igt@core_hotunplug@unbind-rebind - dmesg-warn - Unclaimed read from register 0xc4000, WARNING:.*at drivers/gpu/drm/i915/intel_uncore.c:\d+ __unclaimed_reg_debug

<7> [198.317197] [drm:drm_helper_probe_single_connector_modes [drm_kms_helper]] [CONNECTOR:321:HDMI-A-1]
<7> [198.317213] i915 0000:00:02.0: [drm:intel_hdmi_detect [i915]] [CONNECTOR:321:HDMI-A-1]
<7> [198.317266] i915 0000:03:00.0: [drm:intel_power_well_enable [i915]] enabling PW_2
<4> [198.318257] ------------[ cut here ]------------
<4> [198.318365] i915 0000:00:02.0: Unclaimed read from register 0xc4000
<4> [198.318391] WARNING: CPU: 3 PID: 68 at drivers/gpu/drm/i915/intel_uncore.c:1681 __unclaimed_reg_debug+0x68/0x80 [i915]
<4> [198.318503] Modules linked in: snd_hda_intel vgem drm_shmem_helper snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio snd_hda_codec_hdmi
<7> [198.318452] i915 0000:03:00.0: [drm:i915_audio_component_get_power [i915]] restored AUD_FREQ_CNTRL to 0x8010
<4> [198.318523] snd_intel_dspcfg snd_hda_codec snd_hwdep snd_hda_core snd_pcm i915 prime_numbers ttm drm_buddy drm_display_helper drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops fuse x86_pkg_temp_thermal mei_hdcp coretemp kvm_intel r8153_ecm cdc_ether kvm usbnet irqbypass r8152 crct10dif_pclmul mii crc32_pclmul ghash_clmulni_intel e1000e i2c_i801 ptp mei_me pps_core i2c_smbus mei intel_lpss_pci [last unloaded: snd_hda_intel]
<4> [198.318623] CPU: 3 PID: 68 Comm: kworker/3:1 Not tainted 6.0.0-rc2-CI_DRM_12023-g108a64715bc9+ #1
<4> [198.318627] Hardware name: Intel Corporation Tiger Lake Client Platform/TigerLake H DDR4 SODIMM RVP, BIOS TGLSFWI1.R00.4064.A00.2102041619 02/04/2021
<4> [198.318630] Workqueue: events output_poll_execute [drm_kms_helper]
<4> [198.318645] RIP: 0010:__unclaimed_reg_debug+0x68/0x80 [i915]
<4> [198.318742] Code: 08 4c 8b 6f 50 4d 85 ed 75 03 4c 8b 2f e8 90 b8 3b e1 41 89 e8 4c 89 e1 4c 89 ea 48 89 c6 48 c7 c7 50 f9 5e a0 e8 d6 ac 74 e1 <0f> 0b 48 8b 43 08 83 a8 7c 0d 00 00 01 eb a0 66 0f 1f 84 00 00 00
<4> [198.318746] RSP: 0018:ffffc900003f7ac8 EFLAGS: 00010082
<4> [198.318751] RAX: 0000000000000000 RBX: ffff8881126d0f40 RCX: 0000000000000003
<4> [198.318754] RDX: 0000000080000003 RSI: 00000000ffff7fff RDI: 00000000ffffffff
<4> [198.318757] RBP: 00000000000c4000 R08: 0000000000000000 R09: c0000000ffff7fff
<4> [198.318760] R10: 0000000000000001 R11: ffffc900003f7960 R12: ffffffffa0645637
<4> [198.318763] R13: ffff888102c13e90 R14: 0000000000003000 R15: 0000000000000206
<4> [198.318766] FS: 0000000000000000(0000) GS:ffff88888f580000(0000) knlGS:0000000000000000
<4> [198.318769] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [198.318772] CR2: 00007f6b28afba18 CR3: 00000001112f0004 CR4: 0000000000770ee0
<4> [198.318776] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
<4> [198.318778] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
<4> [198.318782] PKRU: 55555554
<4> [198.318785] Call Trace:
<4> [198.318788] <TASK>
<4> [198.318795] fwtable_read32+0x249/0x2e0 [i915]
<7> [198.318787] i915 0000:00:02.0: [drm:intel_power_well_enable [i915]] enabling DC_off
<4> [198.318902] lpt_digital_port_connected+0x2e/0x40 [i915]
<4> [198.319043] intel_digital_port_connected+0x4c/0x80 [i915]
<4> [198.319182] intel_hdmi_detect+0x9c/0x150 [i915]
<4> [198.319316] drm_helper_probe_detect+0x7c/0xa0 [drm_kms_helper]
<4> [198.319332] drm_helper_probe_single_connector_modes+0x475/0x540 [drm_kms_helper]
<4> [198.319346] ? _raw_spin_unlock+0x24/0x40
<4> [198.319376] drm_client_modeset_probe+0x265/0xca0
<4> [198.319397] ? __mutex_lock+0x135/0xf10
<4> [198.319413] __drm_fb_helper_initial_config_and_unlock+0x42/0x570 [drm_kms_helper]
<4> [198.319426] ? __mutex_unlock_slowpath+0x3e/0x2b0
<4> [198.319443] drm_kms_helper_hotplug_event+0x1e/0x30 [drm_kms_helper]
<4> [198.319456] output_poll_execute+0x1e4/0x200 [drm_kms_helper]
<4> [198.319479] process_one_work+0x272/0x5b0
<4> [198.319499] worker_thread+0x37/0x370
<4> [198.319508] ? process_one_work+0x5b0/0x5b0
<4> [198.319513] kthread+0xed/0x120
<4> [198.319517] ? kthread_complete_and_exit+0x20/0x20
<4> [198.319526] ret_from_fork+0x1f/0x30
<4> [198.319552] </TASK>
<4> [198.319555] irq event stamp: 1213768
<4> [198.319557] hardirqs last enabled at (1213767): [<ffffffff81b59294>] _raw_spin_unlock_irqrestore+0x54/0x70
<4> [198.319562] hardirqs last disabled at (1213768): [<ffffffff81b5903b>] _raw_spin_lock_irqsave+0x4b/0x50
<4> [198.319566] softirqs last enabled at (1213754): [<ffffffff81e00323>] __do_softirq+0x323/0x48e
<4> [198.319571] softirqs last disabled at (1213737): [<ffffffff810c16a8>] irq_exit_rcu+0xb8/0xe0
<4> [198.319576] ---[ end trace 0000000000000000 ]---