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: 5762 Comm: Chrome_ChildIOT Not tainted 6.1.6-100.fc36.x86_64 #1
Hardware name: LENOVO 80UD/Lenovo ideapad 1, BIOS 1TCN21WW(V2.02) 10/24/2016
RIP: 0010:radeon_vm_fini+0x149/0x230 [radeon]
Code: bf 70 01 00 00 e8 b7 e5 94 fb 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:ffffb423c1867c08 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffa0e83b0c6400 RDI: ffffa0e83b0c6420
RBP: ffffa0e83b0c6400 R08: ffffa0e70c0a4f28 R09: ffffb423c1867b58
R10: 0000000000000003 R11: 0000000000000001 R12: ffffa0e70c0a4000
R13: ffffa0e83b0c6420 R14: ffffa0e83b0c6448 R15: dead000000000100
FS:  0000000000000000(0000) GS:ffffa0e877500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000014b010005 CR4: 00000000003706e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 radeon_driver_postclose_kms+0x160/0x180 [radeon]
 drm_file_free+0x1c6/0x280
 drm_release+0x50/0xe0
 __fput+0x8e/0x250
 task_work_run+0x56/0x90
 do_exit+0x338/0xb00
 do_group_exit+0x2d/0x80
 get_signal+0x90f/0x950
 arch_do_signal_or_restart+0x44/0x770
 exit_to_user_mode_prepare+0x117/0x1f0
 syscall_exit_to_user_mode+0x17/0x40
 do_syscall_64+0x67/0x80
 ? __irq_exit_rcu+0x3d/0x140
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb9d151194e
Code: Unable to access opcode bytes at 0x7fb9d1511924.
RSP: 002b:00007fb9b2bfd2e0 EFLAGS: 00000293 ORIG_RAX: 00000000000000e8
RAX: fffffffffffffffc RBX: 7fffffffffffffff RCX: 00007fb9d151194e
RDX: 0000000000000001 RSI: 00007fb9b2bfd360 RDI: 0000000000000027
RBP: 00007fb9b2bfd570 R08: 0000000000000000 R09: aaaaaaaaaaaaaaaa
R10: 00000000ffffffff R11: 0000000000000293 R12: aaaaaaaaaaaaaaaa
R13: 7fffffffffffffff R14: 7fffffffffffffff R15: 0000337400280e48
 </TASK>
Modules linked in: tls 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 ip_tables qrtr bnep sunrpc vfat fat snd_sof_pci_intel_skl snd_sof_intel_hda_common soundwire_intel soundwire_generic_allocation soundwire_cadence snd_sof_intel_hda snd_sof_pci snd_sof_xtensa_dsp snd_sof btusb snd_sof_utils soundwire_bus snd_soc_avs snd_soc_hda_codec snd_soc_skl btrtl ath10k_pci snd_soc_hdac_hda snd_hda_codec_hdmi btbcm snd_hda_ext_core
 snd_soc_sst_ipc snd_soc_sst_dsp snd_soc_acpi_intel_match snd_hda_codec_conexant snd_hda_codec_generic ledtrig_audio snd_soc_acpi ath10k_core snd_soc_core btintel snd_compress ac97_bus mac80211 snd_pcm_dmaengine btmtk snd_hda_intel intel_rapl_msr uvcvideo snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec libarc4 rtsx_usb_ms ath videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 memstick videobuf2_common snd_hda_core intel_rapl_common videodev cfg80211 mc bluetooth snd_hwdep intel_tcc_cooling iTCO_wdt x86_pkg_temp_thermal intel_powerclamp coretemp ee1004 snd_seq intel_pmc_bxt iTCO_vendor_support rapl intel_cstate snd_seq_device mei_hdcp mei_pxp intel_uncore ideapad_laptop sparse_keymap snd_pcm joydev platform_profile intel_xhci_usb_role_switch snd_timer snd rfkill soundcore i2c_i801 intel_wmi_thunderbolt mei_me pcspkr mei intel_pch_thermal i2c_smbus acpi_pad zram amdgpu iommu_v2 gpu_sched i915 radeon rtsx_usb_sdmmc mmc_core crct10dif_pclmul crc32_pclmul crc32c_intel
 polyval_clmulni polyval_generic drm_ttm_helper drm_buddy ghash_clmulni_intel ttm sha512_ssse3 r8169 serio_raw drm_display_helper rtsx_usb cec video wmi fuse
CR2: 0000000000000000