Warning: Permanently added '10.128.1.31' (ECDSA) to the list of known hosts. 2019/12/04 09:38:37 fuzzer started 2019/12/04 09:38:39 dialing manager at 10.128.0.26:36481 2019/12/04 09:38:39 syscalls: 2691 2019/12/04 09:38:39 code coverage: enabled 2019/12/04 09:38:39 comparison tracing: enabled 2019/12/04 09:38:39 extra coverage: extra coverage is not supported by the kernel 2019/12/04 09:38:39 setuid sandbox: enabled 2019/12/04 09:38:39 namespace sandbox: enabled 2019/12/04 09:38:39 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/04 09:38:39 fault injection: enabled 2019/12/04 09:38:39 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/04 09:38:39 net packet injection: enabled 2019/12/04 09:38:39 net device setup: enabled 2019/12/04 09:38:39 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/04 09:38:39 devlink PCI setup: PCI device 0000:00:10.0 is not available 09:38:40 executing program 0: perf_event_open(&(0x7f0000000080)={0x2, 0x70, 0xeb, 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) socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) ioctl$sock_SIOCINQ(r0, 0x541b, &(0x7f0000000040)) 09:38:40 executing program 1: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000080)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = openat$userio(0xffffffffffffff9c, &(0x7f0000000080)='/dev/userio\x00', 0x6, 0x0) write$USERIO_CMD_SET_PORT_TYPE(r1, &(0x7f0000000040)={0x1, 0x101}, 0x2) write$RDMA_USER_CM_CMD_LEAVE_MCAST(r1, &(0x7f0000000140)={0x7ffffffff000, 0x10, 0xfa00, {&(0x7f00000000c0)}}, 0x2) write$USERIO_CMD_REGISTER(r1, &(0x7f0000000000), 0x2) syzkaller login: [ 60.209617][ T8353] IPVS: ftp: loaded support on port[0] = 21 [ 60.392806][ T8356] IPVS: ftp: loaded support on port[0] = 21 [ 60.407883][ T8353] chnl_net:caif_netlink_parms(): no params data found 09:38:40 executing program 2: openat$rtc(0xffffffffffffff9c, &(0x7f0000000040)='/dev/rtc0\x00', 0x0, 0x0) syz_open_dev$evdev(&(0x7f0000000000)='/dev/input/event#\x00', 0x0, 0x0) pipe(&(0x7f0000000140)) r0 = socket$unix(0x1, 0x1, 0x0) r1 = socket$unix(0x1, 0x1, 0x0) r2 = dup2(r1, r0) ioctl$PERF_EVENT_IOC_ENABLE(r2, 0x8912, 0x400200) pselect6(0x40, &(0x7f00000000c0), 0x0, &(0x7f0000000140)={0x1ff}, 0x0, 0x0) [ 60.498772][ T8353] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.520502][ T8353] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.536048][ T8353] device bridge_slave_0 entered promiscuous mode [ 60.605559][ T8353] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.616562][ T8353] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.631327][ T8353] device bridge_slave_1 entered promiscuous mode [ 60.684374][ T8353] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.697371][ T8359] IPVS: ftp: loaded support on port[0] = 21 [ 60.707467][ T8356] chnl_net:caif_netlink_parms(): no params data found [ 60.723881][ T8353] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link 09:38:41 executing program 3: r0 = openat$selinux_attr(0xffffffffffffff9c, &(0x7f0000000000)='/proc/thread-self/attr/fscreate\x00', 0x2, 0x0) r1 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000100)='sessionid\x00') sendfile(r0, r1, 0x0, 0x100000001) [ 60.812666][ T8353] team0: Port device team_slave_0 added [ 60.829232][ T8356] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.839108][ T8356] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.847591][ T8356] device bridge_slave_0 entered promiscuous mode [ 60.858381][ T8353] team0: Port device team_slave_1 added [ 60.913212][ T8356] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.922059][ T8356] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.942352][ T8356] device bridge_slave_1 entered promiscuous mode 09:38:41 executing program 4: unshare(0x400) r0 = openat$vcs(0xffffffffffffff9c, &(0x7f0000000000)='/dev/vcs\x00', 0x0, 0x0) socketpair$unix(0x1, 0x3, 0x0, &(0x7f0000000280)={0xffffffffffffffff}) ppoll(&(0x7f0000000080)=[{r1, 0x145e328bc082a972}, {r0}], 0x2, 0x0, 0x0, 0x0) [ 61.015898][ T8356] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.095288][ T8353] device hsr_slave_0 entered promiscuous mode [ 61.162165][ T8353] device hsr_slave_1 entered promiscuous mode 09:38:41 executing program 5: r0 = socket$inet(0x2b, 0x1, 0x0) r1 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='stat\t\xc0\xd2\xfe\xbc\xf9\xdf-\xea\xc8\xc1w\xff\x17\x12H\xe9\x11\x93Q0I\xf81U\ro}\xe6l\xf67\xbd\xbf\x13\x11\x92\f\x8a&\xed\xa4\xdc\xc3x?