<6> [205.959296] Console: switching to colour dummy device 80x25
<6> [205.959564] [IGT] i915_pm_backlight: executing
<7> [205.962213] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [205.962671] i915 0000:00:02.0: [drm:i915_drop_caches_set [i915]] Dropping...
<7> [205.962806] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [205.968831] [drm:drm_helper_probe_single_connector_modes [drm_kms_helper]...
<7> [205.968849] i915 0000:00:02.0: [drm:intel_dp_detect [i915]] [CONNECTOR:24...
<7> [205.969022] [drm:drm_helper_probe_single_connector_modes [drm_kms_helper]...
<7> [205.969407] [drm:drm_helper_probe_single_connector_modes [drm_kms_helper]...
<7> [205.969417] i915 0000:00:02.0: [drm:intel_hdmi_detect [i915]] [CONNECTOR:...
<4> [205.998266] 
<4> [205.998277] ======================================================
<4> [205.998282] WARNING: possible circular locking dependency detected
<4> [205.998286] 6.5.0-linus-v6.5-g2dde18cd1d8f+ #1 Not tainted
<4> [205.998291] ------------------------------------------------------
<4> [205.998293] kworker/4:1H/177 is trying to acquire lock:
<4> [205.998298] ffff88810c5d5110 (&gt->reset.backoff_srcu){++++}-{0:0}, at: _...
...

<6> [217.240881] Console: switching to colour dummy device 80x25
<6> [217.241188] [IGT] i915_pm_backlight: executing
<7> [217.244418] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [217.244902] i915 0000:00:02.0: [drm:i915_drop_caches_set [i915]] Dropping...
<7> [217.245073] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [217.251552] [drm:drm_helper_probe_single_connector_modes [drm_kms_helper]...
<7> [217.251570] i915 0000:00:02.0: [drm:intel_dp_detect [i915]] [CONNECTOR:24...
<7> [217.251737] [drm:drm_helper_probe_single_connector_modes [drm_kms_helper]...
<7> [217.252127] [drm:drm_helper_probe_single_connector_modes [drm_kms_helper]...
<7> [217.252138] i915 0000:00:02.0: [drm:intel_hdmi_detect [i915]] [CONNECTOR:...
<4> [217.263517] 
<4> [217.263520] ======================================================
<4> [217.263521] WARNING: possible circular locking dependency detected
<4> [217.263523] 6.5.0-rc6-linus-v6.5-rc6-g2ccdd1b13c59+ #1 Not tainted
<4> [217.263524] ------------------------------------------------------
<4> [217.263525] kworker/0:1H/147 is trying to acquire lock:
<4> [217.263526] ffff888114495110 (&gt->reset.backoff_srcu){++++}-{0:0}, at: _...
...

<6> [220.163432] Console: switching to colour dummy device 80x25
<6> [220.163692] [IGT] i915_pm_backlight: executing
<7> [220.166213] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [220.166669] i915 0000:00:02.0: [drm:i915_drop_caches_set [i915]] Dropping...
<7> [220.166819] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [220.173348] [drm:drm_helper_probe_single_connector_modes [drm_kms_helper]...
<7> [220.173366] i915 0000:00:02.0: [drm:intel_dp_detect [i915]] [CONNECTOR:24...
<7> [220.173526] [drm:drm_helper_probe_single_connector_modes [drm_kms_helper]...
<7> [220.173918] [drm:drm_helper_probe_single_connector_modes [drm_kms_helper]...
<7> [220.173929] i915 0000:00:02.0: [drm:intel_hdmi_detect [i915]] [CONNECTOR:...
<7> [220.224996] i915 0000:00:02.0: [drm:do_gmbus_xfer [i915]] GMBUS [i915 gmb...
<7> [220.242096] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapte...
<7> [220.242103] i915 0000:00:02.0: [drm:intel_hdmi_set_edid [i915]] HDMI GMBU...
<7> [220.242229] i915 0000:00:02.0: [drm:intel_gmbus_force_bit [i915]] enablin...
<7> [220.259138] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapte...
<7> [220.259143] i915 0000:00:02.0: [drm:intel_gmbus_force_bit [i915]] disabli...
<7> [220.259249] [drm:drm_helper_probe_single_connector_modes [drm_kms_helper]...
...

