[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 45.856423][ T23] audit: type=1800 audit(1575376766.966:25): pid=8152 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 45.876026][ T23] audit: type=1800 audit(1575376766.966:26): pid=8152 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 45.928772][ T23] audit: type=1800 audit(1575376766.976:27): pid=8152 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 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. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.1.60' (ECDSA) to the list of known hosts. 2019/12/03 12:39:38 fuzzer started 2019/12/03 12:39:39 dialing manager at 10.128.0.26:45711 2019/12/03 12:39:39 syscalls: 2689 2019/12/03 12:39:39 code coverage: enabled 2019/12/03 12:39:39 comparison tracing: enabled 2019/12/03 12:39:39 extra coverage: extra coverage is not supported by the kernel 2019/12/03 12:39:39 setuid sandbox: enabled 2019/12/03 12:39:39 namespace sandbox: enabled 2019/12/03 12:39:39 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 12:39:39 fault injection: enabled 2019/12/03 12:39:39 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 12:39:39 net packet injection: enabled 2019/12/03 12:39:39 net device setup: enabled 2019/12/03 12:39:39 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 12:39:39 devlink PCI setup: PCI device 0000:00:10.0 is not available 12:39:40 executing program 0: setsockopt$IP_VS_SO_SET_DEL(0xffffffffffffffff, 0x0, 0x484, &(0x7f0000000000)={0x0, @initdev={0xac, 0x1e, 0x0, 0x0}, 0x0, 0x0, 'none\x00', 0x0, 0x7, 0x20}, 0x2c) r0 = socket$packet(0x11, 0x2, 0x300) setsockopt$SO_TIMESTAMPING(r0, 0x1, 0x25, &(0x7f0000000040)=0x100, 0x4) sendmsg(r0, &(0x7f00000001c0)={&(0x7f0000000140)=@nfc={0x27, 0x1}, 0x80, 0x0}, 0x0) recvmmsg(r0, &(0x7f0000000000), 0x40000000000008c, 0x2000, 0x0) 12:39:40 executing program 1: r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000000)='/dev/ptmx\x00', 0x0, 0x0) ioctl$TCGETS(r0, 0x5414, &(0x7f0000000040)) 12:39:41 executing program 2: r0 = socket$inet6(0xa, 0x80001, 0x0) setsockopt$inet6_int(r0, 0x29, 0x31, &(0x7f00000000c0)=0xffffff7c, 0x353) getsockopt$inet6_buf(r0, 0x29, 0x6, &(0x7f0000c86000), &(0x7f0000000280)) syzkaller login: [ 59.907266][ T8315] IPVS: ftp: loaded support on port[0] = 21 [ 59.915108][ T8317] IPVS: ftp: loaded support on port[0] = 21 [ 60.136979][ T8315] chnl_net:caif_netlink_parms(): no params data found [ 60.204038][ T8320] IPVS: ftp: loaded support on port[0] = 21 [ 60.230512][ T8317] chnl_net:caif_netlink_parms(): no params data found [ 60.240782][ T8315] bridge0: port 1(bridge_slave_0) entered blocking state 12:39:41 executing program 3: perf_event_open(&(0x7f0000000180)={0x2, 0x70, 0xea, 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) r0 = perf_event_open(&(0x7f000025c000)={0x2, 0x70, 0x3e2, 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, 0xffffffffffffffff, 0x0) close(r0) socket$kcm(0xa, 0x8000000001, 0x0) ioctl$PERF_EVENT_IOC_SET_FILTER(r0, 0x89a0, &(0x7f0000000000)='&@[\x00') ioctl$PERF_EVENT_IOC_SET_FILTER(r0, 0x89a1, &(0x7f0000000680)='&@[\x00') [ 60.257445][ T8315] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.272974][ T8315] device bridge_slave_0 entered promiscuous mode [ 60.297649][ T8315] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.314650][ T8315] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.332868][ T8315] device bridge_slave_1 entered promiscuous mode [ 60.427910][ T8315] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.448022][ T8315] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.466448][ T8317] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.474138][ T8317] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.485562][ T8317] device bridge_slave_0 entered promiscuous mode [ 60.493603][ T8317] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.500663][ T8317] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.510892][ T8317] device bridge_slave_1 entered promiscuous mode [ 60.547961][ T8323] IPVS: ftp: loaded support on port[0] = 21 [ 60.562154][ T8315] team0: Port device team_slave_0 added [ 60.578514][ T8317] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link 12:39:41 executing program 4: r0 = socket$inet_icmp_raw(0x2, 0x3, 0x1) r1 = socket$inet6_tcp(0xa, 0x1, 0x0) r2 = fcntl$dupfd(r0, 0x0, r1) ioctl$PERF_EVENT_IOC_ENABLE(r2, 0x8912, 0x400200) pipe(&(0x7f0000000100)={0xffffffffffffffff, 0xffffffffffffffff}) r5 = socket$alg(0x26, 0x5, 0x0) bind$alg(r5, &(0x7f0000000080)={0x26, 'hash\x00', 0x0, 