[ 42.319805][ T25] audit: type=1800 audit(1575416893.629:26): pid=7980 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 42.368156][ T25] audit: type=1800 audit(1575416893.629:27): pid=7980 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 42.395697][ T25] audit: type=1800 audit(1575416893.639:28): pid=7980 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. [ 43.059187][ T25] audit: type=1800 audit(1575416894.399:29): pid=7980 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 '10.128.0.95' (ECDSA) to the list of known hosts. 2019/12/03 23:48:21 fuzzer started 2019/12/03 23:48:23 dialing manager at 10.128.0.26:42111 2019/12/03 23:48:23 syscalls: 2689 2019/12/03 23:48:23 code coverage: enabled 2019/12/03 23:48:23 comparison tracing: enabled 2019/12/03 23:48:23 extra coverage: extra coverage is not supported by the kernel 2019/12/03 23:48:23 setuid sandbox: enabled 2019/12/03 23:48:23 namespace sandbox: enabled 2019/12/03 23:48:23 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 23:48:23 fault injection: enabled 2019/12/03 23:48:23 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 23:48:23 net packet injection: enabled 2019/12/03 23:48:23 net device setup: enabled 2019/12/03 23:48:23 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 23:48:23 devlink PCI setup: PCI device 0000:00:10.0 is not available 23:48:24 executing program 0: r0 = memfd_create(&(0x7f0000000200)='eth0\x00', 0x0) write(r0, &(0x7f0000000040)="06", 0x1) mmap(&(0x7f0000000000/0x7000)=nil, 0x7000, 0x80000000004, 0x11, r0, 0x0) r1 = socket$inet_dccp(0x2, 0x6, 0x0) getsockopt$inet_int(r1, 0x10d, 0xb0, 0x0, &(0x7f0000000000)) syzkaller login: [ 53.052953][ T8148] IPVS: ftp: loaded support on port[0] = 21 23:48:24 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f00000004c0)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = fcntl$dupfd(r1, 0x0, r0) ioctl$KVM_CREATE_IRQCHIP(r2, 0xae60) r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r3, &(0x7f0000fe8000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) perf_event_open(&(0x7f00000001c0)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7f, 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) ioctl$KVM_SET_LAPIC(r3, 0x4400ae8f, &(0x7f00000000c0)={"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"}) ioctl$KVM_SET_MP_STATE(r3, 0x4004ae99, &(0x7f0000000000)=0x100005) ioctl$KVM_RUN(r3, 0xae80, 0x0) [ 53.186728][ T8148] chnl_net:caif_netlink_parms(): no params data found [ 53.270032][ T8148] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.277788][ T8148] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.287085][ T8148] device bridge_slave_0 entered promiscuous mode [ 53.296079][ T8148] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.304180][ T8148] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.312363][ T8148] device bridge_slave_1 entered promiscuous mode [ 53.328820][ T8151] IPVS: ftp: loaded support on port[0] = 21 [ 53.353300][ T8148] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 53.366849][ T8148] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link 23:48:24 executing program 2: r0 = gettid() r1 = inotify_init1(0x0) fcntl$setown(r1, 0x8, 0xffffffffffffffff) fcntl$getownex(r1, 0x10, &(0x7f00000004c0)={0x0, 0x0}) kcmp(r0, r2, 0x1, 0xffffffffffffffff, 0xffffffffffffffff) [ 53.393780][ T8148] team0: Port device team_slave_0 added [ 53.406223][ T8148] team0: Port device team_slave_1 added [ 53.471247][ T8148] device hsr_slave_0 entered promiscuous mode [ 53.499354][ T8148] device hsr_slave_1 entered promiscuous mode [ 53.583788][ T8153] IPVS: ftp: loaded support on port[0] = 21 23:48:25 executing program 3: r0 = socket(0x10, 0x2, 0x0) sendto(r0, &(0x7f00000003c0)="12000000a900e7ef007b1a3fcd000040e860", 0x12, 0x0, 0x0, 0x0) recvmmsg(r0, &(0x7f00000037c0)=[{{0x0, 0x0, &(0x7f0000000380)=[{&(0x7f0000000040)=""/95, 0x5f}], 0x1}}], 0x1, 0x0, 0x0) sendmsg(0xffffffffffffffff, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000600)}, 0x0) ioctl$TUNSETIFF(0xffffffffffffffff, 0x400454ca, &(0x7f0000000080)={'bcsh0\x00', 0x23}) socketpair(0x1, 0x5, 0x0, &(0x7f0000000740)={0xffffffffffffffff, 0xffffffffffffffff}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) r3 = dup(r2) ioctl$PERF_EVENT_IOC_ENABLE(r3, 0x8912, 0x400200) recvmmsg(0xffffffffffffffff, &(0x7f0000002c40)=[{{0x0, 0x172, &(0x7f0000000000)=[{0x0, 0xffffff63}, {0x0}, {0x0}, {&(0x7f0000000180)=""/114, 0xffffffffffffffee}], 0x4, 0x0, 0x206}}], 0x1, 0x0, 0x0) ioctl$PERF_EVENT_IOC_SET_FILTER(r1, 