[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 50.957084][ T23] audit: type=1800 audit(1578462857.271:25): pid=8220 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 50.996104][ T23] audit: type=1800 audit(1578462857.271:26): pid=8220 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 51.021769][ T23] audit: type=1800 audit(1578462857.271:27): pid=8220 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 '10.128.1.29' (ECDSA) to the list of known hosts. 2020/01/08 05:54:27 fuzzer started 2020/01/08 05:54:29 dialing manager at 10.128.0.26:35703 2020/01/08 05:54:29 syscalls: 2824 2020/01/08 05:54:29 code coverage: enabled 2020/01/08 05:54:29 comparison tracing: enabled 2020/01/08 05:54:29 extra coverage: enabled 2020/01/08 05:54:29 setuid sandbox: enabled 2020/01/08 05:54:29 namespace sandbox: enabled 2020/01/08 05:54:29 Android sandbox: /sys/fs/selinux/policy does not exist 2020/01/08 05:54:29 fault injection: enabled 2020/01/08 05:54:29 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/01/08 05:54:29 net packet injection: enabled 2020/01/08 05:54:29 net device setup: enabled 2020/01/08 05:54:29 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2020/01/08 05:54:29 devlink PCI setup: PCI device 0000:00:10.0 is not available 05:54:30 executing program 0: keyctl$set_reqkey_keyring(0x5, 0xfffffffffffffffd) keyctl$set_timeout(0x12, 0x0, 0x0) 05:54:31 executing program 1: perf_event_open(&(0x7f00000000c0)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x281, 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, 0xfffffdffffffffff, 0xffffffffffffffff, 0x0) r0 = socket$inet(0x2, 0x4000000000000001, 0x0) bind$inet(r0, &(0x7f0000000080)={0x2, 0x4e23, @dev}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x2000000004e23, @dev={0xac, 0x14, 0x14, 0x20}}, 0x10) setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, &(0x7f0000000000)='vxcan1\x00', 0xf) sendmsg$tipc(0xffffffffffffffff, 0x0, 0x0) write$FUSE_INIT(0xffffffffffffffff, 0x0, 0x0) sendto$inet(r0, &(0x7f0000000400)="f62ab313949355e0273e65d3abda21f068933ec46b1fdf41a833e981e7de5b6aa4a1b65d8ec8094ee099d8271d26428366e221fc061208889c5686a4dc0c2d3d4fd66741cc11c4c833102fc156857f99a8b799636ea87c35b0283036520e5953baf9c51316d8d93aa5096030bd0d0dfbbdf445006af75ad33303c89c2de7ee8ac49a59a6605f3343c51ee399b1977da2e34ffbe0425866c7b7ad499ab8611286d60c0f27a1e62be4fb4b9e41eabec273531810fb81d733a5ea29408c19aba4587f9da5920ad564ad6bb89ac4565194535c7f6f54993deceb58a75e137be85d7600", 0xffffff90, 0x60, 0x0, 0x127) syzkaller login: [ 64.763859][ T8386] IPVS: ftp: loaded support on port[0] = 21 [ 64.882382][ T8386] chnl_net:caif_netlink_parms(): no params data found [ 64.927317][ T8386] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.934901][ T8386] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.943740][ T8386] device bridge_slave_0 entered promiscuous mode [ 64.958270][ T8386] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.965408][ T8386] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.986958][ T8386] device bridge_slave_1 entered promiscuous mode 05:54:31 executing program 2: r0 = socket(0x10, 0x3, 0x0) sendmsg$nl_generic(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000140)={0x64, 0x19, 0x205, 0x0, 0x0, {0x1d, 0xd601, 0x9}, [@nested={0x50, 0x12}]}, 0x64}}, 0x0) [ 65.027619][ T8386] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 65.044468][ T8389] IPVS: ftp: loaded support on port[0] = 21 [ 65.052844][ T8386] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 65.103686][ T8386] team0: Port device team_slave_0 added [ 65.128255][ T8386] team0: Port device team_slave_1 added [ 65.218098][ T8386] device hsr_slave_0 entered promiscuous mode 05:54:31 executing program 3: r0 = socket(0x10, 0x80002, 0x0) connect$netlink(r0, &(0x7f0000000000)=@proc, 0x6) [ 65.327278][ T8386] device hsr_slave_1 entered promiscuous mode [ 65.434548][ T8391] IPVS: ftp: loaded support on port[0] = 21 [ 65.467267][ T8393] IPVS: ftp: loaded support on port[0] = 21 05:54:31 executing program 4: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000340)={0xa, 0x0, 0x0, @rand_addr='\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00k\x00'}, 0x1c) sendmmsg$sock(r0, &(0x7f0000002f00)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0, 0x0, &(0x7f0000002e80)=[@timestamping={{0x14, 0x1, 0x25, 0xfffffff8}}], 0x18}}], 0x2, 0x0) [ 65.595561][ T8386] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 65.669283][ T8386] netdevsim netdevsim0 netdevsim1: renamed from eth1 05:54:32 executing program 5: perf_event_open(&(0x7f000001d000)={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_config_ext}, 0x0, 0x0, 0xffffffffffffffff, 0x0) r0 = syz_open_dev$video(&(0x7f0000000280)='/dev/video#\x00', 0x3, 0x0) set_mempolicy(0x8003, &(0x7f00000000c0)=0x9c4b, 0x3) read(r0, &(0x7f0000000540)=""/82, 0x52) [ 65.729733][ T8386] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 65.814772][ T8397] IPVS: ftp: loaded support on port[0] = 21 [ 65.822635][ T8386] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 65.868646][ T8389] chnl_net:caif_netlink_parms(): no params data found [ 65.932297][ T8393] chnl_net:caif_netlink_parms(): no params data found [ 65.981999][ T8399] IPVS: ftp: loaded support on port[0] = 21 [ 66.019541][ T8389] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.027266][ T8389] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.034770][ T8389] device bridge_slave_0 entered promiscuous mode [ 66.055776][ T8391] chnl_net:caif_netlink_parms(): no params data found [ 66.072629][ T8389] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.079968][ T8389] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.087996][ T8389] device bridge_slave_1 entered promiscuous mode [ 66.112725][ T8389] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.124187][ T8389] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.172342][ T8393] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.181060][ T8393] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.189072][ T8393] device bridge_slave_0 entered promiscuous mode [ 66.198780][ T8389] team0: Port device team_slave_0 added [ 66.209163][ T8393] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.218337][ T8393] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.225897][ T8393] device bridge_slave_1 entered promiscuous mode [ 66.250381][ T8389] team0: Port device team_slave_1 added [ 66.274064][ T8391] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.282264][ T8391] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.289976][ T8391] device bridge_slave_0 entered promiscuous mode [ 66.297600][ T8397] chnl_net:caif_netlink_parms(): no params data found [ 66.306112][ T8391] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.313148][ T8391] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.321159][ T8391] device bridge_slave_1 entered promiscuous mode [ 66.367194][ T8391] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.379141][ T8393] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.391671][ T8391] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.414973][ T8391] team0: Port device team_slave_0 added [ 66.426824][ T8391] team0: Port device team_slave_1 added [ 66.434811][ T8386] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.443077][ T8393] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.517957][ T8389] device hsr_slave_0 entered promiscuous mode [ 66.556327][ T8389] device hsr_slave_1 entered promiscuous mode [ 66.606270][ T8389] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 66.613965][ T8389] Cannot create hsr debugfs directory [ 66.630618][ T8393] team0: Port device team_slave_0 added [ 66.642323][ T8393] team0: Port device team_slave_1 added [ 66.698402][ T8391] device hsr_slave_0 entered promiscuous mode [ 66.736502][ T8391] device hsr_slave_1 entered promiscuous mode [ 66.776186][ T8391] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 66.783822][ T8391] Cannot create hsr debugfs directory [ 66.808790][ T8386] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.824345][ T2671] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 66.832982][ T2671] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.841211][ T8397] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.848479][ T8397] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.856173][ T8397] device bridge_slave_0 entered promiscuous mode [ 66.908912][ T8393] device hsr_slave_0 entered promiscuous mode [ 66.956488][ T8393] device hsr_slave_1 entered promiscuous mode [ 67.006142][ T8393] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 67.013702][ T8393] Cannot create hsr debugfs directory [ 67.031137][ T8397] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.039097][ T8397] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.046765][ T8397] device bridge_slave_1 entered promiscuous mode [ 67.066246][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 67.074757][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 67.084354][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.091716][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.102195][ T2698] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 67.170363][ T8397] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 67.200611][ T2682] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 67.209121][ T2682] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 67.217879][ T2682] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.224923][ T2682] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.232511][ T2682] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 67.250171][ T8397] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 67.283339][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 67.293971][ T8399] chnl_net:caif_netlink_parms(): no params data found [ 67.333996][ T8386] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 67.344621][ T8386] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 67.365849][ T8389] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 67.441219][ T2671] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 67.455917][ T2671] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 67.464494][ T2671] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 67.474161][ T2671] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 67.482565][ T2671] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 67.490867][ T2671] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 67.499633][ T2671] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 67.508052][ T2671] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 67.516316][ T2671] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 67.524010][ T2671] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 67.533451][ T8397] team0: Port device team_slave_0 added [ 67.539420][ T8389] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 67.608479][ T8389] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 67.668074][ T8389] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 67.745105][ T8397] team0: Port device team_slave_1 added [ 67.805530][ T8386] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 67.858788][ T8397] device hsr_slave_0 entered promiscuous mode [ 67.896457][ T8397] device hsr_slave_1 entered promiscuous mode [ 67.946408][ T8397] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 67.954012][ T8397] Cannot create hsr debugfs directory [ 67.959789][ T8393] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 68.008477][ T8393] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 68.048981][ T2671] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 68.056646][ T2671] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 68.064302][ T8399] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.064329][ T8399] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.082427][ T8399] device bridge_slave_0 entered promiscuous mode [ 68.090802][ T8391] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 68.169629][ T8393] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 68.225706][ T8393] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 68.259020][ T8399] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.266387][ T8399] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.274047][ T8399] device bridge_slave_1 entered promiscuous mode [ 68.281097][ T8391] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 68.322568][ T8391] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 68.418997][ T8391] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 68.467178][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 68.479229][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 68.499477][ T8399] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 68.524629][ T8386] device veth0_vlan entered promiscuous mode [ 68.532489][ T8399] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 68.544641][ T2698] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 68.553806][ T2698] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 68.562370][ T2698] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 68.570091][ T2698] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 68.618364][ T8386] device veth1_vlan entered promiscuous mode [ 68.629980][ T8399] team0: Port device team_slave_0 added [ 68.663910][ T8399] team0: Port device team_slave_1 added [ 68.678619][ T8397] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 68.717331][ T8397] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 68.768454][ T8397] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 68.818742][ T8397] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 68.865972][ T8389] 8021q: adding VLAN 0 to HW filter on device bond0 [ 68.920186][ T8399] device hsr_slave_0 entered promiscuous mode [ 68.976341][ T8399] device hsr_slave_1 entered promiscuous mode [ 69.016139][ T8399] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 69.023745][ T8399] Cannot create hsr debugfs directory [ 69.065666][ T8389] 8021q: adding VLAN 0 to HW filter on device