\x9d\xb5\x11k4\xd3\x1b\x05\x12\xa5`\x8a\xaf\xf0\x1eyR4\f\xd6\xfd\x00\x00\x00\x00', 0x275a, 0x0) mmap(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x0, 0x10012, r1, 0x0) setsockopt$IP_VS_SO_SET_ADD(r0, 0x0, 0x482, &(0x7f0000000000), 0x2c) [ 61.216757][ T8356] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.234972][ T8362] IPVS: ftp: loaded support on port[0] = 21 [ 61.254788][ T8359] chnl_net:caif_netlink_parms(): no params data found [ 61.279552][ T8364] IPVS: ftp: loaded support on port[0] = 21 [ 61.331358][ T8356] team0: Port device team_slave_0 added [ 61.340028][ T8356] team0: Port device team_slave_1 added [ 61.367067][ T8353] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 61.423163][ T8353] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 61.489132][ T8353] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 61.544432][ T8359] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.552295][ T8359] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.560287][ T8359] device bridge_slave_0 entered promiscuous mode [ 61.568823][ T8359] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.576258][ T8359] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.584202][ T8359] device bridge_slave_1 entered promiscuous mode [ 61.597541][ T8353] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 61.605413][ T8366] IPVS: ftp: loaded support on port[0] = 21 [ 61.723226][ T8356] device hsr_slave_0 entered promiscuous mode [ 61.770802][ T8356] device hsr_slave_1 entered promiscuous mode [ 61.810615][ T8356] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.873792][ T8359] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.886337][ T8359] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.964947][ T8362] chnl_net:caif_netlink_parms(): no params data found [ 61.979879][ T8356] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 62.039398][ T8356] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 62.094271][ T8359] team0: Port device team_slave_0 added [ 62.100157][ T8356] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 62.144986][ T8356] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 62.224027][ T8359] team0: Port device team_slave_1 added [ 62.229792][ T8364] chnl_net:caif_netlink_parms(): no params data found [ 62.292530][ T8362] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.299954][ T8362] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.308080][ T8362] device bridge_slave_0 entered promiscuous mode [ 62.344594][ T8362] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.354090][ T8362] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.362395][ T8362] device bridge_slave_1 entered promiscuous mode [ 62.392650][ T8364] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.399732][ T8364] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.408271][ T8364] device bridge_slave_0 entered promiscuous mode [ 62.417777][ T8362] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.430846][ T8362] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.483274][ T8359] device hsr_slave_0 entered promiscuous mode [ 62.530926][ T8359] device hsr_slave_1 entered promiscuous mode [ 62.580484][ T8359] debugfs: Directory 'hsr0' with parent '/' already present! [ 62.603213][ T8364] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.611915][ T8364] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.619633][ T8364] device bridge_slave_1 entered promiscuous mode [ 62.647928][ T8364] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.666113][ T8353] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.687970][ T8362] team0: Port device team_slave_0 added [ 62.696747][ T8362] team0: Port device team_slave_1 added [ 62.703782][ T8364] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.760253][ T8364] team0: Port device team_slave_0 added [ 62.834945][ T8362] device hsr_slave_0 entered promiscuous mode [ 62.900787][ T8362] device hsr_slave_1 entered promiscuous mode [ 62.950837][ T8362] debugfs: Directory 'hsr0' with parent '/' already present! [ 62.960259][ T3014] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 62.968970][ T3014] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 62.979382][ T8364] team0: Port device team_slave_1 added [ 62.997193][ T8353] 8021q: adding VLAN 0 to HW filter on device team0 [ 63.005069][ T8359] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 63.074159][ T8359] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 63.133085][ T8366] chnl_net:caif_netlink_parms(): no params data found [ 63.183595][ T8364] device hsr_slave_0 entered promiscuous mode [ 63.220997][ T8364] device hsr_slave_1 entered promiscuous mode [ 63.260589][ T8364] debugfs: Directory 'hsr0' with parent '/' already present! [ 63.270528][ T8359] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 63.333719][ T8356] 8021q: adding VLAN 0 to HW filter on device bond0 [ 63.357571][ T8356] 8021q: adding VLAN 0 to HW filter on device team0 [ 63.379222][ T8359] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 63.434840][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 63.443918][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 63.481410][ T8364] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 