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: 5962 Comm: chromium-b:sh1 Tainted: P          IOE     5.16.13-200.fc35.x86_64 #1
Hardware name: LENOVO 80E4/Lenovo G40-80, BIOS B0CN97WW 01/08/2016
RIP: 0010:radeon_vm_fini+0x148/0x230 [radeon]
Code: e8 dd 6a 12 f1 4c 8b 7d 70 31 f6 49 8b bf 70 01 00 00 e8 9b c6 76 f1 83 f8 fc 0f 85 36 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 6f
RSP: 0018:ffffa0d7c62c3c48 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff904869146600 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff904869147c00 RDI: ffff904869147c20
RBP: 0000000000000000 R08: 0000000000000000 R09: ffff9047893d8f18
R10: 000000000000026e R11: 0000000000000000 R12: ffff904869147c00
R13: ffff9047893d8000 R14: ffff904869147c48 R15: dead000000000100
FS:  0000000000000000(0000) GS:ffff9049d2d80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000264e10001 CR4: 00000000003706e0
Call Trace:
 <TASK>
 radeon_driver_postclose_kms+0x169/0x180 [radeon]
 drm_file_free.part.0+0x206/0x250 [drm]
 drm_release+0x65/0x110 [drm]
 __fput+0x94/0x250
 task_work_run+0x5c/0x90
 do_exit+0x364/0xb40
 ? __futex_unqueue+0x25/0x30
 do_group_exit+0x33/0xa0
 get_signal+0xaf/0x9c0
 arch_do_signal_or_restart+0x109/0x740
 ? do_futex+0x14b/0x1f0
 ? __x64_sys_futex+0x63/0x1a0
 exit_to_user_mode_prepare+0x119/0x230
 syscall_exit_to_user_mode+0x18/0x40
 do_syscall_64+0x48/0x90
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fdfea1fd73a
Code: Unable to access opcode bytes at RIP 0x7fdfea1fd710.
RSP: 002b:00007fdfcf3f3530 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 0000000000000000 RCX: 00007fdfea1fd73a
RDX: 0000000000000000 RSI: 0000000000000189 RDI: 000017ca003613dc
RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000017ca003613dc R14: 0000000000000001 R15: 0000000000000000
 </TASK>
Modules linked in: uas usb_storage uinput rfcomm snd_seq_dummy snd_hrtimer xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nf_conntrack_tftp bridge stp llc 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_tables ebtable_nat ebtable_broute 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 nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter qrtr bnep sunrpc vfat fat squashfs loop intel_rapl_msr at24 iTCO_wdt intel_pmc_bxt intel_rapl_common mei_hdcp mei_pxp iTCO_vendor_support x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel iwlmvm kvm mac80211 snd_hda_codec_conexant irqbypass snd_hda_codec_generic snd_hda_codec_hdmi ledtrig_audio snd_hda_intel rapl intel_cstate libarc4
 intel_uncore uvcvideo snd_intel_dspcfg snd_intel_sdw_acpi videobuf2_vmalloc snd_hda_codec iwlwifi btusb videobuf2_memops btrtl snd_hda_core btbcm rtsx_usb_ms pcspkr memstick btintel i2c_i801 i2c_smbus videobuf2_v4l2 snd_hwdep snd_seq joydev bluetooth videobuf2_common snd_seq_device cfg80211 videodev mc snd_pcm lpc_ich ecdh_generic snd_timer mei_me snd mei soundcore ideapad_laptop sparse_keymap platform_profile rfkill wmi acpi_pad zram ip_tables amdgpu iommu_v2 gpu_sched i915 radeon rtsx_usb_sdmmc drm_ttm_helper i2c_algo_bit ttm mmc_core drm_kms_helper crct10dif_pclmul crc32_pclmul crc32c_intel cec ghash_clmulni_intel drm r8169 serio_raw rtsx_usb video fuse ipmi_devintf ipmi_msghandler
CR2: 0000000000000000