[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 43.574150][ T23] audit: type=1800 audit(1575440523.463:25): pid=8031 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 43.599084][ T23] audit: type=1800 audit(1575440523.463:26): pid=8031 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 43.637337][ T23] audit: type=1800 audit(1575440523.473:27): pid=8031 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. 2019/12/04 06:22:15 fuzzer started 2019/12/04 06:22:17 dialing manager at 10.128.0.26:42111 2019/12/04 06:22:17 syscalls: 2689 2019/12/04 06:22:17 code coverage: enabled 2019/12/04 06:22:17 comparison tracing: enabled 2019/12/04 06:22:17 extra coverage: extra coverage is not supported by the kernel 2019/12/04 06:22:17 setuid sandbox: enabled 2019/12/04 06:22:17 namespace sandbox: enabled 2019/12/04 06:22:17 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/04 06:22:17 fault injection: enabled 2019/12/04 06:22:17 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/04 06:22:17 net packet injection: enabled 2019/12/04 06:22:17 net device setup: enabled 2019/12/04 06:22:17 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/04 06:22:17 devlink PCI setup: PCI device 0000:00:10.0 is not available 06:22:18 executing program 0: r0 = syz_open_dev$swradio(&(0x7f00000000c0)='/dev/swradio#\x00', 0x1, 0x2) ioctl$VIDIOC_G_TUNER(r0, 0xc054561d, &(0x7f0000000100)={0xc552, "4bbca603e3567d550af400970107c716b462373c466785ef0fc49c6e3a5ba77b"}) 06:22:18 executing program 1: r0 = memfd_create(&(0x7f0000000200)='eth0\x00', 0x0) mmap(&(0x7f0000000000/0x7000)=nil, 0x7000, 0x200000b, 0x11, r0, 0x0) futex(&(0x7f0000000080), 0x800000000088, 0x0, 0x0, 0x0, 0x0) 06:22:18 executing program 2: socketpair$unix(0x1, 0x5, 0x0, &(0x7f00000001c0)={0xffffffffffffffff}) getsockopt$sock_cred(r0, 0x1, 0x11, &(0x7f0000caaffb)={0x0, 0x0}, &(0x7f0000cab000)=0x1) setresuid(0x0, 0x0, r1) r2 = socket$inet_udp(0x2, 0x2, 0x0) fstat(r2, &(0x7f0000000280)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) setregid(r3, 0x0) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) r5 = getpid() socketpair$unix(0x1, 0x5, 0x0, &(0x7f00000001c0)={0xffffffffffffffff}) getsockopt$sock_cred(r6, 0x1, 0x11, &(0x7f0000caaffb)={0x0, 0x0}, &(0x7f0000cab000)=0x1) sendmsg$unix(r4, &(0x7f0000000340)={0x0, 0x0, 0x0, 0x0, &(0x7f0000000300)=[@cred={{0x1c, 0x1, 0x2, {r5, r7}}}], 0x20}, 0x0) syzkaller login: [ 58.826112][ T8198] IPVS: ftp: loaded support on port[0] = 21 [ 58.835732][ T8196] IPVS: ftp: loaded support on port[0] = 21 [ 59.002810][ T8198] chnl_net:caif_netlink_parms(): no params data found [ 59.037306][ T8198] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.044876][ T8198] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.045366][ T8200] IPVS: ftp: loaded support on port[0] = 21 [ 59.058671][ T8198] device bridge_slave_0 entered promiscuous mode [ 59.079692][ T8198] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.086744][ T8198] bridge0: port 2(bridge_slave_1) entered disabled state 06:22:19 executing program 3: r0 = socket$kcm(0x10, 0x2, 0x10) r1 = socket$kcm(0x2b, 0x1, 0x0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) sendmsg$kcm(r0, &(0x7f0000000280)={0x0, 0xfffffffffffffe7b, &(0x7f0000000000)=[{&(0x7f0000000140)="2e0000003100050ad20780648c6394fb0124fc0010000b400c000200053582c137153e370900018025641700d1bd", 0x2e}], 0x1}, 0x0) [ 59.109785][ T8198] device bridge_slave_1 entered promiscuous mode [ 59.221438][ T8198] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.248562][ T8196] chnl_net:caif_netlink_parms(): no params data found [ 59.283646][ T8198] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link 06:22:19 executing program 4: perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) openat$vga_arbiter(0xffffffffffffff9c, &(0x7f0000000140)='/dev/vga_arbiter\x00', 0x0, 0x0) r0 = add_key$user(&(0x7f00000003c0)='user\x00', &(0x7f0000000400)={'syz', 0x0}, &(0x7f00000002c0)="1975b710bdf61e81b4c8b057a5", 0xae, 0xfffffffffffffffe) r1 = add_key$user(&(0x7f0000000000)='user\x00', &(0x7f0000000440)={'syz'}, &(0x7f00000000c0), 0x218, 0xfffffffffffffffd) keyctl$dh_compute(0x17, &(0x7f0000000140)={r0, r1, r0}, &(0x7f00000000c0)=""/83, 0xfffffffffffffe4f, 0x0) [ 59.373650][ T8205] IPVS: ftp: loaded support on port[0] = 21 [ 59.382128][ T8198] team0: Port device team_slave_0 added [ 59.408677][ T8196] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.417542][ T8196] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.426616][ T8196] device bridge_slave_0 entered promiscuous mode [ 59.437771][ T8198] team0: Port device team_slave_1 added [ 59.448748][ T8200] chnl_net:caif_netlink_parms(): no params data found [ 59.463031][ T8196] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.470987][ T8196] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.478778][ T8196] device bridge_slave_1 entered promiscuous mode [ 59.530086][ T8196] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.560977][ T8196] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link 06:22:19 executing program 5: open(&(0x7f00000009c0)='./bus\x00', 0x141042, 0x0) r0 = creat(0x0, 0x0) creat(&(0x7f0000000180)='./bus\x00', 0x0) r1 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140)='/dev/kvm\x00', 0x0, 0x0) r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0) ioctl$KVM_SET_IRQCHIP(0xffffffffffffffff, 0x8208ae63, &(0x7f0000000280)={0x0, 0x0, @ioapic}) ioctl$KVM_SET_IRQCHIP(r2, 0x8208ae63, 0x0) ioctl$KVM_SET_IRQCHIP(0xffffffffffffffff, 0x8208ae63, 0x0) sendmsg$TIPC_CMD_SET_LINK_PRI(0xffffffffffffffff, 0x0, 0x80) ftruncate(r0, 0x0) sendmmsg(0xffffffffffffffff, &(0x7f0000008600), 0x0, 0x0) [ 59.620647][ T8198] device hsr_slave_0 entered promiscuous mode [ 59.689208][ T8198] device hsr_slave_1 entered promiscuous mode [ 59.772214][ T8208] IPVS: ftp: loaded support on port[0] = 21 [ 59.782246][ T8196] team0: Port device team_slave_0 added [ 59.798750][ T8196] team0: Port device team_slave_1 added [ 59.812460][ T8200] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.820415][ T8200] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.827995][ T8200] device bridge_slave_0 entered promiscuous mode [ 59.838058][ T8200] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.845279][ T8200] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.853174][ T8200] device bridge_slave_1 entered promiscuous mode [ 59.888739][ T8198] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 59.925434][ T8210] IPVS: ftp: loaded support on port[0] = 21 [ 59.937981][ T8200] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.960815][ T8198] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 60.012979][ T8198] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 60.072777][ T8198] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 60.136100][ T8200] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.221510][ T8196] device hsr_slave_0 entered promiscuous mode [ 60.259232][ T8196] device hsr_slave_1 entered promiscuous mode [ 60.298993][ T8196] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.330427][ T8205] chnl_net:caif_netlink_parms(): no params data found [ 60.368489][ T8200] team0: Port device team_slave_0 added [ 60.376028][ T8200] team0: Port device team_slave_1 added [ 60.472470][ T8200] device hsr_slave_0 entered promiscuous mode [ 60.510016][ T8200] device hsr_slave_1 entered promiscuous mode [ 60.548992][ T8200] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.560879][ T8208] chnl_net:caif_netlink_parms(): no params data found [ 60.595716][ T8205] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.603265][ T8205] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.611555][ T8205] device bridge_slave_0 entered promiscuous mode [ 60.644505][ T8196] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 60.691249][ T8205] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.698327][ T8205] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.706100][ T8205] device bridge_slave_1 entered promiscuous mode [ 60.725577][ T8205] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.740045][ T8208] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.747097][ T8208] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.756599][ T8208] device bridge_slave_0 entered promiscuous mode [ 60.764626][ T8196] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 60.821907][ T8196] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 60.872175][ T8196] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 60.921912][ T8205] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.938092][ T8208] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.945390][ T8208] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.953323][ T8208] device bridge_slave_1 entered promiscuous mode [ 60.987490][ T8205] team0: Port device team_slave_0 added [ 60.996287][ T8205] team0: Port device team_slave_1 added [ 61.026252][ T8200] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 61.072436][ T8208] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.088579][ T8208] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.104704][ T8210] chnl_net:caif_netlink_parms(): no params data found [ 61.123516][ T8200] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 61.240588][ T8205] device hsr_slave_0 entered promiscuous mode [ 61.289338][ T8205] device hsr_slave_1 entered promiscuous mode [ 61.328950][ T8205] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.347323][ T8200] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 61.404952][ T8208] team0: Port device team_slave_0 added [ 61.416058][ T8208] team0: Port device team_slave_1 added [ 61.425202][ T8200] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 61.550755][ T8208] device hsr_slave_0 entered promiscuous mode [ 61.589171][ T8208] device hsr_slave_1 entered promiscuous mode [ 61.638962][ T8208] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.655443][ T8198] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.663484][ T8210] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.671592][ T8210] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.679506][ T8210] device bridge_slave_0 entered promiscuous mode [ 61.704175][ T8210] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.711427][ T8210] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.722942][ T8210] device bridge_slave_1 entered promiscuous mode [ 61.737501][ T8208] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 61.781239][ T8208] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 61.821334][ T8208] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 61.880735][ T8210] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.900625][ T8198] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.908093][ T8208] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 61.932105][ T3089] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.940378][ T3089] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.949868][ T8210] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.965336][ T8205] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 62.030348][ T8202] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 62.039234][ T8202] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 62.047539][ T8202] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.054714][ T8202] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.062946][ T8202] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 62.072280][ T8202] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.080632][ T8202] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.087806][ T8202] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.095329][ T8202] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 62.103928][ T8205] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 62.151407][ T8205] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 62.229896][ T8196] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.242390][ T8210] team0: Port device team_slave_0 added [ 62.250726][ T8202] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 62.258474][ T8202] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 62.267700][ T8205] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 62.340797][ T8210] team0: Port device team_slave_1 added [ 62.355007][ T8215] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 62.364073][ T8215] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 62.373221][ T8215] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 62.381746][ T8215] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 62.390463][ T8215] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 62.461727][ T8210] device hsr_slave_0 entered promiscuous mode [ 62.509768][ T8210] device hsr_slave_1 entered promiscuous mode [ 62.539497][ T8210] debugfs: Directory 'hsr0' with parent '/' already present! [ 62.549828][ T8198] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 62.561395][ T8198] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 62.574874][ T8196] 8021q: adding VLAN 0 to HW filter on device team0 [ 62.588393][ T8200] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.600152][ T3089] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 62.607745][ T3089] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 62.616186][ T3089] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 62.624583][ T3089] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 62.633396][ T3089] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 62.641974][ T3089] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 62.651583][ T3089] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 62.669116][ T8202] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 62.676596][ T8202] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 62.692280][ T3089] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 62.704085][ T3089] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 62.712482][ T3089] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.719553][ T3089] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.736909][ T8200] 8021q: adding VLAN 0 to HW filter on device team0 [ 62.748218][ T8198] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 62.771040][ T8211] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 62.778776][ T8211] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 62.792148][ T8211] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 62.803144][ T8211] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 62.812243][ T8211] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.820965][ T8211] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.827995][ T8211] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.835596][ T8211] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 62.844472][ T8211] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 62.853632][ T8211] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 62.862135][ T8211] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 62.896250][ T8208] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.915524][ T3089] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 62.943302][ T8205] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.965877][ T8208] 8021q: adding VLAN 0 to HW filter on device team0 [ 62.991921][ T8196] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 63.002871][ T8196] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 63.018397][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 63.027315][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.035659][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.042717][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.053931][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 63.062623][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 63.071085][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.078119][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 167.948842][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 167.955841][ C0] (detected by 0, t=10502 jiffies, g=6137, q=263) [ 167.962336][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294953943-4294943440), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 167.975675][ C0] syz-executor.1 R running task 28600 8219 8198 0x0000400e [ 167.983778][ C0] Call Trace: [ 167.987055][ C0] [ 167.990039][ C0] sched_show_task+0x40f/0x560 [ 167.994820][ C0] rcu_sched_clock_irq+0x1861/0x1ad0 [ 168.000138][ C0] update_process_times+0x12d/0x180 [ 168.005336][ C0] tick_sched_timer+0x263/0x420 [ 168.010176][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 168.015714][ C0] __hrtimer_run_queues+0x403/0x840 [ 168.020928][ C0] hrtimer_interrupt+0x38c/0xda0 [ 168.025870][ C0] ? debug_smp_processor_id+0x9/0x20 [ 168.031148][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 168.036679][ C0] apic_timer_interrupt+0xf/0x20 [ 168.041600][ C0] [ 168.044526][ C0] RIP: 0010:free_thread_stack+0x151/0x590 [ 168.050241][ 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 [ 168.069828][ C0] RSP: 0018:ffffc90002187848 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 168.078225][ C0] RAX: 1ffff11013008c21 RBX: ffff888098046108 RCX: 0000000000000000 [ 168.086202][ C0] RDX: ffffc90005b41000 RSI: 0000000000000000 RDI: ffffea00025c4fc0 [ 168.094163][ C0] RBP: ffffc90002187880 R08: dffffc0000000000 R09: fffffbfff12877ed [ 168.102125][ C0] R10: fffffbfff12877ed R11: 0000000000000000 R12: ffff8880980461a0 [ 168.110092][ C0] R13: dffffc0000000000 R14: 1ffff11013008c34 R15: ffff88808adc14a8 [ 168.118216][ C0] ? free_thread_stack+0x12e/0x590 [ 168.123323][ C0] put_task_stack+0xa3/0x130 [ 168.127909][ C0] finish_task_switch+0x3f1/0x550 [ 168.132939][ C0] __schedule+0x9a8/0xcc0 [ 168.137265][ C0] schedule+0x181/0x210 [ 168.141411][ C0] futex_wait_queue_me+0x2a3/0x4b0 [ 168.146515][ C0] futex_wait+0x252/0x770 [ 168.150854][ C0] do_futex+0x437/0x3d60 [ 168.155085][ C0] ? __lock_acquire+0xc75/0x1be0 [ 168.160030][ C0] ? __might_fault+0xf9/0x160 [ 168.164699][ C0] ? __might_fault+0xf9/0x160 [ 168.169367][ C0] ? check_preemption_disabled+0xb4/0x260 [ 168.175069][ C0] ? debug_smp_processor_id+0x9/0x20 [ 168.180591][ C0] __se_sys_futex+0x28c/0x360 [ 168.185275][ C0] ? prepare_exit_to_usermode+0x221/0x5b0 [ 168.190984][ C0] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 168.196692][ C0] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 168.202148][ C0] __x64_sys_futex+0xe5/0x100 [ 168.206821][ C0] do_syscall_64+0xf7/0x1c0 [ 168.211318][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 168.217199][ C0] RIP: 0033:0x45a679 [ 168.221084][ 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 [ 168.240680][ C0] RSP: 002b:00007f602dca9cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 168.249086][ C0] RAX: ffffffffffffffda RBX: 000000000075bf28 RCX: 000000000045a679 [ 168.257046][ C0] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000075bf28 [ 168.265081][ C0] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 168.273060][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000075bf2c [ 168.281025][ C0] R13: 00007fff04c0f13f R14: 00007f602dcaa9c0 R15: 000000000075bf2c [ 168.289012][ C0] rcu: rcu_preempt kthread starved for 10536 jiffies! g6137 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 168.300092][ C0] rcu: RCU grace-period kthread stack dump: [ 168.305965][ C0] rcu_preempt R running task 29032 10 2 0x80004000 [ 168.313854][ C0] Call Trace: [ 168.317195][ C0] __schedule+0x9a0/0xcc0 [ 168.321531][ C0] schedule+0x181/0x210 [ 168.325677][ C0] schedule_timeout+0x14f/0x240 [ 168.330543][ C0] ? run_local_timers+0x120/0x120 [ 168.335554][ C0] rcu_gp_kthread+0xed8/0x1770 [ 168.340315][ C0] kthread+0x332/0x350 [ 168.344366][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 168.349472][ C0] ? kthread_blkcg+0xe0/0xe0 [ 168.354047][ C0] ret_from_fork+0x24/0x30