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: 3053 Comm: ThreadPoolServi Tainted: G          I       5.8.15-301.fc33.x86_64 #1
Hardware name: Dell Inc. Inspiron 5759/00X5G5, BIOS 1.1.9 03/01/2016
RIP: 0010:radeon_vm_fini+0x11f/0x200 [radeon]
Code: d8 e8 e5 d6 2a f8 4c 8b 7d 70 41 8b 87 d8 01 00 00 85 c0 0f 85 3c ff ff ff 0f 0b e9 35 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 68
RSP: 0018:ffffaaae42acbc18 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88976b24ca00 RCX: 0000000000000000
RDX: ffff8897bc6e2740 RSI: ffff88976b24c400 RDI: ffff88976b24c420
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffaaae42acbb60
R10: 00000000005c4806 R11: 00000000005e95f6 R12: ffff88976b24c400
R13: ffff8897ecbd8000 R14: ffff88976b24c448 R15: dead000000000100
FS:  00007f24c20e3640(0000) GS:ffff8897fae80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000106a0a006 CR4: 00000000003606e0
Call Trace:
 radeon_driver_postclose_kms+0x161/0x180 [radeon]
 drm_file_free.part.0+0x212/0x290 [drm]
 drm_release+0x65/0x110 [drm]
 __fput+0xe2/0x250
 task_work_run+0x65/0xa0
 do_exit+0x34c/0xaf0
 ? __switch_to_asm+0x36/0x70
 do_group_exit+0x33/0xa0
 get_signal+0x179/0x8d0
 ? schedule+0x4a/0xb0
 ? schedule_hrtimeout_range_clock+0xf8/0x100
 ? pipe_poll+0xae/0x150
 do_signal+0x30/0x700
 ? do_epoll_wait+0xaa/0x610
 __prepare_exit_to_usermode+0x11f/0x1a0
 do_syscall_64+0x59/0x90
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f24de26580e
Code: Bad RIP value.
RSP: 002b:00007f24c20e2430 EFLAGS: 00000293 ORIG_RAX: 00000000000000e8
RAX: fffffffffffffffc RBX: 0000000000000000 RCX: 00007f24de26580e
RDX: 0000000000000020 RSI: 000030a2000e2d00 RDI: 0000000000000021
RBP: 00007f24c20e2490 R08: 0000000000000000 R09: 0f0f0f0f0f0f0f0f
R10: 00000000ffffffff R11: 0000000000000293 R12: 000030a20013d400
R13: 000030a2007f8640 R14: 000030a2000e2d00 R15: 000030a200716f00
Modules linked in: 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 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 sunrpc snd_soc_skl snd_soc_sst_ipc snd_soc_sst_dsp snd_hda_ext_core snd_soc_acpi_intel_match snd_soc_acpi snd_soc_core snd_hda_codec_hdmi snd_compress intel_rapl_msr ac97_bus snd_hda_codec_realtek snd_hda_codec_generic snd_pcm_dmaengine snd_hda_intel at24 iTCO_wdt snd_intel_dspcfg intel_pmc_bxt intel_rapl_common iTCO_vendor_support snd_hda_codec mei_hdcp x86_pkg_temp_thermal intel_powerclamp iwlmvm coretemp snd_hda_core
 kvm_intel snd_hwdep mac80211 snd_seq kvm snd_seq_device libarc4 uvcvideo snd_pcm dell_laptop iwlwifi ledtrig_audio irqbypass dell_smm_hwmon videobuf2_vmalloc videobuf2_memops rapl intel_cstate btusb dell_wmi dell_smbios intel_uncore videobuf2_v4l2 rtsx_usb_ms dcdbas btrtl wmi_bmof sparse_keymap snd_timer btbcm pcspkr btintel cfg80211 snd memstick dell_wmi_descriptor bluetooth videobuf2_common i2c_i801 videodev soundcore i2c_smbus mei_me mei mc joydev ecdh_generic ecc idma64 intel_xhci_usb_role_switch roles intel_pch_thermal dell_rbtn rfkill acpi_pad zram ip_tables amdgpu iommu_v2 gpu_sched i915 radeon rtsx_usb_sdmmc mmc_core hid_multitouch i2c_algo_bit drm_kms_helper ttm cec crct10dif_pclmul crc32_pclmul crc32c_intel drm ghash_clmulni_intel serio_raw r8169 rtsx_usb wmi i2c_hid video pinctrl_sunrisepoint pinctrl_intel fuse
CR2: 0000000000000000