<4> [236.204294] 
<4> [236.204308] ======================================================
<4> [236.204326] WARNING: possible circular locking dependency detected
<4> [236.204345] 6.5.0-rc4-linus-v6.5-rc4-g5d0c230f1de8+ #1 Not tainted
<4> [236.204362] ------------------------------------------------------
<4> [236.204380] kworker/0:0H/8 is trying to acquire lock:
<4> [236.204395] ffff88811735d110 (&gt->reset.backoff_srcu){++++}-{0:0}, at: _...
<4> [236.204584] 
but task is already holding lock:
<4> [236.204609] ffffc900000d3e40 ((work_completion)(&(&guc->timestamp.work)->...
<4> [236.204641] 
which lock already depends on the new lock.

<4> [236.204676] 
the existing dependency chain (in reverse order) is:
<4> [236.204706] 
-> #3 ((work_completion)(&(&guc->timestamp.work)->work)){+.+.}-{0:0}:
...

<4> [224.427258] 
<4> [224.427271] ======================================================
<4> [224.427286] WARNING: possible circular locking dependency detected
<4> [224.427300] 6.4.0-linus-v6.4-g6995e2de6891+ #1 Not tainted
<4> [224.427312] ------------------------------------------------------
<4> [224.427326] kworker/0:1H/136 is trying to acquire lock:
<4> [224.427338] ffff888108f9ce48 (&gt->reset.backoff_srcu){++++}-{0:0}, at: _...
<4> [224.427511] 
but task is already holding lock:
<4> [224.427530] ffffc9000116be60 ((work_completion)(&(&guc->timestamp.work)->...
<4> [224.427558] 
which lock already depends on the new lock.

<4> [224.427585] 
the existing dependency chain (in reverse order) is:
<4> [224.427610] 
-> #3 ((work_completion)(&(&guc->timestamp.work)->work)){+.+.}-{0:0}:
...

<6> [243.330672] Console: switching to colour dummy device 80x25
<6> [243.330924] [IGT] i915_pm_backlight: executing
<7> [243.333948] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [243.334409] i915 0000:00:02.0: [drm:i915_drop_caches_set [i915]] Dropping...
<7> [243.334553] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [243.340879] [drm:drm_helper_probe_single_connector_modes [drm_kms_helper]...
<7> [243.340895] i915 0000:00:02.0: [drm:intel_dp_detect [i915]] [CONNECTOR:24...
<7> [243.341067] [drm:drm_helper_probe_single_connector_modes [drm_kms_helper]...
<7> [243.341454] [drm:drm_helper_probe_single_connector_modes [drm_kms_helper]...
<7> [243.341465] i915 0000:00:02.0: [drm:intel_hdmi_detect [i915]] [CONNECTOR:...
<4> [243.374345] 
<4> [243.374356] ======================================================
<4> [243.374360] WARNING: possible circular locking dependency detected
<4> [243.374364] 6.4.0-rc7-linus-v6.4-rc7-g45a3e24f65e9+ #1 Not tainted
<4> [243.374368] ------------------------------------------------------
<4> [243.374371] kworker/2:1H/142 is trying to acquire lock:
<4> [243.374375] ffff888108f64e48 (&gt->reset.backoff_srcu){++++}-{0:0}, at: _...
...

<4> [232.619293] 
<4> [232.619304] ======================================================
<4> [232.619319] WARNING: possible circular locking dependency detected
<4> [232.619333] 6.4.0-rc5-linus-v6.4-rc5-g9561de3a55be+ #1 Not tainted
<4> [232.619348] ------------------------------------------------------
<4> [232.619363] kworker/4:1H/169 is trying to acquire lock:
<4> [232.619375] ffff88814cb2ce48 (&gt->reset.backoff_srcu){++++}-{0:0}, at: _...
<4> [232.619563] 
but task is already holding lock:
<4> [232.619584] ffffc900012a3e60 ((work_completion)(&(&guc->timestamp.work)->...
<4> [232.619612] 
which lock already depends on the new lock.

