[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 43.757745][ T23] audit: type=1800 audit(1575414636.640:25): pid=8063 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 43.790511][ T23] audit: type=1800 audit(1575414636.650:26): pid=8063 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 43.836522][ T23] audit: type=1800 audit(1575414636.650:27): pid=8063 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 '10.128.15.224' (ECDSA) to the list of known hosts. 2019/12/03 23:10:48 fuzzer started 2019/12/03 23:10:50 dialing manager at 10.128.0.26:42111 2019/12/03 23:10:50 syscalls: 2689 2019/12/03 23:10:50 code coverage: enabled 2019/12/03 23:10:50 comparison tracing: enabled 2019/12/03 23:10:50 extra coverage: extra coverage is not supported by the kernel 2019/12/03 23:10:50 setuid sandbox: enabled 2019/12/03 23:10:50 namespace sandbox: enabled 2019/12/03 23:10:50 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 23:10:50 fault injection: enabled 2019/12/03 23:10:50 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 23:10:50 net packet injection: enabled 2019/12/03 23:10:50 net device setup: enabled 2019/12/03 23:10:50 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 23:10:50 devlink PCI setup: PCI device 0000:00:10.0 is not available 23:10:51 executing program 0: perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 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, 0x0, 0xffffffffffffffff, 0x0) socketpair$unix(0x1, 0x5, 0x0, &(0x7f00000000c0)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$sock_ifreq(r0, 0x8923, &(0x7f0000000200)={'eql\x00`\x00\xa9[,\x00\x14\x01\x03\x03\xf0\x00', @ifru_mtu=0x1}) syz_open_dev$vcsa(&(0x7f0000000080)='/dev/vcsa#\x00', 0x0, 0x0) r1 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000)='/dev/net/tun\x00', 0x0, 0x0) ioctl$TUNSETIFF(r1, 0x400454ca, &(0x7f0000000040)={'eql\x00\x00\x04\x00\x00\x00\x03\x00\x00\x00\xf2\a\x00', 0x10005812}) 23:10:51 executing program 1: openat$rdma_cm(0xffffffffffffff9c, &(0x7f00000001c0)='/dev/infiniband/rdma_cm\x00', 0x2, 0x0) inotify_rm_watch(0xffffffffffffffff, 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_bp={0x0}}, 0x0, 0x0, 0xffffffffffffffff, 0x0) clone(0x8100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff) r0 = socket$alg(0x26, 0x5, 0x0) bind$alg(r0, &(0x7f0000000940)={0x26, 'hash\x00', 0x0, 0x0, 'vmac64(aes-generic)\x00'}, 0x58) setsockopt$ALG_SET_KEY(r0, 0x117, 0x1, &(0x7f0000000000)="cb56b6cc0407008b65d8b4ac2ca35c66", 0x10) syzkaller login: [ 58.477566][ T8228] IPVS: ftp: loaded support on port[0] = 21 [ 58.582626][ T8230] IPVS: ftp: loaded support on port[0] = 21 23:10:51 executing program 2: r0 = creat(&(0x7f0000000180)='./bus\x00', 0x0) ftruncate(r0, 0x8200) r1 = open(&(0x7f0000000080)='./bus\x00', 0x400141042, 0x0) mmap(&(0x7f0000001000/0xa000)=nil, 0xa000, 0x800002, 0x11, r1, 0x0) getresgid(&(0x7f0000003180), 0x0, 0x0) r2 = open(&(0x7f0000000600)='./bus\x00', 0x0, 0x0) ioctl$FS_IOC_FIEMAP(r2, 0xc020660b, &(0x7f0000001480)={0x0, 0x10000, 0x5, 0x0, 0xf}) [ 58.684613][ T8228] chnl_net:caif_netlink_parms(): no params data found [ 58.802166][ T8228] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.810626][ T8228] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.819892][ T8228] device bridge_slave_0 entered promiscuous mode [ 58.842289][ T8228] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.850179][ T8228] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.858170][ T8228] device bridge_slave_1 entered promiscuous mode [ 58.872334][ T8234] IPVS: ftp: loaded support on port[0] = 21 [ 58.882292][ T8230] chnl_net:caif_netlink_parms(): no params data found [ 58.914251][ T8228] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.955298][ T8228] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.985708][ T8230] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.993422][ T8230] bridge0: port 1(bridge_slave_0) entered disabled state 23:10:51 executing program 3: r0 = syz_open_dev$sndtimer(&(0x7f0000014000)='/dev/snd/timer\x00', 0x0, 0x0) ioctl$SNDRV_TIMER_IOCTL_SELECT(r0, 0x40345410, &(0x7f0000000040)={{0x0, 0x3}}) r1 = socket$inet6(0xa, 0x80003, 0xff) dup2(r1, r0) [ 59.001492][ T8230] device bridge_slave_0 entered promiscuous mode [ 59.011183][ T8230] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.018238][ T8230] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.026511][ T8230] device bridge_slave_1 entered promiscuous mode [ 59.035937][ T8228] team0: Port device team_slave_0 added [ 59.060198][ T8228] team0: Port device team_slave_1 added [ 59.102584][ T8230] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.192900][ T8228] device hsr_slave_0 entered promiscuous mode 23:10:52 executing program 4: r0 = socket$alg(0x26, 0x5, 0x0) bind$alg(r0, &(0x7f0000000100)={0x26, 'hash\x00', 0x0, 0x0, 'xcbc(aes)\x00'}, 0x58) setsockopt$ALG_SET_KEY(r0, 0x117, 0x1, &(0x7f00000000c0)="0affefff7f000000001e6ea64aa8e1c9", 0x10) r1 = accept4(r0, 