[ 45.732948][ T25] audit: type=1800 audit(1575407188.872:30): pid=8063 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.15.204' (ECDSA) to the list of known hosts. 2019/12/03 21:06:36 fuzzer started 2019/12/03 21:06:38 dialing manager at 10.128.0.26:42111 2019/12/03 21:06:38 syscalls: 2689 2019/12/03 21:06:38 code coverage: enabled 2019/12/03 21:06:38 comparison tracing: enabled 2019/12/03 21:06:38 extra coverage: extra coverage is not supported by the kernel 2019/12/03 21:06:38 setuid sandbox: enabled 2019/12/03 21:06:38 namespace sandbox: enabled 2019/12/03 21:06:38 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 21:06:38 fault injection: enabled 2019/12/03 21:06:38 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 21:06:38 net packet injection: enabled 2019/12/03 21:06:38 net device setup: enabled 2019/12/03 21:06:38 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 21:06:38 devlink PCI setup: PCI device 0000:00:10.0 is not available 21:06:39 executing program 0: r0 = socket$inet_udp(0x2, 0x2, 0x0) close(r0) socket(0x840000000002, 0x3, 0xff) setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, &(0x7f0000000080)='ip6_vti0\x00 \x00', 0x10) connect$inet(r0, &(0x7f0000000040)={0x2, 0x0, @rand_addr=0xdffffffe}, 0x10) write$binfmt_elf32(r0, &(0x7f00000000c0)=ANY=[@ANYBLOB="4ef2faff32460000002f006ce00000017fffffff830cc6400323000000000000070b00e00000000009000b00108d994fd1826b00180010df"], 0x38) 21:06:39 executing program 1: openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000140)='cpuacct.stat\x00', 0x0, 0x0) r0 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) getsockopt$inet6_opts(0xffffffffffffffff, 0x29, 0x0, &(0x7f0000000580)=""/143, &(0x7f0000000340)=0xfee5) getpeername(0xffffffffffffffff, 0x0, &(0x7f0000000140)) sendmsg$nl_route(0xffffffffffffffff, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000003c0)=ANY=[@ANYBLOB="38000000100005070000", @ANYRES32=0x0, @ANYBLOB="0000000000000000180012000800e9"], 0x3}}, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000740)={0x3, 0x2, 0xf000, 0x1000, &(0x7f0000000000/0x1000)=nil}) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000100)={0x0, 0x0, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) ioctl$KVM_SET_REGS(r2, 0x4090ae82, &(0x7f0000000200)={[0x0, 0x0, 0x0, 0x80000000000000, 0x0, 0x8, 0xfb]}) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)={0xffffffffffffffff}) r4 = dup(r3) ioctl$PERF_EVENT_IOC_ENABLE(r4, 0x8912, 0x400200) ioctl$KVM_RUN(r2, 0xae80, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) ioctl$KVM_NMI(r2, 0xae9a) ioctl$KVM_SET_REGS(r2, 0x4090ae82, &(0x7f0000000380)) ioctl$KVM_RUN(r2, 0xae80, 0x0) syzkaller login: [ 56.098704][ T8225] IPVS: ftp: loaded support on port[0] = 21 21:06:39 executing program 2: r0 = syz_open_dev$video4linux(&(0x7f0000000080)='/dev/v4l-subdev#\x00', 0x200000003, 0x0) ioctl$VIDIOC_SUBDEV_S_FMT(r0, 0xc0585605, &(0x7f0000000000)={0x0, 0x0, {0x0, 0x0, 0x1013}}) [ 56.256046][ T8228] IPVS: ftp: loaded support on port[0] = 21 [ 56.264441][ T8225] chnl_net:caif_netlink_parms(): no params data found [ 56.394081][ T8225] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.402088][ T8225] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.420625][ T8225] device bridge_slave_0 entered promiscuous mode [ 56.440515][ T8225] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.447566][ T8225] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.470797][ T8225] device bridge_slave_1 entered promiscuous mode 21:06:39 executing program 3: r0 = bpf$MAP_CREATE(0x0, &(0x7f0000000000)={0xb, 0x7f, 0x7, 0x5, 0x1}, 0x2c) bpf$MAP_UPDATE_ELEM(0x2, &(0x7f0000002080)={r0, &(0x7f0000000080), &(0x7f0000002640)}, 0x20) setsockopt$netlink_NETLINK_CAP_ACK(0xffffffffffffffff, 0x10e, 0xa, &(0x7f0000000100)=0x300, 0x2) bpf$MAP_UPDATE_ELEM(0x2, &(0x7f00000000c0)={r0, &(0x7f0000000100), &(0x7f0000000040)}, 0x20) bpf$MAP_LOOKUP_ELEM(0x4, &(0x7f0000000040)={r0, &(0x7f0000000100), &(0x7f00000001c0)=""/168}, 0x18) [ 56.510425][ T8225] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.531278][ T8225] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.531604][ T8230] IPVS: ftp: loaded support on port[0] = 21 [ 56.652518][ T8225] team0: Port device team_slave_0 added [ 56.665060][ T8228] chnl_net:caif_netlink_parms(): no params data found [ 56.689514][ T8225] team0: Port device team_slave_1 added [ 56.735732][ T8233] IPVS: ftp: loaded support on port[0] = 21 21:06:39 executing program 