igt@i915_selftest@live@guc - dmesg-warn - *ERROR* CT: Communication stalled for \d+ ms
https://intel-gfx-ci.01.org/tree/drm-tip/IGT_6589/bat-rpls-1/igt@i915_selftest@live@guc.html
<7> [784.911818] i915 0000:00:02.0: [drm:skl_enable_dc6 [i915]] Enabling DC6
<7> [784.911955] i915 0000:00:02.0: [drm:gen9_set_dc_state.part.15 [i915]] Setting DC state from 00 to 02
<7> [784.913217] i915 0000:00:02.0: [drm:intel_power_well_disable [i915]] disabling PW_2
<7> [784.914398] i915 0000:00:02.0: [drm:hsw_wait_for_power_well_disable [i915]] PW_2 forced on (bios:1 driver:0 kvmr:0 debug:0)
<5> [785.371917] i915 0000:00:02.0: [drm] Resetting chip for selftest reset
<6> [785.378992] i915 0000:00:02.0: [drm] GuC firmware i915/tgl_guc_70.1.1.bin version 70.1
<6> [785.378995] i915 0000:00:02.0: [drm] HuC firmware i915/tgl_huc_7.9.3.bin version 7.9
<7> [785.388367] i915 0000:00:02.0: [drm:guc_enable_communication [i915]] GuC communication enabled
<6> [785.390738] i915 0000:00:02.0: [drm] HuC authenticated
<6> [785.395579] i915 0000:00:02.0: [drm] GuC submission enabled
<6> [785.395580] i915 0000:00:02.0: [drm] GuC SLPC enabled
<6> [785.402403] i915: Running intel_guc_live_selftests/intel_guc_steal_guc_ids
<3> [787.846406] i915 0000:00:02.0: [drm] *ERROR* CT: Communication stalled for 2178 ms, desc status=0x0,0x0
<3> [787.846804] i915 0000:00:02.0: [drm] *ERROR* CT: H2G Space: 44 (Bytes)
<3> [787.846815] i915 0000:00:02.0: [drm] *ERROR* CT: Head: 927 (Dwords)
<3> [787.846822] i915 0000:00:02.0: [drm] *ERROR* CT: Tail: 915 (Dwords)
<3> [787.846829] i915 0000:00:02.0: [drm] *ERROR* CT: G2H Space: 12284 (Bytes)
<3> [787.846836] i915 0000:00:02.0: [drm] *ERROR* CT: Head: 18
(Dwords)
<3> [787.846843] i915 0000:00:02.0: [drm] *ERROR* CT: Tail: 18
(Dwords)
<7> [788.294541] heartbeat rcs0 heartbeat not ticking
<7> [788.294547] heartbeat Awake? 959
<7> [788.294549] heartbeat Barriers?: no
<7> [788.294550] heartbeat Latency: 0us
<7> [788.296363] heartbeat Runtime: 2492ms
<7> [788.296364] heartbeat Forcewake: 0 domains, 0 active
<7> [788.296366] heartbeat Reset count: 0 (global 1)
<7> [788.296367] heartbeat Properties:
<7> [788.296367] heartbeat heartbeat_interval_ms: 2500 [default 2500]
<7> [788.296369] heartbeat max_busywait_duration_ns: 8000 [default 8000]
<7> [788.296370] heartbeat preempt_timeout_ms: 0 [default 0]
<7> [788.296371] heartbeat stop_timeout_ms: 100 [default 100]
<7> [788.296372] heartbeat timeslice_duration_ms: 1 [default 1]
<7> [788.296375] heartbeat Requests: