[ 42.528518][ T26] audit: type=1800 audit(1575432534.767:26): pid=8003 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 42.553868][ T26] audit: type=1800 audit(1575432534.777:27): pid=8003 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 42.602666][ T26] audit: type=1800 audit(1575432534.777:28): pid=8003 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. [ 43.078135][ T26] audit: type=1800 audit(1575432535.347:29): pid=8003 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 '10.128.0.12' (ECDSA) to the list of known hosts. 2019/12/04 04:09:05 fuzzer started 2019/12/04 04:09:07 dialing manager at 10.128.0.26:42111 2019/12/04 04:09:07 syscalls: 2689 2019/12/04 04:09:07 code coverage: enabled 2019/12/04 04:09:07 comparison tracing: enabled 2019/12/04 04:09:07 extra coverage: extra coverage is not supported by the kernel 2019/12/04 04:09:07 setuid sandbox: enabled 2019/12/04 04:09:07 namespace sandbox: enabled 2019/12/04 04:09:07 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/04 04:09:07 fault injection: enabled 2019/12/04 04:09:07 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/04 04:09:07 net packet injection: enabled 2019/12/04 04:09:07 net device setup: enabled 2019/12/04 04:09:07 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/04 04:09:07 devlink PCI setup: PCI device 0000:00:10.0 is not available 04:09:08 executing program 0: r0 = socket$inet6_sctp(0xa, 0x10000000005, 0x84) setsockopt$inet6_int(r0, 0x29, 0x48, &(0x7f0000003d00)=0xf9c, 0x4) 04:09:08 executing program 1: perf_event_open(&(0x7f000001d000)={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_config_ext}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) pipe(&(0x7f0000000080)) move_pages(0x0, 0x0, &(0x7f0000000300), 0x0, 0x0, 0x0) socket$inet(0x2, 0x4000000805, 0x0) socket$inet_sctp(0x2, 0x5, 0x84) getsockopt$inet_sctp6_SCTP_SOCKOPT_PEELOFF(0xffffffffffffffff, 0x84, 0x7a, 0x0, 0x0) r0 = socket(0x1e, 0x2, 0x0) setsockopt$packet_tx_ring(r0, 0x10f, 0x87, &(0x7f0000000080)=@req={0x3fc}, 0xff37) r1 = socket(0x1e, 0x4, 0x0) setsockopt$packet_tx_ring(r1, 0x10f, 0x87, &(0x7f0000265000)=@req={0x3fc, 0x0, 0x2}, 0x10) sendmmsg(r1, &(0x7f0000000a40), 0x8000000000000b0, 0x101d0) syzkaller login: [ 55.960138][ T8166] IPVS: ftp: loaded support on port[0] = 21 04:09:08 executing program 2: r0 = socket$nl_netfilter(0x10, 0x3, 0xc) ioctl$sock_ifreq(r0, 0x8947, &(0x7f00000000c0)={'bond0\x00\x16\b\xea\xff\xff\x80\x00\x06\x02\xff', @ifru_names='bond_slave_1\x00t\x00'}) [ 56.141571][ T8169] IPVS: ftp: loaded support on port[0] = 21 [ 56.144803][ T8166] chnl_net:caif_netlink_parms(): no params data found [ 56.194548][ T8166] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.202971][ T8166] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.211346][ T8166] device bridge_slave_0 entered promiscuous mode [ 56.230020][ T8166] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.245964][ T8166] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.269357][ T8166] device bridge_slave_1 entered promiscuous mode [ 56.315854][ T8171] IPVS: ftp: loaded support on port[0] = 21 [ 56.333963][ T8166] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.364718][ T8166] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.431767][ T8166] team0: Port device team_slave_0 added [ 56.437689][ T8169] chnl_net:caif_netlink_parms(): no params data found [ 56.468112][ T8166] team0: Port device team_slave_1 added 04:09:08 executing program 3: r0 = gettid() capset(&(0x7f00000000c0)={0x19980330, r0}, &(0x7f0000000140)) [ 56.561130][ T8166] device hsr_slave_0 entered promiscuous mode [ 56.598753][ T8166] device hsr_slave_1 entered promiscuous mode 04:09:09 executing program 4: r0 = openat$rdma_cm(0xffffffffffffff9c, &(0x7f0000000040)='/dev/infiniband/rdma_cm\x00', 0x2, 0x0) write$RDMA_USER_CM_CMD_CREATE_ID(r0, &(0x7f0000000340)={0x0, 0x18, 0xfa00, {0x0, &(0x7f0000000000)={0xffffffffffffffff}, 0x106}}, 0x20) write$RDMA_USER_CM_CMD_LISTEN(r0, &(0x7f0000000240)={0x7, 0x8, 0xfa00, {r1}}, 0x10) [ 56.677731][ T8174] IPVS: ftp: loaded support on port[0] = 21 [ 56.687653][ T8169] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.697140][ T8169] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.710368][ T8169] device bridge_slave_0 entered promiscuous mode [ 56.762994][ T8169] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.771938][ T8169] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.795204][ T8169] device bridge_slave_1 entered promiscuous mode [ 56.853942][ T8166] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 56.942641][ T8177] IPVS: ftp: loaded support on