[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 45.166485][ T25] audit: type=1800 audit(1575422489.048:25): pid=8177 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 45.185536][ T25] audit: type=1800 audit(1575422489.058:26): pid=8177 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 45.214351][ T25] audit: type=1800 audit(1575422489.058:27): pid=8177 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 '10.128.1.9' (ECDSA) to the list of known hosts. 2019/12/04 01:21:39 fuzzer started 2019/12/04 01:21:41 dialing manager at 10.128.0.26:42111 2019/12/04 01:21:41 syscalls: 2689 2019/12/04 01:21:41 code coverage: enabled 2019/12/04 01:21:41 comparison tracing: enabled 2019/12/04 01:21:41 extra coverage: extra coverage is not supported by the kernel 2019/12/04 01:21:41 setuid sandbox: enabled 2019/12/04 01:21:41 namespace sandbox: enabled 2019/12/04 01:21:41 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/04 01:21:41 fault injection: enabled 2019/12/04 01:21:41 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/04 01:21:41 net packet injection: enabled 2019/12/04 01:21:41 net device setup: enabled 2019/12/04 01:21:41 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/04 01:21:41 devlink PCI setup: PCI device 0000:00:10.0 is not available 01:21:42 executing program 0: socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = dup(r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) syz_mount_image$xfs(&(0x7f0000000200)='xfs\x00', &(0x7f0000000280)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f0000002780)={[{@uquota='uquota'}, {@largeio='largeio'}]}) 01:21:42 executing program 1: r0 = socket$inet6_icmp_raw(0xa, 0x3, 0x3a) setsockopt$inet6_MRT6_ADD_MIF(r0, 0x29, 0x7, &(0x7f0000000100), 0xc) syzkaller login: [ 58.690122][ T8346] IPVS: ftp: loaded support on port[0] = 21 [ 58.754903][ T8348] IPVS: ftp: loaded support on port[0] = 21 01:21:42 executing program 2: perf_event_open(&(0x7f0000000140)={0x2, 0x70, 0xea, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0x0, 0xffffffffffffffff, 0x0) syz_init_net_socket$nfc_raw(0x27, 0x3, 0x0) [ 58.927179][ T8346] chnl_net:caif_netlink_parms(): no params data found [ 58.998015][ T8348] chnl_net:caif_netlink_parms(): no params data found [ 59.084281][ T8346] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.099375][ T8346] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.107173][ T8346] device bridge_slave_0 entered promiscuous mode [ 59.132081][ T8346] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.139343][ T8346] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.147186][ T8346] device bridge_slave_1 entered promiscuous mode 01:21:43 executing program 3: r0 = socket$kcm(0x10, 0x2, 0x0) sendmsg$kcm(r0, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000000)=[{&(0x7f0000000040)="2e000000520081f8f7000000000000040a486516040001000c020000000004000200000040d819a9ffe200000000", 0x2e}], 0x1}, 0x0) [ 59.187817][ T8352] IPVS: ftp: loaded support on port[0] = 21 [ 59.196479][ T8348] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.205134][ T8348] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.218644][ T8348] device bridge_slave_0 entered promiscuous mode [ 59.254729][ T8346] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.265164][ T8348] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.275050][ T8348] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.283685][ T8348] device bridge_slave_1 entered promiscuous mode [ 59.300083][ T8346] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.363136][ T8346] team0: Port device team_slave_0 added [ 59.374840][ T8348] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.404239][ T8346] team0: Port device team_slave_1 added [ 59.414589][ T8348] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.458736][ T8348] team0: Port device team_slave_0 added 01:21:43 executing program 4: socketpair$unix(0x1, 0x5, 0x0, &(0x7f00000000c0)={0xffffffffffffffff}) r1 = dup(r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) syz_open_procfs(0x0, &(0x7f00000001c0)='attr/fsareate\x00\xcb\xc7\xfcI\xd8\x13\xcb\x8am\x92f!L\xaa\xdeU|\xc3]\x99G\x83\x95\xb5\x873\x90\x98\xc6\xeb\xf5\xb9bQ\xcc\xaaZ\xdem\x9fB\x95\xd0!\xb1\xe6\v\xce\xb0\xb7\xbb\xccEb\x9a\x03V\nv\xd7\x9f\xba\x99B\x91\x1c\xd1') [ 59.553423][ T8346] device hsr_slave_0 entered promiscuous mode [ 59.622843][ T8346] device hsr_slave_1 entered promiscuous mode [ 59.669477][ T8348] team0: Port device team_slave_1 added [ 59.685345][ T8354] IPVS: ftp: loaded support on port[0] = 21 01:21:43 executing program 5: kexec_load(0x0, 0x0, 0x0, 0x2) [ 59.763543][ T8352] chnl_net:caif_netlink_parms(): no params data found [ 59.823771][ T8348] device hsr_slave_0 entered promiscuous mode [ 59.870157][ T8348] device hsr_slave_1 entered promiscuous mode [ 59.919522][ T8348] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.962557][ T8352] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.969829][ T8352] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.977657][ T8352] device bridge_slave_0 entered promiscuous mode [ 59.998844][ T8346] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 