Backtrace

BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0 
Oops: 0000 [#1] PREEMPT SMP PTI
CPU: 3 PID: 1139 Comm: Xorg Not tainted 6.1.7-100.fc36.x86_64 #1
Hardware name: Dell Inc. Inspiron 7548/0AM6R0, BIOS A02 02/17/2015
RIP: 0010:radeon_vm_fini+0x149/0x230 [radeon]
Code: bf 70 01 00 00 e8 b7 c5 97 e6 83 f8 fc 74 13 85 c0 0f 84 45 ff ff ff 3d 00 fe ff ff 0f 85 e7 00 00 00 48 8b 45 48 4c 8d 75 48 <48> 8b 10 48 8d 58 a8 4c 8d 6a a8 49 39 c6 74 2e 48 8d 7b 70 e8 de
RSP: 0018:ffffa1e103ab7c88 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff91453cd66600 RDI: ffff91453cd66620
RBP: ffff91453cd66600 R08: ffff91450d8d4f28 R09: 0000000080150014
R10: 0000000000000000 R11: 0000000000000000 R12: ffff91450d8d4000
R13: ffff91453cd66620 R14: ffff91453cd66648 R15: dead000000000100
FS:  0000000000000000(0000) GS:ffff91481ed80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000001d8fa0002 CR4: 00000000003706e0
Call Trace:
 <TASK>
 radeon_driver_postclose_kms+0x160/0x180 [radeon]
 drm_file_free+0x1c9/0x280
 drm_release+0x50/0xe0
 __fput+0x91/0x250
 task_work_run+0x59/0x90
 do_exit+0x338/0xb00
 do_group_exit+0x2d/0x80
 __x64_sys_exit_group+0x14/0x20
 do_syscall_64+0x5b/0x80
 ? handle_mm_fault+0xdb/0x2d0
 ? do_user_addr_fault+0x1ef/0x690
 ? exc_page_fault+0x70/0x170
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa0a40dd4d1
Code: Unable to access opcode bytes at 0x7fa0a40dd4a7.
RSP: 002b:00007ffe6a51dea8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fa0a41f49e0 RCX: 00007fa0a40dd4d1
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 0000000000000000 R08: fffffffffffffc70 R09: 00007fa0a41ffb20
R10: 00007fa0a4005fd0 R11: 0000000000000246 R12: 00007fa0a41f49e0
R13: 0000000000000000 R14: 00007fa0a41f9ee8 R15: 00007fa0a41f9f00
 </TASK>
Modules linked in: rfcomm snd_seq_dummy snd_hrtimer overlay 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 iptable_filter qrtr bnep sunrpc binfmt_misc vfat fat squashfs loop intel_rapl_msr intel_rapl_common mei_hdcp iTCO_wdt mei_pxp at24 intel_pmc_bxt x86_pkg_temp_thermal intel_powerclamp iTCO_vendor_support coretemp kvm_intel dell_laptop dell_smm_hwmon iwlmvm kvm snd_ctl_led mac80211 snd_hda_codec_realtek snd_hda_codec_generic irqbypass snd_hda_codec_hdmi rapl dell_wmi intel_cstate uvcvideo snd_hda_intel intel_uncore dell_smbios videobuf2_vmalloc dcdbas snd_intel_dspcfg libarc4 snd_intel_sdw_acpi ledtrig_audio sparse_keymap
 dell_wmi_descriptor wmi_bmof videobuf2_memops videobuf2_v4l2 btusb pcspkr iwlwifi videobuf2_common snd_hda_codec btrtl i2c_i801 snd_hda_core btbcm i2c_smbus snd_hwdep videodev snd_seq btintel snd_seq_device btmtk joydev mc cfg80211 bluetooth snd_pcm mei_me snd_timer snd apple_mfi_fastcharge mei lpc_ich soundcore int3403_thermal dell_rbtn int3402_thermal int340x_thermal_zone dw_dmac rfkill int3400_thermal dell_smo8800 acpi_thermal_rel acpi_pad zram amdgpu iommu_v2 gpu_sched hid_apple i915 radeon crct10dif_pclmul crc32_pclmul crc32c_intel polyval_clmulni hid_multitouch polyval_generic drm_buddy drm_ttm_helper ttm video ghash_clmulni_intel drm_display_helper sha512_ssse3 serio_raw cec wmi i2c_hid_acpi pinctrl_lynxpoint i2c_hid ip6_tables ip_tables fuse
CR2: 0000000000000000