Backtrace

WARNING: CPU: 9 PID: 28449 at drivers/video/fbdev/core/fbmem.c:1682 do_unregister_framebuffer+0x13/0x110
Modules linked in: binfmt_misc rfcomm snd_seq_dummy snd_hrtimer joydev tun xt_nat veth nf_conntrack_netlink xt_addrtype br_netfilter 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 overlay ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter cmac bnep sunrpc vfat fat xfs snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio snd_hda_codec_hdmi snd_hda_intel snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec amdgpu iwlmvm snd_hda_core snd_hwdep btusb intel_rapl_msr mac80211 intel_rapl_common snd_seq btrtl btbcm libarc4
 edac_mce_amd snd_seq_device btintel iwlwifi kvm_amd snd_pcm bluetooth kvm cfg80211 iommu_v2 snd_timer gpu_sched drm_ttm_helper wmi_bmof snd k10temp ecdh_generic rapl ttm drm_kms_helper i2c_piix4 soundcore rfkill ecc cec gpio_amdpt gpio_generic acpi_cpufreq drm zram ip_tables crct10dif_pclmul crc32_pclmul crc32c_intel igb ghash_clmulni_intel sp5100_tco dca ccp i2c_algo_bit wmi vfio_pci irqbypass vfio_virqfd vfio_iommu_type1 vfio pkcs8_key_parser fuse
CPU: 9 PID: 28449 Comm: start.sh Tainted: G S                5.12.8-300.fc34.x86_64 #1
Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./B450 Gaming-ITX/ac, BIOS P3.70 11/18/2019
RIP: 0010:do_unregister_framebuffer+0x13/0x110
Code: 85 c0 74 05 e9 ee 45 72 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 0f 1f 44 00 00 41 54 55 8b 77 04 48 89 fd 83 fe 1f 76 63 <0f> 0b 48 8b bd f0 01 00 00 48 85 ff 74 0d f6 85 0c 02 00 00 01 0f
RSP: 0018:ffffa3e18a767d60 EFLAGS: 00010287
RAX: 0000000000000000 RBX: ffff9526c8874000 RCX: 0000000000000000
RDX: ffff95292f852780 RSI: 0000000000000000 RDI: ffff9526c10c3c00
RBP: ffff9526c10c3c00 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff83c898c0
R13: ffffffff83c58be8 R14: ffff952930683a80 R15: ffff952930683aa0
FS:  00007f9b6cbd2740(0000) GS:ffff9529cec40000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056254c0318a8 CR3: 00000003b34aa000 CR4: 00000000003506e0
Call Trace:
 unregister_framebuffer+0x1d/0x30
 efifb_remove+0x19/0x40
 platform_remove+0x1f/0x40
 __device_release_driver+0x17a/0x230
 device_driver_detach+0x3c/0xa0
 unbind_store+0x113/0x130
 kernfs_fop_write_iter+0x11c/0x1b0
 new_sync_write+0x108/0x180
 vfs_write+0x1b8/0x270
 ksys_write+0x4f/0xc0
 do_syscall_64+0x33/0x40
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f9b6ccc6387
Code: 0d 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
RSP: 002b:00007ffd012468f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000012 RCX: 00007f9b6ccc6387
RDX: 0000000000000012 RSI: 000056254c0308a0 RDI: 0000000000000001
RBP: 000056254c0308a0 R08: 000000000000000a R09: 00007f9b6cd5c4e0
R10: 00007f9b6cd5c3e0 R11: 0000000000000246 R12: 0000000000000012
R13: 00007f9b6cd99520 R14: 0000000000000012 R15: 00007f9b6cd99700