Backtrace

WARNING: CPU: 1 PID: 31344 at drivers/gpu/drm/nouveau/nvkm/subdev/bar/g84.c:35 g84_bar_flush+0xae/0xc0 [nouveau]
Modules linked in: uinput ccm snd_seq_dummy snd_hrtimer 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 sunrpc vfat fat snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio snd_hda_codec_hdmi snd_hda_intel snd_intel_dspcfg soundwire_intel soundwire_generic_allocation snd_soc_core snd_compress ath9k_htc snd_pcm_dmaengine soundwire_cadence ath9k_common snd_hda_codec iwlmvm snd_usb_audio ath9k_hw snd_usbmidi_lib snd_hda_core intel_rapl_msr ac97_bus intel_rapl_common snd_hwdep snd_rawmidi x86_pkg_temp_thermal intel_powerclamp coretemp snd_seq mac80211 rapl iwlwifi intel_cstate snd_seq_device iTCO_wdt ath
 cfg80211 snd_pcm intel_uncore hp_wmi intel_pmc_bxt snd_timer snd iTCO_vendor_support pcspkr sparse_keymap ee1004 mei_hdcp mc mei_wdt libarc4 rfkill soundcore wmi_bmof i2c_i801 joydev intel_pch_thermal i2c_smbus mei_me mei acpi_pad tpm_infineon zram ip_tables i915 nouveau mxm_wmi drm_ttm_helper ttm i2c_algo_bit drm_kms_helper cec crct10dif_pclmul drm crc32_pclmul e1000e crc32c_intel ghash_clmulni_intel serio_raw wmi video fuse
CPU: 1 PID: 31344 Comm: kworker/1:0 Tainted: G        W         5.11.12-300.fc34.x86_64 #1
Hardware name: HP HP ProDesk 600 G2 SFF/805D, BIOS N02 Ver. 02.14 05/30/2016
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 dc 31 c5 4c 89 ea 48 c7 c7 30 41 60 c0 48 89 c6 e8 f1 d8 6b c5 <0f> 0b eb b8 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 0f 1f 44 00
RSP: 0018:ffffb6b242127aa8 EFLAGS: 00010096
RAX: 000000000000001d RBX: ffff904808818800 RCX: 0000000000000027
RDX: ffff904b3f498ac8 RSI: 0000000000000001 RDI: ffff904b3f498ac0
RBP: ffff90480bd45588 R08: 0000000000000000 R09: ffffb6b2421278d8
R10: ffffb6b2421278d0 R11: ffffffff86b44f08 R12: 0000000000000292
R13: ffff904800fbf200 R14: ffff904830cfa960 R15: ffff90481f92e740
FS:  0000000000000000(0000) GS:ffff904b3f480000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd5d1012000 CR3: 0000000169874003 CR4: 00000000003706e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 nv50_instobj_release+0x2f/0xc0 [nouveau]
 nvkm_vmm_iter.constprop.0+0x72f/0x7e0 [nouveau]
 ? dequeue_entity+0xc3/0x460
 ? __schedule+0x2ba/0x900
 nvkm_vmm_put_locked+0xfd/0x260 [nouveau]
 ? nvkm_vmm_ptes_sparse+0x1c0/0x1c0 [nouveau]
 ? nv44_vmm_new+0xc0/0xc0 [nouveau]
 nvkm_uvmm_mthd+0x3d3/0x760 [nouveau]
 ? __prepare_to_swait+0x4b/0x70
 ? io_schedule_timeout+0x4c/0x70
 nvkm_ioctl+0xdc/0x180 [nouveau]
 nvif_object_mthd+0x104/0x130 [nouveau]
 ? scsi_eh_ready_devs+0xbd0/0xc60
 ? 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