Backtrace

WARNING: CPU: 2 PID: 155 at kernel/workqueue.c:2598 check_flush_dependency+0xa0/0x130
Modules linked in: uas usb_storage uinput rfcomm ccm xt_CHECKSUM xt_MASQUERADE nf_nat_tftp nf_conntrack_tftp tun bridge stp llc 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 libcrc32c ip_set nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter cmac bnep sunrpc vfat fat snd_soc_skl snd_soc_hdac_hda snd_hda_ext_core snd_soc_skl_ipc snd_soc_sst_ipc x86_pkg_temp_thermal intel_powerclamp coretemp snd_soc_sst_dsp kvm_intel snd_soc_acpi_intel_match snd_soc_acpi iwlmvm snd_soc_core snd_hda_codec_hdmi kvm mac80211 snd_hda_codec_realtek snd_hda_codec_generic snd_compress ac97_bus snd_pcm_dmaengine snd_hda_intel libarc4 iTCO_wdt iTCO_vendor_support ppdev mei_wdt mei_hdcp snd_hda_codec
 uvcvideo iwlwifi intel_rapl_msr irqbypass crct10dif_pclmul videobuf2_vmalloc crc32_pclmul snd_hda_core dell_laptop ledtrig_audio btusb snd_hwdep videobuf2_memops btrtl snd_seq videobuf2_v4l2 btbcm dell_smm_hwmon btintel ghash_clmulni_intel videobuf2_common intel_cstate snd_seq_device cfg80211 intel_uncore videodev bluetooth intel_rapl_perf snd_pcm rtsx_pci_ms dell_wmi mc memstick dell_smbios joydev dcdbas ecdh_generic sparse_keymap wmi_bmof snd_timer dell_wmi_descriptor ecc snd soundcore i2c_i801 intel_xhci_usb_role_switch roles parport_pc parport processor_thermal_device mei_me dell_rbtn intel_rapl_common int3403_thermal mei int3400_thermal acpi_thermal_rel intel_soc_dts_iosf acpi_pad int340x_thermal_zone intel_pch_thermal rfkill ip_tables i915 rtsx_pci_sdmmc mmc_core i2c_algo_bit drm_kms_helper e1000e crc32c_intel drm serio_raw rtsx_pci wmi video fuse
CPU: 2 PID: 155 Comm: kswapd0 Tainted: G        W         5.3.16-300.fc31.x86_64 #1
Hardware name: Dell Inc. Latitude E7470/, BIOS 1.22.8 10/08/2019
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 b8 14 13 8a 48 89 04 24 c6 05 04 2b 44 01 01 e8 6e 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: 0018:ffffa97ec01e38d0 EFLAGS: 00010086
RAX: 0000000000000000 RBX: ffff8d308480ae00 RCX: 0000000000000000
RDX: 0000000000000063 RSI: ffffffff8abe8883 RDI: 0000000000000046
RBP: ffffffffc05287a0 R08: 0002ed2091ed6eda R09: 0000000000000063
R10: ffffffff8abe8c00 R11: 000000008abe886b R12: ffff8d3083da3f80
R13: ffff8d3085a2d700 R14: 0000000000000001 R15: 0000000000000013
FS:  0000000000000000(0000) GS:ffff8d3085b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002a9f0c492000 CR3: 000000022b0ac005 CR4: 00000000003606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __flush_work+0x92/0x1c0
 ? __switch_to_asm+0x40/0x70
 ? __switch_to_asm+0x34/0x70
 __cancel_work_timer+0x107/0x190
 ? _cond_resched+0x15/0x30
 ? synchronize_irq+0x3a/0xa0
 ? _raw_spin_lock_irqsave+0x32/0x40
 ? fwtable_write32+0x4c/0x210 [i915]
 gen6_disable_rps_interrupts+0x7f/0xa0 [i915]
 gen6_rps_idle+0x1a/0xe0 [i915]
 intel_gt_park+0x81/0x90 [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