[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 47.161347][ T23] audit: type=1800 audit(1575417515.057:25): pid=8197 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 47.180766][ T23] audit: type=1800 audit(1575417515.057:26): pid=8197 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 47.238840][ T23] audit: type=1800 audit(1575417515.057:27): pid=8197 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 '10.128.10.57' (ECDSA) to the list of known hosts. 2019/12/03 23:58:44 fuzzer started 2019/12/03 23:58:45 dialing manager at 10.128.0.26:42111 2019/12/03 23:58:45 syscalls: 2689 2019/12/03 23:58:45 code coverage: enabled 2019/12/03 23:58:45 comparison tracing: enabled 2019/12/03 23:58:45 extra coverage: extra coverage is not supported by the kernel 2019/12/03 23:58:45 setuid sandbox: enabled 2019/12/03 23:58:45 namespace sandbox: enabled 2019/12/03 23:58:45 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 23:58:45 fault injection: enabled 2019/12/03 23:58:45 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 23:58:45 net packet injection: enabled 2019/12/03 23:58:45 net device setup: enabled 2019/12/03 23:58:45 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 23:58:45 devlink PCI setup: PCI device 0000:00:10.0 is not available 23:58:46 executing program 0: syz_init_net_socket$llc(0x1a, 0x0, 0x0) r0 = syz_open_procfs(0x0, &(0x7f0000000140)='net/wireless\x00') ioctl$SG_SET_KEEP_ORPHAN(r0, 0x2287, 0x0) perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7f, 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, 0x0, 0x0, 0x0, 0x0, 0x8000}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) kexec_load(0x0, 0x10, &(0x7f00000005c0)=[{0x0, 0x0, 0x0, 0x3e0000}], 0x0) openat$apparmor_thread_exec(0xffffffffffffff9c, 0x0, 0x2, 0x0) fcntl$setpipe(0xffffffffffffffff, 0x407, 0x0) perf_event_open(0x0, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0) ioctl$KVM_GET_LAPIC(r0, 0x8400ae8e, &(0x7f0000000600)={"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"}) epoll_ctl$EPOLL_CTL_ADD(0xffffffffffffffff, 0x1, 0xffffffffffffffff, 0x0) fsetxattr$security_capability(0xffffffffffffffff, 0x0, 0x0, 0x0, 0x1) dup(0xffffffffffffffff) openat$sequencer(0xffffffffffffff9c, 0x0, 0x0, 0x0) openat$sequencer(0xffffffffffffff9c, &(0x7f0000000100)='/dev/sequencer\x00', 0x0, 0x0) openat$sequencer(0xffffffffffffff9c, &(0x7f0000000100)='/dev/sequencer\x00', 0x0, 0x0) preadv(0xffffffffffffffff, 0x0, 0x0, 0x0) preadv(0xffffffffffffffff, &(0x7f00000004c0)=[{0x0}, {&(0x7f0000000400)=""/168, 0x3}], 0x2, 0x0) openat$sequencer(0xffffffffffffff9c, &(0x7f0000000100)='/dev/sequencer\x00', 0x0, 0x0) 23:58:46 executing program 1: r0 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x5) r1 = dup2(r0, r0) ioctl$sock_bt_cmtp_CMTPCONNADD(r1, 0x400443c8, &(0x7f0000000180)) syzkaller login: [ 59.025388][ T8361] IPVS: ftp: loaded support on port[0] = 21 23:58:47 executing program 2: r0 = openat$uhid(0xffffffffffffff9c, &(0x7f0000000080)='/dev/uhid\x00', 0x0, 0x0) poll(&(0x7f0000000180)=[{r0}], 0x1, 0x2) [ 59.186136][ T8363] IPVS: ftp: loaded support on port[0] = 21 [ 59.224296][ T8361] chnl_net:caif_netlink_parms(): no params data found [ 59.293733][ T8361] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.309341][ T8361] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.328682][ T8361] device bridge_slave_0 entered promiscuous mode [ 59.337181][ T8361] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.358540][ T8361] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.378735][ T8361] device bridge_slave_1 entered promiscuous mode [ 59.464468][ T8361] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.481410][ T8363] chnl_net:caif_netlink_parms(): no params data found [ 59.496698][ T8367] IPVS: ftp: loaded support on port[0] = 21 [ 59.504210][ T8361] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link 23:58:47 executing program 3: perf_event_open(&(0x7f0000000040)={0x2, 0x70, 0x3ea, 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) r0 = openat$rtc(0xffffffffffffff9c, &(0x7f0000000100)='/dev/rtc0\x00', 0x0, 0x0) ioctl$RTC_ALM_SET(r0, 0x40247007, &(0x7f0000000000)) [ 59.564725][ T8361] team0: Port device team_slave_0 added [ 59.597117][ T8361] team0: Port device team_slave_1 added [ 59.608678][ T8363] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.615836][ T8363] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.640049][ T8363] device bridge_slave_0 entered promiscuous mode [ 59.682644][ T8363] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.690473][ T8363] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.700331][ T8363] device