Backtrace

WARNING: CPU: 5 PID: 179 at kernel/workqueue.c:2600 check_flush_dependency+0x9d/0x130
Modules linked in: xt_state rfcomm snd_seq_dummy snd_hrtimer xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nft_objref nf_conntrack_tftp bridge stp llc ccm nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nf_tables_set nft_chain_nat nf_tables ebtable_nat ebtable_broute ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c iptable_mangle iptable_raw iptable_security ip_set cmac nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter bnep tun rmi_smbus rmi_core sunrpc vfat fat snd_soc_skl snd_hda_codec_hdmi snd_soc_hdac_hda snd_hda_ext_core snd_soc_skl_ipc snd_soc_sst_ipc x86_pkg_temp_thermal snd_soc_sst_dsp intel_powerclamp coretemp snd_soc_acpi_intel_match snd_soc_acpi snd_hda_codec_realtek snd_soc_core snd_hda_codec_generic kvm_intel snd_compress ac97_bus snd_pcm_dmaengine snd_hda_intel kvm iwlmvm
 snd_hda_codec irqbypass snd_hda_core crct10dif_pclmul iTCO_wdt mac80211 snd_hwdep crc32_pclmul mei_hdcp iTCO_vendor_support snd_seq btusb intel_rapl_msr libarc4 ghash_clmulni_intel btrtl intel_cstate btbcm btintel snd_seq_device uvcvideo intel_uncore videobuf2_vmalloc intel_rapl_perf iwlwifi bluetooth snd_pcm joydev videobuf2_memops videobuf2_v4l2 videobuf2_common wmi_bmof cfg80211 videodev intel_wmi_thunderbolt i2c_i801 snd_timer mei_me thunderbolt mc ecdh_generic processor_thermal_device ecc mei intel_pch_thermal ucsi_acpi intel_rapl_common typec_ucsi intel_xhci_usb_role_switch roles intel_soc_dts_iosf typec thinkpad_acpi ledtrig_audio snd soundcore int3403_thermal rfkill int340x_thermal_zone int3400_thermal acpi_pad acpi_thermal_rel ipmi_devintf ipmi_msghandler zram ip_tables i915 i2c_algo_bit drm_kms_helper nvme drm serio_raw nvme_core e1000e uas crc32c_intel usb_storage wmi video fuse
CPU: 5 PID: 179 Comm: kswapd0 Not tainted 5.3.11-100.fc29.x86_64 #1
Hardware name: LENOVO 20LAS4MR00/20LAS4MR00, BIOS N27ET32W (1.18 ) 11/08/2018
RIP: 0010:check_flush_dependency+0x9d/0x130
Code: 07 00 00 8b b6 30 05 00 00 48 8d 8b b0 00 00 00 49 89 e8 48 c7 c7 78 1f 13 a8 48 89 04 24 c6 05 b7 30 44 01 01 e8 dc 33 fe ff <0f> 0b 48 8b 04 24 eb 10 4c 89 e7 e8 93 81 00 00 41 f6 44 24 25 08
RSP: 0018:ffffbd31c03278e8 EFLAGS: 00010082
RAX: 0000000000000000 RBX: ffff9bcb2480ce00 RCX: 0000000000000000
RDX: 0000000000000063 RSI: ffffffffa8be7883 RDI: 0000000000000046
RBP: ffffffffc05738a0 R08: ffffffffa8be7820 R09: 0000000000028100
R10: 00000632c72ca6a4 R11: 00000000000000b3 R12: ffff9bcb239a9fc0
R13: 0000000000000001 R14: ffff9bcb25828200 R15: 0000000000000f18
FS:  0000000000000000(0000) GS:ffff9bcb25940000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fadc088e000 CR3: 000000019440a005 CR4: 00000000003606e0
Call Trace:
 __flush_work+0x97/0x1c0
 ? try_to_wake_up+0x211/0x640
 ? test_clear_page_writeback+0x151/0x310
 ? work_busy+0x80/0x80
 __cancel_work_timer+0x10a/0x190
 ? _cond_resched+0x15/0x30
 ? synchronize_irq+0x3a/0xa0
 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+0x7d/0xd0 [i915]
 __intel_wakeref_put_last+0x17/0x50 [i915]
 i915_request_retire+0x1a5/0x380 [i915]
 ring_retire_requests+0x4c/0x60 [i915]
 i915_retire_requests+0x3d/0x80 [i915]
 i915_gem_shrink+0xdb/0x560 [i915]
 i915_gem_shrinker_scan+0x61/0x110 [i915]
 do_shrink_slab+0x12c/0x2a0
 shrink_slab+0xac/0x2b0
 shrink_node+0xe7/0x4a0
 balance_pgdat+0x2cb/0x510
 kswapd+0x1f9/0x3d0
 ? finish_wait+0x80/0x80
 ? balance_pgdat+0x510/0x510
 kthread+0x112/0x130
 ? kthread_create_on_node+0x60/0x60
 ret_from_fork+0x35/0x40