[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 44.333646][ T25] audit: type=1800 audit(1575389777.392:25): pid=8044 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 44.352909][ T25] audit: type=1800 audit(1575389777.392:26): pid=8044 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 44.401246][ T25] audit: type=1800 audit(1575389777.392:27): pid=8044 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 '10.128.0.29' (ECDSA) to the list of known hosts. 2019/12/03 16:16:27 fuzzer started 2019/12/03 16:16:29 dialing manager at 10.128.0.26:45711 2019/12/03 16:16:29 syscalls: 2689 2019/12/03 16:16:29 code coverage: enabled 2019/12/03 16:16:29 comparison tracing: enabled 2019/12/03 16:16:29 extra coverage: extra coverage is not supported by the kernel 2019/12/03 16:16:29 setuid sandbox: enabled 2019/12/03 16:16:29 namespace sandbox: enabled 2019/12/03 16:16:29 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 16:16:29 fault injection: enabled 2019/12/03 16:16:29 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 16:16:29 net packet injection: enabled 2019/12/03 16:16:29 net device setup: enabled 2019/12/03 16:16:29 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 16:16:29 devlink PCI setup: PCI device 0000:00:10.0 is not available 16:16:30 executing program 0: socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000039ff8)={0xffffffffffffffff, 0xffffffffffffffff}) r2 = socket$unix(0x1, 0x2, 0x0) bind$unix(r2, &(0x7f0000801ff8)=@file={0x1, './file0\x00'}, 0xa) r3 = fcntl$dupfd(r0, 0x0, r1) sendmsg$unix(r1, &(0x7f0000000180)={&(0x7f0000f5aff6)=@file={0x1, './file0\x00'}, 0x6e, 0x0}, 0x0) r4 = dup2(r3, r1) write$P9_RLOPEN(r4, 0x0, 0x0) 16:16:30 executing program 1: r0 = openat$audio1(0xffffffffffffff9c, &(0x7f0000000080)='/dev/audio1\x00', 0x0, 0x0) ioctl$SNDCTL_DSP_CHANNELS(r0, 0xc0045006, &(0x7f0000000140)=0x7fff) syzkaller login: [ 57.791134][ T8208] IPVS: ftp: loaded support on port[0] = 21 [ 57.957455][ T8208] chnl_net:caif_netlink_parms(): no params data found [ 58.026433][ T8208] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.034331][ T8208] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.042469][ T8208] device bridge_slave_0 entered promiscuous mode [ 58.058580][ T8211] IPVS: ftp: loaded support on port[0] = 21 [ 58.066555][ T8208] bridge0: port 2(bridge_slave_1) entered blocking state 16:16:31 executing program 2: r0 = syz_open_dev$video4linux(&(0x7f0000000040)='/dev/v4l-subdev#\x00', 0x0, 0x0) ioctl$VIDIOC_SUBDEV_S_FMT(r0, 0xc0585605, &(0x7f0000000080)={0x0, 0x0, {0x0, 0x0, 0x300a}}) [ 58.078336][ T8208] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.087849][ T8208] device bridge_slave_1 entered promiscuous mode [ 58.147532][ T8208] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.169452][ T8208] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.251403][ T8208] team0: Port device team_slave_0 added [ 58.286659][ T8208] team0: Port device team_slave_1 added 16:16:31 executing program 3: r0 = syz_open_dev$vbi(&(0x7f00000001c0)='/dev/vbi#\x00', 0x1, 0x2) ioctl$VIDIOC_QBUF(r0, 0xc058560f, &(0x7f0000000080)={0x0, 0x7, 0x4, 0x0, {0x77359400}, {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, "520571da"}, 0x0, 0x0, @fd, 0x4}) [ 58.385460][ T8208] device hsr_slave_0 entered promiscuous mode [ 58.443041][ T8208] device hsr_slave_1 entered promiscuous mode [ 58.505012][ T8211] chnl_net:caif_netlink_parms(): no params data found [ 58.559722][ T8214] IPVS: ftp: loaded support on port[0] = 21 [ 58.567135][ T8216] IPVS: ftp: loaded support on port[0] = 21 16:16:31 executing program 4: r0 = socket$netlink(0x10, 0x3, 0x0) sendmsg$nl_route(r0, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000003c0)=@newlink={0x50, 0x10, 0x705, 0x0, 0x0, {}, [@IFLA_LINKINFO={0x30, 0x12, @erspan={{0xc, 0x1, 'erspan\x00'}, {0x20, 0x2, [@gre_common_policy=[@IFLA_GRE_COLLECT_METADATA={0x4}, @IFLA_GRE_IFLAGS={0x8}, @IFLA_GRE_OKEY={0x8}, @IFLA_GRE_IKEY={0x8}]]}}}]}, 0x50}}, 0x0) [ 58.618454][ T8211] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.632604][ T8211] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.640246][ T8211] device bridge_slave_0 entered promiscuous mode [ 58.695575][ T8211] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.704446][ T8211] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.712443][ T8211] device bridge_slave_1 entered promiscuous mode [ 58.721404][ T8208] netdevsim netdevsim0 netdevsim0: renamed from eth0 16:16:31 executing program 5: syz_mount_image$ext4(0x0, 0x0, 0x0, 0x1, &(0x7f00000007c0)=[{&(0x7f0000000580)="62f23e748cdfecc0d3bcb88248f9f8f8e87edc5637656d6e511dcdc6041c8d8a0957939950c15c7ac6360c7820e1d5957ba4167f17600b58767db91e29eb92a20f86dddfb0f8dda322d3ddeadba924051c7894f228f090746b1a55e851e7dcaae4d8411f6806d216b4f2e7", 0x6b, 0x7f}], 0x0, 0x0) socketpair$unix(0x1, 