Backtrace

WARNING: CPU: 1 PID: 154 at kernel/workqueue.c:2600 check_flush_dependency+0x9d/0x130
Modules linked in: vfat fat uas usb_storage uinput ccm rfcomm xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nf_conntrack_tftp tun bridge stp llc nft_objref nf_conntrack_netbios_ns nf_conntrack_broadcast 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 nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter cmac bnep sunrpc intel_telemetry_pltdrv intel_punit_ipc intel_telemetry_core uvcvideo x86_pkg_temp_thermal intel_powerclamp coretemp videobuf2_vmalloc videobuf2_memops btusb btrtl kvm btbcm btintel videobuf2_v4l2 snd_soc_skl snd_soc_hdac_hda videobuf2_common snd_hda_ext_core bluetooth irqbypass snd_soc_skl_ipc snd_soc_sst_ipc
 snd_soc_sst_dsp snd_soc_acpi_intel_match ath10k_pci videodev ath10k_core hid_sensor_accel_3d ecdh_generic hid_sensor_trigger hid_sensor_iio_common industrialio_triggered_buffer snd_soc_acpi snd_soc_core snd_hda_codec_hdmi ecc crct10dif_pclmul kfifo_buf mc mac80211 snd_hda_codec_realtek snd_compress snd_hda_codec_generic ac97_bus snd_pcm_dmaengine ledtrig_audio industrialio ath crc32_pclmul snd_hda_intel snd_hda_codec snd_hda_core joydev ghash_clmulni_intel hid_multitouch snd_hwdep cfg80211 snd_seq libarc4 snd_seq_device mei_hdcp intel_cstate intel_rapl_msr intel_rapl_perf snd_pcm wdat_wdt processor_thermal_device mei_me ideapad_laptop cros_ec_ishtp sparse_keymap mei intel_rapl_common intel_xhci_usb_role_switch roles snd_timer snd cros_ec_core rfkill int340x_thermal_zone wmi soundcore lpc_ich idma64 elan_i2c intel_lpss_pci intel_lpss i2c_i801 intel_soc_dts_iosf int3400_thermal acpi_thermal_rel zram ip_tables hid_sensor_hub intel_ishtp_loader intel_ishtp_hid hid_logitech_hidpp
 i915 crc32c_intel i2c_algo_bit drm_kms_helper serio_raw sdhci_pci cqhci sdhci drm mmc_core hid_logitech_dj r8169 intel_ish_ipc intel_ishtp i2c_hid video pinctrl_broxton pinctrl_intel fuse
CPU: 1 PID: 154 Comm: kswapd0 Not tainted 5.3.11-100.fc29.x86_64 #1
Hardware name: LENOVO 80U2/Sofia, BIOS 2MCN35WW 12/26/2017
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 8c 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:ffffb09e001c78e8 EFLAGS: 00010082
RAX: 0000000000000000 RBX: ffff99e67b00ae00 RCX: 0000000000000000
RDX: 0000000000000063 RSI: ffffffff8cbe7883 RDI: 0000000000000046
RBP: ffffffffc03a98a0 R08: ffffffff8cbe7820 R09: 0000000000028100
R10: 00000521f37612a8 R11: 000000000000009a R12: ffff99e67aaddc40
R13: 0000000000000001 R14: ffff99e67ba28200 R15: ffffb09e001c7b80
FS:  0000000000000000(0000) GS:ffff99e67ba80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fddb5be6320 CR3: 0000000160d0c000 CR4: 00000000003406e0
Call Trace:
 __flush_work+0x97/0x1c0
 ? try_to_wake_up+0x211/0x640
 ? end_page_writeback+0x43/0x60
 ? 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+0x3c3/0x560 [i915]
 i915_gem_shrinker_scan+0x61/0x110 [i915]
 do_shrink_slab+0x12c/0x2a0
 shrink_slab+0xac/0x2b0
 ? __switch_to_asm+0x34/0x70
 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