<4> [232.619641] 
the existing dependency chain (in reverse order) is:
<4> [232.619666] 
-> #3 ((work_completion)(&(&guc->timestamp.work)->work)){+.+.}-{0:0}:
...

<6> [212.559294] Console: switching to colour dummy device 80x25
<6> [212.559571] [IGT] i915_pm_backlight: executing
<7> [212.561237] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [212.561694] i915 0000:00:02.0: [drm:i915_drop_caches_set [i915]] Dropping...
<7> [212.561807] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [212.567966] [drm:drm_helper_probe_single_connector_modes [drm_kms_helper]...
<7> [212.567985] i915 0000:00:02.0: [drm:intel_dp_detect [i915]] [CONNECTOR:24...
<7> [212.568155] [drm:drm_helper_probe_single_connector_modes [drm_kms_helper]...
<7> [212.568543] [drm:drm_helper_probe_single_connector_modes [drm_kms_helper]...
<7> [212.568554] i915 0000:00:02.0: [drm:intel_hdmi_detect [i915]] [CONNECTOR:...
<7> [212.619175] i915 0000:00:02.0: [drm:do_gmbus_xfer [i915]] GMBUS [i915 gmb...
<7> [212.636313] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapte...
<7> [212.636320] i915 0000:00:02.0: [drm:intel_hdmi_set_edid [i915]] HDMI GMBU...
<7> [212.636428] i915 0000:00:02.0: [drm:intel_gmbus_force_bit [i915]] enablin...
<4> [212.652531] 
<4> [212.652534] ======================================================
<4> [212.652535] WARNING: possible circular locking dependency detected
...

<4> [231.593317] 
<4> [231.593332] ======================================================
<4> [231.593351] WARNING: possible circular locking dependency detected
<4> [231.593368] 6.4.0-rc2-linus-v6.4-rc2-gf1fcbaa18b28+ #1 Not tainted
<4> [231.593386] ------------------------------------------------------
<4> [231.593401] kworker/6:1H/170 is trying to acquire lock:
<4> [231.593416] ffff88810f814e48 (&gt->reset.backoff_srcu){++++}-{0:0}, at: _...
<4> [231.593611] 
but task is already holding lock:
<4> [231.593634] ffffc900012a3e60 ((work_completion)(&(&guc->timestamp.work)->...
<4> [231.593667] 
which lock already depends on the new lock.

<4> [231.593698] 
the existing dependency chain (in reverse order) is:
<4> [231.593725] 
-> #3 ((work_completion)(&(&guc->timestamp.work)->work)){+.+.}-{0:0}:
...

<6> [222.722833] Console: switching to colour dummy device 80x25
<6> [222.723142] [IGT] i915_pm_backlight: executing
<7> [222.725360] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [222.725761] i915 0000:00:02.0: [drm:i915_drop_caches_set [i915]] Dropping...
<7> [222.725925] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [222.732373] [drm:drm_helper_probe_single_connector_modes [drm_kms_helper]...
<7> [222.732391] i915 0000:00:02.0: [drm:intel_dp_detect [i915]] [CONNECTOR:24...
<7> [222.732569] [drm:drm_helper_probe_single_connector_modes [drm_kms_helper]...
<7> [222.732953] [drm:drm_helper_probe_single_connector_modes [drm_kms_helper]...
<7> [222.732964] i915 0000:00:02.0: [drm:intel_hdmi_detect [i915]] [CONNECTOR:...
<7> [222.784203] i915 0000:00:02.0: [drm:do_gmbus_xfer [i915]] GMBUS [i915 gmb...
<7> [222.801288] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapte...
<7> [222.801295] i915 0000:00:02.0: [drm:intel_hdmi_set_edid [i915]] HDMI GMBU...
<7> [222.801410] i915 0000:00:02.0: [drm:intel_gmbus_force_bit [i915]] enablin...
<7> [222.818271] [drm:drm_do_probe_ddc_edid] drm: skipping non-existent adapte...
<7> [222.818274] i915 0000:00:02.0: [drm:intel_gmbus_force_bit [i915]] disabli...
<7> [222.818383] [drm:drm_helper_probe_single_connector_modes [drm_kms_helper]...
...