0x89f1, &(0x7f0000000080)='ip6tnl0\x00') [ 53.676717][ T8148] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 53.720104][ T8151] chnl_net:caif_netlink_parms(): no params data found [ 53.739606][ T8148] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 53.781565][ T8148] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 53.823806][ T8148] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 53.903681][ T8156] IPVS: ftp: loaded support on port[0] = 21 [ 53.942773][ T8148] bridge0: port 2(bridge_slave_1) entered blocking state 23:48:25 executing program 4: perf_event_open(&(0x7f000001d000)={0x0, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) r0 = socket$alg(0x26, 0x5, 0x0) bind$alg(r0, &(0x7f0000000000)={0x26, 'aead\x00', 0x0, 0x0, 'aegis128-generic\x00'}, 0x58) setsockopt$ALG_SET_KEY(r0, 0x117, 0x1, &(0x7f0000000080)="ab553fec94248c32e27d04000000288a", 0x10) r1 = accept$alg(r0, 0x0, 0x0) sendmsg$alg(r1, &(0x7f0000001380)={0x0, 0x0, 0x0, 0x0, &(0x7f00000000c0)=[@op={0x18, 0x117, 0x3, 0x1}, @assoc={0x18, 0x117, 0x4, 0x2f5}], 0x30}, 0x0) write$binfmt_script(r1, &(0x7f0000000600)=ANY=[], 0xfec8) recvmmsg(r1, &(0x7f0000007e00)=[{{&(0x7f0000001240)=@alg, 0x80, &(0x7f0000004700)=[{&(0x7f00000012c0)=""/167, 0xc}, {&(0x7f00000023c0)=""/49, 0x200023f1}, {&(0x7f0000003580)=""/4096, 0x1000}], 0x3, &(0x7f0000004780)=""/245, 0xf5}}], 0x30, 0x0, &(0x7f0000008000)={0x0, 0x989680}) [ 53.950044][ T8148] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.957878][ T8148] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.965022][ T8148] bridge0: port 1(bridge_slave_0) entered forwarding state [ 54.002620][ T8151] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.011335][ T8151] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.019377][ T8151] device bridge_slave_0 entered promiscuous mode [ 54.036808][ T8153] chnl_net:caif_netlink_parms(): no params data found [ 54.063816][ T8151] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.071804][ T8151] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.089077][ T8151] device bridge_slave_1 entered promiscuous mode [ 54.175246][ T8160] IPVS: ftp: loaded support on port[0] = 21 [ 54.184916][ T8151] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 54.216256][ T17] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.237396][ T17] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.253631][ T8151] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 54.269424][ T8153] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.276506][ T8153] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.293622][ T8153] device bridge_slave_0 entered promiscuous mode [ 54.302204][ T8153] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.312379][ T8153] bridge0: port 2(bridge_slave_1) entered disabled state 23:48:25 executing program 5: r0 = socket$key(0xf, 0x3, 0x2) sendmsg$key(r0, &(0x7f0000b6dfc8)={0x500, 0x0, &(0x7f0000000140)={&(0x7f0000000000)={0x2, 0x5, 0x0, 0x0, 0xe, 0x0, 0x0, 0x0, [@sadb_address={0x5, 0x6, 0x0, 0x0, 0x0, @in6={0xa, 0x0, 0x0, @ipv4={[0x300000000000000, 0x0, 0x0, 0x6000000, 0x0, 0x0, 0x6000000, 0x40030000000000], [], @initdev={0xac, 0x1e, 0x0, 0x0}}}}, @sadb_sa={0x2}, @sadb_address={0x5, 0x5, 0x0, 0x0, 0x0, @in6={0xa, 0x0, 0x0, @mcast2}}]}, 0x70}}, 0x0) [ 54.320466][ T8153] device bridge_slave_1 entered promiscuous mode [ 54.401247][ T8151] team0: Port device team_slave_0 added [ 54.422532][ T8153] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 54.436170][ T8156] chnl_net:caif_netlink_parms(): no params data found [ 54.451164][ T8151] team0: Port device team_slave_1 added [ 54.471071][ T8153] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 54.486940][ T8164] IPVS: ftp: loaded support on port[0] = 21 [ 54.540149][ T8148] 8021q: adding VLAN 0 to HW filter on device bond0 [ 54.556670][ T8153] team0: Port device team_slave_0 added [ 54.564715][ T8153] team0: Port device team_slave_1 added [ 54.600205][ T8151] device hsr_slave_0 entered promiscuous mode [ 54.638433][ T8151] device hsr_slave_1 entered promiscuous mode [ 54.678304][ T8151] debugfs: Directory 'hsr0' with parent '/' already present! [ 54.771105][ T8153] device hsr_slave_0 entered promiscuous mode [ 54.830922][ T8153] device hsr_slave_1 entered promiscuous mode [ 54.898276][ T8153] debugfs: Directory 'hsr0' with parent '/' already present! [ 54.909338][ T8160] chnl_net:caif_netlink_parms(): no params data found [ 54.921972][ T8156] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.929758][ T8156] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.937574][ T8156] device bridge_slave_0 entered promiscuous mode [ 54.945391][ T8156] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.952796][ T8156] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.960682][ T8156] device bridge_slave_1 entered promiscuous mode [ 54.980592][ T8148] 8021q: adding VLAN 0 to HW filter on device team0 [ 55.022932][ T3012] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 55.031886][ T3012] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 55.047729][ T8153] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 55.100834][ T8156] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 55.117114][ T8156] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 55.150291][ T8156] team0: Port device team_slave_0 added [ 55.156193][ T8153] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 55.214307][ T8153] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 55.271820][ T8153] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 55.333926][ T3012] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 55.343232][ T3012] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 55.352249][ T3012] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.359467][ T3012] bridge0: port 1(bridge_slave_0) entered forwarding state [ 55.369480][ T3012] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 55.378435][ T3012] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 55.386705][ T3012] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.393773][ T3012] bridge0: port 2(bridge_slave_1) entered forwarding state [ 55.403755][ T8156] team0: Port device team_slave_1 added [ 55.413229][ T8160] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.420498][ T8160] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.428505][ T8160] device bridge_slave_0 entered promiscuous mode [ 55.437404][ T8160] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.444784][ T8160] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.453014][ T8160] device bridge_slave_1 entered promiscuous mode [ 55.521484][ T8156] device hsr_slave_0 entered promiscuous mode [ 55.559988][ T8156] device hsr_slave_1 entered promiscuous mode [ 55.608448][ T8156] debugfs: Directory 'hsr0' with parent '/' already present! [ 55.621405][ T8166] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 55.630485][ T8166] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 55.639681][ T8151] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 55.690971][ T8151] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 55.730632][ T8151] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 55.785249][ T8160] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 55.796685][ T8160] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 55.809421][ T8159] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 55.818773][ T8159] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 55.827718][ T8159] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 55.839674][ T8151] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 55.896870][ T8160] team0: Port device team_slave_0 added [ 55.905044][ T8160] team0: Port device team_slave_1 added [ 55.917919][ T8159] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 55.927565][ T8159] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 55.947226][ T8148] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 55.962652][ T8148] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 55.987288][ T8167] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 55.996620][ T8167] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 56.005550][ T8167] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 56.013958][ T8167] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 56.023733][ T8167] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 56.090183][ T8160] device hsr_slave_0 entered promiscuous mode [ 56.138596][ T8160] device hsr_slave_1 entered promiscuous mode [ 56.178285][ T8160] debugfs: Directory 'hsr0' with parent '/' already present! [ 56.205437][ T8148] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 56.242010][ T8167] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 56.250280][ T8167] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 56.269025][ T8156] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 56.306823][ T8156] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 56.354318][ T8153] 8021q: adding VLAN 0 to