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: 1 PID: 3600 Comm: VizCompositorTh Not tainted 5.11.18-300.fc34.x86_64 #1
Hardware name: LENOVO 80L0/Lenovo G50-80, BIOS B0CNA0WW 09/30/2016
RIP: 0010:radeon_vm_fini+0x135/0x220 [radeon]
Code: e8 00 a7 0c d5 4c 8b 7d 70 31 f6 49 8b bf 70 01 00 00 e8 5e 3c 69 d5 83 f8 fc 0f 85 49 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 42
RSP: 0018:ffffaf0d047e7c58 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8a168518bc00 RCX: 0000000000000000
RDX: ffff8a168a2d8000 RSI: ffff8a168518b600 RDI: ffff8a168518b620
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffaf0d047e7ba0
R10: 0000000000000000 R11: 000000000000005f R12: ffff8a168518b600
R13: ffff8a1647e40000 R14: ffff8a168518b648 R15: dead000000000100
FS:  0000000000000000(0000) GS:ffff8a198f280000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000211a10005 CR4: 00000000001706e0
Call Trace:
 radeon_driver_postclose_kms+0x156/0x170 [radeon]
 drm_file_free.part.0+0x206/0x250 [drm]
 drm_release+0x65/0x110 [drm]
 __fput+0x94/0x240
 task_work_run+0x65/0xa0
 do_exit+0x35f/0xac0
 ? ___sys_recvmsg+0x86/0xe0
 do_group_exit+0x33/0xa0
 get_signal+0x14f/0x8a0
 arch_do_signal_or_restart+0xf2/0x700
 ? __switch_to_asm+0x42/0x70
 ? __switch_to+0x11b/0x460
 ? __sys_recvmsg+0x65/0x80
 exit_to_user_mode_prepare+0xde/0x1b0
 syscall_exit_to_user_mode+0x18/0x40
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7efdcc79a5bf
Code: Unable to access opcode bytes at RIP 0x7efdcc79a595.
RSP: 002b:00007efdb461f530 EFLAGS: 00000293 ORIG_RAX: 0000000000000007
RAX: fffffffffffffdfc RBX: 00007efdcdd3c071 RCX: 00007efdcc79a5bf
RDX: 00000000ffffffff RSI: 0000000000000003 RDI: 00003ec00081b980
RBP: 00003ec00081b980 R08: 0000000000000000 R09: 00007efdb461f3c0
R10: 00007ffe0a72a080 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000003 R14: 00007efdb461f5a0 R15: 00003ec0002d8a30
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 ccm 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 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 nf_tables nfnetlink ip6table_filter ip6_tables iptable_filter cmac bnep iwlmvm mac80211 snd_hda_codec_conexant snd_hda_codec_generic sunrpc snd_hda_codec_hdmi ledtrig_audio snd_hda_intel libarc4 snd_intel_dspcfg soundwire_intel soundwire_generic_allocation snd_soc_core iTCO_wdt intel_rapl_msr mei_hdcp at24 intel_pmc_bxt btusb iwlwifi iTCO_vendor_support uvcvideo btrtl snd_compress btbcm snd_pcm_dmaengine videobuf2_vmalloc btintel soundwire_cadence videobuf2_memops
 videobuf2_v4l2 snd_hda_codec videobuf2_common vfat fat intel_rapl_common bluetooth x86_pkg_temp_thermal intel_powerclamp snd_hda_core coretemp videodev rapl ac97_bus intel_cstate snd_hwdep intel_uncore snd_seq rtsx_usb_ms snd_seq_device memstick snd_pcm cfg80211 pcspkr joydev mc mei_me ecdh_generic mei i2c_i801 ecc snd_timer i2c_smbus lpc_ich snd ideapad_laptop soundcore platform_profile sparse_keymap rfkill wmi acpi_pad zram ip_tables amdgpu iommu_v2 gpu_sched i915 radeon hid_logitech_hidpp i2c_algo_bit drm_ttm_helper ttm drm_kms_helper crct10dif_pclmul crc32_pclmul crc32c_intel cec ghash_clmulni_intel drm serio_raw r8169 hid_logitech_dj video rtsx_usb_sdmmc mmc_core rtsx_usb fuse
CR2: 0000000000000000