[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 45.193878][ T26] audit: type=1800 audit(1575433940.361:25): pid=8087 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 45.214304][ T26] audit: type=1800 audit(1575433940.361:26): pid=8087 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 45.249001][ T26] audit: type=1800 audit(1575433940.371:27): pid=8087 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 '10.128.0.38' (ECDSA) to the list of known hosts. 2019/12/04 04:32:32 fuzzer started 2019/12/04 04:32:33 dialing manager at 10.128.0.26:42111 2019/12/04 04:32:33 syscalls: 2689 2019/12/04 04:32:33 code coverage: enabled 2019/12/04 04:32:33 comparison tracing: enabled 2019/12/04 04:32:33 extra coverage: extra coverage is not supported by the kernel 2019/12/04 04:32:33 setuid sandbox: enabled 2019/12/04 04:32:33 namespace sandbox: enabled 2019/12/04 04:32:33 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/04 04:32:33 fault injection: enabled 2019/12/04 04:32:33 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/04 04:32:33 net packet injection: enabled 2019/12/04 04:32:33 net device setup: enabled 2019/12/04 04:32:33 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/04 04:32:33 devlink PCI setup: PCI device 0000:00:10.0 is not available 04:32:34 executing program 0: r0 = syz_open_dev$dri(&(0x7f0000000000)='/dev/dri/card#\x00', 0x1, 0x0) r1 = dup2(r0, r0) ioctl$KVM_SET_PIT2(r1, 0x4070aea0, &(0x7f0000000100)={[{0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x711000}, {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2}]}) 04:32:35 executing program 1: perf_event_open(&(0x7f00000001c0)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x41c3, 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, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) syz_open_procfs(0x0, 0x0) clone(0x34004102, 0x0, 0x0, 0x0, 0x0) r0 = socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$tipc(&(0x7f0000000240)='TIPC\x00') sendmsg$TIPC_CMD_SHOW_NAME_TABLE(r0, &(0x7f0000000500)={0x0, 0x0, &(0x7f00000004c0)={&(0x7f0000000480)={0x30, r1, 0x805, 0x0, 0x0, {{0x1, 0x40030000000000}, 0x0, 0x5, 0x0, {0x14}}}, 0x30}}, 0x0) sendmsg$TIPC_CMD_GET_MAX_PORTS(0xffffffffffffffff, 0x0, 0x40000) syzkaller login: [ 59.860180][ T8256] IPVS: ftp: loaded support on port[0] = 21 04:32:35 executing program 2: r0 = socket$inet6_tcp(0xa, 0x1, 0x0) setsockopt$inet6_mreq(r0, 0x29, 0x1b, &(0x7f0000000080)={@remote}, 0x14) setsockopt$inet6_mreq(r0, 0x29, 0x1b, &(0x7f0000000200)={@dev}, 0x14) setsockopt$inet6_mreq(r0, 0x29, 0x1b, &(0x7f0000000100)={@dev={0xfe, 0x80, [], 0xd}}, 0xf0) [ 60.031811][ T8256] chnl_net:caif_netlink_parms(): no params data found [ 60.094780][ T8256] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.102670][ T8256] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.110717][ T8256] device bridge_slave_0 entered promiscuous mode [ 60.121146][ T8256] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.128501][ T8256] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.137257][ T8256] device bridge_slave_1 entered promiscuous mode [ 60.161234][ T8259] IPVS: ftp: loaded support on port[0] = 21 [ 60.167448][ T8256] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.180890][ T8256] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.205491][ T8256] team0: Port device team_slave_0 added [ 60.214808][ T8256] team0: Port device team_slave_1 added [ 60.300693][ T8256] device hsr_slave_0 entered promiscuous mode 04:32:35 executing program 3: sendmsg$TIPC_NL_PEER_REMOVE(0xffffffffffffffff, 0x0, 0x0) perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x41c1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) mmap(&(0x7f000005d000/0x400000)=nil, 0x400000, 0x0, 0x392d6ad36ec2c8b2, 0xffffffffffffffff, 0x0) memfd_create(&(0x7f00000005c0)='\xe87y\xd8\x0e\xfa\xce\xbc`\v\x85\x9eB\xf7\xc1\xbd\x0e\x14\xeeG\xaf\xe7\xb3?\xc7x\xbd\tR\xc5\r.\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xf3\x85C\x8ch\x95{\xeb\xef|\xf9\x89\x00\x00\x00\x00d6\xcbFw\xec2[?', 0x0) syz_open_dev$sndseq(&(0x7f0000000700)='/dev/snd/seq\x00', 0x0, 0x1) memfd_create(&(0x7f0000000040)='\xe87y\xd8\x0e\xfa\xce\xbc`\v\x85\x9eB\xf7\xc1\xbd\x0e\x14\xeeG\xaf\xe7\xb3?\xc7x\xbd\tR\xc5\r.