0x0, 0x0, 0x0) recvfrom$ax25(r1, 0x0, 0x0, 0x0, 0x0, 0x0) [ 59.250702][ T8228] device hsr_slave_1 entered promiscuous mode [ 59.301009][ T8230] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.351248][ T8234] chnl_net:caif_netlink_parms(): no params data found [ 59.375089][ T8238] IPVS: ftp: loaded support on port[0] = 21 [ 59.380222][ T8230] team0: Port device team_slave_0 added [ 59.400314][ T8230] team0: Port device team_slave_1 added [ 59.470663][ T8228] netdevsim netdevsim0 netdevsim0: renamed from eth0 23:10:52 executing program 5: r0 = add_key$keyring(&(0x7f0000000380)='keyring\x00', &(0x7f00000003c0)={'syz'}, 0x0, 0x0, 0xfffffffffffffffe) r1 = add_key$user(&(0x7f0000000480)='user\x00', &(0x7f0000000080)={'syz', 0x3}, &(0x7f0000000800)="585ccbc4ed83b836c1a6474914dc5500b66147b3c7218a91690000000042e3d35228897501f93191b076ac446ff0022b8753a1fa748c569f435fb3bae96efb74b50ec93c2db8eae3198a29e5c0cfc60000ce0637cef580b4ec61221adf59be045b70e48884ca000018cea71fcfed06fd7b06f90b5274cc5c1e298a16324fe27da2a9d5ba9ff33c1e8e036e5031949762d009d308bd73f477252d0000000000004000000000000000000000000000000000195e23fb6430a9a4c2850b6380a743d6ea0c3b121f66c716d746aa81c301621b7662c06aae720b87", 0xd9, r0) r2 = add_key$user(&(0x7f0000000200)='user\x00', &(0x7f0000000440)={'syz'}, &(0x7f0000000100)='\x00', 0x1, 0xfffffffffffffffd) keyctl$dh_compute(0x17, &(0x7f0000000000)={r2, r1, r2}, &(0x7f0000000700)=""/243, 0xf3, &(0x7f0000000040)={&(0x7f0000000580)={'poly1305-simd\x00\x00\x00\x00\x00\x00\x0f@\x00\x00\x00\x00\x02\x00\x00\x00\x0f\x00@\x00\x00\x01\x00'}}) [ 59.535439][ T8228] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 59.586325][ T8234] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.598476][ T8234] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.606596][ T8234] device bridge_slave_0 entered promiscuous mode [ 59.627925][ T8240] IPVS: ftp: loaded support on port[0] = 21 [ 59.634401][ T8228] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 59.680666][ T8228] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 59.790686][ T8230] device hsr_slave_0 entered promiscuous mode [ 59.838794][ T8230] device hsr_slave_1 entered promiscuous mode [ 59.898594][ T8230] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.906423][ T8234] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.913678][ T8234] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.921887][ T8234] device bridge_slave_1 entered promiscuous mode [ 59.972167][ T8242] IPVS: ftp: loaded support on port[0] = 21 [ 59.992043][ T8234] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.046860][ T8238] chnl_net:caif_netlink_parms(): no params data found [ 60.056729][ T8234] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.129772][ T8234] team0: Port device team_slave_0 added [ 60.146954][ T8230] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 60.221447][ T8234] team0: Port device team_slave_1 added [ 60.227164][ T8230] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 60.277180][ T8230] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 60.331980][ T8230] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 60.420954][ T8238] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.428040][ T8238] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.436428][ T8238] device bridge_slave_0 entered promiscuous mode [ 60.455170][ T8238] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.463975][ T8238] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.471724][ T8238] device bridge_slave_1 entered promiscuous mode [ 60.491004][ T8238] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.502317][ T8238] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.550207][ T8234] device hsr_slave_0 entered promiscuous mode [ 60.598892][ T8234] device hsr_slave_1 entered promiscuous mode [ 60.638608][ T8234] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.678276][ T8228] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.692034][ T8238] team0: Port device team_slave_0 added [ 60.750487][ T8242] chnl_net:caif_netlink_parms(): no params data found [ 60.761647][ T8238] team0: Port device team_slave_1 added [ 60.817990][ T8240] chnl_net:caif_netlink_parms(): no params data found [ 60.864684][ T8234] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 60.922457][ T8234] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 60.996063][ T8234] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 61.045999][ T8234] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 61.106033][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.115399][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.126197][ T8228] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.170793][ T8238] device hsr_slave_0 entered promiscuous mode [ 61.228904][ T8238] device hsr_slave_1 entered promiscuous mode [ 61.278600][ T8238] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.290934][ T8242] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.298168][ T8242] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.310428][ T8242] device bridge_slave_0 entered promiscuous mode [ 61.325148][ T8242] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.333893][ T8242] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.341916][ T8242] device bridge_slave_1 entered promiscuous mode [ 61.380611][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 61.391421][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.400525][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.408012][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.417538][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 61.426956][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 61.436004][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.444777][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.452762][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.474156][ T8240] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.483470][ T8240] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.492349][ T8240] device bridge_slave_0 entered promiscuous mode [ 61.523498][ T8240] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.534648][ T8240] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.545812][ T8240] device bridge_slave_1 entered promiscuous mode [ 61.555843][ T8242] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.578639][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 61.605446][ T8238] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 61.661412][ T8238] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 61.725854][ T8238] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 61.783468][ T8242] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.794239][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.805118][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 61.814544][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.825916][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 61.835025][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.845560][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.870600][ T8238] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 61.925809][ T8235] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 61.936283][ T8235] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 61.949999][ T8240] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.963040][ T8240] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.986526][ T8242] team0: Port device team_slave_0 added [ 61.995067][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 62.005146][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 62.017427][ T8228] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 62.032626][ T8242] team0: Port device team_slave_1 added [ 62.067266][ T8230] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.077839][ T8240] team0: Port device team_slave_0 added [ 62.110783][ T8234] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.140970][ T8242] device hsr_slave_0 entered promiscuous mode [ 62.178980][ T8242] device hsr_slave_1 entered promiscuous mode [ 62.228725][ T8242] debugfs: Directory 'hsr0' with parent '/' already present! [ 62.238130][ T8240] team0: Port device team_slave_1 added [ 62.312032][ T8240] device hsr_slave_0 entered promiscuous mode [ 62.369246][ T8240] device hsr_slave_1 entered promiscuous mode [ 62.408767][ T8240] debugfs: Directory 'hsr0' with parent '/' already present! [ 62.422991][ T8228] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 62.430613][ T8247] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 62.439304][ T8247] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 62.453451][ T8234] 8021q: adding VLAN 0 to HW filter on device team0 [ 62.478520][ T8247] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 62.487081][ T8247] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 62.507893][ T8247] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 62.516843][ T8247] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 62.525941][ T8247] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.533291][ T8247] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.541091][ T8247] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 62.550195][ T8247] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.559506][ T8247] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.566702][ T8247] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.574406][ T8247] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 62.585487][ T8247] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 62.619277][ T8243] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 62.627970][ T8243] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 62.639128][ T8243] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 62.647733][ T8243] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 62.668230][ T8243] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 