4: unshare(0x2a000400) r0 = syz_open_procfs(0x0, &(0x7f0000000000)='net/unix\x00') inotify_rm_watch(r0, 0x0) [ 56.836286][ T8225] device hsr_slave_0 entered promiscuous mode [ 56.901837][ T8225] device hsr_slave_1 entered promiscuous mode [ 56.998569][ T8228] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.019795][ T8228] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.027673][ T8228] device bridge_slave_0 entered promiscuous mode 21:06:40 executing program 5: r0 = epoll_create1(0x0) fcntl$lock(r0, 0x25, &(0x7f0000000080)) fcntl$lock(r0, 0x5, &(0x7f0000000140)={0x1}) [ 57.043749][ T8235] IPVS: ftp: loaded support on port[0] = 21 [ 57.083066][ T8228] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.091660][ T8228] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.102217][ T8228] device bridge_slave_1 entered promiscuous mode [ 57.174183][ T8225] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 57.242094][ T8225] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 57.291077][ T8230] chnl_net:caif_netlink_parms(): no params data found [ 57.299523][ T8225] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 57.375877][ T8228] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.398996][ T8225] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 57.462761][ T8238] IPVS: ftp: loaded support on port[0] = 21 [ 57.468927][ T8228] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.550393][ T8228] team0: Port device team_slave_0 added [ 57.556305][ T8233] chnl_net:caif_netlink_parms(): no params data found [ 57.567554][ T8230] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.574856][ T8230] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.584284][ T8230] device bridge_slave_0 entered promiscuous mode [ 57.592396][ T8230] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.599454][ T8230] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.607405][ T8230] device bridge_slave_1 entered promiscuous mode [ 57.626461][ T8228] team0: Port device team_slave_1 added [ 57.640456][ T8230] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.651951][ T8230] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.751573][ T8228] device hsr_slave_0 entered promiscuous mode [ 57.790083][ T8228] device hsr_slave_1 entered promiscuous mode [ 57.829876][ T8228] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.841781][ T8230] team0: Port device team_slave_0 added [ 57.847629][ T8233] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.857112][ T8233] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.865102][ T8233] device bridge_slave_0 entered promiscuous mode [ 57.911069][ T8230] team0: Port device team_slave_1 added [ 57.917217][ T8233] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.924893][ T8233] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.932667][ T8233] device bridge_slave_1 entered promiscuous mode [ 57.945702][ T8235] chnl_net:caif_netlink_parms(): no params data found [ 58.052737][ T8230] device hsr_slave_0 entered promiscuous mode [ 58.110116][ T8230] device hsr_slave_1 entered promiscuous mode [ 58.149823][ T8230] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.157474][ T8235] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.165006][ T8235] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.175213][ T8235] device bridge_slave_0 entered promiscuous mode [ 58.184085][ T8233] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.202699][ T8233] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.215095][ T8228] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 58.281657][ T8235] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.288738][ T8235] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.296908][ T8235] device bridge_slave_1 entered promiscuous mode [ 58.338187][ T8228] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 58.386668][ T8233] team0: Port device team_slave_0 added [ 58.396791][ T8233] team0: Port device team_slave_1 added [ 58.413610][ T8228] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 58.456384][ T8235] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.512636][ T8233] device hsr_slave_0 entered promiscuous mode [ 58.540022][ T8233] device hsr_slave_1 entered promiscuous mode [ 58.579794][ T8233] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.589420][ T8225] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.606195][ T8228] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 58.661832][ T8238] chnl_net:caif_netlink_parms(): no params data found [ 58.678064][ T8235] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.719298][ T3956] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 58.731895][ T3956] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 58.743015][ T8225] 8021q: adding VLAN 0 to HW filter on device team0 [ 58.751832][ T8235] team0: Port device team_slave_0 added [ 58.757628][ T8230] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 58.813308][ T8230] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 58.866662][ T8235] team0: Port device team_slave_1 added [ 58.874568][ T8230] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 58.952030][ T8230] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 59.002641][ T8238] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.010548][ T8238] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.018168][ T8238] device bridge_slave_0 entered promiscuous mode [ 59.029587][ T8238] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.036790][ T8238] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.045079][ T8238] device bridge_slave_1 entered promiscuous mode [ 59.065435][ T8238] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.086332][ T8238] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.100263][ T3032] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 59.108843][ T3032] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.117881][ T3032] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.125088][ T3032] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.134279][ T3032] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 59.143153][ T3032] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.151613][ T3032] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.158649][ T3032] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.166248][ T3032] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 59.175799][ T3032] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 59.251822][ T8235] device hsr_slave_0 entered promiscuous mode [ 59.291060][ T8235] device hsr_slave_1 entered promiscuous mode [ 59.329954][ T8235] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.345779][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 59.355449][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 59.364055][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 59.372909][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 59.382140][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 59.399065][ T8225] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 59.411187][ T8225] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 59.423583][ T8233] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 59.491797][ T8233] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 59.541648][ T8233] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 59.594080][ T8238] team0: Port device team_slave_0 added [ 59.604750][ T8238] team0: Port device team_slave_1 added [ 59.616264][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 59.624541][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 59.633299][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 59.642434][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 59.650867][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 59.659950][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 59.672170][ T8233] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 59.792642][ T8238] device hsr_slave_0 entered promiscuous mode [ 59.830152][ T8238] device hsr_slave_1 entered promiscuous mode [ 59.869787][ T8238] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.902786][ T8235] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 59.957096][ T8235] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 60.011881][ T8235] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 60.052851][ T3032] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 60.060370][ T3032] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 60.069911][ T8225] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 60.092020][ T8235] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 60.136141][ T8228] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.156137][ T8238] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 60.217613][ T8230] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.229581][ T8238] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 60.272206][ T8238] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 60.323190][ T8238] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 60.390431][ T8228] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.416816][ T8230] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.437977][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.450318][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.458001][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 165.449638][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 165.456629][ C0] (detected by 0, t=10502 jiffies, g=6365, q=126) [ 165.463116][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10501 (4294953694-4294943193), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 165.476543][ C0] syz-executor.0 R running task 27592 8244 8225 0x80004008 [ 165.484429][ C0] Call Trace: [ 165.487698][ C0] [ 165.490544][ C0] sched_show_task+0x40f/0x560 [ 165.495299][ C0] rcu_sched_clock_irq+0x1861/0x1ad0 [ 165.500579][ C0] update_process_times+0x12d/0x180 [ 165.505763][ C0] tick_sched_timer+0x263/0x420 [ 165.510610][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 165.516140][ C0] __hrtimer_run_queues+0x403/0x840 [ 165.521336][ C0] hrtimer_interrupt+0x38c/0xda0 [ 165.526279][ C0] ? debug_smp_processor_id+0x9/0x20 [ 165.531553][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 165.537086][ C0] apic_timer_interrupt+0xf/0x20 [ 165.542000][ C0] [ 165.544926][ C0] RIP: 0010:free_thread_stack+0x151/0x590 [ 165.550644][ C0] Code: 31 f6 e8 42 af 6e 00 43 80 3c 2e 00 74 08 4c 89 e7 e8 43 a4 69 00 49 8b 1c 24 48 83 c3 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 <74> 08 48 89 df e8 25 a4 69 00 48 8b 3b be fc ff ff ff e8 28 04 00 [ 165.570234][ C0] RSP: 0018:ffffc900025d7b08 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 165.578626][ C0] RAX: 1ffff11012fbcbd1 RBX: ffff888097de5e88 RCX: 0000000000000000 [ 165.586587][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea00022c9440 [ 165.594544][ C0] RBP: ffffc900025d7b40 R08: dffffc0000000000 R09: fffffbfff12877ed [ 165.602499][ C0] R10: fffffbfff12877ed R11: 0000000000000000 R12: ffff888097de5f20 [ 165.610456][ C0] R13: dffffc0000000000 R14: 1ffff11012fbcbe4 R15: ffff8880a1437428 [ 165.618431][ C0] ? free_thread_stack+0x12e/0x590 [ 165.623527][ C0] put_task_stack+0xa3/0x130 [ 165.628114][ C0] finish_task_switch+0x3f1/0x550 [ 165.633145][ C0] __schedule+0x9a8/0xcc0 [ 165.637743][ C0] ? ___preempt_schedule+0x16/0x18 [ 165.642843][ C0] preempt_schedule+0xdb/0x120 [ 165.647593][ C0] ___preempt_schedule+0x16/0x18 [ 165.652519][ C0] ? taskstats_exit+0x30c/0xbb0 [ 165.657361][ C0] _raw_spin_unlock_irqrestore+0xcc/0xe0 [ 165.662978][ C0] taskstats_exit+0x30c/0xbb0 [ 165.667638][ C0] ? _raw_spin_unlock_irq+0x64/0x80 [ 165.672820][ C0] ? acct_collect+0x4c4/0x5f0 [ 165.677486][ C0] do_exit+0x53f/0x2020 [ 165.681640][ C0] do_group_exit+0x15c/0x2b0 [ 165.686223][ C0] __do_sys_exit_group+0x17/0x20 [ 165.691173][ C0] __se_sys_exit_group+0x14/0x20 [ 165.696138][ C0] __x64_sys_exit_group+0x3b/0x40 [ 165.701156][ C0] do_syscall_64+0xf7/0x1c0 [ 165.705657][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 165.711541][ C0] RIP: 0033:0x45a679 [ 165.715428][ 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 [ 165.735143][ C0] RSP: 002b:00007ffeb6a7e058 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 165.743539][ C0] RAX: ffffffffffffffda RBX: 000000000000001e RCX: 000000000045a679 [ 165.751493][ C0] RDX: 0000000000414211 RSI: fffffffffffffff7 RDI: 0000000000000000 [ 165.759447][ C0] RBP: 0000000000000000 R08: ffffffffffffffff R09: 00007ffeb6a7e0b0 [ 165.767403][ C0] R10: 00000000007603a0 R11: 0000000000000246 R12: 0000000000000001 [ 165.775363][ C0] R13: 00007ffeb6a7e0b0 R14: 0000000000000000 R15: 00007ffeb6a7e0c0 [ 165.783346][ C0] rcu: rcu_preempt kthread starved for 10533 jiffies! g6365 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 165.794451][ C0] rcu: RCU grace-period kthread stack dump: [ 165.800337][ C0] rcu_preempt R running task 29032 10 2 0x80004000 [ 165.808245][ C0] Call Trace: [ 165.811536][ C0] __schedule+0x9a0/0xcc0 [ 165.815864][ C0] schedule+0x181/0x210 [ 165.820005][ C0] schedule_timeout+0x14f/0x240 [ 165.824840][ C0] ? run_local_timers+0x120/0x120 [ 165.829854][ C0] rcu_gp_kthread+0xed8/0x1770 [ 165.834613][ C0] kthread+0x332/0x350 [ 165.838663][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 165.843758][ C0] ? kthread_blkcg+0xe0/0xe0 [ 165.848332][ C0] ret_from_fork+0x24/0x30