\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xf3\x85C\x8ch\x95{\xeb\xef|\xf9\x89\x00\x00\x00\x00d6\xcbFw\xec2[?', 0x0) madvise(&(0x7f0000000000/0x600000)=nil, 0x600003, 0x8) [ 60.348553][ T8256] device hsr_slave_1 entered promiscuous mode [ 60.459252][ T8261] IPVS: ftp: loaded support on port[0] = 21 04:32:35 executing program 4: r0 = syz_init_net_socket$rose(0xb, 0x5, 0x0) ioctl$sock_ifreq(r0, 0x89f2, &(0x7f0000000140)={'eql\x00', @ifru_data=&(0x7f0000000000)="2751b20dfcb27b0daa30f79f7bfe9e267d81e40151c7ff925c660ed4f9c78391"}) [ 60.531846][ T8256] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 60.609794][ T8256] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 60.640757][ T8256] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 60.702759][ T8256] netdevsim netdevsim0 netdevsim3: renamed from eth3 04:32:35 executing program 5: openat$pfkey(0xffffffffffffff9c, 0x0, 0x417500, 0x0) perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x41c1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) accept$packet(0xffffffffffffffff, 0x0, 0x0) perf_event_open(&(0x7f0000000040)={0x2, 0x70, 0x1f, 0x1, 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) fcntl$getown(0xffffffffffffffff, 0x9) r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000040)={0xa, 0x0, 0x0, @remote, 0x4}, 0x1c) connect$inet6(r0, &(0x7f0000000300)={0xa, 0x4e22, 0x0, @ipv4={[], [], @multicast1}}, 0x1c) r1 = syz_open_procfs(0x0, &(0x7f0000000440)='pagemap\x00') sendfile(r0, r1, 0x0, 0x3ffffffffffffffc) [ 60.767380][ T8263] IPVS: ftp: loaded support on port[0] = 21 [ 60.838822][ T8256] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.846187][ T8256] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.854154][ T8256] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.861360][ T8256] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.876963][ T8265] IPVS: ftp: loaded support on port[0] = 21 [ 60.910413][ T8259] chnl_net:caif_netlink_parms(): no params data found [ 60.975283][ T8270] IPVS: ftp: loaded support on port[0] = 21 [ 61.009507][ T8261] chnl_net:caif_netlink_parms(): no params data found [ 61.073165][ T8261] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.080983][ T8261] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.089080][ T8261] device bridge_slave_0 entered promiscuous mode [ 61.106124][ T8259] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.114659][ T8259] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.122681][ T8259] device bridge_slave_0 entered promiscuous mode [ 61.131478][ T3105] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.140625][ T3105] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.152470][ T8261] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.159787][ T8261] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.167646][ T8261] device bridge_slave_1 entered promiscuous mode [ 61.187459][ T8261] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.198241][ T8259] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.205340][ T8259] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.213429][ T8259] device bridge_slave_1 entered promiscuous mode [ 61.232602][ T8261] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.260258][ T8259] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.272118][ T8259] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.288222][ T8261] team0: Port device team_slave_0 added [ 61.296406][ T8261] team0: Port device team_slave_1 added [ 61.348491][ T8265] chnl_net:caif_netlink_parms(): no params data found [ 61.370396][ T8256] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.431102][ T8261] device hsr_slave_0 entered promiscuous mode [ 61.468938][ T8261] device hsr_slave_1 entered promiscuous mode [ 61.528126][ T8261] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.540539][ T8259] team0: Port device team_slave_0 added [ 61.584372][ T8270] chnl_net:caif_netlink_parms(): no params data found [ 61.595119][ T8259] team0: Port device team_slave_1 added [ 61.607413][ T8263] chnl_net:caif_netlink_parms(): no params data found [ 61.699868][ T8259] device hsr_slave_0 entered promiscuous mode [ 61.768215][ T8259] device hsr_slave_1 entered promiscuous mode [ 61.817856][ T8259] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.838766][ T8256] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.852840][ T3105] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.860973][ T3105] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.887030][ T8261] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 61.939731][ T8265] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.946873][ T8265] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.956608][ T8265] device bridge_slave_0 entered promiscuous mode [ 61.976200][ T8263] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.983868][ T8263] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.992399][ T8263] device bridge_slave_0 entered promiscuous mode [ 62.000477][ T8263] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.007549][ T8263] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.015406][ T8263] device bridge_slave_1 entered promiscuous mode [ 62.033114][ T8261] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 62.102472][ T8261] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 62.160453][ T8265] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.167604][ T8265] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.175547][ T8265] device bridge_slave_1 entered promiscuous mode [ 62.184152][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 62.193197][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 62.202004][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.209109][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.218098][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 62.226628][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.235281][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.242387][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.260271][ T8270] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.267347][ T8270] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.276783][ T8270] device bridge_slave_0 entered promiscuous mode [ 62.284366][ T8261] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 62.356081][ T8270] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.364167][ T8270] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.373598][ T8270] device bridge_slave_1 entered promiscuous mode [ 62.395310][ T8265] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.406503][ T8263] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.421631][ T8265] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.435806][ T8274] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 62.444645][ T8274] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 62.467631][ T8256] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 62.478873][ T8256] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 62.495656][ T8263] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.513559][ T8259] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 62.550731][ T8259] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 62.610371][ T8270] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.620528][ T8274] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 62.629099][ T8274] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 62.637447][ T8274] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 62.646259][ T8274] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 62.654601][ T8274] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 62.663028][ T8274] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 62.672210][ T8274] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 62.680969][ T8274] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 62.689421][ T8274] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 62.697226][ T8274] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 62.718462][ T8265] team0: Port device team_slave_0 added [ 62.726857][ T8259] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 62.781247][ T8270] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.792531][ T8263] team0: Port device team_slave_0 added [ 62.807412][ T8256] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 62.817518][ T8265] team0: Port device team_slave_1 added [ 62.834598][ T8259] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 62.877980][ T3105] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 62.885560][ T3105] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 62.895779][ T8263] team0: Port device team_slave_1 added [ 62.970829][ T8265] device