bridge_slave_1 entered promiscuous mode [ 59.750471][ T8361] device hsr_slave_0 entered promiscuous mode 23:58:47 executing program 4: bpf$PROG_LOAD(0x5, &(0x7f0000000100)={0xe, 0x4, &(0x7f0000000000)=@framed={{}, [@call={0x63, 0x11, 0x22}]}, &(0x7f00000000c0)='GPL\x00', 0x4, 0x1000, &(0x7f0000000200)=""/4096, 0x0, 0x0, [], 0x0, 0x0, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0}, 0x70) [ 59.798133][ T8361] device hsr_slave_1 entered promiscuous mode [ 59.876955][ T8370] IPVS: ftp: loaded support on port[0] = 21 [ 59.935671][ T8363] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.960851][ T8363] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link 23:58:47 executing program 5: r0 = open(&(0x7f0000000000)='.\x00', 0x0, 0x0) ioctl$EXT4_IOC_SETFLAGS(r0, 0x40086602, &(0x7f00000000c0)=0x40000000) [ 60.034589][ T8363] team0: Port device team_slave_0 added [ 60.084065][ T8373] IPVS: ftp: loaded support on port[0] = 21 [ 60.090568][ T8367] chnl_net:caif_netlink_parms(): no params data found [ 60.102701][ T8361] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 60.150629][ T8363] team0: Port device team_slave_1 added [ 60.156396][ T8361] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 60.211506][ T8361] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 60.272722][ T8361] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 60.360058][ T8375] IPVS: ftp: loaded support on port[0] = 21 [ 60.440459][ T8363] device hsr_slave_0 entered promiscuous mode [ 60.488121][ T8363] device hsr_slave_1 entered promiscuous mode [ 60.537947][ T8363] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.595757][ T8367] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.605575][ T8367] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.613549][ T8367] device bridge_slave_0 entered promiscuous mode [ 60.644543][ T8367] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.652080][ T8367] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.660742][ T8367] device bridge_slave_1 entered promiscuous mode [ 60.717444][ T8367] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.741658][ T8363] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 60.835663][ T8363] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 60.901982][ T8363] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 60.950083][ T8367] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.973976][ T8363] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 61.026832][ T8373] chnl_net:caif_netlink_parms(): no params data found [ 61.035924][ T8370] chnl_net:caif_netlink_parms(): no params data found [ 61.064765][ T8361] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.094530][ T8367] team0: Port device team_slave_0 added [ 61.102646][ T8367] team0: Port device team_slave_1 added [ 61.121298][ T8375] chnl_net:caif_netlink_parms(): no params data found [ 61.158567][ T8361] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.232293][ T8367] device hsr_slave_0 entered promiscuous mode [ 61.288130][ T8367] device hsr_slave_1 entered promiscuous mode [ 61.327971][ T8367] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.338529][ T8369] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.346626][ T8369] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.355265][ T8370] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.362504][ T8370] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.370239][ T8370] device bridge_slave_0 entered promiscuous mode [ 61.377846][ T8370] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.384896][ T8370] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.392771][ T8370] device bridge_slave_1 entered promiscuous mode [ 61.431420][ T8373] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.441441][ T8373] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.449883][ T8373] device bridge_slave_0 entered promiscuous mode [ 61.465094][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 61.473764][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.482559][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.490011][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.498666][ T8375] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.505746][ T8375] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.515988][ T8375] device bridge_slave_0 entered promiscuous mode [ 61.524635][ T8370] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.535877][ T8370] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.545175][ T8373] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.555302][ T8373] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.563564][ T8373] device bridge_slave_1 entered promiscuous mode [ 61.576680][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 61.585500][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 61.594388][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.602911][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.610256][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.619053][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 61.628311][ T8375] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.635346][ T8375] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.643798][ T8375] device bridge_slave_1 entered promiscuous mode [ 61.685983][ T8370] team0: Port device team_slave_0 added [ 61.704450][ T8375] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.718658][ T8375] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.732775][ T8370] team0: Port device team_slave_1 added [ 61.740678][ T8377] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.760687][ T8373] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.786087][ T8375] team0: Port device team_slave_0 added [ 61.794188][ T8375] team0: Port device team_slave_1 added [ 61.800879][ T8369] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 61.812297][ T8369] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.821733][ T8369] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 61.830441][ T8369] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.839061][ T8369] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 61.847290][ T8369] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 61.855681][ T8369] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 61.864147][ T8369] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 61.873938][ T8369] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.882288][ T8361] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 61.891759][ T8373] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.913159][ T8367] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 61.960171][ T8367] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 62.000104][ T8367] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 62.040315][ T8367] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 62.122531][ T8373] team0: Port device team_slave_0 added [ 62.151672][ T8363] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.190392][ T8370] device hsr_slave_0 entered promiscuous mode [ 62.228174][ T8370] device hsr_slave_1 entered promiscuous mode [ 62.267913][ T8370] debugfs: Directory 'hsr0' with parent '/' already present! [ 62.276583][ T8373] team0: Port device team_slave_1 added [ 62.293221][ T8377] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 62.300754][ T8377] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 62.340517][ T8375] device hsr_slave_0 entered promiscuous mode [ 62.388599][ T8375] device hsr_slave_1 entered promiscuous mode [ 62.428306][ T8375] debugfs: Directory 'hsr0' with parent '/' already present! [ 62.439856][ T8361] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 62.475190][ T8363] 8021q: adding VLAN 0 to HW filter on device team0 [ 62.494551][ T8377] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 62.502395][ T8377] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 62.540168][ T8373] device hsr_slave_0 entered promiscuous mode [ 62.578167][ T8373] device hsr_slave_1 entered promiscuous mode [ 62.637865][ T8373] debugfs: Directory 'hsr0' with parent '/' already present! [ 62.682770][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 62.703778][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 62.725392][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.732560][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.740861][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 62.749684][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.758255][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.765289][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.804582][ T8367] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.850900][ T8367] 8021q: adding VLAN 0 to HW filter on device team0 [ 62.881167][ T8375] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 167.777674][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 167.784454][ C0] rcu: 0-...!: (1 GPs behind) idle=ec2/1/0x4000000000000002 softirq=11455/11456 fqs=37 [ 167.794517][ C0] (t=10501 jiffies g=6557 q=289) [ 167.799536][ C0] rcu: rcu_preempt kthread starved for 10428 jiffies! g6557 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 167.810728][ C0] rcu: RCU grace-period kthread stack dump: [ 167.816875][ C0] rcu_preempt R running task 29104 10 