit(1575449334.104:29): pid=7890 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 40.969700][ T23] audit: type=1800 audit(1575449334.104:30): pid=7890 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 08:49:05 fuzzer started 2019/12/04 08:49:06 dialing manager at 10.128.0.26:36481 2019/12/04 08:49:06 syscalls: 2691 2019/12/04 08:49:06 code coverage: enabled 2019/12/04 08:49:06 comparison tracing: enabled 2019/12/04 08:49:06 extra coverage: extra coverage is not supported by the kernel 2019/12/04 08:49:06 setuid sandbox: enabled 2019/12/04 08:49:06 namespace sandbox: enabled 2019/12/04 08:49:06 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/04 08:49:06 fault injection: enabled 2019/12/04 08:49:06 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/04 08:49:06 net packet injection: enabled 2019/12/04 08:49:06 net device setup: enabled 2019/12/04 08:49:06 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/04 08:49:06 devlink PCI setup: PCI device 0000:00:10.0 is not available 08:49:07 executing program 0: r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000040)='/dev/ptmx\x00', 0x0, 0x0) ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000140)=0x2) ioctl$TCXONC(r0, 0x40087101, 0x792000) 08:49:07 executing program 1: r0 = socket$kcm(0x10, 0x2, 0x0) sendmsg$kcm(r0, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000080)=[{&(0x7f0000000040)="2e00000020008108040f80ecdb0000008100001f0e00f87fe8bd6efb12000a0002000200400000ff050005001202", 0x2e}], 0x1}, 0x0) syzkaller login: [ 54.720207][ T8054] IPVS: ftp: loaded support on port[0] = 21 [ 54.799231][ T8056] IPVS: ftp: loaded support on port[0] = 21 08:49:08 executing program 2: sendmsg$nl_route_sched(0xffffffffffffffff, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000002800)=ANY=[@ANYBLOB="280000003200015819aad2020095c9d70000000014000100100001000800030000000000000000001f86289731ad1d41a85747df905755"], 0x28}}, 0x0) r0 = socket(0x6000000000010, 0x3, 0x0) socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000180)={0xffffffffffffffff, 0xffffffffffffffff}) r2 = dup(r1) ioctl$PERF_EVENT_IOC_ENABLE(r2, 0x8912, 0x400200) sendmmsg$alg(r0, &(0x7f0000000140), 0x492492492492778, 0x0) [ 54.925853][ T8054] chnl_net:caif_netlink_parms(): no params data found [ 54.955311][ T8056] chnl_net:caif_netlink_parms(): no params data found [ 55.067257][ T8054] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.074813][ T8054] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.082932][ T8054] device bridge_slave_0 entered promiscuous mode [ 55.102462][ T8056] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.113402][ T8060] IPVS: ftp: loaded support on port[0] = 21 [ 55.116436][ T8056] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.130307][ T8056] device bridge_slave_0 entered promiscuous mode [ 55.137961][ T8054] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.145009][ T8054] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.155581][ T8054] device bridge_slave_1 entered promiscuous mode [ 55.173111][ T8056] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.181237][ T8056] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.191223][ T8056] device bridge_slave_1 entered promiscuous mode [ 55.212122][ T8054] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link 08:49:08 executing program 3: bpf$PROG_LOAD(0x5, &(0x7f000000e000)={0x1, 0x4, &(0x7f0000000040)=@framed={{0xffffffb4, 0x5, 0x0, 0x0, 0x0, 0x61, 0x10, 0x18}, [@ldst={0x6, 0x0, 0x3f9, 0x5}]}, &(0x7f0000003ff6)='G\x00', 0x5, 0xfd90, &(0x7f000000cf3d)=""/195, 0x0, 0x0, [], 0x0, 0x0, 0xffffffffffffffff, 0x8, &(0x7f0000000000), 0x0, 0x10, &(0x7f0000000000), 0x1dd}, 0x48) [ 55.234395][ T8056] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 55.249096][ T8056] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 55.264438][ T8054] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 55.295929][ T8056] team0: Port device team_slave_0 added [ 55.326502][ T8056] team0: Port device team_slave_1 added [ 55.334866][ T8054] team0: Port device team_slave_0 added [ 55.362691][ T8054] team0: Port device team_slave_1 added [ 55.459870][ T8054] device hsr_slave_0 entered promiscuous mode 08:49:08 executing program 4: socketpair$unix(0x1, 0x3, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = socket$inet_udplite(0x2, 0x2, 0x88) getsockopt$inet_int(r1, 0x88, 0x1, &(0x7f00006ed000), &(0x7f00000000c0)=0x4) [ 55.508736][ T8054] device hsr_slave_1 entered promiscuous mode [ 55.582362][ T8062] IPVS: ftp: loaded support on port[0] = 21 [ 55.621153][ T8056] device hsr_slave_0 entered promiscuous mode [ 55.676617][ T8056] device hsr_slave_1 entered promiscuous mode [ 55.706471][ T8056] debugfs: Directory 'hsr0' with parent '/' already present! 