Dmesg
<6> [298.337332] [IGT] i915_hangman: starting dynamic subtest vcs0
<7> [298.338180] i915 0000:00:02.0: [drm:i915_gem_context_create_ioctl [i915]] HW context 2 created
<7> [298.351447] i915 0000:00:02.0: [drm:i915_gem_context_create_ioctl [i915]] HW context 2 created
<7> [298.365493] i915 0000:00:02.0: [drm:i915_gem_context_create_ioctl [i915]] HW context 2 created
<5> [298.385415] i915 0000:00:02.0: [drm] Resetting vcs0 for CS error
<6> [298.391619] i915 0000:00:02.0: [drm] GPU HANG: ecode 9:4:61524110, in i915_hangman [1287]
<3> [298.392074] can_merge_rq:927 GEM_BUG_ON(prev == next)
<0> [298.393926] Dumping ftrace buffer:
<0> [298.394474] ---------------------------------
<0> [298.395043] <...>-253 2.... 29688545us : intel_gt_init_clock_frequency: 0000:00:02.0 Using clock frequency: 12000kHz, period: 84ns, wrap: 180388ms
<0> [298.395851] <...>-253 2.... 29689745us : __intel_gt_reset: 0000:00:02.0 engine_mask=ff
<0> [298.396446] ksoftirq-17 1..s. 30442460us : process_csb: 0000:00:02.0 rcs'0: cs-irq head=5, tail=1
<0> [298.397093] ksoftirq-17 1..s. 30442468us : process_csb: 0000:00:02.0 rcs'0: csb[0]: status=0x00000000:0x00000001
<0> [298.397752] ksoftirq-17 1..s. 30442483us : trace_ports: 0000:00:02.0 rcs'0: promote { ccid:20 4:1! prio 2147483646 }
<0> [298.398396] ksoftirq-17 1..s. 30442494us : process_csb: 0000:00:02.0 rcs'0: csb[1]: status=0x00000020:0x00000818
<0> [298.399070] ksoftirq-17 1..s. 30442504us : trace_ports: 0000:00:02.0 rcs'0: completed { ccid:20 4:1! prio 2147483646 }
<0> [298.399743] ksoftirq-17 1..s. 30442516us : __execlists_schedule_out: 0000:00:02.0 rcs'0: context:4 schedule-out, ccid:20
<0> [298.400387] ksoftirq-17 1..s. 30445779us : process_csb: 0000:00:02.0 bcs'0: cs-irq head=5, tail=1
<0> [298.401134] ksoftirq-17 1..s. 30445785us : process_csb: 0000:00:02.0 bcs'0: csb[0]: status=0x00000000:0x00000001
<0> [298.401841] ksoftirq-17 1..s. 30445797us : trace_ports: 0000:00:02.0 bcs'0: promote { ccid:20 5:1! prio 2147483646 }
<0> [298.402548] ksoftirq-17 1..s. 30445808us : process_csb: 0000:00:02.0 bcs'0: csb[1]: status=0x00000020:0x00000818
<0> [298.403421] ksoftirq-17 1..s. 30445816us : trace_ports: 0000:00:02.0 bcs'0: completed { ccid:20 5:1! prio 2147483646 }
<0> [298.404507] ksoftirq-17 1..s. 30445827us : __execlists_schedule_out: 0000:00:02.0 bcs'0: context:5 schedule-out, ccid:20
<0> [298.405679] ksoftirq-17 1..s. 30447061us : process_csb: 0000:00:02.0 vcs'0: cs-irq head=5, tail=1
<0> [298.406768] ksoftirq-17 1..s. 30447066us : process_csb: 0000:00:02.0 vcs'0: csb[0]: status=0x00000000:0x00000001
<0> [298.407667] ksoftirq-17 1..s. 30447076us : trace_ports: 0000:00:02.0 vcs'0: promote { ccid:20 6:1! prio 2147483646 }
<0> [298.408609] ksoftirq-17 1..s. 30447086us : process_csb: 0000:00:02.0 vcs'0: csb[1]: status=0x00000020:0x00000818
<0> [298.409612] ksoftirq-17 1..s. 30447094us : trace_ports: 0000:00:02.0 vcs'0: completed { ccid:20 6:1! prio 2147483646 }
<0> [298.410317] ksoftirq-17 1..s. 30447104us : __execlists_schedule_out: 0000:00:02.0 vcs'0: context:6 schedule-out, ccid:20
<0> [298.411016] ksoftirq-17 1..s. 30449718us : process_csb: 0000:00:02.0 vecs'0: cs-irq head=5, tail=1
<0> [298.411628] ksoftirq-17 1..s. 30449724us : process_csb: 0000:00:02.0 vecs'0: csb[0]: status=0x00000000:0x00000001
<0> [298.412323] ksoftirq-17 1..s. 30449735us : trace_ports: 0000:00:02.0 vecs'0: promote { ccid:20 7:1! prio 2147483646 }
<0> [298.413015] ksoftirq-17 1..s. 30449746us : process_csb: 0000:00:02.0 vecs'0: csb[1]: status=0x00000020:0x00000818
<0> [298.413655] ksoftirq-17 1..s. 30449754us : trace_ports: 0000:00:02.0 vecs'0: completed { ccid:20 7:1! prio 2147483646 }