0x40000000000001, 0x0, &(0x7f0000000140)={0xffffffffffffffff}) r1 = socket$inet(0x2, 0x4000000000000001, 0x0) r2 = fcntl$dupfd(r0, 0x0, r1) ioctl$PERF_EVENT_IOC_ENABLE(r2, 0x8912, 0x400200) pipe(&(0x7f00000004c0)) syz_mount_image$ext4(&(0x7f0000000080)='ext4\x00', &(0x7f0000000000)='./file0\x00', 0x0, 0xabb, &(0x7f0000000100)=[{&(0x7f00000000c0)="800000003804000019000300e60100006c000000000000000100000001000000004000000040000080000000000000006d5ebe5a0000ffff53ef", 0x4db, 0x400}], 0x4801, 0x0) [ 58.910350][ T8211] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.914454][ T8218] IPVS: ftp: loaded support on port[0] = 21 [ 58.929231][ T8208] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 58.977868][ T8208] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 59.035521][ T8211] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.064611][ T8208] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 59.127095][ T8220] IPVS: ftp: loaded support on port[0] = 21 [ 59.158493][ T8211] team0: Port device team_slave_0 added [ 59.167717][ T8211] team0: Port device team_slave_1 added [ 59.334805][ T8211] device hsr_slave_0 entered promiscuous mode [ 59.402887][ T8211] device hsr_slave_1 entered promiscuous mode [ 59.442645][ T8211] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.453828][ T8216] chnl_net:caif_netlink_parms(): no params data found [ 59.495501][ T8218] chnl_net:caif_netlink_parms(): no params data found [ 59.534436][ T8214] chnl_net:caif_netlink_parms(): no params data found [ 59.576676][ T8214] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.587900][ T8214] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.595677][ T8214] device bridge_slave_0 entered promiscuous mode [ 59.607312][ T8214] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.614800][ T8214] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.623003][ T8214] device bridge_slave_1 entered promiscuous mode [ 59.636651][ T8216] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.644578][ T8216] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.653571][ T8216] device bridge_slave_0 entered promiscuous mode [ 59.681149][ T8218] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.689903][ T8218] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.698323][ T8218] device bridge_slave_0 entered promiscuous mode [ 59.706898][ T8216] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.714400][ T8216] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.722891][ T8216] device bridge_slave_1 entered promiscuous mode [ 59.754796][ T8214] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.764235][ T8218] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.771632][ T8218] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.780450][ T8218] device bridge_slave_1 entered promiscuous mode [ 59.794650][ T8216] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.804278][ T8211] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 59.856181][ T8211] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 59.906283][ T8214] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.928432][ T8216] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.948963][ T8211] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 60.018579][ T8214] team0: Port device team_slave_0 added [ 60.028065][ T8216] team0: Port device team_slave_0 added [ 60.036017][ T8216] team0: Port device team_slave_1 added [ 60.044965][ T8211] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 60.085163][ T8218] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.098223][ T8214] team0: Port device team_slave_1 added [ 60.104784][ T8220] chnl_net:caif_netlink_parms(): no params data found [ 60.128649][ T8218] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.187409][ T8220] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.194984][ T8220] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.202610][ T8220] device bridge_slave_0 entered promiscuous mode [ 60.221253][ T8208] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.275494][ T8214] device hsr_slave_0 entered promiscuous mode [ 60.315709][ T8214] device hsr_slave_1 entered promiscuous mode [ 60.372707][ T8214] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.425625][ T8216] device hsr_slave_0 entered promiscuous mode [ 60.463076][ T8216] device hsr_slave_1 entered promiscuous mode [ 60.513070][ T8216] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.521265][ T8220] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.528841][ T8220] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.539399][ T8220] device bridge_slave_1 entered promiscuous mode [ 60.556366][ T8218] team0: Port device team_slave_0 added [ 60.582983][ T8225] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.591318][ T8225] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.610934][ T8218] team0: Port device team_slave_1 added [ 60.643274][ T8216] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 60.678917][ T8216] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 60.734694][ T8216] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 60.795094][ T8208] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.802306][ T8216] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 60.872912][ T8220] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.904210][ T2914] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 60.913224][ T2914] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.921806][ T2914] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.929255][ T2914] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.938035][ T2914] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 60.947097][ T2914] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.955579][ T2914] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.962674][ T2914] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.970120][ T2914] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 60.978648][ T2914] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 60.987225][ T2914] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 60.995989][ T2914] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.004423][ T8214] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 61.035370][ T8214] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 61.084218][ T8214] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 61.124942][ T8220] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.164321][ T8218] device hsr_slave_0 entered promiscuous mode [ 61.232993][ T8218] device hsr_slave_1 entered promiscuous mode [ 61.272764][ T8218] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.287318][ T8226] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 61.295482][ T8226] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.304957][ T8226] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 61.314797][ T8226] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.323979][ T8226] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 61.332373][ T8226] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 61.343266][ T8211] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.350287][ T8214] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 61.404726][ T8208] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 61.417616][ T8208] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 61.444191][ T1099] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 61.455156][ T1099] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 61.470263][ T8211] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.484391][ T8220] team0: Port device team_slave_0 added [ 61.496539][ T1099] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.505015][ T1099] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.527235][ T8220] team0: Port device team_slave_1 added [ 61.542745][ T8225] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 61.551619][ T8225] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.560866][ T8225] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.568150][ T8225] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.581106][ T8225] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 61.591055][ T8225] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.602166][ T8225] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.610651][ T8225] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.618726][ T8225] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 61.629584][ T8225] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 61.655845][ T8225] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.665685][ T8225] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 61.674267][ T8225] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 61.681880][ T8225] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 61.690711][ T8225] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.699704][ T8225] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.727720][ T8218] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 61.765670][ T8218] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 61.855515][ T8220] device hsr_slave_0 entered promiscuous mode [ 61.903182][ T8220] device hsr_slave_1 entered promiscuous mode [ 61.953279][ T8220] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.978603][ T8208] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 61.989288][ T8218] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 62.048608][ T8218] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 62.119748][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 62.128518][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 