port[0] = 21 [ 56.948946][ T8166] netdevsim netdevsim0 netdevsim1: renamed from eth1 04:09:09 executing program 5: ioprio_set$pid(0x2, 0xffffffffffffffff, 0x0) [ 56.992770][ T8169] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.009072][ T8166] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 57.110632][ T8166] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 57.170926][ T8171] chnl_net:caif_netlink_parms(): no params data found [ 57.181514][ T8169] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.208214][ T8179] IPVS: ftp: loaded support on port[0] = 21 [ 57.241913][ T8169] team0: Port device team_slave_0 added [ 57.281557][ T8174] chnl_net:caif_netlink_parms(): no params data found [ 57.295222][ T8169] team0: Port device team_slave_1 added [ 57.401383][ T8169] device hsr_slave_0 entered promiscuous mode [ 57.439450][ T8169] device hsr_slave_1 entered promiscuous mode [ 57.488596][ T8169] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.506690][ T8171] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.514828][ T8171] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.524097][ T8171] device bridge_slave_0 entered promiscuous mode [ 57.537059][ T8171] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.544497][ T8171] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.552222][ T8171] device bridge_slave_1 entered promiscuous mode [ 57.575419][ T8171] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.589364][ T8174] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.596429][ T8174] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.605745][ T8174] device bridge_slave_0 entered promiscuous mode [ 57.617069][ T8174] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.624784][ T8174] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.633085][ T8174] device bridge_slave_1 entered promiscuous mode [ 57.656230][ T8171] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.675575][ T8174] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.687530][ T8174] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.718593][ T8174] team0: Port device team_slave_0 added [ 57.733281][ T8171] team0: Port device team_slave_0 added [ 57.742375][ T8174] team0: Port device team_slave_1 added [ 57.777396][ T8169] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 57.801629][ T8171] team0: Port device team_slave_1 added [ 57.807357][ T8169] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 57.862093][ T8169] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 57.913005][ T8169] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 58.010338][ T8174] device hsr_slave_0 entered promiscuous mode [ 58.058981][ T8174] device hsr_slave_1 entered promiscuous mode [ 58.118618][ T8174] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.211014][ T8171] device hsr_slave_0 entered promiscuous mode [ 58.259142][ T8171] device hsr_slave_1 entered promiscuous mode [ 58.298637][ T8171] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.310444][ T8177] chnl_net:caif_netlink_parms(): no params data found [ 58.329449][ T8179] chnl_net:caif_netlink_parms(): no params data found [ 58.384646][ T8166] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.424360][ T8177] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.433909][ T8177] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.441922][ T8177] device bridge_slave_0 entered promiscuous mode [ 58.450330][ T8177] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.457386][ T8177] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.465406][ T8177] device bridge_slave_1 entered promiscuous mode [ 58.490291][ T8179] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.497375][ T8179] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.508251][ T8179] device bridge_slave_0 entered promiscuous mode [ 58.516310][ T8171] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 58.554218][ T8174] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 58.610730][ T8174] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 58.651288][ T8179] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.658637][ T8179] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.666471][ T8179] device bridge_slave_1 entered promiscuous mode [ 58.675351][ T8177] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.685760][ T8171] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 58.752097][ T8171] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 58.801516][ T8171] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 58.861385][ T8174] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 58.901454][ T8174] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 58.955455][ T8177] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.981766][ T8177] team0: Port device team_slave_0 added [ 58.989847][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 58.998149][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.009660][ T8166] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.030575][ T8179] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.044481][ T8179] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.055520][ T8177] team0: Port device team_slave_1 added [ 59.080715][ T3207] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 59.092218][ T3207] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.102687][ T3207] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.110070][ T3207] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.118283][ T3207] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 59.127360][ T3207] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.136581][ T3207] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.143764][ T3207] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.151902][ T3207] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 59.211462][ T8177] device hsr_slave_0 entered promiscuous mode [ 59.248999][ T8177] device hsr_slave_1 entered promiscuous mode [ 59.288818][ T8177] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.320441][ T8169] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.332282][ T8179] team0: Port device team_slave_0 added [ 59.342744][ T8179] team0: Port device team_slave_1 added [ 59.351510][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 59.360361][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 59.370720][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 59.379641][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 59.387891][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 59.397197][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 59.406098][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 59.414798][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 59.426864][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 59.451105][ T8166] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 59.462373][ T8166] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 59.533181][ T8179] device hsr_slave_0 entered promiscuous mode [ 59.589362][ T8179] device hsr_slave_1 entered promiscuous mode [ 59.628701][ T8179] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.641328][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 59.654990][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 59.663758][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 59.674392][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.685296][ T8169] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.706909][ T8177] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 59.771753][ T8177] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 59.831350][ T8177] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 59.902206][ T8177] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 59.970717][ T8166] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 59.980559][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 59.989267][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.998110][ T3763] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.005246][ T3763] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.013342][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 60.022741][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.031457][ T3763] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.038588][ T3763] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.046256][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 60.054682][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 60.063189][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 60.095122][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 60.104948][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 60.115403][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 60.124806][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 60.133653][ T3763] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 60.157902][ T3765] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 60.167094][ T3765] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 60.194228][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 60.203261][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 60.215019][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 