<0> [298.414332] ksoftirq-17 1..s. 30449765us : __execlists_schedule_out: 0000:00:02.0 vecs'0: context:7 schedule-out, ccid:20
<0> [298.415027] <...>-208 1..s. 30467251us : process_csb: 0000:00:02.0 rcs'0: cs-irq head=1, tail=2
<0> [298.415623] <...>-208 1..s. 30467257us : process_csb: 0000:00:02.0 rcs'0: csb[2]: status=0x00000000:0x00000001
<0> [298.416291] <...>-208 1..s. 30467269us : trace_ports: 0000:00:02.0 rcs'0: promote { ccid:20 8:2! prio 0 }
<0> [298.416940] <...>-208 1..s. 30467313us : process_csb: 0000:00:02.0 rcs'0: cs-irq head=2, tail=3
<0> [298.417534] <...>-208 1..s. 30467317us : process_csb: 0000:00:02.0 rcs'0: csb[3]: status=0x00000020:0x00000818
<0> [298.418205] <...>-208 1..s. 30467326us : trace_ports: 0000:00:02.0 rcs'0: completed { ccid:20 8:2! prio 0 }
<0> [298.418864] <...>-208 1..s. 30467336us : __execlists_schedule_out: 0000:00:02.0 rcs'0: context:8 schedule-out, ccid:20
<0> [298.419609] <...>-49 1.... 30467552us : i915_request_retire.part.62: 0000:00:02.0 rcs'0: fence 8:2, current 2
<0> [298.420277] <...>-49 1.... 30469053us : intel_context_unpin: 0000:00:02.0 rcs'0: context:8 unpin
<0> [298.421005] <...>-49 1d... 30472632us : __i915_request_commit: 0000:00:02.0 rcs'0: fence 4:2, current 1
<0> [298.421625] <...>-49 1d... 30472684us : __engine_park: 0000:00:02.0 rcs'0: parking
<0> [298.422331] <...>-49 1d.s1 30475142us : __i915_request_submit: 0000:00:02.0 rcs'0: fence 4:2, current 1
<0> [298.422995] <...>-49 1d.s. 30475233us : execlists_submission_tasklet: 0000:00:02.0 rcs'0: context:4 schedule-in, ccid:20
<0> [298.423657] <...>-49 1d.s. 30475248us : trace_ports: 0000:00:02.0 rcs'0: submit { ccid:20 4:2* prio 2147483646 }
<0> [298.424311] <...>-49 1d.H1 30475704us : __intel_context_retire: 0000:00:02.0 rcs'0: context:8 retire runtime: { total:38304ns, avg:38304ns }
<0> [298.425058] <...>-49 1..s. 30476096us : process_csb: 0000:00:02.0 rcs'0: cs-irq head=3, tail=5
<0> [298.425662] <...>-49 1..s. 30476101us : process_csb: 0000:00:02.0 rcs'0: csb[4]: status=0x00000000:0x00000001
<0> [298.426311] <...>-49 1..s. 30476114us : trace_ports: 0000:00:02.0 rcs'0: promote { ccid:20 4:2! prio 2147483646 }
<0> [298.426993] <...>-49 1..s. 30476125us : process_csb: 0000:00:02.0 rcs'0: csb[5]: status=0x00000020:0x00000818
<0> [298.427620] <...>-49 1..s. 30476134us : trace_ports: 0000:00:02.0 rcs'0: completed { ccid:20 4:2! prio 2147483646 }
<0> [298.428307] <...>-49 1..s. 30476146us : __execlists_schedule_out: 0000:00:02.0 rcs'0: context:4 schedule-out, ccid:20
<0> [298.429094] <...>-49 1.... 30476202us : i915_request_retire.part.62: 0000:00:02.0 rcs'0: fence 4:2, current 2
<0> [298.430011] <...>-49 1.... 30476227us : __engine_park: 0000:00:02.0 rcs'0: parked
<0> [298.430792] <...>-49 1.... 30477741us : __gt_park: 0000:00:02.0
<0> [298.431713] <...>-208 1..s. 30480210us : process_csb: 0000:00:02.0 bcs'0: cs-irq head=1, tail=3
<0> [298.432774] <...>-208 1..s. 30480215us : process_csb: 0000:00:02.0 bcs'0: csb[2]: status=0x00000000:0x00000001
<0> [298.433918] <...>-208 1..s. 30480226us : trace_ports: 0000:00:02.0 bcs'0: promote { ccid:20 9:2! prio 0 }
<0> [298.434668] <...>-208 1..s. 30480236us : process_csb: 0000:00:02.0 bcs'0: csb[3]: status=0x00000020:0x00000818
<0> [298.435618] <...>-208 1..s. 30480245us : trace_ports: 0000:00:02.0 bcs'0: completed { ccid:20 9:2! prio 0 }
<0> [298.436292] <...>-208 1..s. 30480256us : __execlists_schedule_out: 0000:00:02.0 bcs'0: context:9 schedule-out, ccid:20
<0> [298.437076] <...>-49 1.... 30480460us : i915_request_retire.part.62: 0000:00:02.0 bcs'0: fence 9:2, current 2
<0> [298.438169] <...>-49 1.... 30480496us : intel_context_unpin: 0000:00:02.0 bcs'0: context:9 unpin