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: 1 PID: 10755 Comm: Chrome_ChildIOT 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 ca fc d5 4c 8b 7d 70 31 f6 49 8b bf 70 01 00 00 e8 9b 26 61 d6 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:ffffc098459a7c48 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff998b07d4d400 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff998b07d4d600 RDI: ffff998b07d4d620
RBP: 0000000000000000 R08: 0000000000000000 R09: ffff998b0a088f18
R10: 00000000000108a2 R11: 0000000000000000 R12: ffff998b07d4d600
R13: ffff998b0a088000 R14: ffff998b07d4d648 R15: dead000000000100
FS:  0000000000000000(0000) GS:ffff998d52c80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000001a9e10001 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
 do_group_exit+0x33/0xa0
 get_signal+0xaf/0x9c0
 ? preempt_count_add+0x68/0xa0
 ? _raw_write_lock_irq+0x1a/0x40
 arch_do_signal_or_restart+0x109/0x740
 ? do_wait_intr_irq+0xa0/0xa0
 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: 0033:0x7ffbd1dc0c2e
Code: Unable to access opcode bytes at RIP 0x7ffbd1dc0c04.
RSP: 002b:00007ffbb355c3f0 EFLAGS: 00000293 ORIG_RAX: 00000000000000e8
RAX: fffffffffffffffc RBX: 00002e24003a7f00 RCX: 00007ffbd1dc0c2e
RDX: 0000000000000020 RSI: 00002e2400392a00 RDI: 0000000000000021
RBP: 00007ffbb355c450 R08: 0000000000000000 R09: 00005586739d8700
R10: 00000000ffffffff R11: 0000000000000293 R12: 00002e24003a7f00
R13: 00002e24008e7e60 R14: 00002e2400392a00 R15: 00002e24003f3600
 </TASK>
Modules linked in: 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 mei_hdcp mei_pxp intel_pmc_bxt intel_rapl_common iTCO_vendor_support snd_hda_codec_conexant snd_hda_codec_generic x86_pkg_temp_thermal intel_powerclamp ledtrig_audio snd_hda_codec_hdmi coretemp iwlmvm snd_hda_intel snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec mac80211 kvm_intel kvm
 snd_hda_core snd_hwdep btusb libarc4 btrtl snd_seq irqbypass uvcvideo rapl snd_seq_device videobuf2_vmalloc btbcm intel_cstate snd_pcm videobuf2_memops btintel videobuf2_v4l2 intel_uncore rtsx_usb_ms iwlwifi videobuf2_common memstick joydev videodev bluetooth cfg80211 pcspkr snd_timer i2c_i801 mc lpc_ich snd i2c_smbus mei_me mei ecdh_generic soundcore ideapad_laptop sparse_keymap platform_profile rfkill wmi acpi_pad zram ip_tables amdgpu iommu_v2 gpu_sched i915 radeon i2c_algo_bit drm_ttm_helper ttm drm_kms_helper rtsx_usb_sdmmc mmc_core cec crct10dif_pclmul crc32_pclmul drm crc32c_intel ghash_clmulni_intel r8169 serio_raw rtsx_usb video fuse ipmi_devintf ipmi_msghandler
CR2: 0000000000000000