[Intel-gfx] ✗ Ro.CI.BAT: failure for series starting with [1/3] RFC: drm: Restrict vblank ioctl to master

[Patchwork]

== Series Details ==

Series: series starting with [1/3] RFC: drm: Restrict vblank ioctl to master
URL   : https://patchwork.freedesktop.org/series/8674/
State : failure

== Summary ==

Applying: RFC: drm: Restrict vblank ioctl to master
Applying: drm: Mark authmagic ioctls as unlocked
fatal: sha1 information is lacking or useless (drivers/gpu/drm/drm_ioctl.c).
error: could not build fake ancestor
Patch failed at 0002 drm: Mark authmagic ioctls as unlocked
The copy of the patch that failed is found in: .git/rebase-apply/patch
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".