Backtrace

BUG: kernel NULL pointer dereference, address: 00000000000000a8
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0 
Oops: Oops: 0000 [#4] SMP PTI
CPU: 1 UID: 1000 PID: 11144 Comm: nautilus Tainted: G      D W           6.19.14-108.fc42.x86_64 #1 PREEMPT(lazy) 
Tainted: [D]=DIE, [W]=WARN
Hardware name: Dell Inc. Latitude E5440/08RCYC, BIOS A24 06/13/2019
RIP: 0010:nvkm_uchan_sclass+0x5d/0x140 [nouveau]
Code: d5 45 31 e4 48 8b 53 08 48 8b 43 18 48 8b 12 8b 72 10 85 f6 74 06 83 78 18 1e 74 67 48 89 45 58 c7 45 10 00 00 00 00 48 8b 08 <48> 8b 41 68 48 85 c0 0f 84 94 00 00 00 44 89 ee 48 89 ef e8 5b dd
RSP: 0018:ffffd29b8db73c38 EFLAGS: 00010246
RAX: ffff8a92c02e54b8 RBX: ffff8a92c22211c0 RCX: 0000000000000040
RDX: ffffffffc0c632a0 RSI: 0000000000000000 RDI: 0000000000000007
RBP: ffffd29b8db73c68 R08: 0000000000000007 R09: ffffd29b8db73c70
R10: ffff8a92cfc33aa0 R11: ffff8a92c2d22700 R12: 0000000000000000
R13: 0000000000000000 R14: ffff8a92c9684c00 R15: ffffd29b8db73d80
FS:  00007fb238334d80(0000) GS:ffff8a945ec6d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000000000a8 CR3: 000000013c6bc001 CR4: 00000000001726f0
Call Trace:
 <TASK>
 nvkm_ioctl_sclass+0xbb/0x100 [nouveau]
 ? __pfx_nvkm_uchan_object_new+0x10/0x10 [nouveau]
 ? __pfx_gf100_gr_object_new+0x10/0x10 [nouveau]
 nvkm_ioctl+0xd2/0x1e0 [nouveau]
 nvif_object_sclass_get+0x7a/0x170 [nouveau]
 nouveau_abi16_ioctl+0x25e/0x510 [nouveau]
 nouveau_drm_ioctl+0xb2/0xc0 [nouveau]
 __x64_sys_ioctl+0x97/0xe0
 do_syscall_64+0x7e/0x690
 ? do_syscall_64+0xbb/0x690
 ? nouveau_drm_ioctl+0x89/0xc0 [nouveau]
 ? __x64_sys_ioctl+0xb1/0xe0
 ? do_syscall_64+0xbb/0x690
 ? irqentry_exit+0x6d/0x540
 ? exc_page_fault+0x7e/0x1a0
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fb23a78f12d
Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
RSP: 002b:00007ffeaa7f43b0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ffeaa7f4620 RCX: 00007fb23a78f12d
RDX: 00007ffeaa7f4510 RSI: 00000000c0a06447 RDI: 0000000000000019
RBP: 00007ffeaa7f4400 R08: 0000000000000010 R09: 0000000000000000
R10: 00007fb1e672d880 R11: 0000000000000246 R12: 00007ffeaa7f4510
R13: 00000000c0a06447 R14: 0000000000000019 R15: 00007ffeaa7f44b0
 </TASK>
Modules linked in: overlay uinput rfcomm snd_seq_dummy snd_hrtimer 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 nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal bnep uvcvideo intel_powerclamp qrtr coretemp btusb snd_hda_codec_alc269 snd_hda_scodec_component btmtk uvc btrtl kvm_intel snd_hda_codec_realtek_lib snd_hda_codec_intelhdmi sunrpc iwlmvm videobuf2_vmalloc snd_hda_codec_generic snd_hda_codec_hdmi btbcm platform_profile videobuf2_memops kvm snd_hda_intel videobuf2_v4l2 mac80211 videobuf2_common snd_hda_codec btintel dell_laptop videodev iTCO_wdt snd_hda_core dell_wmi intel_pmc_bxt irqbypass snd_intel_dspcfg rapl snd_intel_sdw_acpi mei_wdt mei_hdcp mei_pxp iTCO_vendor_support ppdev dell_smm_hwmon libarc4 mc iwlwifi bluetooth intel_cstate snd_hwdep dell_smbios intel_uncore snd_seq i2c_i801 dcdbas cfg80211
 sparse_keymap snd_seq_device dell_wmi_descriptor i2c_smbus wmi_bmof pcspkr snd_pcm e1000e mei_me snd_timer lpc_ich mei snd soundcore parport_pc parport dell_lis3lv02d dell_rbtn dell_smo8800 rfkill joydev loop nfnetlink zram lz4hc_compress lz4_compress dm_crypt i915 nouveau drm_ttm_helper gpu_sched sdhci_pci drm_gpuvm drm_exec mxm_wmi drm_buddy i2c_algo_bit sdhci_uhs2 sdhci ttm cqhci ghash_clmulni_intel drm_display_helper mmc_core cec video intel_oc_wdt wmi serio_raw i2c_dev fuse
CR2: 00000000000000a8