Backtrace

WARNING: CPU: 0 PID: 154 at kernel/workqueue.c:2598 check_flush_dependency+0xa0/0x130
Modules linked in: uinput rfcomm xt_CHECKSUM xt_MASQUERADE nf_nat_tftp nf_conntrack_tftp 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 tun bridge iptable_mangle iptable_raw stp llc iptable_security nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c ip_set nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter cmac bnep sunrpc vfat fat snd_soc_sst_bytcr_rt5640 mei_hdcp intel_soc_dts_thermal intel_powerclamp gpio_keys coretemp intel_rapl_msr kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul uvcvideo hci_uart btqca ghash_clmulni_intel btrtl videobuf2_vmalloc btbcm btintel intel_cstate videobuf2_memops bluetooth videobuf2_v4l2 videobuf2_common wdat_wdt sof_acpi_dev snd_sof_intel_byt videodev snd_sof_intel_bdw snd_sof_intel_ipc snd_soc_rt5670 ecdh_generic mc snd_sof
 ecc snd_sof_xtensa_dsp axp288_fuel_gauge snd_soc_rt5651 snd_intel_sst_acpi snd_soc_rt5645 snd_intel_sst_core joydev snd_soc_sst_atom_hifi2_platform r8723bs(C) snd_soc_acpi_intel_match snd_soc_rt5640 snd_soc_acpi axp288_adc snd_soc_rl6231 industrialio extcon_axp288 axp288_charger snd_soc_core roles axp20x_pek mei_txe mei lpc_ich snd_hdmi_lpe_audio snd_compress ac97_bus snd_pcm_dmaengine snd_seq cfg80211 snd_seq_device snd_pcm soc_button_array dw_dmac processor_thermal_device dptf_power intel_rapl_common int3406_thermal int3400_thermal int3403_thermal intel_soc_dts_iosf snd_timer acpi_thermal_rel int340x_thermal_zone intel_int0002_vgpio intel_cht_int33fe snd soundcore rfkill acpi_pad ip_tables i915 i2c_algo_bit mmc_block drm_kms_helper drm crc32c_intel video sdhci_acpi sdhci mmc_core i2c_hid pwm_lpss_platform pwm_lpss fuse
CPU: 0 PID: 154 Comm: kswapd0 Tainted: G         C        5.3.8-300.fc31.x86_64 #1
Hardware name: LENOVO 80R2/Aristotle 11.6, BIOS E2CN15WW 09/12/2018
RIP: 0010:check_flush_dependency+0xa0/0x130
Code: 8d 8a 18 07 00 00 49 89 e8 48 8d 8b b0 00 00 00 4c 89 ca 48 c7 c7 a8 0d 13 9c 48 89 04 24 c6 05 43 2c 44 01 01 e8 9e 2b fe ff <0f> 0b 48 8b 04 24 eb 10 4c 89 e7 e8 80 81 00 00 41 f6 44 24 25 08
RSP: 0000:ffffac7ec01bb8d0 EFLAGS: 00010086
RAX: 0000000000000000 RBX: ffff9657f9c0ae00 RCX: 0000000000000000
RDX: 0000000000000063 RSI: ffffffff9cbe7883 RDI: 0000000000000046
RBP: ffffffffc02d6780 R08: 0000b936295ce102 R09: 0000000000000063
R10: ffffffff9cbe7c00 R11: 000000009cbe786b R12: ffff9657fbb49e00
R13: ffff9657faaad700 R14: 0000000000000001 R15: 0000000000000013
FS:  0000000000000000(0000) GS:ffff9657faa00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f639161e000 CR3: 000000002440a000 CR4: 00000000001006f0
Call Trace:
 __flush_work+0x92/0x1c0
 __cancel_work_timer+0x107/0x190
 ? _cond_resched+0x15/0x30
 ? synchronize_irq+0x3a/0xa0
 ? gen6_write32+0x1b0/0x1c0 [i915]
 gen6_disable_rps_interrupts+0x7f/0xa0 [i915]
 gen6_rps_idle+0x1a/0xe0 [i915]
 intel_gt_park+0x54/0x60 [i915]
 __intel_wakeref_put_last+0x17/0x50 [i915]
 __engine_park+0xbc/0xd0 [i915]
 __intel_wakeref_put_last+0x17/0x50 [i915]
 i915_request_retire+0x1aa/0x370 [i915]
 ring_retire_requests+0x4e/0x60 [i915]
 i915_retire_requests+0x43/0x80 [i915]
 i915_gem_shrink+0x355/0x510 [i915]
 i915_gem_shrinker_scan+0x63/0x110 [i915]
 do_shrink_slab+0x154/0x2c0
 shrink_slab+0xac/0x2b0
 shrink_node+0xf5/0x490
 balance_pgdat+0x2db/0x530
 kswapd+0x1fb/0x3c0
 ? finish_wait+0x80/0x80
 kthread+0xfb/0x130
 ? balance_pgdat+0x530/0x530
 ? kthread_park+0x80/0x80
 ret_from_fork+0x35/0x40