<6> [384.353099] Console: switching to colour dummy device 80x25
<6> [384.353412] [IGT] gem_mmap_offset: executing
<7> [384.359892] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [384.361127] i915 0000:00:02.0: [drm:i915_drop_caches_set [i915]] Dropping...
<7> [384.372871] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<6> [384.373858] [IGT] gem_mmap_offset: starting subtest clear
<6> [384.374306] [IGT] gem_mmap_offset: starting dynamic subtest smem0
<7> [384.376395] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [384.377148] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [384.377168] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [384.377897] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [384.377864] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [384.378783] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [384.378657] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [384.379119] i915 0000:00:02.0: [drm:i915_drop_caches_set [i915]] Dropping...
<7> [384.379152] i915 0000:00:02.0: [drm:i915_drop_caches_set [i915]] Dropping...
<7> [384.379154] i915 0000:00:02.0: [drm:i915_drop_caches_set [i915]] Dropping...
...

<4> [237.223499]  intel_iommu_tlb_sync+0x26/0x50
<4> [237.223525]  i915_gem_gtt_prepare_pages+0x59/0x100 [i915]
<4> [237.223822]  ____i915_gem_object_get_pages+0x3f/0x120 [i915]
<4> [237.223950]  __i915_gem_object_get_pages+0xa5/0x110 [i915]
<4> [237.224075]  i915_vma_get_pages+0xf9/0x300 [i915]
<4> [237.224212]  i915_vma_pin_ww+0xf5/0x1390 [i915]
<4> [237.224623]  i915_gem_do_execbuffer+0xda3/0x36e0 [i915]
<4> [237.224793]  i915_gem_execbuffer2_ioctl+0x169/0x320 [i915]
<4> [237.224925]  ? __pfx_i915_gem_execbuffer2_ioctl+0x10/0x10 [i915]
<4> [237.225053]  drm_ioctl_kernel+0xb3/0x120
<4> [237.225057]  drm_ioctl+0x2d4/0x5a0
<4> [237.225058]  ? __pfx_i915_gem_execbuffer2_ioctl+0x10/0x10 [i915]
<4> [237.225295]  intel_iommu_tlb_sync+0x26/0x50
<4> [237.225320]  i915_gem_gtt_prepare_pages+0x59/0x100 [i915]
<4> [237.225594]  ____i915_gem_object_get_pages+0x3f/0x120 [i915]
<4> [237.225726]  __i915_gem_object_get_pages+0xa5/0x110 [i915]
<4> [237.225856]  i915_vma_get_pages+0xf9/0x300 [i915]
...

<6> [268.157445] Console: switching to colour dummy device 80x25
<6> [268.157785] [IGT] gem_mmap_offset: executing
<7> [268.160234] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [268.160766] i915 0000:00:02.0: [drm:i915_drop_caches_set [i915]] Dropping...
<7> [268.161004] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<6> [268.161632] [IGT] gem_mmap_offset: starting subtest clear
<6> [268.162101] [IGT] gem_mmap_offset: starting dynamic subtest smem0
<7> [268.162774] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [268.162822] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [268.163101] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [268.163401] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [268.163443] i915 0000:00:02.0: [drm:i915_drop_caches_set [i915]] Dropping...
<7> [268.163485] i915 0000:00:02.0: [drm:i915_drop_caches_set [i915]] Dropping...
<7> [268.163641] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
<7> [268.163744] i915 0000:00:02.0: [drm:i915_drop_caches_set [i915]] Dropping...
<7> [268.163858] i915 0000:00:02.0: [drm:i915_drop_caches_set [i915]] Dropping...
<7> [268.164032] i915 0000:00:02.0: [drm:i915_gem_open [i915]] 
...