Backtrace

WARNING: CPU: 7 PID: 177 at kernel/workqueue.c:2600 check_flush_dependency+0x9d/0x130
Modules linked in: binfmt_misc snd_seq_dummy snd_hrtimer rfcomm xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nft_objref nf_conntrack_tftp bridge stp llc ccm nouveau nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib vboxnetadp(OE) vboxnetflt(OE) nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject ttm vboxdrv(OE) 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 ppdev parport_pc parport vmw_vsock_vmci_transport vsock vmw_vmci cmac bnep sunrpc vfat fat intel_rapl_msr intel_rapl_common ath3k x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel uvcvideo kvm btusb videobuf2_vmalloc ath9k btrtl videobuf2_memops videobuf2_v4l2 btbcm ath9k_common videobuf2_common snd_hda_codec_realtek
 ath9k_hw btintel snd_hda_codec_generic ledtrig_audio snd_hda_codec_hdmi bluetooth mei_hdcp videodev snd_hda_intel snd_hda_codec irqbypass iTCO_wdt mac80211 iTCO_vendor_support mc snd_hda_core crct10dif_pclmul ecdh_generic ecc crc32_pclmul snd_hwdep snd_seq ghash_clmulni_intel snd_seq_device intel_cstate ath snd_pcm intel_uncore asus_nb_wmi intel_rapl_perf cfg80211 snd_timer asus_wmi i2c_i801 joydev snd mei_me sparse_keymap rfkill soundcore libarc4 mei ie31200_edac lpc_ich asus_wireless ipmi_devintf ipmi_msghandler ip_tables i915 i2c_algo_bit drm_kms_helper mxm_wmi drm crc32c_intel serio_raw alx mdio wmi video uas usb_storage fuse
CPU: 7 PID: 177 Comm: kswapd0 Tainted: P           OE     5.3.11-100.fc29.x86_64 #1
Hardware name: ASUSTeK COMPUTER INC. G750JZA/G750JZA, BIOS G750JZA.205 02/20/2014
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 a7 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:ffffb872402a38e8 EFLAGS: 00010082
RAX: 0000000000000000 RBX: ffff931e6240ce00 RCX: 0000000000000000
RDX: 0000000000000063 RSI: ffffffffa7be7883 RDI: 0000000000000046
RBP: ffffffffc05178a0 R08: ffffffffa7be7820 R09: 0000000000028100
R10: 000001255582ab7c R11: 00000000000000b1 R12: ffff931e615f5dc0
R13: 0000000000000001 R14: ffff931e65aa8200 R15: 000000000000026c
FS:  0000000000000000(0000) GS:ffff931e65bc0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbcb016b000 CR3: 000000065840a001 CR4: 00000000001606e0
Call Trace:
 __flush_work+0x97/0x1c0
 ? try_to_wake_up+0x211/0x640
 ? free_pcppages_bulk+0x475/0x800
 ? 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
 ? __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