Backtrace

WARNING: CPU: 2 PID: 63976 at kernel/sched/fair.c:381 enqueue_task_fair+0x239/0x4c0
Modules linked in: xt_comment xt_mark nf_tables xt_nat veth xt_MASQUERADE nf_conntrack_netlink xt_addrtype br_netfilter bridge stp llc overlay nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT ip6t_REJECT nf_reject_ipv6 ip6t_rpfilter ipt_REJECT nf_reject_ipv4 xt_conntrack ebtable_nat ebtable_broute ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat iptable_mangle iptable_raw iptable_security nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter ip_tables rfcomm ccm libcrc32c ip_set nfnetlink cmac bnep sunrpc vfat fat x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm iwlmvm mei_hdcp iTCO_wdt intel_rapl_msr mac80211 snd_hda_codec_conexant iTCO_vendor_support snd_hda_codec_generic uvcvideo ledtrig_audio snd_hda_codec_hdmi videobuf2_vmalloc irqbypass videobuf2_memops snd_hda_intel videobuf2_v4l2 snd_hda_codec videobuf2_common crct10dif_pclmul libarc4 crc32_pclmul videodev snd_hda_core
 iwlwifi ghash_clmulni_intel snd_hwdep intel_cstate snd_seq intel_uncore btusb snd_seq_device asus_nb_wmi mc btrtl intel_rapl_perf asus_wmi btbcm sparse_keymap joydev snd_pcm btintel bluetooth cfg80211 i2c_i801 snd_timer processor_thermal_device intel_pch_thermal ecdh_generic ecc mei_me snd intel_rapl_common mei rfkill soundcore intel_soc_dts_iosf lpc_ich acpi_als kfifo_buf int3402_thermal int3400_thermal int340x_thermal_zone industrialio acpi_thermal_rel asus_wireless i915 nouveau ttm i2c_algo_bit drm_kms_helper mxm_wmi crc32c_intel drm serio_raw wmi video fuse [last unloaded: ip_tables]
CPU: 2 PID: 63976 Comm: kubelet Not tainted 5.3.7-301.fc31.x86_64 #1
Hardware name: ASUSTeK COMPUTER INC. UX303LN/UX303LN, BIOS UX303LN.204 09/01/2014
RIP: 0010:enqueue_task_fair+0x239/0x4c0
Code: 60 09 00 00 0f 84 ba fe ff ff 80 3d 0d 2b 42 01 00 0f 85 ad fe ff ff 48 c7 c7 e8 26 13 ba c6 05 f9 2a 42 01 01 e8 05 2a fc ff <0f> 0b e9 93 fe ff ff 4d 8b bc 24 58 09 00 00 49 8d 9c 24 50 09 00
RSP: 0018:ffffb3498a0e7a68 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 000000000000002d RSI: ffffffffbabe784d RDI: 0000000000000046
RBP: ffff9ec366c28900 R08: 00000304593b1b04 R09: 000000000000002d
R10: 00000000000164e8 R11: 0000000000000004 R12: ffff9ec366c28880
R13: ffff9ec366c28880 R14: ffffb3498a0e7b08 R15: ffff9ec366c28880
FS:  00007efc8d7fa700(0000) GS:ffff9ec366d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6b38000010 CR3: 00000002105c0002 CR4: 00000000001606e0
Call Trace:
 activate_task+0x7a/0x160
 ttwu_do_activate+0x45/0x60
 try_to_wake_up+0x1f1/0x660
 ? __switch_to_asm+0x34/0x70
 ? __switch_to_asm+0x40/0x70
 __wake_up_common+0x80/0x180
 __wake_up_common_lock+0x7c/0xc0
 ep_poll_callback+0x140/0x2c0
 __wake_up_common+0x80/0x180
 __wake_up_common_lock+0x7c/0xc0
 sock_def_readable+0x3c/0x70
 unix_stream_sendmsg+0x1b0/0x3d0
 sock_sendmsg+0x5e/0x60
 sock_write_iter+0x8f/0xf0
 new_sync_write+0x12d/0x1d0
 vfs_write+0xb6/0x1a0
 ksys_write+0x5f/0xe0
 do_syscall_64+0x5f/0x1a0
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x493bfb
Code: fe ff eb bd e8 66 e8 fd ff e9 61 ff ff ff cc e8 fb b1 fd ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30
RSP: 002b:000000c000a6ec00 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000c000058000 RCX: 0000000000493bfb
RDX: 0000000000000049 RSI: 000000c0016cf200 RDI: 0000000000000002
RBP: 000000c000a6ec50 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 000000c000a9a000
R13: 0000000000000000 R14: 0000000004e4e518 R15: 0000000000000000