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: 11333 Comm: firefox:disk$3 Tainted: G           OE     5.10.11-100.fc32.x86_64 #1
Hardware name: LENOVO 80RS/Paris 5A8, BIOS D5CN43WW 12/16/2015
RIP: 0010:radeon_vm_fini+0x135/0x210 [radeon]
Code: e8 00 87 1d e6 4c 8b 7d 70 31 f6 49 8b bf 70 01 00 00 e8 de ee 79 e6 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 72
RSP: 0018:ffffa31583dbbc40 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff911bcbd0f600 RCX: 0000000000000000
RDX: ffff911b7e402780 RSI: ffff911bcbd0e600 RDI: ffff911bcbd0e620
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffa31583dbbb88
R10: 0000000000000000 R11: 000000000000005f R12: ffff911bcbd0e600
R13: ffff911acbff8000 R14: ffff911bcbd0e648 R15: dead000000000100
FS:  0000000000000000(0000) GS:ffff911c3a480000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000010a10002 CR4: 00000000003706e0
Call Trace:
 radeon_driver_postclose_kms+0x156/0x170 [radeon]
 drm_file_free.part.0+0x21e/0x2a0 [drm]
 drm_release+0x65/0x110 [drm]
 __fput+0x9d/0x240
 task_work_run+0x65/0xa0
 do_exit+0x328/0xa80
 do_group_exit+0x33/0xa0
 get_signal+0x16a/0x880
 arch_do_signal+0x30/0x710
 exit_to_user_mode_prepare+0xd5/0x140
 syscall_exit_to_user_mode+0x2d/0x190
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fd5851fee92
Code: Unable to access opcode bytes at RIP 0x7fd5851fee68.
RSP: 002b:00007fd552cbbce0 EFLAGS: 00000282 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 0000000000000006 RCX: 00007fd5851fee92
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fd559b25e68
RBP: 00007fd559b25e40 R08: 0000000000000000 R09: 0000000000000003
R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000000
R13: 00007fd559b25e18 R14: 00007fd559b25e68 R15: 00007fd552cbbd10
Modules linked in: snd_seq_dummy snd_hrtimer uinput rfcomm xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nf_conntrack_tftp tun 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 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 vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) cmac bnep sunrpc vfat fat snd_soc_skl snd_soc_sst_ipc snd_soc_sst_dsp snd_hda_ext_core snd_soc_acpi_intel_match snd_hda_codec_hdmi snd_soc_acpi snd_hda_codec_conexant snd_hda_codec_generic ledtrig_audio snd_hda_intel snd_intel_dspcfg soundwire_intel soundwire_generic_allocation snd_soc_core snd_compress
 snd_pcm_dmaengine soundwire_cadence snd_hda_codec ath10k_pci ath10k_core snd_hda_core mac80211 ac97_bus uvcvideo snd_hwdep snd_seq snd_seq_device snd_pcm videobuf2_vmalloc btusb videobuf2_memops videobuf2_v4l2 btrtl videobuf2_common ath btbcm videodev btintel cfg80211 snd_timer bluetooth mc snd ecdh_generic rtsx_usb_ms libarc4 memstick ecc soundcore intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel iTCO_wdt intel_pmc_bxt iTCO_vendor_support kvm at24 irqbypass rapl intel_cstate intel_uncore i2c_i801 mei_hdcp i2c_smbus mei_me ideapad_laptop mei intel_xhci_usb_role_switch intel_pch_thermal roles joydev sparse_keymap pcspkr rfkill acpi_pad intel_wmi_thunderbolt ip_tables amdgpu iommu_v2 gpu_sched i915 radeon rtsx_usb_sdmmc mmc_core ttm i2c_algo_bit crct10dif_pclmul crc32_pclmul crc32c_intel drm_kms_helper cec ghash_clmulni_intel drm r8169 serio_raw rtsx_usb wmi video fuse
CR2: 0000000000000000