[ 43.383547][ T23] audit: type=1800 audit(1575431475.052:27): pid=7960 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 43.383566][ T23] audit: type=1800 audit(1575431475.052:28): pid=7960 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. [ 44.109401][ T23] audit: type=1800 audit(1575431475.832:29): pid=7960 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 44.128654][ T23] audit: type=1800 audit(1575431475.832:30): pid=7960 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 '10.128.1.29' (ECDSA) to the list of known hosts. 2019/12/04 03:51:25 fuzzer started 2019/12/04 03:51:26 dialing manager at 10.128.0.26:42111 2019/12/04 03:51:26 syscalls: 2689 2019/12/04 03:51:26 code coverage: enabled 2019/12/04 03:51:26 comparison tracing: enabled 2019/12/04 03:51:26 extra coverage: extra coverage is not supported by the kernel 2019/12/04 03:51:26 setuid sandbox: enabled 2019/12/04 03:51:26 namespace sandbox: enabled 2019/12/04 03:51:26 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/04 03:51:26 fault injection: enabled 2019/12/04 03:51:26 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/04 03:51:26 net packet injection: enabled 2019/12/04 03:51:26 net device setup: enabled 2019/12/04 03:51:26 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/04 03:51:26 devlink PCI setup: PCI device 0000:00:10.0 is not available 03:51:27 executing program 0: openat$sequencer2(0xffffffffffffff9c, &(0x7f0000001440)='/dev/sequencer2\x00', 0x4001, 0x0) 03:51:27 executing program 1: mbind(&(0x7f0000001000/0x4000)=nil, 0x4000, 0x1, 0x0, 0x0, 0x0) syz_open_dev$vbi(&(0x7f0000000500)='/dev/vbi#\x00', 0x1, 0x2) getsockopt$inet6_IPV6_XFRM_POLICY(0xffffffffffffffff, 0x29, 0x23, 0x0, &(0x7f0000007640)) mbind(&(0x7f0000001000/0x4000)=nil, 0x4000, 0x0, 0x0, 0x0, 0x0) syzkaller login: [ 56.002071][ T8125] IPVS: ftp: loaded support on port[0] = 21 03:51:27 executing program 2: mmap(&(0x7f0000048000/0x1000)=nil, 0x1000, 0x6, 0x31, 0xffffffffffffffff, 0x0) futex(&(0x7f000000cffc)=0x4, 0xb, 0x4, &(0x7f000000b000), &(0x7f0000048000), 0x0) [ 56.159705][ T8125] chnl_net:caif_netlink_parms(): no params data found [ 56.170875][ T8128] IPVS: ftp: loaded support on port[0] = 21 [ 56.260815][ T8125] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.269423][ T8125] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.278111][ T8125] device bridge_slave_0 entered promiscuous mode [ 56.305232][ T8125] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.312746][ T8125] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.334786][ T8125] device bridge_slave_1 entered promiscuous mode [ 56.366169][ T8125] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.367073][ T8130] IPVS: ftp: loaded support on port[0] = 21 [ 56.395964][ T8125] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.461421][ T8128] chnl_net:caif_netlink_parms(): no params data found [ 56.478277][ T8125] team0: Port device team_slave_0 added [ 56.501079][ T8125] team0: Port device team_slave_1 added 03:51:28 executing program 3: r0 = socket$inet6(0xa, 0x2, 0x0) getsockopt$inet6_IPV6_FLOWLABEL_MGR(r0, 0x29, 0x4, 0x0, &(0x7f0000000280)) [ 56.597944][ T8125] device hsr_slave_0 entered promiscuous mode [ 56.664819][ T8125] device hsr_slave_1 entered promiscuous mode 03:51:28 executing program 4: socketpair$unix(0x1, 0x5, 0x0, &(0x7f00000000c0)={0xffffffffffffffff, 0xffffffffffffffff}) recvfrom$unix(r0, 0x0, 0x0, 0x40, 0x0, 0xfffffffffffffef7) [ 56.756816][ T8128] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.764129][ T8128] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.772508][ T8133] IPVS: ftp: loaded support on port[0] = 21 [ 56.797273][ T8128] device bridge_slave_0 entered promiscuous mode [ 56.878407][ T8128] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.896264][ T8128] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.904577][ T8128] device bridge_slave_1 entered promiscuous mode [ 56.929252][ T8130] chnl_net:caif_netlink_parms(): no params data found [ 56.967965][ T8125] netdevsim netdevsim0 netdevsim0: renamed from eth0 03:51:28 executing program 5: syz_open_procfs(0x0, 0x0) unshare(0x0) syz_open_dev$dmmidi(0x0, 0x0, 0x0) perf_event_open(&(0x7f00000000c0)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x41c1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3, 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, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) getsockopt$TIPC_GROUP_JOIN(0xffffffffffffffff, 