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All machines: All tests - map pfn RAM range req write-combining for [mem 0x.*], got write-back

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_10065/shard-tglb7/igt@i915_hangman@engine-error@rcs0.html

6> [292.424942] Console: switching to colour dummy device 80x25
<6> [292.425257] [IGT] i915_hangman: executing
<6> [292.432417] [IGT] i915_hangman: starting subtest engine-error
<6> [292.432926] [IGT] i915_hangman: starting dynamic subtest rcs0
<7> [292.433301] i915 0000:00:02.0: [drm:i915_gem_context_create_ioctl [i915]] HW context 1 created
<4> [292.433595] x86/PAT: i915_hangman:1149 map pfn RAM range req write-combining for [mem 0x115c50000-0x115c50fff], got write-back
<7> [292.434796] i915 0000:00:02.0: [drm:i915_gem_context_create_ioctl [i915]] HW context 1 created
<4> [292.435006] x86/PAT: i915_hangman:1149 map pfn RAM range req write-combining for [mem 0x1186d2000-0x1186d2fff], got write-back
<7> [292.436081] i915 0000:00:02.0: [drm:i915_gem_context_create_ioctl [i915]] HW context 1 created
<4> [292.436260] x86/PAT: i915_hangman:1149 map pfn RAM range req write-combining for [mem 0x113ea1000-0x113ea1fff], got write-back
<7> [292.437400] i915 0000:00:02.0: [drm:i915_gem_context_create_ioctl [i915]] HW context 1 created
<4> [292.437581] x86/PAT: i915_hangman:1149 map pfn RAM range req write-combining for [mem 0x10d725000-0x10d725fff], got write-back
<4> [292.438654] x86/PAT: i915_hangman:1149 map pfn RAM range req write-combining for [mem 0x124aba000-0x124abafff], got write-back
<5> [292.441409] i915 0000:00:02.0: [drm] Resetting rcs0 for CS error
<6> [292.443091] i915 0000:00:02.0: [drm] GPU HANG: ecode 12:1:21724110, in i915_hangman [1149]
Edited by LAKSHMINARAYANA VUDUM
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