60.008184][ T8357] IPVS: ftp: loaded support on port[0] = 21 [ 60.065333][ T8352] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.073334][ T8352] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.081449][ T8352] device bridge_slave_1 entered promiscuous mode [ 60.098858][ T8346] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 60.109915][ T8359] IPVS: ftp: loaded support on port[0] = 21 [ 60.180461][ T8346] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 60.244170][ T8346] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 60.307633][ T8352] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.316888][ T8348] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 60.362868][ T8348] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 60.423428][ T8348] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 60.482482][ T8348] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 60.550845][ T8352] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.601759][ T8352] team0: Port device team_slave_0 added [ 60.612333][ T8352] team0: Port device team_slave_1 added [ 60.690792][ T8354] chnl_net:caif_netlink_parms(): no params data found [ 60.771307][ T8352] device hsr_slave_0 entered promiscuous mode [ 60.809760][ T8352] device hsr_slave_1 entered promiscuous mode [ 60.869382][ T8352] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.881664][ T8357] chnl_net:caif_netlink_parms(): no params data found [ 60.960422][ T8354] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.967604][ T8354] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.975906][ T8354] device bridge_slave_0 entered promiscuous mode [ 60.986082][ T8354] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.993564][ T8354] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.001865][ T8354] device bridge_slave_1 entered promiscuous mode [ 61.018428][ T8354] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.029957][ T8354] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.047775][ T8357] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.056474][ T8357] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.065205][ T8357] device bridge_slave_0 entered promiscuous mode [ 61.073391][ T8357] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.080632][ T8357] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.088307][ T8357] device bridge_slave_1 entered promiscuous mode [ 61.104323][ T8352] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 61.187224][ T8352] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 61.232041][ T8352] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 61.301833][ T8346] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.315333][ T8352] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 61.384067][ T8357] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.400596][ T8354] team0: Port device team_slave_0 added [ 61.412876][ T8354] team0: Port device team_slave_1 added [ 61.422009][ T8357] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.444353][ T8357] team0: Port device team_slave_0 added [ 61.463194][ T8357] team0: Port device team_slave_1 added [ 61.521442][ T8354] device hsr_slave_0 entered promiscuous mode [ 61.569847][ T8354] device hsr_slave_1 entered promiscuous mode [ 61.609406][ T8354] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.672971][ T3007] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.681949][ T3007] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.695871][ T8348] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.705691][ T8346] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.721879][ T8359] chnl_net:caif_netlink_parms(): no params data found [ 61.792471][ T8357] device hsr_slave_0 entered promiscuous mode [ 61.850025][ T8357] device hsr_slave_1 entered promiscuous mode [ 61.889480][ T8357] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.934253][ T8362] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 61.946646][ T8362] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.955518][ T8362] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.962809][ T8362] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.971601][ T8362] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 61.980666][ T8362] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.989115][ T8362] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.996360][ T8362] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.004230][ T8362] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 62.012700][ T8362] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 62.021194][ T8362] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 62.043629][ T8354] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 62.081323][ T8354] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 62.155743][ T8354] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 62.213616][ T8354] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 62.263886][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 62.272021][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 62.298661][ T8348] 8021q: adding VLAN 0 to HW filter on device team0 [ 62.315445][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 62.326358][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 62.335705][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 62.344445][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 62.352922][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 62.361765][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 62.371831][ T43] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.378871][ T43] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.390285][ T8352] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.417610][ T8346] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 62.429828][ T8346] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 62.442808][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 62.450962][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 62.458771][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 62.467584][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 62.476724][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 62.485544][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 62.494078][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 62.502009][ T8357] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 62.541428][ T8359] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.548575][ T8359] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.556730][ T8359] device bridge_slave_0 entered promiscuous mode [ 62.583045][ T8357] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 62.622427][ T8362] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 62.631021][ T8362] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 62.638759][ T8362] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 62.648450][ T8362] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.657014][ T8362] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.664117][ T8362] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.671785][ T8362] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 62.680594][ T8362] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 62.689116][ T8362] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 62.696800][ T8362] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 62.708632][ T8352] 8021q: adding VLAN 0 to HW filter on device team0 [ 62.716336][ T8359] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.723454][ T8359] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.731769][ T8359] device bridge_slave_1 entered promiscuous mode [ 62.750500][ T8357] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 62.795227][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 62.805788][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 62.814433][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 62.823798][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 62.832608][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 62.841248][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 62.849819][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 62.858154][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 62.866779][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 62.875486][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 62.884240][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.891303][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.898890][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 62.907727][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.916181][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.923270][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.931342][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 62.939162][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 62.953237][ T8348] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 62.963750][ T8357] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 63.031310][ T8346] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 63.047360][ T8359] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.057632][ T8365] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 63.077010][ T8365] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 63.102533][ T8359] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.135164][ T8365] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 63.143403][ T8365] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 63.155635][ T8348] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 63.169496][ T3209] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 63.181821][ T3209] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 63.190892][ T3209] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 63.203913][ T3209] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 63.215537][ T3209] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 63.228712][ T8359] team0: Port device team_slave_0 added [ 63.249340][ T8359] team0: Port device team_slave_1 added [ 63.277786][ T8352] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 63.303865][ T8352] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 