[10995.541769] ------------[ cut here ]------------
[10995.541793] WARNING: CPU: 3 PID: 2509 at drivers/firmware/raspberrypi.c:64 rpi_firmware_property_list+0x1f4/0x260
[10995.541798] Firmware transaction timeout
[10995.541802] Modules linked in: rfcomm cmac algif_hash aes_arm_bs crypto_simd cryptd algif_skcipher af_alg bnep hci_uart btbcm bluetooth ecdh_generic ecc bme680_i2c bme680_core industrialio regmap_i2c imx219 joydev 8021q garp stp llc brcmfmac brcmutil sha256_generic raspberrypi_ts cfg80211 raspberrypi_hwmon rfkill i2c_mux_pinctrl i2c_mux bcm2835_unicam v4l2_dv_timings v4l2_fwnode snd_bcm2835(C) snd_pcm bcm2835_codec(C) snd_timer bcm2835_isp(C) bcm2835_v4l2(C) v4l2_mem2mem bcm2835_mmal_vchiq(C) videobuf2_dma_contig videobuf2_vmalloc snd videobuf2_memops videobuf2_v4l2 i2c_bcm2835 videobuf2_common videodev mc vc_sm_cma(C) rpi_backlight uio_pdrv_genirq uio fixed i2c_dev drm drm_panel_orientation_quirks backlight fuse ip_tables x_tables ipv6
[10995.542125] CPU: 3 PID: 2509 Comm: Xorg Tainted: G         C        5.10.63-v7+ #1459
[10995.542129] Hardware name: BCM2835
[10995.542132] Backtrace: 
[10995.542144] [<809f0cb0>] (dump_backtrace) from [<809f1040>] (show_stack+0x20/0x24)
[10995.542151]  r7:ffffffff r6:00000000 r5:60000013 r4:80fe5e54
[10995.542158] [<809f1020>] (show_stack) from [<809f5250>] (dump_stack+0xcc/0xf8)
[10995.542168] [<809f5184>] (dump_stack) from [<8011eca0>] (__warn+0xfc/0x114)
[10995.542175]  r10:00000000 r9:00000009 r8:8082ced8 r7:00000040 r6:00000009 r5:8082ced8
[10995.542178]  r4:80d6cf54 r3:80f05050
[10995.542185] [<8011eba4>] (__warn) from [<809f16c0>] (warn_slowpath_fmt+0xa4/0xd8)
[10995.542191]  r7:00000040 r6:80d6cf54 r5:80f05008 r4:80d6cf74
[10995.542199] [<809f1620>] (warn_slowpath_fmt) from [<8082ced8>] (rpi_firmware_property_list+0x1f4/0x260)
[10995.542206]  r9:00000010 r8:80f05008 r7:815bc2c0 r6:b4003000 r5:00001000 r4:00000012
[10995.542214] [<8082cce4>] (rpi_firmware_property_list) from [<8082cfb4>] (rpi_firmware_property+0x70/0x118)
[10995.542221]  r10:8d93684c r9:0004800f r8:00000010 r7:815bc2c0 r6:86269d40 r5:00000004
[10995.542223]  r4:8d936840
[10995.542235] [<8082cf44>] (rpi_firmware_property) from [<7f18b06c>] (rpi_backlight_update_status+0x6c/0xd8 [rpi_backlight])
[10995.542242]  r10:0000000b r9:7f0a4bc4 r8:82ecd000 r7:82ecd030 r6:82ecd048 r5:82f16340
[10995.542245]  r4:80f05008 r3:00000004
[10995.542262] [<7f18b000>] (rpi_backlight_update_status [rpi_backlight]) from [<7f0a4ce0>] (fb_notifier_callback+0x11c/0x13c [backlight])
[10995.542266]  r6:82ecd048 r5:82ecd01c r4:82ecd048
[10995.542280] [<7f0a4bc4>] (fb_notifier_callback [backlight]) from [<801457c0>] (blocking_notifier_call_chain+0x78/0x9c)
[10995.542287]  r9:7f0a4bc4 r8:80fe6f18 r7:86269dd4 r6:00000009 r5:ffffffff r4:00000000
[10995.542298] [<80145748>] (blocking_notifier_call_chain) from [<806927c8>] (fb_notifier_call_chain+0x28/0x2c)
[10995.542304]  r9:86268000 r8:820500b0 r7:00000001 r6:82612540 r5:00000000 r4:80f05008
[10995.542313] [<806927a0>] (fb_notifier_call_chain) from [<80692cb0>] (fb_blank+0x90/0xa0)
[10995.542322] [<80692c20>] (fb_blank) from [<806944c0>] (do_fb_ioctl+0x27c/0x58c)
[10995.542326]  r5:820500a0 r4:80f05008
[10995.542332] [<80694244>] (do_fb_ioctl) from [<8069481c>] (fb_ioctl+0x4c/0x58)
[10995.542338]  r10:0000000b r9:86268000 r8:00000000 r7:82612540 r6:82612540 r5:80f05008
[10995.542341]  r4:00004611
[10995.542350] [<806947d0>] (fb_ioctl) from [<8034a468>] (sys_ioctl+0x1d4/0x8ec)
[10995.542358] [<8034a294>] (sys_ioctl) from [<80100040>] (ret_fast_syscall+0x0/0x28)
[10995.542362] Exception stack(0x86269fa8 to 0x86269ff0)
[10995.542367] 9fa0:                   01af7718 01af7be8 0000000b 00004611 00000001 00000000
[10995.542374] 9fc0: 01af7718 01af7be8 00000001 00000036 000906f0 0020c000 0000000a 7ebc6e54
[10995.542378] 9fe0: 76172034 7ebc6b9c 7615fcc0 769da1ac
[10995.542385]  r10:00000036 r9:86268000 r8:80100204 r7:00000036 r6:00000001 r5:01af7be8
[10995.542388]  r4:01af7718
[10995.542392] ---[ end trace 4c380dffd9ad152e ]---