63.534004][ T8364] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 63.592589][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 63.601394][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.609774][ T27] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.617051][ T27] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.625414][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 63.635397][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.643867][ T27] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.650935][ T27] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.659291][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 63.668463][ T27] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 63.676815][ T8366] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.685239][ T8366] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.694257][ T8366] device bridge_slave_0 entered promiscuous mode [ 63.702900][ T8362] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 63.771771][ T8364] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 63.813181][ T8364] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 63.862963][ T8366] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.870054][ T8366] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.878099][ T8366] device bridge_slave_1 entered promiscuous mode [ 63.885578][ T8370] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 63.895138][ T8370] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 63.904013][ T8370] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.911149][ T8370] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.918928][ T8370] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 63.927698][ T8370] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 63.936254][ T8370] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 63.944970][ T8370] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 63.953435][ T8370] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.960538][ T8370] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.968799][ T8362] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 64.049578][ T8370] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 64.058560][ T8370] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 64.067843][ T8370] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 64.077364][ T8370] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 64.085982][ T8362] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 64.162276][ T8362] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 64.229985][ T8366] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 64.243613][ T8370] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 64.252838][ T8370] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 64.261845][ T8370] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 64.275722][ T8356] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 64.287186][ T8356] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 64.318583][ T8366] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 64.329297][ T8370] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 64.339938][ T8370] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 64.349407][ T8370] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 64.358244][ T8370] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 64.366824][ T8370] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 64.375800][ T8370] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 64.385082][ T8370] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 64.392821][ T8370] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 64.423144][ T8370] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 64.433706][ T8370] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 64.442481][ T8370] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 64.451980][ T8370] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 64.464030][ T8353] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 64.476394][ T8353] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 64.494426][ T8366] team0: Port device team_slave_0 added [ 64.510212][ T1087] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 64.519251][ T1087] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 64.528055][ T1087] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 64.536009][ T1087] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 64.561272][ T8353] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 64.569953][ T8366] team0: Port device team_slave_1 added [ 64.587775][ T8356] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 64.597715][ T3014] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 64.606441][ T3014] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 64.692972][ T8366] device hsr_slave_0 entered promiscuous