168.359229][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 168.366241][ C0] (detected by 0, t=10502 jiffies, g=6729, q=202) [ 168.372729][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294953939-4294943436), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 168.386068][ C0] syz-executor.0 R running task 29032 8372 8346 0x0000400a [ 168.393956][ C0] Call Trace: [ 168.397315][ C0] [ 168.400166][ C0] sched_show_task+0x40f/0x560 [ 168.404926][ C0] rcu_sched_clock_irq+0x1861/0x1ad0 [ 168.410203][ C0] update_process_times+0x12d/0x180 [ 168.415387][ C0] tick_sched_timer+0x263/0x420 [ 168.420222][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 168.425753][ C0] __hrtimer_run_queues+0x403/0x840 [ 168.430950][ C0] hrtimer_interrupt+0x38c/0xda0 [ 168.435891][ C0] ? debug_smp_processor_id+0x9/0x20 [ 168.441166][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 168.446695][ C0] apic_timer_interrupt+0xf/0x20 [ 168.451613][ C0] [ 168.454542][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x48/0x50 [ 168.462245][ C0] Code: 80 13 00 00 83 fa 02 75 21 48 8b 91 88 13 00 00 48 8b 32 48 8d 7e 01 8b 89 84 13 00 00 48 39 cf 73 08 48 89 44 f2 08 48 89 3a 0f 1f 80 00 00 00 00 4c 8b 04 24 65 48 8b 04 25 c0 1d 02 00 65 [ 168.481837][ C0] RSP: 0018:ffffc900027476b0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 168.490249][ C0] RAX: ffffffff81487433 RBX: 0000000000000000 RCX: 0000000000040000 [ 168.498223][ C0] RDX: ffffc90002189000 RSI: 000000000003ffff RDI: 0000000000040000 [ 168.506192][ C0] RBP: ffffc900027476d8 R08: dffffc0000000000 R09: fffffbfff120248a [ 168.514156][ C0] R10: fffffbfff120248a R11: 0000000000000000 R12: dffffc0000000000 [ 168.522119][ C0] R13: dffffc0000000000 R14: 00000000fffffffc R15: ffff88808ca3b728 [ 168.530112][ C0] ? mod_memcg_page_state+0x123/0x190 [ 168.535477][ C0] ? mod_memcg_page_state+0x123/0x190 [ 168.540838][ C0] free_thread_stack+0x168/0x590 [ 168.545765][ C0] put_task_stack+0xa3/0x130 [ 168.550342][ C0] finish_task_switch+0x3f1/0x550 [ 168.555354][ C0] __schedule+0x9a8/0xcc0 [ 168.559677][ C0] ? ___preempt_schedule+0x16/0x18 [ 168.564772][ C0] preempt_schedule+0xdb/0x120 [ 168.569521][ C0] ___preempt_schedule+0x16/0x18 [ 168.574460][ C0] ? page_poisoning_enabled+0x1c/0x30 [ 168.579821][ C0] prep_new_page+0x161/0x2e0 [ 168.584416][ C0] get_page_from_freelist+0x850/0xaa0 [ 168.589795][ C0] __alloc_pages_nodemask+0x264/0x5d0 [ 168.595162][ C0] alloc_pages_vma+0x94a/0xd50 [ 168.599935][ C0] do_huge_pmd_anonymous_page+0x883/0xe50 [ 168.605650][ C0] handle_mm_fault+0x2017/0x2890 [ 168.610597][ C0] do_user_addr_fault+0x589/0xaf0 [ 168.615638][ C0] __do_page_fault+0xd3/0x1f0 [ 168.620327][ C0] do_page_fault+0x99/0xb0 [ 168.624761][ C0] page_fault+0x39/0x40 [ 168.628909][ C0] RIP: 0010:__put_user_4+0x1c/0x30 [ 168.634012][ C0] Code: 1f 00 c3 90 66 2e 0f 1f 84 00 00 00 00 00 65 48 8b 1c 25 c0 1d 02 00 48 8b 9b 90 14 00 00 48 83 eb 03 48 39 d9 73 4a 0f 1f 00 <89> 01 31 c0 0f 1f 00 c3 66 90 66 2e 0f 1f 84 00 00 00 00 00 65 48 [ 168.653632][ C0] RSP: 0018:ffffc90002747e68 EFLAGS: 00010293 [ 168.659695][ C0] RAX: 0000000000000003 RBX: 00007fffffffeffd RCX: 0000000020000240 [ 168.667654][ C0] RDX: dffffc0000000000 RSI: ffff88806c1d08f8 RDI: 0000000000000286 [ 168.675612][ C0] RBP: ffffc90002747ed8 R08: dffffc0000000000 R09: fffffbfff12877ed [ 168.683571][ C0] R10: fffffbfff12877ed R11: 0000000000000000 R12: 0000000000000005 [ 168.691530][ C0] R13: 0000000020000240 R14: 0000000000000004 R15: 0000000000000000 [ 168.699514][ C0] ? __sys_socketpair+0xbf/0xc90 [ 168.704439][ C0] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 168.710155][ C0] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 168.715860][ C0] __x64_sys_socketpair+0x9b/0xb0 [ 168.720877][ C0] do_syscall_64+0xf7/0x1c0 [ 168.725370][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 168.731246][ C0] RIP: 0033:0x45a679 [ 168.735136][ 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 [ 168.754727][ C0] RSP: 002b:00007fb0b59cac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000035 [ 168.763125][ C0] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045a679 [ 168.771082][ C0] RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000001 [ 168.779036][ C0] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 168.786993][ C0] R10: 0000000020000240 R11: 0000000000000246 R12: 00007fb0b59cb6d4 [ 168.795044][ C0] R13: 00000000004ca783 R14: 00000000004e39b8 R15: 00000000ffffffff [ 168.803020][ C0] rcu: rcu_preempt kthread starved for 10546 jiffies! g6729 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 168.814099][ C0] rcu: RCU grace-period kthread stack dump: [ 168.819973][ C0] rcu_preempt R running task 29048 10 2 0x80004000 [ 168.827865][ C0] Call Trace: [ 168.831148][ C0] __schedule+0x9a0/0xcc0 [ 168.835647][ C0] schedule+0x181/0x210 [ 168.839798][ C0] schedule_timeout+0x14f/0x240 [ 168.844634][ C0] ? run_local_timers+0x120/0x120 [ 168.849646][ C0] rcu_gp_kthread+0xed8/0x1770 [ 168.854408][ C0] kthread+0x332/0x350 [ 168.858462][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 168.863556][ C0] ? kthread_blkcg+0xe0/0xe0 [ 168.868133][ C0] ret_from_fork+0x24/0x30