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] SMP PTI
CPU: 3 PID: 28924 Comm: ThreadPoolSingl Not tainted 5.15.6-200.fc35.x86_64 #1
Hardware name: Dell Inc. Precision M2800/07C6X3, BIOS A17 06/13/2019
RIP: 0010:radeon_vm_fini+0x14a/0x230 [radeon]
Code: e8 bb ed ee c9 4c 8b 7d 70 31 f6 49 8b bf 70 01 00 00 e8 a9 c2 4f ca 83 f8 fc 0f 85 34 ff ff ff 49 8b 44 24 48 4d 8d 74 24 48 <48> 8b 10 48 8d 68 a8 48 8d 5a a8 49 39 c6 74 2e 48 8d 7d 70 e8 bd
RSP: 0018:ffffb3048274fc48 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff9ce2842d4a00 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff9ce2842d5400 RDI: ffff9ce2842d5420
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffb3048274fb90
R10: ffff9ce3e41223c0 R11: 000000000000005f R12: ffff9ce2842d5400
R13: ffff9ce280d68000 R14: ffff9ce2842d5448 R15: dead000000000100
FS:  0000000000000000(0000) GS:ffff9ce59eb80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000210e10001 CR4: 00000000001706e0
Call Trace:
 <TASK>
 radeon_driver_postclose_kms+0x16b/0x180 [radeon]
 drm_file_free.part.0+0x206/0x250 [drm]
 drm_release+0x65/0x110 [drm]
 __fput+0x94/0x250
 task_work_run+0x65/0xa0
 do_exit+0x338/0xa90
 do_group_exit+0x33/0xa0
 get_signal+0x16b/0x910
 ? __sys_sendto+0x12a/0x160
 arch_do_signal_or_restart+0xfd/0x730
 ? enqueue_hrtimer+0x2f/0x70
 ? __x64_sys_futex+0x63/0x1a0
 ? __x64_sys_futex+0x63/0x1a0
 exit_to_user_mode_prepare+0x11a/0x240
 syscall_exit_to_user_mode+0x18/0x40
 do_syscall_64+0x48/0x90
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f0f193e872a
Code: Unable to access opcode bytes at RIP 0x7f0f193e8700.
RSP: 002b:00007f0efa9c2380 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffdfc RBX: 0000000000000000 RCX: 00007f0f193e872a
RDX: 0000000000000000 RSI: 0000000000000089 RDI: 00007f0efa9c2608
RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000ffffffff
R10: 00007f0efa9c24a0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0efa9c25e0 R14: 0000000000000000 R15: 00007f0efa9c25b8
 </TASK>
Modules linked in: uas usb_storage rfcomm snd_seq_dummy snd_hrtimer uinput ntfs3 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 nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 bnep btusb btrtl btbcm btintel bluetooth ip_set uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common videodev ecdh_generic mc nf_tables nfnetlink qrtr ns sunrpc intel_rapl_msr intel_rapl_common at24 x86_pkg_temp_thermal mei_hdcp mei_wdt intel_powerclamp coretemp ppdev iTCO_wdt intel_pmc_bxt iTCO_vendor_support kvm_intel dell_laptop dell_smm_hwmon kvm vfat fat irqbypass pktcdvd rapl iwlmvm intel_cstate intel_uncore mac80211 snd_hda_codec_realtek libarc4 snd_hda_codec_generic snd_hda_codec_hdmi snd_soc_rt5640 snd_hda_intel snd_soc_rl6231 snd_intel_dspcfg snd_soc_core joydev iwlwifi snd_intel_sdw_acpi dell_wmi pcspkr ledtrig_audio snd_hda_codec
 dell_smbios dcdbas snd_compress dell_wmi_descriptor snd_hda_core sparse_keymap wmi_bmof ac97_bus snd_pcm_dmaengine cfg80211 snd_hwdep i2c_i801 i2c_smbus snd_seq snd_seq_device mei_me lpc_ich snd_pcm mei snd_timer parport_pc snd parport dell_smo8800 soundcore dell_rbtn rfkill zram ip_tables amdgpu iommu_v2 gpu_sched mmc_block i915 hid_logitech_hidpp radeon crct10dif_pclmul crc32_pclmul crc32c_intel drm_ttm_helper i2c_algo_bit ttm drm_kms_helper ghash_clmulni_intel cec sdhci_pci cqhci serio_raw sdhci mmc_core e1000e drm hid_logitech_dj wmi video fuse ipmi_devintf ipmi_msghandler
CR2: 0000000000000000