HW filter on device bond0 [ 56.372858][ T8160] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 56.423425][ T8160] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 56.483042][ T8156] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 161.528075][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 161.535080][ C0] (detected by 0, t=10502 jiffies, g=5945, q=126) [ 161.541584][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294953278-4294942775), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 161.555456][ C0] syz-executor.0 R running task 29232 8172 8148 0x0000400e [ 161.563349][ C0] Call Trace: [ 161.566623][ C0] [ 161.569472][ C0] sched_show_task+0x40f/0x560 [ 161.574510][ C0] rcu_sched_clock_irq+0x1861/0x1ad0 [ 161.579795][ C0] update_process_times+0x12d/0x180 [ 161.584981][ C0] tick_sched_timer+0x263/0x420 [ 161.589818][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 161.595350][ C0] __hrtimer_run_queues+0x403/0x840 [ 161.600553][ C0] hrtimer_interrupt+0x38c/0xda0 [ 161.605492][ C0] ? debug_smp_processor_id+0x9/0x20 [ 161.610771][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 161.616305][ C0] apic_timer_interrupt+0xf/0x20 [ 161.622180][ C0] [ 161.625214][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x2e/0x50 [ 161.631554][ C0] Code: 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 13 00 00 48 39 cf 73 08 48 89 44 f2 [ 161.651176][ C0] RSP: 0018:ffffc900026e7858 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 161.659577][ C0] RAX: ffffffff81486ea4 RBX: ffffea0001b0d800 RCX: ffff88806b83a080 [ 161.667534][ C0] RDX: ffffc9000212a000 RSI: 000000000003ffff RDI: 0000000000040000 [ 161.675494][ C0] RBP: ffffc900026e7898 R08: 000000000003a768 R09: ffffed10150b9f3f [ 161.683456][ C0] R10: ffffed10150b9f3f R11: 0000000000000000 R12: ffff88808f2843a0 [ 161.691416][ C0] R13: dffffc0000000000 R14: 1ffff11011e50874 R15: ffff8880a85cf9e8 [ 161.699406][ C0] ? free_thread_stack+0x124/0x590 [ 161.704514][ C0] ? free_thread_stack+0x124/0x590 [ 161.709615][ C0] put_task_stack+0xa3/0x130 [ 161.714194][ C0] finish_task_switch+0x3f1/0x550 [ 161.719218][ C0] __schedule+0x9a8/0xcc0 [ 161.723541][ C0] ? ___preempt_schedule+0x16/0x18 [ 161.728639][ C0] preempt_schedule+0xdb/0x120 [ 161.733394][ C0] ___preempt_schedule+0x16/0x18 [ 161.738334][ C0] try_to_wake_up+0xe78/0x1050 [ 161.743096][ C0] wake_up_q+0x8c/0xe0 [ 161.747158][ C0] futex_wake+0x51c/0x6f0 [ 161.751483][ C0] do_futex+0x3f5/0x3d60 [ 161.755719][ C0] ? __lock_acquire+0xc75/0x1be0 [ 161.760660][ C0] ? retint_kernel+0x2b/0x2b [ 161.765240][ C0] ? __might_fault+0xf9/0x160 [ 161.770610][ C0] ? __might_fault+0xf9/0x160 [ 161.775276][ C0] ? check_preemption_disabled+0xb4/0x260 [ 161.781007][ C0] ? debug_smp_processor_id+0x9/0x20 [ 161.786299][ C0] __se_sys_futex+0x28c/0x360 [ 161.790987][ C0] ? prepare_exit_to_usermode+0x221/0x5b0 [ 161.796842][ C0] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 161.802588][ C0] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 161.808044][ C0] __x64_sys_futex+0xe5/0x100 [ 161.812715][ C0] do_syscall_64+0xf7/0x1c0 [ 161.817221][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 161.823108][ C0] RIP: 0033:0x45a679 [ 161.826989][ 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 [ 161.846665][ C0] RSP: 002b:00007fc2606a6cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 161.855151][ C0] RAX: ffffffffffffffda RBX: 000000000075bfd0 RCX: 000000000045a679 [ 161.863113][ C0] RDX: 00000000004c1a96 RSI: 0000000000000081 RDI: 000000000075bfd4 [ 161.871097][ C0] RBP: 000000000075bfc8 R08: 0000000000000016 R09: 0000000000000000 [ 161.879239][ C0] R10: ffffffffffffffff R11: 0000000000000246 R12: 000000000075bfd4 [ 161.887199][ C0] R13: 00007ffd96f7160f R14: 00007fc2606a79c0 R15: 000000000075bfd4 [ 161.895178][ C0] rcu: rcu_preempt kthread starved for 10538 jiffies! g5945 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 161.906257][ C0] rcu: RCU grace-period kthread stack dump: [ 161.912135][ C0] rcu_preempt R running task 29048 10 2 0x80004000 [ 161.920109][ C0] Call Trace: [ 161.923497][ C0] __schedule+0x9a0/0xcc0 [ 161.927912][ C0] schedule+0x181/0x210 [ 161.932063][ C0] schedule_timeout+0x14f/0x240 [ 161.936900][ C0] ? run_local_timers+0x120/0x120 [ 161.942524][ C0] rcu_gp_kthread+0xed8/0x1770 [ 161.947283][ C0] kthread+0x332/0x350 [ 161.951367][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 161.956465][ C0] ? kthread_blkcg+0xe0/0xe0 [ 161.961044][ C0] ret_from_fork+0x24/0x30