0x10f, 0x87, 0x0, 0x0) setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, 0x0, 0x0) ptrace$getregs(0xe, 0x0, 0x0, &(0x7f00000005c0)=""/160) shmget$private(0x0, 0x3000, 0x0, &(0x7f0000ffa000/0x3000)=nil) shmat(0x0, &(0x7f0000ffc000/0x3000)=nil, 0xd48a5a656600d03e) getsockopt$inet_sctp_SCTP_STATUS(0xffffffffffffffff, 0x84, 0xe, &(0x7f0000000380)={0x0, 0x0, 0x4, 0x0, 0x1, 0x0, 0x0, 0x0, {0x0, @in={{0x2, 0x4e21, @broadcast}}, 0x0, 0x525, 0xbc}}, &(0x7f0000000440)=0xb0) ioctl$PPPIOCSDEBUG(0xffffffffffffffff, 0x40047440, 0x0) r0 = socket$nl_netfilter(0x10, 0x3, 0xc) r1 = dup3(0xffffffffffffffff, 0xffffffffffffffff, 0x0) getsockopt$inet_sctp_SCTP_GET_ASSOC_ID_LIST(0xffffffffffffffff, 0x84, 0x1d, 0x0, 0x0) getsockopt$inet_sctp6_SCTP_SOCKOPT_PEELOFF(r1, 0x84, 0x6c, &(0x7f000059aff8), &(0x7f000034f000)=0x8) ioctl$TUNSETLINK(r1, 0x400454cd, 0x7fff) ioctl$sock_ifreq(r0, 0x8991, &(0x7f00000000c0)={'bond0\x00\x16\b\xea\xff\xff\x80\x00\x06\x02\xff', @ifru_names='bond_slave_1\x00t\x00'}) [ 57.036498][ T8125] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 57.103249][ T8125] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 57.173298][ T8128] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.184122][ T8128] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.198655][ T8125] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 57.272329][ T8136] IPVS: ftp: loaded support on port[0] = 21 [ 57.285423][ T8130] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.292526][ T8130] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.300468][ T8130] device bridge_slave_0 entered promiscuous mode [ 57.311862][ T8130] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.319171][ T8130] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.327049][ T8130] device bridge_slave_1 entered promiscuous mode [ 57.347612][ T8138] IPVS: ftp: loaded support on port[0] = 21 [ 57.389351][ T8128] team0: Port device team_slave_0 added [ 57.401067][ T8130] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.413167][ T8130] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.427813][ T8128] team0: Port device team_slave_1 added [ 57.460541][ T8130] team0: Port device team_slave_0 added [ 57.506944][ T8128] device hsr_slave_0 entered promiscuous mode [ 57.554637][ T8128] device hsr_slave_1 entered promiscuous mode [ 57.614386][ T8128] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.623296][ T8130] team0: Port device team_slave_1 added [ 57.686111][ T8130] device hsr_slave_0 entered promiscuous mode [ 57.734699][ T8130] device hsr_slave_1 entered promiscuous mode [ 57.804347][ T8130] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.836014][ T8125] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.850863][ T8125] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.870711][ T8133] chnl_net:caif_netlink_parms(): no params data found [ 57.888083][ T3791] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 57.896459][ T3791] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.947578][ T3782] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 57.956359][ T3782] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 57.966923][ T3782] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.974397][ T3782] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.982575][ T3782] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 57.992024][ T3782] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.000740][ T3782] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.007815][ T3782] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.041190][ T8128] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 58.099811][ T8128] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 58.157424][ T8128] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 58.216041][ T3782] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 58.225838][ T3782] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 58.236993][ T8136] chnl_net:caif_netlink_parms(): no params data found [ 58.256952][ T8133] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.264090][ T8133] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.272347][ T8133] device bridge_slave_0 entered promiscuous mode [ 58.280099][ T8133] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.287314][ T8133] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.295251][ T8133] device bridge_slave_1 entered promiscuous