0x0, 'crc32c\x00'}, 0x58) r6 = accept4$alg(r5, 0x0, 0x0, 0x0) write$binfmt_elf64(r4, &(0x7f0000000040)=ANY=[], 0xfffffdea) splice(r3, 0x0, r6, 0x0, 0x20000000004, 0x0) [ 60.596260][ T8315] team0: Port device team_slave_1 added [ 60.615537][ T8317] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.697409][ T8317] team0: Port device team_slave_0 added [ 60.713867][ T8317] team0: Port device team_slave_1 added [ 60.806009][ T8315] device hsr_slave_0 entered promiscuous mode 12:39:41 executing program 5: unshare(0x8000400) r0 = fanotify_init(0x0, 0x0) fanotify_mark(r0, 0x200000000000001d, 0x2, 0xffffffffffffffff, 0x0) [ 60.892479][ T8315] device hsr_slave_1 entered promiscuous mode [ 60.974488][ T8317] device hsr_slave_0 entered promiscuous mode [ 61.012654][ T8317] device hsr_slave_1 entered promiscuous mode [ 61.052199][ T8317] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.103531][ T8325] IPVS: ftp: loaded support on port[0] = 21 [ 61.119146][ T8327] IPVS: ftp: loaded support on port[0] = 21 [ 61.149387][ T8320] chnl_net:caif_netlink_parms(): no params data found [ 61.223967][ T8320] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.231187][ T8320] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.241483][ T8320] device bridge_slave_0 entered promiscuous mode [ 61.250559][ T8320] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.257717][ T8320] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.265696][ T8320] device bridge_slave_1 entered promiscuous mode [ 61.311110][ T8320] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.321272][ T8315] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 61.354553][ T8317] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 61.410781][ T8317] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 61.475924][ T8317] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 61.526077][ T8320] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.538226][ T8315] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 61.596758][ T8315] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 61.656001][ T8315] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 61.714650][ T8317] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 61.787988][ T8323] chnl_net:caif_netlink_parms(): no params data found [ 61.820337][ T8320] team0: Port device team_slave_0 added [ 61.852722][ T8320] team0: Port device team_slave_1 added [ 61.888508][ T8323] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.897753][ T8323] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.912783][ T8323] device bridge_slave_0 entered promiscuous mode [ 61.920640][ T8323] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.928037][ T8323] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.935912][ T8323] device bridge_slave_1 entered promiscuous mode [ 61.956322][ T8325] chnl_net:caif_netlink_parms(): no params data found [ 62.014864][ T8320] device hsr_slave_0 entered promiscuous mode [ 62.084609][ T8320] device hsr_slave_1 entered promiscuous mode [ 62.112064][ T8320] debugfs: Directory 'hsr0' with parent '/' already present! [ 62.139971][ T8323] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.176499][ T8323] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.197573][ T8325] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.204952][ T8325] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.214471][ T8325] device bridge_slave_0 entered promiscuous mode [ 62.225145][ T8325] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.232891][ T8325] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.240814][ T8325] device bridge_slave_1 entered promiscuous mode [ 62.279312][ T8325] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.295219][ T8323] team0: Port device team_slave_0 added [ 62.306528][ T8315] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.316933][ T8327] chnl_net:caif_netlink_parms(): no params data found [ 62.335561][ T8323] team0: Port device team_slave_1 added [ 62.343838][ T8325] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.364270][ T8320] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 62.421292][ T8320] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 62.474444][ T8320] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 62.506298][ T8320] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 62.580035][ T8325] team0: Port device team_slave_0 added [ 62.593371][ T8325] team0: Port device team_slave_1 added [ 62.617138][ T8315] 8021q: adding VLAN 0 to HW filter on device team0 [ 