SKL: igt@kms_psr@.* - crash - Received signal SIGSEGV.

https://intel-gfx-ci.01.org/tree/drm-tip/IGT_5745/shard-skl4/igt@kms_psr@sprite_mmap_gtt.html

Starting subtest: sprite_mmap_gtt
Received signal SIGSEGV.
Stack trace: 
 #0 [fatal_sig_handler+0xd6]
 #1 [killpg+0x40]
 #2 [test_setup.constprop.8+0xa7]
 #3 [__real_main429+0x8c5]
 #4 [main+0x3f]
 #5 [__libc_start_main+0xe7]
 #6 [_start+0x2a]
Subtest sprite_mmap_gtt: CRASH (0.044s)

6> [211.582209] [IGT] kms_psr: starting subtest sprite_mmap_gtt
<7> [211.583586] i915 0000:00:02.0: [drm:i915_edp_psr_debug_set [i915]] Setting PSR debug to f
<7> [211.584150] i915 0000:00:02.0: [drm:intel_psr_debug_set [i915]] Invalid debug mask f
<7> [211.584970] i915 0000:00:02.0: [drm:i915_edp_psr_debug_set [i915]] Setting PSR debug to 3
<7> [211.627925] i915 0000:00:02.0: [drm:i915_edp_psr_debug_set [i915]] Setting PSR debug to f
<7> [211.628319] i915 0000:00:02.0: [drm:intel_psr_debug_set [i915]] Invalid debug mask f
<7> [211.629160] i915 0000:00:02.0: [drm:i915_edp_psr_debug_set [i915]] Setting PSR debug to 1