team0 [ 69.090775][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 69.107080][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 69.121729][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 69.130970][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 69.141833][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 69.150647][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 69.159343][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.166440][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.174797][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 69.207842][ T2698] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 69.231504][ T2698] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 69.246800][ T2698] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.254004][ T2698] bridge0: port 2(bridge_slave_1) entered forwarding state [ 174.246028][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 174.253337][ C0] (detected by 0, t=10502 jiffies, g=6229, q=89) [ 174.259758][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10501 (4294954575-4294944074), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 174.273206][ C0] syz-executor.0 R running task 24408 8386 8385 0x0000400a [ 174.281099][ C0] Call Trace: [ 174.284379][ C0] [ 174.287235][ C0] sched_show_task+0x40f/0x560 [ 174.292006][ C0] rcu_sched_clock_irq+0x1861/0x1ad0 [ 174.297294][ C0] update_process_times+0x12d/0x180 [ 174.302495][ C0] tick_sched_timer+0x263/0x420 [ 174.307409][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 174.312967][ C0] __hrtimer_run_queues+0x403/0x840 [ 174.318178][ C0] hrtimer_interrupt+0x38c/0xda0 [ 174.325473][ C0] ? debug_smp_processor_id+0x9/0x20 [ 174.330757][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 174.336300][ C0] apic_timer_interrupt+0xf/0x20 [ 174.341231][ C0] [ 174.344167][ C0] RIP: 0010:__memcg_kmem_uncharge+0xa/0x1a0 [ 174.350060][ C0] Code: 74 12 48 81 c3 08 02 00 00 48 89 df 4c 89 f6 e8 8c 85 ff ff 5b 41 5e 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 <41> 54 53 50 89 f3 49 89 fc 48 b8 00 00 00 00 00 fc ff df 4c 8d 77 [ 174.369660][ C0] RSP: 0018:ffffc90002067ba8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 174.378066][ C0] RAX: ffffffff81489244 RBX: ffffea00023ea380 RCX: ffff88807d0c0040 [ 174.386038][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea00023ea380 [ 174.394006][ C0] RBP: ffffc90002067bc0 R08: dffffc0000000000 R09: fffffbfff12c962d [ 174.402277][ C0] R10: fffffbfff12c962d R11: 0000000000000000 R12: ffff88809f3e0520 [ 174.410408][ C0] R13: dffffc0000000000 R14: 1ffff11013e7c0a4 R15: ffff8880a850b878 [ 174.418600][ C0] ? free_thread_stack+0x124/0x590 [ 174.423729][ C0] free_thread_stack+0x12e/0x590 [ 174.428669][ C0] put_task_stack+0xa3/0x130 [ 174.433261][ C0] finish_task_switch+0x3f1/0x550 [ 174.438290][ C0] __schedule+0x9a8/0xcc0 [ 174.442631][ C0] schedule+0x181/0x210 [ 174.446790][ C0] do_nanosleep+0x1d0/0x6c0 [ 174.451305][ C0] hrtimer_nanosleep+0x3a6/0x5b0 [ 174.456243][ C0] ? trace_hrtimer_expire_exit+0x2d0/0x2d0 [ 174.462051][ C0] __x64_sys_nanosleep+0x186/0x1d0 [ 174.467170][ C0] do_syscall_64+0xf7/0x1c0 [ 174.471671][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 174.477557][ C0] RIP: 0033:0x4593f0 [ 174.481462][ C0] Code: c0 5b 5d c3 66 0f 1f 44 00 00 8b 04 24 48 83 c4 18 5b 5d c3 66 0f 1f 44 00 00 83 3d 41 f5 61 00 00 75 14 b8 23 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 d4 d1 fb ff c3 48 83 ec 08 e8 ea 46 00 00 [ 174.501061][ C0] RSP: 002b:00007fffdde47ed8 EFLAGS: 00000246 ORIG_RAX: 0000000000000023 [ 174.509469][ C0] RAX: ffffffffffffffda RBX: 0000000000010e56 RCX: 00000000004593f0 [ 174.517581][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fffdde47ee0 [ 174.525768][ C0] RBP: 0000000000000002 R08: 0000000000000001 R09: 00000000015ca940 [ 174.533743][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 174.541721][ C0] R13: 00007fffdde47f30 R14: 0000000000010e56 R15: 00007fffdde47f40 [ 174.549719][ C0] rcu: rcu_preempt kthread starved for 10530 jiffies! g6229 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 174.560905][ C0] rcu: RCU grace-period kthread stack dump: [ 174.566797][ C0] rcu_preempt R running task 28984 10 2 0x80004000 [ 174.574702][ C0] Call Trace: [ 174.578008][ C0] __schedule+0x9a0/0xcc0 [ 174.582417][ C0] schedule+0x181/0x210 [ 174.586578][ C0] schedule_timeout+0x14f/0x240 [ 174.591433][ C0] ? run_local_timers+0x120/0x120 [ 174.596462][ C0] rcu_gp_kthread+0xed8/0x1770 [ 174.601230][ C0] kthread+0x332/0x350 [ 174.605306][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 174.610415][ C0] ? kthread_blkcg+0xe0/0xe0 [ 174.615003][ C0] ret_from_fork+0x24/0x30