08:49:08 executing program 5: r0 = bpf$MAP_CREATE(0x0, &(0x7f00000002c0)={0xb, 0x6, 0x209e20, 0x2, 0x1}, 0x2c) setsockopt$IP_VS_SO_SET_TIMEOUT(0xffffffffffffffff, 0x0, 0x48a, &(0x7f0000000300)={0x4}, 0xc) socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000180)={0xffffffffffffffff, 0xffffffffffffffff}) r2 = dup(r1) ioctl$PERF_EVENT_IOC_ENABLE(r2, 0x8912, 0x400200) bpf$MAP_UPDATE_ELEM(0x2, &(0x7f0000000b40)={r0, &(0x7f0000000300)}, 0x20) bpf$MAP_LOOKUP_ELEM(0x2, &(0x7f0000000040)={r0, &(0x7f0000000000), &(0x7f0000000140)=""/130}, 0x18) bpf$MAP_LOOKUP_ELEM(0x1, &(0x7f0000000200)={r0, &(0x7f0000000440)="bfecfadd68", &(0x7f0000000540)=""/203}, 0x18) [ 55.744079][ T8064] IPVS: ftp: loaded support on port[0] = 21 [ 55.863388][ T8054] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 55.930537][ T8054] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 55.980478][ T8054] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 56.040300][ T8054] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 56.091378][ T8060] chnl_net:caif_netlink_parms(): no params data found [ 56.100969][ T8056] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 56.149460][ T8056] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 56.219114][ T8056] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 56.259613][ T8056] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 56.311782][ T8067] IPVS: ftp: loaded support on port[0] = 21 [ 56.359802][ T8060] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.368121][ T8060] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.375992][ T8060] device bridge_slave_0 entered promiscuous mode [ 56.385362][ T8060] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.392723][ T8060] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.400373][ T8060] device bridge_slave_1 entered promiscuous mode [ 56.455444][ T8062] chnl_net:caif_netlink_parms(): no params data found [ 56.481079][ T8060] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.522636][ T8054] 8021q: adding VLAN 0 to HW filter on device bond0 [ 56.530889][ T8060] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.548588][ T8064] chnl_net:caif_netlink_parms(): no params data found [ 56.584312][ T8060] team0: Port device team_slave_0 added [ 56.590914][ T8062] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.598206][ T8062] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.605670][ T8062] device bridge_slave_0 entered promiscuous mode [ 56.625517][ T8060] team0: Port device team_slave_1 added [ 56.633913][ T8062] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.642004][ T8062] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.649679][ T8062] device bridge_slave_1 entered promiscuous mode [ 56.662519][ T8054] 8021q: adding VLAN 0 to HW filter on device team0 [ 56.670842][ T1078] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 56.679269][ T1078] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 56.739333][ T8060] device hsr_slave_0 entered promiscuous mode [ 56.796758][ T8060] device hsr_slave_1 entered promiscuous mode [ 56.836545][ T8060] debugfs: Directory 'hsr0' with parent '/' already present! [ 56.881861][ T8062] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.914244][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 56.922786][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 56.931467][ T47] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.938673][ T47] bridge0: port 1(bridge_slave_0) entered forwarding state [ 56.948524][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 56.956606][ T8064] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.963734][ T8064] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.973064][ T8064] device bridge_slave_0 entered promiscuous mode [ 56.981296][ T8062] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.009190][ T8062] team0: Port device team_slave_0 added [ 57.019621][ T8064] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.027499][ T8064] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.034991][ T8064] device bridge_slave_1 entered promiscuous mode [ 57.042840][ T3074] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 57.052607][ T3074] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 57.061131][ T3074] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.068190][ T3074] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.075616][ T3074] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 57.090916][ T8067] chnl_net:caif_netlink_parms(): no params data found [ 57.106218][ T8062] team0: Port device team_slave_1 added [ 57.114481][ T8056] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.131827][ T8071] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 57.142064][ T8071] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 57.150771][ T8071] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 57.159340][ T8071] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 57.167010][ T8071] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.174968][ T8071] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 57.200513][ T8064] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.234001][ T8056] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.241927][ T8060] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 57.308109][ T1078] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 57.317671][ T1078] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 57.325855][ T1078] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 57.334247][ T1078] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 57.343021][ T1078] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 57.351581][ T1078] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 57.361175][ T8064] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.408985][ T8062] device hsr_slave_0 entered promiscuous mode [ 57.446702][ T8062] device hsr_slave_1 entered promiscuous mode [ 57.508170][ T8062] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.520450][ T8060] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 57.593757][ T8054] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 57.624278][ T8064] team0: Port device team_slave_0 added [ 57.633441][ T8064] team0: Port device team_slave_1 added [ 57.644538][ T8060] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 57.679223][ T8071] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 57.688075][ T8071] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 57.696399][ T8071] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.703443][ T8071] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.711693][ T8071] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 57.720208][ T8071] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 57.728766][ T8071] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.735793][ T8071] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.744886][ T8071] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 57.752919][ T8067] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.760021][ T8067] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.767889][ T8067] device bridge_slave_0 entered promiscuous mode [ 57.830859][ T8064] device hsr_slave_0 entered promiscuous mode [ 57.897173][ T8064] device hsr_slave_1 entered promiscuous mode [ 57.966525][ T8064] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.975398][ T8060] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 58.042620][ T8067] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.049795][ T8067] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.058053][ T8067] device bridge_slave_1 entered promiscuous mode [ 58.069248][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 58.077216][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 58.084588][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 58.114987][ T8054] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 58.139690][ T3074] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 58.148236][ T3074] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 58.158654][ T3074] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 58.167452][ T3074] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 58.175902][ T3074] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 58.185486][ T3074] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 58.193532][ T3074] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 58.202028][ T3074] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 58.227963][ T8067] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.239120][ T8067] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.248545][ T8062] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 58.281390][ T8062] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 58.345500][ T8062] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 58.403223][ T8062] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 58.461105][ T8056] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 58.477848][ T8056] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 58.509381][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 58.528305][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 163.526314][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 163.533306][ C0] (detected by 0, t=10502 jiffies, g=5805, q=110) [ 163.539792][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294953508-4294943005), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 163.553132][ C0] syz-executor.0 R running task 27896 8076 8054 0x0000400e [ 163.561027][ C0] Call Trace: [ 163.564301][ C0] [ 163.567149][ C0] sched_show_task+0x40f/0x560 [ 163.571909][ C0] rcu_sched_clock_irq+0x1861/0x1ad0 [ 163.577191][ C0] update_process_times+0x12d/0x180 [ 163.582378][ C0] tick_sched_timer+0x263/0x420 [ 163.587215][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 163.592747][ C0] __hrtimer_run_queues+0x403/0x840 [ 163.597950][ C0] hrtimer_interrupt+0x38c/0xda0 [ 163.602890][ C0] ? debug_smp_processor_id+0x9/0x20 [ 163.608166][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 163.613697][ C0] apic_timer_interrupt+0xf/0x20 [ 163.618617][ C0] [ 163.621546][ C0] RIP: 0010:free_thread_stack+0x151/0x590 [ 163.627253][ C0] Code: 31 f6 e8 a2 a1 6e 00 43 80 3c 2e 00 74 08 4c 89 e7 e8 43 a0 69 00 49 8b 1c 24 48 83 c3 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 <74> 08 48 89 df e8 25 a0 69 00 48 8b 3b be fc ff ff ff e8 28 04 00 [ 163.646843][ C0] RSP: 0018:ffffc90002417848 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 163.655239][ C0] RAX: 1ffff1100d847491 RBX: ffff88806c23a488 RCX: 0000000000000000 [ 163.663195][ C0] RDX: ffffc90001eb9000 RSI: 0000000000000000 RDI: ffffea0001b09580 [ 163.671153][ C0] RBP: ffffc90002417880 R08: dffffc0000000000 R09: fffffbfff1287a8d [ 163.679111][ C0] R10: fffffbfff1287a8d R11: 0000000000000000 R12: ffff88806c23a520 [ 163.687069][ C0] R13: dffffc0000000000 R14: 1ffff1100d8474a4 R15: ffff888094f276e8 [ 163.695043][ C0] ? free_thread_stack+0x12e/0x590 [ 163.700143][ C0] put_task_stack+0xa3/0x130 [ 163.704720][ C0] finish_task_switch+0x3f1/0x550 [ 163.709734][ C0] __schedule+0x9a8/0xcc0 [ 163.714058][ C0] schedule+0x181/0x210 [ 163.718203][ C0] futex_wait_queue_me+0x2a3/0x4b0 [ 163.723306][ C0] futex_wait+0x252/0x770 [ 163.727646][ C0] do_futex+0x437/0x3d60 [ 163.731878][ C0] ? __lock_acquire+0xc75/0x1be0 [ 163.736832][ C0] ? tty_set_ldisc+0x128/0x8d0 [ 163.741583][ C0] ? __might_fault+0xf9/0x160 [ 163.746253][ C0] ? __might_fault+0xf9/0x160 [ 163.750925][ C0] ? check_preemption_disabled+0xb4/0x260 [ 163.756632][ C0] ? debug_smp_processor_id+0x9/0x20 [ 163.761916][ C0] __se_sys_futex+0x28c/0x360 [ 163.766584][ C0] ? prepare_exit_to_usermode+0x221/0x5b0 [ 163.772298][ C0] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 163.778001][ C0] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 163.783471][ C0] __x64_sys_futex+0xe5/0x100 [ 163.788160][ C0] do_syscall_64+0xf7/0x1c0 [ 163.792670][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 163.798550][ C0] RIP: 0033:0x45a679 [ 163.802434][ C0] Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 163.822044][ C0] RSP: 002b:00007f28cbe44cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 163.830450][ C0] RAX: ffffffffffffffda RBX: 000000000075bf28 RCX: 000000000045a679 [ 163.838409][ C0] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000075bf28 [ 163.846369][ C0] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 163.854326][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000075bf2c [ 163.862285][ C0] R13: 00007ffd3e94f0ff R14: 00007f28cbe459c0 R15: 000000000075bf2c [ 163.870267][ C0] rcu: rcu_preempt kthread starved for 10536 jiffies! g5805 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 163.881349][ C0] rcu: RCU grace-period kthread stack dump: [ 163.887224][ C0] rcu_preempt R running task 29032 10 2 0x80004000 [ 163.895109][ C0] Call Trace: [ 163.898393][ C0] __schedule+0x9a0/0xcc0 [ 163.902718][ C0] schedule+0x181/0x210 [ 163.906863][ C0] schedule_timeout+0x14f/0x240 [ 163.911700][ C0] ? run_local_timers+0x120/0x120 [ 163.916715][ C0] rcu_gp_kthread+0xed8/0x1770 [ 163.921473][ C0] kthread+0x332/0x350 [ 163.925525][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 163.930622][ C0] ? kthread_blkcg+0xe0/0xe0 [ 163.935198][ C0] ret_from_fork+0x24/0x30