New bug created: https://bugs.freedesktop.org/show_bug.cgi?id=107341

However, I would also like to documented that we can also see this bug in GLK:

https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_74/fi-glk-dsi/igt@gem_exec_schedule@deep-render.html

https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_76/fi-glk-dsi/igt@gem_exec_schedule@deep-vebox.html

https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_76/fi-glk-dsi/igt@gem_exec_schedule@deep-bsd.html

(gem_exec_schedule:1158) igt_vgem-CRITICAL: Test assertion failure function
vgem_fence_signal, file ../lib/igt_vgem.c:193:
(gem_exec_schedule:1158) igt_vgem-CRITICAL: Failed assertion:
__vgem_fence_signal(fd, fence) == 0
(gem_exec_schedule:1158) igt_vgem-CRITICAL: error: -110 != 0
Subtest deep-bsd failed.