Backtrace

WARNING: CPU: 9 PID: 196 at drivers/gpu/drm/nouveau/nvkm/subdev/bar/g84.c:35 g84_bar_flush+0xae/0xc0 [nouveau]
Modules linked in: 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 intel_rapl_msr soundwire_generic_allocation intel_rapl_common snd_soc_core snd_compress snd_pcm_dmaengine soundwire_cadence edac_mce_amd snd_hda_codec snd_hda_core ac97_bus r8188eu(C) snd_hwdep lib80211 snd_seq kvm cfg80211 snd_seq_device snd_pcm irqbypass rapl rfkill pcspkr snd_timer wmi_bmof sp5100_tco k10temp snd i2c_piix4 joydev soundcore gpio_amdpt gpio_generic acpi_cpufreq zram
 ip_tables dm_crypt nouveau video mxm_wmi i2c_algo_bit drm_ttm_helper ttm drm_kms_helper cec drm crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel ccp r8169 nvme nvme_core wmi pinctrl_amd fuse
CPU: 9 PID: 196 Comm: kworker/9:1 Tainted: G         C        5.11.12-300.fc34.x86_64 #1
Hardware name: Gigabyte Technology Co., Ltd. A320M-S2H/A320M-S2H-CF, BIOS F53 01/05/2021
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 4c 2b cd 4c 89 ea 48 c7 c7 30 d1 66 c0 48 89 c6 e8 f1 48 65 cd <0f> 0b eb b8 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 0f 1f 44 00
RSP: 0018:ffffac5040653aa8 EFLAGS: 00010096
RAX: 000000000000001d RBX: ffff896c88f6d400 RCX: 0000000000000027
RDX: ffff896d96a58ac8 RSI: 0000000000000001 RDI: ffff896d96a58ac0
RBP: ffff896c908d4b48 R08: 0000000000000000 R09: ffffac50406538d8
R10: ffffac50406538d0 R11: ffffffff8eb44f08 R12: 0000000000000292
R13: ffff896c814ade30 R14: ffff896c950fd7e0 R15: ffff896cc515a780
FS:  0000000000000000(0000) GS:ffff896d96a40000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00003138dea11150 CR3: 0000000146aa6000 CR4: 0000000000350ee0
Call Trace:
 nv50_instobj_release+0x2f/0xc0 [nouveau]
 nvkm_vmm_iter.constprop.0+0x72f/0x7e0 [nouveau]
 ? update_load_avg+0x7a/0x5c0
 ? dequeue_entity+0xc3/0x460
 nvkm_vmm_put_locked+0xfd/0x260 [nouveau]
 ? nvkm_vmm_ptes_sparse+0x1c0/0x1c0 [nouveau]
 ? gp100_vmm_pd0_sparse+0xc0/0xc0 [nouveau]
 nvkm_uvmm_mthd+0x3d3/0x760 [nouveau]
 nvkm_ioctl+0xdc/0x180 [nouveau]
 nvif_object_mthd+0x104/0x130 [nouveau]
 ? 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