Backtrace

WARNING: CPU: 12 PID: 229 at drivers/gpu/drm/nouveau/nvkm/subdev/bar/g84.c:35 g84_bar_flush+0xae/0xc0 [nouveau]
Modules linked in: uinput nls_utf8 isofs ccm snd_seq_dummy snd_hrtimer rfcomm 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 nft_chain_nat ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_raw iptable_security ip_set nf_tables nfnetlink ip6table_filter ip6_tables iptable_filter cmac bnep sunrpc vfat fat snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio snd_hda_codec_hdmi intel_rapl_msr ath10k_pci intel_rapl_common ath10k_core snd_hda_intel snd_intel_dspcfg soundwire_intel x86_pkg_temp_thermal ucsi_ccg iTCO_wdt intel_powerclamp soundwire_generic_allocation typec_ucsi intel_pmc_bxt coretemp ee1004 iTCO_vendor_support typec mei_hdcp snd_soc_core kvm_intel snd_compress snd_pcm_dmaengine mac80211 soundwire_cadence kvm snd_hda_codec btusb ath btrtl
 snd_hda_core btbcm btintel ac97_bus snd_hwdep cfg80211 irqbypass bluetooth snd_seq rapl snd_seq_device intel_cstate dell_wmi snd_pcm dell_smbios intel_uncore dcdbas i2c_i801 alienware_wmi dell_wmi_descriptor intel_wmi_thunderbolt wmi_bmof sparse_keymap libarc4 pcspkr idma64 i2c_smbus snd_timer snd ecdh_generic mei_me xpad rfkill ff_memless mei ecc soundcore joydev i2c_nvidia_gpu acpi_pad zram ip_tables hid_logitech_hidpp uas usb_storage hid_logitech_dj i915 nouveau drm_ttm_helper ttm i2c_algo_bit drm_kms_helper crct10dif_pclmul cec crc32_pclmul crc32c_intel mxm_wmi nvme alx drm ghash_clmulni_intel nvme_core mdio video wmi pinctrl_sunrisepoint fuse
CPU: 12 PID: 229 Comm: kworker/12:1 Tainted: G        W         5.11.12-300.fc34.x86_64 #1
Hardware name: Alienware Alienware Aurora R8/0R3FWM, BIOS 1.0.15 01/06/2021
Workqueue: events nouveau_cli_work [nouveau]
RIP: 0010:g84_bar_flush+0xae/0xc0 [nouveau]
Code: 8b 40 10 48 8b 78 10 4c 8b 6f 50 4d 85 ed 75 03 4c 8b 2f e8 e4 fc 22 fb 4c 89 ea 48 c7 c7 30 21 6f c0 48 89 c6 e8 f1 f8 5c fb <0f> 0b eb b8 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 0f 1f 44 00
RSP: 0018:ffffa36f406efa28 EFLAGS: 00010092
RAX: 000000000000001d RBX: ffff8b5b417f2800 RCX: 0000000000000027
RDX: ffff8b629f518ac8 RSI: 0000000000000001 RDI: ffff8b629f518ac0
RBP: ffff8b5b40e1a1c8 R08: 0000000000000000 R09: ffffa36f406ef858
R10: ffffa36f406ef850 R11: ffffffffbcb44f08 R12: 0000000000000296
R13: ffff8b5b423e5c80 R14: ffff8b5b9a2e1440 R15: 0000000000000092
FS:  0000000000000000(0000) GS:ffff8b629f500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000035e1d09efb50 CR3: 000000017623e004 CR4: 00000000003706e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 nv50_instobj_release+0x2f/0xc0 [nouveau]
 nvkm_vmm_unref_pdes+0x165/0x1b0 [nouveau]
 nvkm_vmm_unref_ptes+0x1a9/0x270 [nouveau]
 nvkm_vmm_iter.constprop.0+0x226/0x7e0 [nouveau]
 ? update_sd_lb_stats.constprop.0+0x7ef/0x870
 nvkm_vmm_put_locked+0xfd/0x260 [nouveau]
 ? nvkm_vmm_ptes_sparse+0x1c0/0x1c0 [nouveau]
 ? gf100_vmm_invalidate_pdb+0x30/0x30 [nouveau]
 nvkm_uvmm_mthd+0x3d3/0x760 [nouveau]
 nvkm_ioctl+0xdc/0x180 [nouveau]
 nvif_object_mthd+0x104/0x130 [nouveau]
 ? remove_pagetable+0x8c/0x704
 ? update_load_avg+0x7a/0x5c0
 nvif_vmm_put+0x37/0x50 [nouveau]
 nouveau_vma_del+0x58/0xa0 [nouveau]
 nouveau_gem_object_delete_work+0x26/0x40 [nouveau]
 nouveau_cli_work+0xcc/0x120 [nouveau]
 process_one_work+0x1ec/0x380
 worker_thread+0x53/0x3e0
 ? process_one_work+0x380/0x380
 kthread+0x11b/0x140
 ? kthread_associate_blkcg+0xa0/0xa0
 ret_from_fork+0x22/0x30