62.140631][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 62.150187][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 62.159222][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 62.167676][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 62.183235][ T8214] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.198083][ T8211] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 62.253634][ T8220] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 62.312170][ T8220] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 62.366263][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 62.374683][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 62.385976][ T8214] 8021q: adding VLAN 0 to HW filter on device team0 [ 62.404170][ T8211] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 62.414713][ T8216] 8021q: adding VLAN 0 to HW filter on device bond0 [ 167.462487][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 167.469499][ C0] (detected by 0, t=10502 jiffies, g=6521, q=150) [ 167.475989][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294953853-4294943350), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 167.489953][ C0] syz-executor.0 R running task 27880 8229 8208 0x0000400a [ 167.497853][ C0] Call Trace: [ 167.501214][ C0] [ 167.504153][ C0] sched_show_task+0x40f/0x560 [ 167.508912][ C0] rcu_sched_clock_irq+0x1861/0x1ad0 [ 167.514192][ C0] update_process_times+0x12d/0x180 [ 167.520336][ C0] tick_sched_timer+0x263/0x420 [ 167.525176][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 167.530710][ C0] __hrtimer_run_queues+0x403/0x840 [ 167.535909][ C0] hrtimer_interrupt+0x38c/0xda0 [ 167.540849][ C0] ? debug_smp_processor_id+0x9/0x20 [ 167.546128][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 167.551751][ C0] apic_timer_interrupt+0xf/0x20 [ 167.556670][ C0] [ 167.559599][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x50 [ 167.565747][ C0] Code: 84 00 00 00 00 00 55 48 89 e5 53 48 89 fb e8 13 00 00 00 48 8b 3d 74 25 cd 07 48 89 de e8 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 [ 167.585427][ C0] RSP: 0018:ffffc90002747c38 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 167.594815][ C0] RAX: ffffffff81487326 RBX: ffffea00023db540 RCX: 0000000000000000 [ 167.602890][ C0] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea00023db540 [ 167.610933][ C0] RBP: ffffc90002747c60 R08: dffffc0000000000 R09: fffffbfff12877ed [ 167.618907][ C0] R10: fffffbfff12877ed R11: 0000000000000000 R12: ffff8880a78430a0 [ 167.627141][ C0] R13: dffffc0000000000 R14: 00000000fffffffc R15: ffff8880a81eb428 [ 167.635119][ C0] ? mod_memcg_page_state+0x16/0x190 [ 167.640399][ C0] ? free_thread_stack+0x124/0x590 [ 167.645497][ C0] ? mod_memcg_page_state+0x16/0x190 [ 167.651029][ C0] free_thread_stack+0x168/0x590 [ 167.655963][ C0] put_task_stack+0xa3/0x130 [ 167.660543][ C0] finish_task_switch+0x3f1/0x550 [ 167.665560][ C0] __schedule+0x9a8/0xcc0 [ 167.669890][ C0] ? ___preempt_schedule+0x16/0x18 [ 167.675247][ C0] preempt_schedule+0xdb/0x120 [ 167.680019][ C0] ___preempt_schedule+0x16/0x18 [ 167.684954][ C0] ? do_group_exit+0x2a8/0x2b0 [ 167.689703][ C0] _raw_spin_unlock_irq+0x77/0x80 [ 167.694800][ C0] do_group_exit+0x2a8/0x2b0 [ 167.700016][ C0] __do_sys_exit_group+0x17/0x20 [ 167.705647][ C0] __se_sys_exit_group+0x14/0x20 [ 167.710580][ C0] __x64_sys_exit_group+0x3b/0x40 [ 167.715594][ C0] do_syscall_64+0xf7/0x1c0 [ 167.720087][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 167.726067][ C0] RIP: 0033:0x45a679 [ 167.730070][ 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 [ 167.749764][ C0] RSP: 002b:00007fffb2090998 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 167.758171][ C0] RAX: ffffffffffffffda RBX: 000000000000001e RCX: 000000000045a679 [ 167.766133][ C0] RDX: 0000000000414211 RSI: fffffffffffffff7 RDI: 0000000000000000 [ 167.774107][ C0] RBP: 0000000000000000 R08: ffffffffffffffff R09: 00007fffb20909f0 [ 167.782080][ C0] R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000001 [ 167.790039][ C0] R13: 00007fffb20909f0 R14: 0000000000000000 R15: 00007fffb2090a00 [ 167.798200][ C0] rcu: rcu_preempt kthread starved for 10535 jiffies! g6521 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 167.810010][ C0] rcu: RCU grace-period kthread stack dump: [ 167.816367][ C0] rcu_preempt R running task 29032 10 2 0x80004008 [ 167.826458][ C0] Call Trace: [ 167.829932][ C0] __schedule+0x9a8/0xcc0 [ 167.834748][ C0] schedule+0x181/0x210 [ 167.839077][ C0] schedule_timeout+0x14f/0x240 [ 167.844156][ C0] ? run_local_timers+0x120/0x120 [ 167.849570][ C0] rcu_gp_kthread+0xed8/0x1770 [ 167.854439][ C0] kthread+0x332/0x350 [ 167.858588][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 167.863779][ C0] ? kthread_blkcg+0xe0/0xe0 [ 167.868375][ C0] ret_from_fork+0x24/0x30