mode [ 64.751900][ T8366] device hsr_slave_1 entered promiscuous mode [ 64.790774][ T8366] debugfs: Directory 'hsr0' with parent '/' already present! [ 64.806557][ T8364] 8021q: adding VLAN 0 to HW filter on device bond0 [ 64.917662][ T8362] 8021q: adding VLAN 0 to HW filter on device bond0 [ 64.944464][ T8359] 8021q: adding VLAN 0 to HW filter on device bond0 [ 169.930320][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 169.937332][ C1] (detected by 1, t=10502 jiffies, g=6605, q=65) [ 169.943738][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294954091-4294943588), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 169.957082][ C1] syz-executor.0 R running task 27912 8373 8353 0x0000400a [ 169.965794][ C1] Call Trace: [ 169.969113][ C1] [ 169.972000][ C1] sched_show_task+0x40f/0x560 [ 169.976966][ C1] rcu_sched_clock_irq+0x1861/0x1ad0 [ 169.982258][ C1] update_process_times+0x12d/0x180 [ 169.987451][ C1] tick_sched_timer+0x263/0x420 [ 169.992294][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 169.997829][ C1] __hrtimer_run_queues+0x403/0x840 [ 170.003033][ C1] hrtimer_interrupt+0x38c/0xda0 [ 170.007987][ C1] ? debug_smp_processor_id+0x9/0x20 [ 170.013383][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 170.018921][ C1] apic_timer_interrupt+0xf/0x20 [ 170.023847][ C1] [ 170.026925][ C1] RIP: 0010:__memcg_kmem_uncharge+0x44/0x1a0 [ 170.033180][ 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 78 fe fa ff 4d 8b 3e b8 01 00 00 00 89 d9 d3 e0 <4d> 85 ff 0f 84 de 00 00 00 4c 39 3d a4 f0 8c 07 0f 84 2c 01 00 00 [ 170.052911][ C1] RSP: 0018:ffffc90001f177d0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 170.061347][ C1] RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000000 [ 170.069319][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea00026ba6c0 [ 170.077312][ C1] RBP: ffffc90001f17800 R08: dffffc0000000000 R09: fffffbfff120248a [ 170.085281][ C1] R10: fffffbfff120248a R11: 0000000000000000 R12: ffffea00026ba6c0 [ 170.093253][ C1] R13: 1ffffd40004d74df R14: ffffea00026ba6f8 R15: 0000000000000000 [ 170.101395][ C1] ? free_thread_stack+0x124/0x590 [ 170.106532][ C1] free_thread_stack+0x12e/0x590 [ 170.111496][ C1] put_task_stack+0xa3/0x130 [ 170.116098][ C1] finish_task_switch+0x3f1/0x550 [ 170.121143][ C1] __schedule+0x9a8/0xcc0 [ 170.125472][ C1] ? ___preempt_schedule+0x16/0x18 [ 170.131254][ C1] preempt_schedule+0xdb/0x120 [ 170.136026][ C1] ___preempt_schedule+0x16/0x18 [ 170.140979][ C1] _raw_spin_unlock_irqrestore+0xcc/0xe0 [ 170.146689][ C1] __call_srcu+0x7ab/0xb00 [ 170.151288][ C1] __synchronize_srcu+0x1cf/0x260 [ 170.156453][ C1] ? rcu_read_lock_any_held+0x1a0/0x1a0 [ 170.162164][ C1] synchronize_srcu+0x2cb/0x2f0 [ 170.167299][ C1] perf_trace_event_unreg+0xc2/0x1d0 [ 170.172622][ C1] perf_trace_destroy+0x97/0xb0 [ 170.177483][ C1] tp_perf_event_destroy+0x15/0x20 [ 170.183030][ C1] ? perf_swevent_read+0x10/0x10 [ 170.188142][ C1] _free_event+0x829/0xdc0 [ 170.192603][ C1] perf_event_release_kernel+0xbdf/0xca0 [ 170.198397][ C1] perf_release+0x3b/0x40 [ 170.202855][ C1] ? perf_mmap+0x1710/0x1710 [ 170.207469][ C1] __fput+0x2e4/0x740 [ 170.211517][ C1] ____fput+0x15/0x20 [ 170.215551][ C1] task_work_run+0x17e/0x1b0 [ 170.220307][ C1] prepare_exit_to_usermode+0x483/0x5b0 [ 170.225907][ C1] syscall_return_slowpath+0x113/0x4a0 [ 170.231407][ C1] do_syscall_64+0x11f/0x1c0 [ 170.236005][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 170.242107][ C1] RIP: 0033:0x414211 [ 170.246022][ C1] Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 1b 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 [ 170.265755][ C1] RSP: 002b:00007ffe96ba0c60 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 170.274206][ C1] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000414211 [ 170.282348][ C1] RDX: 0000001b2dc20000 RSI: 0000000000000000 RDI: 0000000000000003 [ 170.290552][ C1] RBP: 0000000000000001 R08: 000000008a4dee48 R09: 000000008a4dee4c [ 170.298566][ C1] R10: 00007ffe96ba0d40 R11: 0000000000000293 R12: 000000000075bf20 [ 170.306843][ C1] R13: 000000000000fd60 R14: 00000000007609a0 R15: 000000000075bf2c [ 170.314861][ C1] rcu: rcu_preempt kthread starved for 10540 jiffies! g6605 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 170.326269][ C1] rcu: RCU grace-period kthread stack dump: [ 170.332452][ C1] rcu_preempt R running task 29032 10 2 0x80004000 [ 170.340364][ C1] Call Trace: [ 170.343661][ C1] __schedule+0x9a0/0xcc0 [ 170.348155][ C1] schedule+0x181/0x210 [ 170.352480][ C1] schedule_timeout+0x14f/0x240 [ 170.357336][ C1] ? run_local_timers+0x120/0x120 [ 170.362353][ C1] rcu_gp_kthread+0xed8/0x1770 [ 170.367125][ C1] kthread+0x332/0x350 [ 170.371181][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 170.376297][ C1] ? kthread_blkcg+0xe0/0xe0 [ 170.380897][ C1] ret_from_fork+0x24/0x30