Backtrace

WARNING: CPU: 7 PID: 11768 at drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link.c:2546 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 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 vboxnetadp(O) vboxnetflt(O) vboxdrv(O) cmac bnep sunrpc vfat fat btusb btrtl btbcm btintel bluetooth uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common videodev ecdh_generic ecc mc rtw88_8822ce rtw88_8822c snd_acp3x_rn snd_acp3x_pdm_dma snd_soc_dmic rtw88_pci snd_soc_core rtw88_core snd_hda_codec_realtek snd_compress snd_hda_codec_generic snd_hda_codec_hdmi ac97_bus mac80211 snd_pcm_dmaengine snd_hda_intel
 snd_intel_dspcfg snd_hda_codec edac_mce_amd snd_hda_core kvm_amd snd_hwdep cfg80211 kvm snd_seq snd_seq_device snd_pcm irqbypass huawei_wmi rapl snd_timer ledtrig_audio sparse_keymap joydev snd_rn_pci_acp3x pcspkr sp5100_tco snd rfkill wmi_bmof i2c_piix4 libarc4 k10temp snd_pci_acp3x soundcore acpi_cpufreq ip_tables amdgpu iommu_v2 gpu_sched hid_multitouch i2c_algo_bit ttm drm_kms_helper crct10dif_pclmul crc32_pclmul crc32c_intel cec ghash_clmulni_intel drm serio_raw nvme ccp nvme_core wmi video pinctrl_amd i2c_hid fuse
CPU: 7 PID: 11768 Comm: systemd-sleep Tainted: G           O      5.8.18-200.fc32.x86_64 #1
Hardware name: HUAWEI NBLK-WAX9X/NBLK-WAX9X-PCB, BIOS 1.05 12/04/2019
RIP: 0010:dc_link_set_backlight_level+0x8a/0xf0 [amdgpu]
Code: 30 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 c8 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:ffffb3e142dc3cb0 EFLAGS: 00010246
RAX: 0000000000000006 RBX: ffff9a7437640800 RCX: 0000000000000000
RDX: ffff9a728de81e70 RSI: ffff9a728de80000 RDI: 0000000000000000
RBP: ffff9a7437630000 R08: 000000000000004c R09: ffff9a74376f2968
R10: 0000000000000051 R11: 0000000000000000 R12: 0000000000004e01
R13: 0000000000000000 R14: 0000000000004e69 R15: 0000000000000002
FS:  00007fb2b0c7eb80(0000) GS:ffff9a7447bc0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f86ac862794 CR3: 000000002bbe2000 CR4: 00000000003406e0
Call Trace:
 amdgpu_dm_backlight_update_status+0xb4/0xc0 [amdgpu]
 backlight_suspend+0x6a/0x80
 ? brightness_store+0x50/0x50
 dpm_run_callback+0x4f/0x140
 __device_suspend+0x11c/0x4a0
 dpm_suspend+0x117/0x250
 dpm_suspend_start+0x77/0x80
 suspend_devices_and_enter+0xe6/0x7f0
 pm_suspend.cold+0x333/0x38c
 state_store+0x71/0xd0
 kernfs_fop_write+0xce/0x1b0
 vfs_write+0xc7/0x1f0
 ksys_write+0x4f/0xc0
 do_syscall_64+0x4d/0x90
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fb2b1d98537
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:00007fff8626c8c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fb2b1d98537
RDX: 0000000000000004 RSI: 00007fff8626c9b0 RDI: 0000000000000004
RBP: 00007fff8626c9b0 R08: 000055cfcbaa4c40 R09: 000000000000000d
R10: 000055cfcbaa0e50 R11: 0000000000000246 R12: 0000000000000004
R13: 000055cfcbaa03e0 R14: 0000000000000004 R15: 00007fb2b1e6a700