2 0x80004000 [ 167.825245][ C0] Call Trace: [ 167.828628][ C0] __schedule+0x9a0/0xcc0 [ 167.832979][ C0] schedule+0x181/0x210 [ 167.837134][ C0] schedule_timeout+0x14f/0x240 [ 167.842073][ C0] ? run_local_timers+0x120/0x120 [ 167.847104][ C0] rcu_gp_kthread+0xed8/0x1770 [ 167.851866][ C0] kthread+0x332/0x350 [ 167.855929][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 167.861028][ C0] ? kthread_blkcg+0xe0/0xe0 [ 167.865607][ C0] ret_from_fork+0x24/0x30 [ 167.870039][ C0] NMI backtrace for cpu 0 [ 167.874358][ C0] CPU: 0 PID: 8332 Comm: udevd Not tainted 5.4.0-syzkaller #0 [ 167.881794][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 167.891836][ C0] Call Trace: [ 167.895109][ C0] [ 167.898056][ C0] dump_stack+0x1fb/0x318 [ 167.902379][ C0] nmi_cpu_backtrace+0xaf/0x1a0 [ 167.907216][ C0] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 167.913356][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 167.919407][ C0] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 167.925385][ C0] arch_trigger_cpumask_backtrace+0x10/0x20 [ 167.931264][ C0] rcu_dump_cpu_stacks+0x15a/0x220 [ 167.936374][ C0] rcu_sched_clock_irq+0xe25/0x1ad0 [ 167.941562][ C0] ? trace_hardirqs_off+0x74/0x80 [ 167.946577][ C0] update_process_times+0x12d/0x180 [ 167.951764][ C0] tick_sched_timer+0x263/0x420 [ 167.956597][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 167.962130][ C0] __hrtimer_run_queues+0x403/0x840 [ 167.967330][ C0] hrtimer_interrupt+0x38c/0xda0 [ 167.972270][ C0] ? debug_smp_processor_id+0x9/0x20 [ 167.977555][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 167.983108][ C0] apic_timer_interrupt+0xf/0x20 [ 167.988055][ C0] [ 167.991012][ C0] RIP: 0010:__memcg_kmem_uncharge+0x24/0x2e0 [ 167.996992][ C0] Code: 1f 80 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53 50 89 f3 49 89 fc 48 b8 00 00 00 00 00 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 d8 f4 fa ff 4d 8b [ 168.016598][ C0] RSP: 0018:ffffc90001d37720 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 168.025110][ C0] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff888096582200 [ 168.033230][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0001affac0 [ 168.041211][ C0] RBP: ffffc90001d37750 R08: dffffc0000000000 R09: fffffbfff120248a [ 168.049204][ C0] R10: fffffbfff120248a R11: 0000000000000000 R12: ffffea0001affac0 [ 168.057191][ C0] R13: ffffea0001affaf8 R14: ffffea0001affaf8 R15: ffff8880a8f1fa28 [ 168.065460][ C0] ? free_thread_stack+0x124/0x590 [ 168.070593][ C0] free_thread_stack+0x12e/0x590 [ 168.075548][ C0] put_task_stack+0xa3/0x130 [ 168.080148][ C0] finish_task_switch+0x3f1/0x550 [ 168.085171][ C0] __schedule+0x9a8/0xcc0 [ 168.089512][ C0] schedule+0x181/0x210 [ 168.093664][ C0] schedule_hrtimeout_range_clock+0x3c7/0x510 [ 168.099751][ C0] ? trace_hrtimer_expire_exit+0x2d0/0x2d0 [ 168.105687][ C0] schedule_hrtimeout_range+0x2a/0x40 [ 168.111064][ C0] poll_schedule_timeout+0x11c/0x1c0 [ 168.116345][ C0] do_sys_poll+0x82f/0x1240 [ 168.120865][ C0] ? debug_object_activate+0x2f7/0x6f0 [ 168.126347][ C0] ? debug_object_active_state+0x1e3/0x4a0 [ 168.132157][ C0] ? __lock_acquire+0xc75/0x1be0 [ 168.137112][ C0] ? __x32_compat_sys_ppoll_time64+0xd0/0xd0 [ 168.143113][ C0] ? trace_hardirqs_on+0x74/0x80 [ 168.148055][ C0] ? ktime_get_ts64+0x6e/0x2c0 [ 168.152817][ C0] ? ktime_get_ts64+0x6e/0x2c0 [ 168.157601][ C0] ? read_seqcount_begin+0x125/0x1c0 [ 168.162886][ C0] ? trace_hardirqs_on+0x74/0x80 [ 168.167827][ C0] ? ktime_get_ts64+0x6e/0x2c0 [ 168.172588][ C0] ? read_seqcount_begin+0x17a/0x1c0 [ 168.177866][ C0] ? ktime_get_ts64+0x240/0x2c0 [ 168.182706][ C0] ? timespec64_add_safe+0x171/0x1b0 [ 168.188011][ C0] __se_sys_poll+0x1b0/0x360 [ 168.192635][ C0] __x64_sys_poll+0x7b/0x90 [ 168.197133][ C0] do_syscall_64+0xf7/0x1c0 [ 168.201678][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 168.207743][ C0] RIP: 0033:0x7fdde205d678 [ 168.212155][ C0] Code: 11 48 83 c8 ff eb ea 90 90 90 90 90 90 90 90 90 90 90 48 83 ec 28 8b 05 82 8f 2b 00 85 c0 75 17 48 63 d2 b8 07 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 48 83 c4 28 c3 89 54 24 08 48 89 74 24 10 [ 168.231767][ C0] RSP: 002b:00007ffee096fc50 EFLAGS: 00000246 ORIG_RAX: 0000000000000007 [ 168.240317][ C0] RAX: ffffffffffffffda RBX: 20c49ba5e353f7cf RCX: 00007fdde205d678 [ 168.248310][ C0] RDX: 000000000000ee2c RSI: 0000000000000001 RDI: 00007ffee096fd10 [ 168.256274][ C0] RBP: 0000000000000000 R08: 00007ffee096fc60 R09: 00007ffee09a20b8 [ 168.264995][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000239ba70 [ 168.272991][ C0] R13: 00000000000020be R14: 00007ffee096fce4 R15: 000000000239a250