62.704659][ T8323] device hsr_slave_0 entered promiscuous mode [ 62.752460][ T8323] device hsr_slave_1 entered promiscuous mode [ 62.802054][ T8323] debugfs: Directory 'hsr0' with parent '/' already present! [ 62.820909][ T8317] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.865724][ T8325] device hsr_slave_0 entered promiscuous mode [ 62.923358][ T8325] device hsr_slave_1 entered promiscuous mode [ 62.992058][ T8325] debugfs: Directory 'hsr0' with parent '/' already present! [ 63.002449][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 63.011037][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 63.019690][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 63.028964][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.038505][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.047835][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.068539][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 63.082779][ T8327] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.089882][ T8327] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.098966][ T8327] device bridge_slave_0 entered promiscuous mode [ 63.108742][ T8327] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.116158][ T8327] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.124324][ T8327] device bridge_slave_1 entered promiscuous mode [ 63.153231][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 63.162062][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 63.170850][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.178076][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.185855][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 63.194797][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 63.230885][ T8323] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 63.294547][ T8323] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 63.345158][ T8323] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 63.395004][ T8331] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 63.403952][ T8331] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 63.412738][ T8331] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 63.421374][ T8331] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 63.430862][ T8331] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 63.439260][ T8331] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 63.447770][ T8331] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 63.469410][ T8317] 8021q: adding VLAN 0 to HW filter on device team0 [ 63.487003][ T8325] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 63.534550][ T8323] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 63.574907][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 63.585762][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 63.595357][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 63.604556][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 63.614715][ T8327] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.628648][ T8327] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.649600][ T8327] team0: Port device team_slave_0 added [ 63.663091][ T8327] team0: Port device team_slave_1 added [ 63.675427][ T8325] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 63.715015][ T8325] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 63.765392][ T8315] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 63.776007][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 63.785063][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.794182][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.802195][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.827363][ T8325] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 63.868442][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 63.878599][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 63.887440][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 63.895956][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.903216][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.911313][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 63.944929][ T8327] device hsr_slave_0 entered promiscuous mode [ 64.002502][ T8327] device hsr_slave_1 entered promiscuous mode [ 64.042115][ T8327] debugfs: Directory 'hsr0' with parent '/' already present! [ 64.095385][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 64.105110][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 64.118027][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 