hsr_slave_0 entered promiscuous mode [ 62.998300][ T8265] device hsr_slave_1 entered promiscuous mode [ 63.038200][ T8265] debugfs: Directory 'hsr0' with parent '/' already present! [ 63.072098][ T8270] team0: Port device team_slave_0 added [ 63.084439][ T8270] team0: Port device team_slave_1 added [ 168.127698][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 168.134691][ C0] (detected by 0, t=10502 jiffies, g=6461, q=67) [ 168.141093][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294953946-4294943443), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 168.154549][ C0] blkid R running task 28312 8277 8227 0x8000400a [ 168.162453][ C0] Call Trace: [ 168.165726][ C0] [ 168.168661][ C0] sched_show_task+0x40f/0x560 [ 168.173416][ C0] rcu_sched_clock_irq+0x1861/0x1ad0 [ 168.178694][ C0] update_process_times+0x12d/0x180 [ 168.183888][ C0] tick_sched_timer+0x263/0x420 [ 168.188725][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 168.194262][ C0] __hrtimer_run_queues+0x403/0x840 [ 168.199466][ C0] hrtimer_interrupt+0x38c/0xda0 [ 168.204404][ C0] ? debug_smp_processor_id+0x9/0x20 [ 168.209787][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 168.216211][ C0] apic_timer_interrupt+0xf/0x20 [ 168.221135][ C0] [ 168.224067][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x22/0x50 [ 168.230211][ C0] 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 [ 168.249811][ C0] RSP: 0018:ffffc900027a79e8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 168.258226][ C0] RAX: ffffffff81486ea4 RBX: ffffea0002582a40 RCX: ffff888091600000 [ 168.266214][ C0] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea0002582a40 [ 168.274181][ C0] RBP: ffffc900027a7a28 R08: dffffc0000000000 R09: fffffbfff12877ed [ 168.282144][ C0] R10: fffffbfff12877ed R11: 0000000000000000 R12: ffff888094b9faa0 [ 168.290141][ C0] R13: dffffc0000000000 R14: 1ffff11012973f54 R15: ffff888093a03468 [ 168.298141][ C0] ? free_thread_stack+0x124/0x590 [ 168.303245][ C0] ? free_thread_stack+0x124/0x590 [ 168.308349][ C0] put_task_stack+0xa3/0x130 [ 168.312925][ C0] finish_task_switch+0x3f1/0x550 [ 168.317941][ C0] __schedule+0x9a8/0xcc0 [ 168.322268][ C0] ? ___preempt_schedule+0x16/0x18 [ 168.327379][ C0] preempt_schedule+0xdb/0x120 [ 168.332205][ C0] ___preempt_schedule+0x16/0x18 [ 168.337134][ C0] _raw_spin_unlock_irqrestore+0xcc/0xe0 [ 168.343188][ C0] __wake_up_sync_key+0xe2/0x150 [ 168.348129][ C0] pipe_release+0x17b/0x330 [ 168.352616][ C0] ? fifo_open+0xc70/0xc70 [ 168.357029][ C0] __fput+0x2e4/0x740 [ 168.361017][ C0] ____fput+0x15/0x20 [ 168.364988][ C0] task_work_run+0x17e/0x1b0 [ 168.369571][ C0] do_exit+0x5c4/0x2020 [ 168.373717][ C0] ? check_preemption_disabled+0xb4/0x260 [ 168.379433][ C0] do_group_exit+0x15c/0x2b0 [ 168.384022][ C0] __do_sys_exit_group+0x17/0x20 [ 168.388944][ C0] __se_sys_exit_group+0x14/0x20 [ 168.393964][ C0] __x64_sys_exit_group+0x3b/0x40 [ 168.398985][ C0] do_syscall_64+0xf7/0x1c0 [ 168.403654][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 168.409533][ C0] RIP: 0033:0x7fa3c52901e8 [ 168.413945][ C0] Code: Bad RIP value. [ 168.417997][ C0] RSP: 002b:00007fff8dc812b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 168.426400][ C0] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fa3c52901e8 [ 168.434375][ C0] RDX: 0000000000000002 RSI: 000000000000003c RDI: 0000000000000002 [ 168.442338][ C0] RBP: 00007fa3c5565840 R08: 00000000000000e7 R09: ffffffffffffffa8 [ 168.450295][ C0] R10: 00007fa3c556b740 R11: 0000000000000246 R12: 00007fa3c5565840 [ 168.458252][ C0] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 [ 168.466236][ C0] rcu: rcu_preempt kthread starved for 10535 jiffies! g6461 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 168.477323][ C0] rcu: RCU grace-period kthread stack dump: [ 168.483199][ C0] rcu_preempt R running task 29032 10 2 0x80004000 [ 168.491172][ C0] Call Trace: [ 168.494456][ C0] __schedule+0x9a0/0xcc0 [ 168.498786][ C0] schedule+0x181/0x210 [ 168.502935][ C0] schedule_timeout+0x14f/0x240 [ 168.507775][ C0] ? run_local_timers+0x120/0x120 [ 168.512795][ C0] rcu_gp_kthread+0xed8/0x1770 [ 168.517641][ C0] kthread+0x332/0x350 [ 168.521705][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 168.526805][ C0] ? kthread_blkcg+0xe0/0xe0 [ 168.531386][ C0] ret_from_fork+0x24/0x30