60.223870][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 60.242145][ T8169] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 60.277448][ T8174] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.292717][ T8179] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 60.336967][ T8174] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.352759][ T8171] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.374171][ T8179] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 165.338373][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 165.345378][ C1] (detected by 1, t=10502 jiffies, g=6249, q=302) [ 165.351871][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294953668-4294943165), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 165.365214][ C1] syz-executor.0 R running task 29032 8187 8166 0x0000400e [ 165.373105][ C1] Call Trace: [ 165.376378][ C1] [ 165.379258][ C1] sched_show_task+0x40f/0x560 [ 165.384138][ C1] rcu_sched_clock_irq+0x1861/0x1ad0 [ 165.389775][ C1] update_process_times+0x12d/0x180 [ 165.394964][ C1] tick_sched_timer+0x263/0x420 [ 165.399809][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 165.405342][ C1] __hrtimer_run_queues+0x403/0x840 [ 165.410544][ C1] hrtimer_interrupt+0x38c/0xda0 [ 165.415754][ C1] ? debug_smp_processor_id+0x9/0x20 [ 165.421032][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 165.426586][ C1] apic_timer_interrupt+0xf/0x20 [ 165.431604][ C1] [ 165.434544][ C1] RIP: 0010:__sanitizer_cov_trace_pc+0x22/0x50 [ 165.440691][ C1] Code: 64 02 3b 00 5b 5d c3 cc 48 8b 04 24 65 48 8b 0c 25 c0 1d 02 00 65 8b 15 b8 81 8b 7e f7 c2 00 01 1f 00 75 2c 8b 91 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 [ 165.460282][ C1] RSP: 0018:ffffc90002607840 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 165.468679][ C1] RAX: ffffffff81486ea4 RBX: ffffea0002541b00 RCX: ffff88808cfdc040 [ 165.476634][ C1] RDX: 0000000000000002 RSI: 000000000003ffff RDI: 0000000000040000 [ 165.484591][ C1] RBP: ffffc90002607880 R08: dffffc0000000000 R09: fffffbfff12877ed [ 165.492553][ C1] R10: fffffbfff12877ed R11: 0000000000000000 R12: ffff88809469d220 [ 165.500509][ C1] R13: dffffc0000000000 R14: 1ffff110128d3a44 R15: ffff8880951b5968 [ 165.508478][ C1] ? free_thread_stack+0x124/0x590 [ 165.513585][ C1] ? free_thread_stack+0x124/0x590 [ 165.518683][ C1] put_task_stack+0xa3/0x130 [ 165.523348][ C1] finish_task_switch+0x3f1/0x550 [ 165.528373][ C1] __schedule+0x9a8/0xcc0 [ 165.532701][ C1] schedule+0x181/0x210 [ 165.537541][ C1] futex_wait_queue_me+0x2a3/0x4b0 [ 165.542644][ C1] futex_wait+0x252/0x770 [ 165.546982][ C1] do_futex+0x437/0x3d60 [ 165.551221][ C1] ? __lock_acquire+0xc75/0x1be0 [ 165.556166][ C1] ? percpu_counter_add_batch+0x153/0x170 [ 165.561871][ C1] ? __might_fault+0xf9/0x160 [ 165.566554][ C1] ? __might_fault+0xf9/0x160 [ 165.571222][ C1] ? check_preemption_disabled+0xb4/0x260 [ 165.576925][ C1] ? debug_smp_processor_id+0x9/0x20 [ 165.582228][ C1] __se_sys_futex+0x28c/0x360 [ 165.586894][ C1] ? prepare_exit_to_usermode+0x221/0x5b0 [ 165.592617][ C1] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 165.598319][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 165.603769][ C1] __x64_sys_futex+0xe5/0x100 [ 165.608434][ C1] do_syscall_64+0xf7/0x1c0 [ 165.612934][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 165.618812][ C1] RIP: 0033:0x45a679 [ 165.622693][ 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 [ 165.642290][ C1] RSP: 002b:00007febe67a0cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 165.650684][ C1] RAX: ffffffffffffffda RBX: 000000000075bf28 RCX: 000000000045a679 [ 165.658641][ C1] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000075bf28 [ 165.666610][ C1] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 165.674579][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000075bf2c [ 165.682537][ C1] R13: 00007fffdac1dbbf R14: 00007febe67a19c0 R15: 000000000075bf2c [ 165.690514][ C1] rcu: rcu_preempt kthread starved for 10537 jiffies! g6249 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 165.701679][ C1] rcu: RCU grace-period kthread stack dump: [ 165.707558][ C1] rcu_preempt R running task 29032 10 2 0x80004008 [ 165.715445][ C1] Call Trace: [ 165.718724][ C1] __schedule+0x9a8/0xcc0 [ 165.723057][ C1] schedule+0x181/0x210 [ 165.727287][ C1] schedule_timeout+0x14f/0x240 [ 165.732124][ C1] ? run_local_timers+0x120/0x120 [ 165.737139][ C1] rcu_gp_kthread+0xed8/0x1770 [ 165.741897][ C1] kthread+0x332/0x350 [ 165.745951][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 165.751046][ C1] ? kthread_blkcg+0xe0/0xe0 [ 165.755621][ C1] ret_from_fork+0x24/0x30