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: 2 PID: 25110 Comm: chromium-:rcs0 Tainted: G        W         5.16.12-200.fc35.x86_64 #1
Hardware name: LENOVO 20FVS01400/20FVS01400, BIOS R08ET64W (1.38 ) 05/02/2019
RIP: 0010:radeon_vm_fini+0x148/0x230 [radeon]
Code: e8 dd d0 1f c1 4c 8b 7d 70 31 f6 49 8b bf 70 01 00 00 e8 9b 26 84 c1 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:ffffb1514823fc48 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8d2fea6b7400 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8d2fea6b7800 RDI: ffff8d2fea6b7820
RBP: 0000000000000000 R08: 0000000000000000 R09: ffff8d2d8bdc8f18
R10: ffff8d2e0d641f60 R11: 000000000000005f R12: ffff8d2fea6b7800
R13: ffff8d2d8bdc8000 R14: ffff8d2fea6b7848 R15: dead000000000100
FS:  0000000000000000(0000) GS:ffff8d30b2500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000001bfe10005 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: 0033:0x7f90560b973a
Code: Unable to access opcode bytes at RIP 0x7f90560b9710.
RSP: 002b:00007f903dea6530 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 0000000000000000 RCX: 00007f90560b973a
RDX: 0000000000000000 RSI: 0000000000000189 RDI: 00000dc400038ed8
RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00000dc400038ed8 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in: uas usb_storage uhid uinput rfcomm snd_seq_dummy snd_hrtimer 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 ip_set nf_tables nfnetlink qrtr bnep sunrpc vfat fat snd_soc_skl intel_rapl_msr snd_soc_hdac_hda snd_hda_ext_core snd_soc_sst_ipc snd_soc_sst_dsp mei_hdcp iTCO_wdt snd_soc_acpi_intel_match mei_pxp intel_rapl_common intel_pmc_bxt iTCO_vendor_support at24 snd_soc_acpi intel_tcc_cooling snd_soc_core x86_pkg_temp_thermal intel_powerclamp snd_compress coretemp snd_hda_codec_hdmi kvm_intel iwlmvm ac97_bus snd_ctl_led kvm snd_hda_codec_realtek mac80211 snd_hda_codec_generic irqbypass snd_pcm_dmaengine snd_hda_intel libarc4 rapl snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec intel_cstate snd_hda_core intel_uncore btusb uvcvideo snd_hwdep iwlwifi btrtl videobuf2_vmalloc
 videobuf2_memops btbcm videobuf2_v4l2 videobuf2_common snd_seq btintel snd_seq_device pcspkr think_lmi bluetooth snd_pcm cfg80211 videodev firmware_attributes_class thinkpad_acpi i2c_i801 mc snd_timer wmi_bmof joydev i2c_smbus ledtrig_audio mei_me ecdh_generic mei platform_profile rfkill intel_xhci_usb_role_switch intel_pch_thermal snd soundcore zram ip_tables dm_crypt amdgpu iommu_v2 gpu_sched i915 hid_logitech_hidpp radeon rtsx_pci_sdmmc mmc_core drm_ttm_helper crct10dif_pclmul crc32_pclmul crc32c_intel i2c_algo_bit ttm drm_kms_helper ghash_clmulni_intel cec e1000e drm serio_raw rtsx_pci hid_logitech_dj wmi video ipmi_devintf ipmi_msghandler fuse
CR2: 0000000000000000