Backtrace

WARNING: CPU: 2 PID: 3221 at drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link.c:2553 dc_link_set_backlight_level+0x8a/0xf0 [amdgpu]
Modules linked in: uinput rfcomm xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nf_conntrack_tftp wireguard libchacha20poly1305 chacha_x86_64 poly1305_x86_64 libblake2s blake2s_x86_64 ip6_udp_tunnel udp_tunnel curve25519_x86_64 libcurve25519_generic libchacha libblake2s_generic nft_masq 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 cmac bnep sunrpc vfat fat squashfs loop snd_hda_codec_realtek iwlmvm snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel mac80211 snd_intel_dspcfg soundwire_intel soundwire_generic_allocation
 snd_soc_core snd_compress uvcvideo snd_pcm_dmaengine soundwire_cadence edac_mce_amd snd_hda_codec kvm_amd libarc4 btusb btrtl btbcm kvm btintel videobuf2_vmalloc videobuf2_memops snd_hda_core videobuf2_v4l2 videobuf2_common bluetooth iwlwifi ac97_bus irqbypass videodev rapl snd_hwdep snd_seq joydev wmi_bmof mc snd_seq_device snd_rn_pci_acp3x k10temp ecdh_generic sp5100_tco cfg80211 snd_pcm ecc i2c_piix4 snd_pci_acp3x ipmi_devintf snd_timer thinkpad_acpi ucsi_acpi ipmi_msghandler ledtrig_audio snd typec_ucsi soundcore typec rfkill i2c_scmi acpi_cpufreq zram ip_tables amdgpu rtsx_pci_sdmmc mmc_core crct10dif_pclmul iommu_v2 crc32_pclmul crc32c_intel gpu_sched ttm i2c_algo_bit drm_kms_helper ghash_clmulni_intel cec drm serio_raw nvme ccp rtsx_pci nvme_core r8169 wmi pinctrl_amd video fuse
CPU: 2 PID: 3221 Comm: (sd-bright) Not tainted 5.10.11-200.fc33.x86_64 #1
Hardware name: LENOVO 20NMS0JQ00/20NMS0JQ00, BIOS R13ET49W(1.23 ) 11/24/2020
RIP: 0010:dc_link_set_backlight_level+0x8a/0xf0 [amdgpu]
Code: 70 03 00 00 31 c0 48 8d 96 c0 01 00 00 48 8b 0a 48 85 c9 74 06 48 3b 59 08 74 20 83 c0 01 48 81 c2 d8 04 00 00 83 f8 06 75 e3 <0f> 0b 45 31 e4 5b 44 89 e0 5d 41 5c 41 5d 41 5e c3 48 98 48 69 c0
RSP: 0018:ffffab1d43bc7d88 EFLAGS: 00010246
RAX: 0000000000000006 RBX: ffff919a4bd60800 RCX: 0000000000000000
RDX: ffff919a66721ed0 RSI: ffff919a66720000 RDI: 0000000000000000
RBP: ffff919a50410000 R08: 0000000000000062 R09: 000000000000000a
R10: 000000000000000a R11: f000000000000000 R12: 0000000000006401
R13: 0000000000000000 R14: 000000000000643d R15: ffff919a7b06e560
FS:  00007f55868b0080(0000) GS:ffff919af8a80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5587bad860 CR3: 000000010479e000 CR4: 00000000003506e0
Call Trace:
 amdgpu_dm_backlight_update_status+0xb4/0xc0 [amdgpu]
 backlight_device_set_brightness+0x6e/0x110
 ? copyin+0x2d/0x40
 brightness_store+0x3b/0x50
 kernfs_fop_write_iter+0x124/0x1b0
 new_sync_write+0x108/0x180
 vfs_write+0x1bc/0x270
 ksys_write+0x4f/0xc0
 do_syscall_64+0x33/0x40
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f5587870297
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:00007ffec4769638 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f5587870297
RDX: 0000000000000003 RSI: 00007ffec4769720 RDI: 0000000000000003
RBP: 00007ffec4769720 R08: 0000000000000000 R09: 00007ffec4769760
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 000055651c8e05d0 R14: 0000000000000003 R15: 00007f5587943720