Backtrace

WARNING: CPU: 7 PID: 356 at drivers/gpu/drm/nouveau/nvkm/subdev/bar/g84.c:35 g84_bar_flush+0xae/0xc0 [nouveau]
Modules linked in: uas usb_storage uinput snd_seq_dummy snd_hrtimer rfcomm ccm 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 snd_soc_skl_hda_dsp snd_soc_hdac_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_soc_dmic snd_sof_pci snd_sof_intel_hda_common snd_sof_intel_hda snd_sof_intel_byt snd_sof_intel_ipc snd_sof snd_sof_xtensa_dsp snd_soc_skl sunrpc snd_soc_hdac_hda snd_hda_ext_core snd_soc_sst_ipc snd_soc_sst_dsp snd_soc_acpi_intel_match snd_hda_codec_hdmi snd_soc_acpi ath10k_pci snd_hda_intel ath10k_core snd_intel_dspcfg soundwire_intel soundwire_generic_allocation snd_soc_core
 x86_pkg_temp_thermal intel_powerclamp coretemp vfat snd_compress fat snd_pcm_dmaengine soundwire_cadence mac80211 kvm_intel snd_hda_codec snd_hda_core btusb ac97_bus snd_hwdep ath btrtl kvm snd_seq btbcm iTCO_wdt uvcvideo intel_pmc_bxt ee1004 iTCO_vendor_support videobuf2_vmalloc btintel snd_seq_device mei_hdcp dell_laptop videobuf2_memops intel_rapl_msr cfg80211 bluetooth irqbypass videobuf2_v4l2 ledtrig_audio snd_pcm rapl videobuf2_common intel_cstate snd_timer intel_uncore videodev pcspkr ecdh_generic libarc4 dell_wmi dell_smbios dcdbas rfkill mc i2c_i801 alienware_wmi snd dell_wmi_descriptor wmi_bmof i2c_smbus dell_wmi_sysman ecc mei_me soundcore processor_thermal_device processor_thermal_rfim joydev processor_thermal_mbox mei idma64 processor_thermal_rapl intel_rapl_common intel_soc_dts_iosf intel_pch_thermal int3403_thermal intel_hid int3402_thermal int3400_thermal int340x_thermal_zone acpi_thermal_rel acpi_tad sparse_keymap acpi_pad zram ip_tables i915 nouveau
 hid_multitouch drm_ttm_helper ttm i2c_algo_bit crct10dif_pclmul drm_kms_helper crc32_pclmul crc32c_intel mxm_wmi cec ghash_clmulni_intel drm r8169 serio_raw i2c_hid wmi video pinctrl_cannonlake fuse
CPU: 7 PID: 356 Comm: kworker/7:2 Tainted: G        W         5.11.12-300.fc34.x86_64 #1
Hardware name: Dell Inc. G3 3590/02RJ9R, BIOS 1.12.0 11/24/2020
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 6c 32 cb 4c 89 ea 48 c7 c7 30 b1 5f c0 48 89 c6 e8 f1 68 6c cb <0f> 0b eb b8 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 0f 1f 44 00
RSP: 0018:ffffa8af0047fa68 EFLAGS: 00010096
RAX: 000000000000001d RBX: ffff993788abd800 RCX: 0000000000000027
RDX: ffff9938f65d8ac8 RSI: 0000000000000001 RDI: ffff9938f65d8ac0
RBP: ffff99378748f3c8 R08: 0000000000000000 R09: ffffa8af0047f898
R10: ffffa8af0047f890 R11: ffffffff8cb44f08 R12: 0000000000000292
R13: ffff99378169bd00 R14: ffffa8af0047fb98 R15: ffff9937b7288ba4
FS:  0000000000000000(0000) GS:ffff9938f65c0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005649118b24d0 CR3: 000000020da10004 CR4: 00000000003706e0
Call Trace:
 nv50_instobj_release+0x2f/0xc0 [nouveau]
 nvkm_vmm_unref_ptes+0x183/0x270 [nouveau]
 nvkm_vmm_iter.constprop.0+0x226/0x7e0 [nouveau]
 ? release_pages+0xd0/0x510
 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]
 ? sched_clock+0x5/0x10
 ? sched_clock_cpu+0xc/0xa0
 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