62.684480][ T8243] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 62.707040][ T8243] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 62.716126][ T8243] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 62.729780][ T8243] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 62.753523][ T8234] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 62.773867][ T8234] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 167.688339][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 167.695337][ C0] (detected by 0, t=10502 jiffies, g=6609, q=207) [ 167.701923][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294953918-4294943415), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 167.715697][ C0] rcu_preempt R running task 29032 10 2 0x80004008 [ 167.723587][ C0] Call Trace: [ 167.726860][ C0] [ 167.729708][ C0] sched_show_task+0x40f/0x560 [ 167.734479][ C0] rcu_sched_clock_irq+0x1861/0x1ad0 [ 167.739761][ C0] update_process_times+0x12d/0x180 [ 167.744950][ C0] tick_sched_timer+0x263/0x420 [ 167.749788][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 167.755324][ C0] __hrtimer_run_queues+0x403/0x840 [ 167.760526][ C0] hrtimer_interrupt+0x38c/0xda0 [ 167.765467][ C0] ? debug_smp_processor_id+0x9/0x20 [ 167.770743][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 167.776278][ C0] apic_timer_interrupt+0xf/0x20 [ 167.781285][ C0] [ 167.784216][ C0] RIP: 0010:free_thread_stack+0x186/0x590 [ 167.790106][ C0] Code: 8b 3b be fc ff ff ff e8 28 04 00 00 43 80 3c 2e 00 74 08 4c 89 e7 e8 09 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 eb a3 69 00 48 8b 1b e9 82 ff ff [ 167.809702][ C0] RSP: 0018:ffffc90000d0fc48 EFLAGS: 00000a06 ORIG_RAX: ffffffffffffff13 [ 167.818111][ C0] RAX: 1ffff11014eb1c41 RBX: ffff8880a758e208 RCX: ffff8880a9de8280 [ 167.826251][ C0] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea00029c67c0 [ 167.834245][ C0] RBP: ffffc90000d0fc80 R08: 000000000003a768 R09: ffffed101185bf4f [ 167.842205][ C0] R10: ffffed101185bf4f R11: 0000000000000000 R12: ffff8880a758e2a0 [ 167.850169][ C0] R13: dffffc0000000000 R14: 1ffff11014eb1c54 R15: ffff88808c2dfa68 [ 167.858164][ C0] ? free_thread_stack+0x168/0x590 [ 167.863267][ C0] put_task_stack+0xa3/0x130 [ 167.867845][ C0] finish_task_switch+0x3f1/0x550 [ 167.872881][ C0] __schedule+0x9a8/0xcc0 [ 167.877227][ C0] schedule+0x181/0x210 [ 167.881462][ C0] schedule_timeout+0x14f/0x240 [ 167.886301][ C0] ? run_local_timers+0x120/0x120 [ 167.891315][ C0] rcu_gp_kthread+0xed8/0x1770 [ 167.896076][ C0] kthread+0x332/0x350 [ 167.900135][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 167.905231][ C0] ? kthread_blkcg+0xe0/0xe0 [ 167.909809][ C0] ret_from_fork+0x24/0x30 [ 167.914226][ C0] rcu: rcu_preempt kthread starved for 10524 jiffies! g6609 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 167.925309][ C0] rcu: RCU grace-period kthread stack dump: [ 167.931180][ C0] rcu_preempt R running task 29032 10 2 0x80004008 [ 167.939063][ C0] Call Trace: [ 167.942336][ C0] [ 167.945178][ C0] sched_show_task+0x40f/0x560 [ 167.949941][ C0] rcu_check_gp_kthread_starvation+0x170/0x1b0 [ 167.956352][ C0] rcu_sched_clock_irq+0x17d3/0x1ad0 [ 167.961632][ C0] update_process_times+0x12d/0x180 [ 167.966828][ C0] tick_sched_timer+0x263/0x420 [ 167.971663][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 167.977195][ C0] __hrtimer_run_queues+0x403/0x840 [ 167.982402][ C0] hrtimer_interrupt+0x38c/0xda0 [ 167.987361][ C0] ? debug_smp_processor_id+0x9/0x20 [ 167.992638][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 167.998173][ C0] apic_timer_interrupt+0xf/0x20 [ 168.003098][ C0] [ 168.006029][ C0] RIP: 0010:free_thread_stack+0x186/0x590 [ 168.011751][ C0] Code: 8b 3b be fc ff ff ff e8 28 04 00 00 43 80 3c 2e 00 74 08 4c 89 e7 e8 09 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 eb a3 69 00 48 8b 1b e9 82 ff ff [ 168.031353][ C0] RSP: 0018:ffffc90000d0fc48 EFLAGS: 00000a06 ORIG_RAX: ffffffffffffff13 [ 168.039750][ C0] RAX: 1ffff11014eb1c41 RBX: ffff8880a758e208 RCX: ffff8880a9de8280 [ 168.047711][ C0] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea00029c67c0 [ 168.055667][ C0] RBP: ffffc90000d0fc80 R08: 000000000003a768 R09: ffffed101185bf4f [ 168.063626][ C0] R10: ffffed101185bf4f R11: 0000000000000000 R12: ffff8880a758e2a0 [ 168.071583][ C0] R13: dffffc0000000000 R14: 1ffff11014eb1c54 R15: ffff88808c2dfa68 [ 168.079560][ C0] ? free_thread_stack+0x168/0x590 [ 168.084658][ C0] put_task_stack+0xa3/0x130 [ 168.089250][ C0] finish_task_switch+0x3f1/0x550 [ 168.094269][ C0] __schedule+0x9a8/0xcc0 [ 168.098602][ C0] schedule+0x181/0x210 [ 168.102778][ C0] schedule_timeout+0x14f/0x240 [ 168.107645][ C0] ? run_local_timers+0x120/0x120 [ 168.112666][ C0] rcu_gp_kthread+0xed8/0x1770 [ 168.120120][ C0] kthread+0x332/0x350 [ 168.124176][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 168.129283][ C0] ? kthread_blkcg+0xe0/0xe0 [ 168.133948][ C0] ret_from_fork+0x24/0x30