mode [ 58.302094][ T8128] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 58.398918][ T8130] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 58.455879][ T8130] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 58.508351][ T2838] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 58.517452][ T2838] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 58.526185][ T2838] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 58.534713][ T2838] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 58.543085][ T2838] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 58.551462][ T2838] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 58.560760][ T2838] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 58.573096][ T2838] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 58.589674][ T8130] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 58.656177][ T8138] chnl_net:caif_netlink_parms(): no params data found [ 58.681099][ T8133] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.690956][ T8130] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 58.720985][ T3782] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 58.729455][ T3782] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 58.737832][ T8136] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.745542][ T8136] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.753084][ T8136] device bridge_slave_0 entered promiscuous mode [ 58.761194][ T8136] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.768765][ T8136] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.776672][ T8136] device bridge_slave_1 entered promiscuous mode [ 58.789978][ T8125] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 58.798798][ T8133] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.820088][ T8133] team0: Port device team_slave_0 added [ 58.827846][ T8133] team0: Port device team_slave_1 added [ 58.853291][ T8136] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.868932][ T8136] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.916622][ T8133] device hsr_slave_0 entered promiscuous mode [ 58.964768][ T8133] device hsr_slave_1 entered promiscuous mode [ 59.015031][ T8133] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.054144][ T8138] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.062389][ T8138] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.070620][ T8138] device bridge_slave_0 entered promiscuous mode [ 59.084844][ T8136] team0: Port device team_slave_0 added [ 59.092696][ T8136] team0: Port device team_slave_1 added [ 59.104010][ T8138] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.112745][ T8138] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.120621][ T8138] device bridge_slave_1 entered promiscuous mode [ 59.196460][ T8136] device hsr_slave_0 entered promiscuous mode [ 59.234662][ T8136] device hsr_slave_1 entered promiscuous mode [ 59.284391][ T8136] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.299102][ T8138] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.322077][ T3782] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 59.329782][ T3782] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 59.351393][ T8138] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.376454][ T8138] team0: Port device team_slave_0 added [ 59.393485][ T8133] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 59.426586][ T8133] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 59.469545][ T8138] team0: Port device team_slave_1 added [ 59.476670][ T8125] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 59.497302][ T8133] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 59.549440][ T8128] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.558496][ T8136] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 59.596033][ T8136] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 59.646583][ T8133] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 59.748584][ T8138] device hsr_slave_0 entered promiscuous mode [ 59.794783][ T8138] device hsr_slave_1 entered promiscuous mode [ 59.884450][ T8138] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.896753][ T8136] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 59.946449][ T8136] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 59.999945][ T8128] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.052142][ T2838] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.059869][ T2838] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.111901][ T2838] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 60.130521][ T2838] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 165.144222][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 165.151233][ C1] (detected by 1, t=10502 jiffies, g=6333, q=27) [ 165.157631][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294953650-4294943147), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 165.171163][ C1] syz-executor.0 R running task 27160 8146 8125 0x0000400e [ 165.179065][ C1] Call Trace: [ 165.182335][ C1] [ 165.185180][ C1] sched_show_task+0x40f/0x560 [ 165.189943][ C1] rcu_sched_clock_irq+0x1861/0x1ad0 [ 165.195309][ C1] update_process_times+0x12d/0x180 [ 165.200498][ C1] tick_sched_timer+0x263/0x420 [ 165.205336][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 165.210870][ C1] __hrtimer_run_queues+0x403/0x840 [ 165.216070][ C1] hrtimer_interrupt+0x38c/0xda0 [ 165.221024][ C1] ? debug_smp_processor_id+0x9/0x20 [ 165.226300][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 165.231831][ C1] apic_timer_interrupt+0xf/0x20 [ 165.236761][ C1] [ 165.239688][ C1] RIP: 0010:__sanitizer_cov_trace_pc+0x48/0x50 [ 165.245826][ C1] 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 [ 165.265423][ C1] RSP: 0018:ffffc900023c7858 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 165.273819][ C1] RAX: ffffffff81486ea4 RBX: ffffea000249b840 RCX: 0000000000040000 [ 165.281777][ C1] RDX: ffffc90001f39000 RSI: 000000000003ffff RDI: 0000000000040000 [ 165.289734][ C1] RBP: ffffc900023c7898 R08: dffffc0000000000 R09: fffffbfff12877ed [ 165.297695][ C1] R10: fffffbfff12877ed R11: 0000000000000000 R12: ffff8880a508fba0 [ 165.305654][ C1] R13: dffffc0000000000 R14: 1ffff11014a11f74 R15: ffff8880992eb728 [ 165.313625][ C1] ? free_thread_stack+0x124/0x590 [ 165.318726][ C1] ? free_thread_stack+0x124/0x590 [ 165.323826][ C1] put_task_stack+0xa3/0x130 [ 165.328401][ C1] finish_task_switch+0x3f1/0x550 [ 165.333416][ C1] __schedule+0x9a8/0xcc0 [ 165.337742][ C1] ? ___preempt_schedule+0x16/0x18 [ 165.342839][ C1] preempt_schedule+0xdb/0x120 [ 165.347588][ C1] ___preempt_schedule+0x16/0x18 [ 165.352515][ C1] try_to_wake_up+0xe78/0x1050 [ 165.357277][ C1] wake_up_q+0x8c/0xe0 [ 165.361346][ C1] futex_wake+0x51c/0x6f0 [ 165.365668][ C1] do_futex+0x3f5/0x3d60 [ 165.369904][ C1] ? __lock_acquire+0xc75/0x1be0 [ 165.374840][ C1] ? trace_hardirqs_on+0x74/0x80 [ 165.379766][ C1] ? task_work_run+0x139/0x1b0 [ 165.384516][ C1] ? __might_fault+0xf9/0x160 [ 165.389202][ C1] ? __might_fault+0xf9/0x160 [ 165.393866][ C1] ? check_preemption_disabled+0xb4/0x260 [ 165.399569][ C1] ? debug_smp_processor_id+0x9/0x20 [ 165.404844][ C1] __se_sys_futex+0x28c/0x360 [ 165.409508][ C1] ? prepare_exit_to_usermode+0x221/0x5b0 [ 165.415213][ C1] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 165.421024][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 165.426502][ C1] __x64_sys_futex+0xe5/0x100 [ 165.431179][ C1] do_syscall_64+0xf7/0x1c0 [ 165.435672][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 165.441550][ C1] RIP: 0033:0x45a679 [ 165.445430][ C1] 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 [ 165.465023][ C1] RSP: 002b:00007f484799acf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 165.473420][ C1] RAX: ffffffffffffffda RBX: 000000000075bf28 RCX: 000000000045a679 [ 165.481374][ C1] RDX: 00000000004c80b3 RSI: 0000000000000081 RDI: 000000000075bf2c [ 165.489330][ C1] RBP: 000000000075bf20 R08: 0000000000000016 R09: 0000000000000000 [ 165.497289][ C1] R10: ffffffffffffffff R11: 0000000000000246 R12: 000000000075bf2c [ 165.505253][ C1] R13: 00007ffc8040b8cf R14: 00007f484799b9c0 R15: 000000000075bf2c [ 165.513229][ C1] rcu: rcu_preempt kthread starved for 10538 jiffies! g6333 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 165.524311][ C1] rcu: RCU grace-period kthread stack dump: [ 165.530181][ C1] rcu_preempt R running task 29032 10 2 0x80004000 [ 165.538081][ C1] Call Trace: [ 165.541363][ C1] __schedule+0x9a0/0xcc0 [ 165.545690][ C1] schedule+0x181/0x210 [ 165.549831][ C1] schedule_timeout+0x14f/0x240 [ 165.554666][ C1] ? run_local_timers+0x120/0x120 [ 165.559678][ C1] rcu_gp_kthread+0xed8/0x1770 [ 165.564433][ C1] kthread+0x332/0x350 [ 165.568488][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 165.573583][ C1] ? kthread_blkcg+0xe0/0xe0 [ 165.578162][ C1] ret_from_fork+0x24/0x30