64.127736][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 64.138516][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 64.147033][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 64.156132][ T8327] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 64.212673][ T8315] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 64.227575][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 64.236183][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 64.245510][ T8327] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 64.318779][ T8327] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 64.408075][ T8327] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 169.441852][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 169.448852][ C1] (detected by 1, t=10502 jiffies, g=6677, q=69) [ 169.456296][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294954059-4294943556), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 169.469641][ C1] syz-executor.0 R running task 27984 8336 8315 0x0000400a [ 169.477537][ C1] Call Trace: [ 169.481064][ C1] [ 169.484781][ C1] sched_show_task+0x40f/0x560 [ 169.489542][ C1] rcu_sched_clock_irq+0x1861/0x1ad0 [ 169.494912][ C1] update_process_times+0x12d/0x180 [ 169.500099][ C1] tick_sched_timer+0x263/0x420 [ 169.504937][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 169.510469][ C1] __hrtimer_run_queues+0x403/0x840 [ 169.515768][ C1] hrtimer_interrupt+0x38c/0xda0 [ 169.520709][ C1] ? debug_smp_processor_id+0x9/0x20 [ 169.525990][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 169.532243][ C1] apic_timer_interrupt+0xf/0x20 [ 169.537184][ C1] [ 169.540287][ C1] RIP: 0010:__memcg_kmem_uncharge+0x44/0x2e0 [ 169.547208][ C1] Code: fc ff df 4c 8d 77 38 4d 89 f5 49 c1 ed 03 41 80 7c 05 00 00 74 08 4c 89 f7 e8 d8 f4 fa ff 4d 8b 3e b8 01 00 00 00 89 d9 d3 e0 <4d> 85 ff 0f 84 bf 01 00 00 4c 39 3d 04 ce 8c 07 0f 84 6e 02 00 00 [ 169.566799][ C1] RSP: 0018:ffffc90001f77c30 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 169.575196][ C1] RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000000 [ 169.583761][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0001b12e40 [ 169.594610][ C1] RBP: ffffc90001f77c60 R08: dffffc0000000000 R09: fffffbfff12877ed [ 169.602574][ C1] R10: fffffbfff12877ed R11: 0000000000000000 R12: ffffea0001b12e40 [ 169.610906][ C1] R13: 1ffffd40003625cf R14: ffffea0001b12e78 R15: 0000000000000000 [ 169.619781][ C1] ? free_thread_stack+0x124/0x590 [ 169.624978][ C1] free_thread_stack+0x12e/0x590 [ 169.630262][ C1] put_task_stack+0xa3/0x130 [ 169.634848][ C1] finish_task_switch+0x3f1/0x550 [ 169.639929][ C1] __schedule+0x9a8/0xcc0 [ 169.644265][ C1] ? ___preempt_schedule+0x16/0x18 [ 169.650864][ C1] preempt_schedule+0xdb/0x120 [ 169.655798][ C1] ___preempt_schedule+0x16/0x18 [ 169.660726][ C1] ? do_group_exit+0x2a8/0x2b0 [ 169.665528][ C1] _raw_spin_unlock_irq+0x77/0x80 [ 169.670545][ C1] do_group_exit+0x2a8/0x2b0 [ 169.675129][ C1] __do_sys_exit_group+0x17/0x20 [ 169.681008][ C1] __se_sys_exit_group+0x14/0x20 [ 169.685934][ C1] __x64_sys_exit_group+0x3b/0x40 [ 169.690969][ C1] do_syscall_64+0xf7/0x1c0 [ 169.695463][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 169.701341][ C1] RIP: 0033:0x45a679 [ 169.705227][ 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 [ 169.728869][ C1] RSP: 002b:00007ffcaa231088 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 169.737363][ C1] RAX: ffffffffffffffda RBX: 000000000000001e RCX: 000000000045a679 [ 169.745320][ C1] RDX: 0000000000414211 RSI: fffffffffffffff7 RDI: 0000000000000000 [ 169.754846][ C1] RBP: 0000000000000000 R08: ffffffffffffffff R09: 00007ffcaa2310e0 [ 169.764801][ C1] R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000001 [ 169.773629][ C1] R13: 00007ffcaa2310e0 R14: 0000000000000000 R15: 00007ffcaa2310f0 [ 169.781638][ C1] rcu: rcu_preempt kthread starved for 10535 jiffies! g6677 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 169.792718][ C1] rcu: RCU grace-period kthread stack dump: [ 169.798596][ C1] rcu_preempt R running task 29104 10 2 0x80004000 [ 169.806487][ C1] Call Trace: [ 169.809776][ C1] __schedule+0x9a0/0xcc0 [ 169.814350][ C1] schedule+0x181/0x210 [ 169.818522][ C1] schedule_timeout+0x14f/0x240 [ 169.823372][ C1] ? run_local_timers+0x120/0x120 [ 169.828424][ C1] rcu_gp_kthread+0xed8/0x1770 [ 169.833204][ C1] kthread+0x332/0x350 [ 169.837351][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 169.842460][ C1] ? kthread_blkcg+0xe0/0xe0 [ 169.847194][ C1] ret_from_fork+0x24/0x30