igt@prime_vgem@basic-fence-flip - crash - Received signal SIGSEGV, CRASH

https://intel-gfx-ci.01.org/tree/drm-tip/IGT_6499/bat-atsm-1/igt@prime_vgem@basic-fence-flip.html

Starting subtest: basic-fence-flip
Received signal SIGSEGV.
Stack trace: 
 #0 [fatal_sig_handler+0xd6]
 #1 [killpg+0x40]
 #2 [igt_display_require+0x260]
 #3 [test_flip+0x4b]
 #4 [__igt_unique____real_main1116+0x1abe]
 #5 [main+0x27]
 #6 [__libc_start_main+0xf3]
 #7 [_start+0x2a]
Subtest basic-fence-flip: CRASH (0.014s)

<6> [271.245383] Console: switching to colour dummy device 80x25
<6> [271.245456] [IGT] prime_vgem: executing
<7> [271.270590] i915 0000:4d:00.0: [drm:i915_gem_context_create_ioctl [i915]] HW context 1 created
<7> [271.270825] i915 0000:4d:00.0: [drm:i915_gem_context_create_ioctl [i915]] HW context 1 created
<7> [271.270991] i915 0000:4d:00.0: [drm:i915_gem_context_create_ioctl [i915]] HW context 1 created
<7> [271.271185] i915 0000:4d:00.0: [drm:i915_gem_context_create_ioctl [i915]] HW context 1 created
<7> [271.271328] i915 0000:4d:00.0: [drm:i915_gem_context_create_ioctl [i915]] HW context 1 created
<7> [271.271481] i915 0000:4d:00.0: [drm:i915_gem_context_create_ioctl [i915]] HW context 1 created
<6> [271.271724] [IGT] prime_vgem: starting subtest basic-fence-flip
<7> [271.287452] i915 0000:4d:00.0: [drm:i915_gem_context_create_ioctl [i915]] HW context 1 created
<7> [271.288028] i915 0000:4d:00.0: [drm:i915_gem_context_create_ioctl [i915]] HW context 1 created
<6> [271.289930] [IGT] prime_vgem: exiting, ret=139
<6> [271.313990] Console: switching to colour frame buffer device 128x48