CVE-2026-99007 drm/fb-helper: defer setup when fbdev_probe() fails, not just on -EAGAIN

In the Linux kernel, the following vulnerability has been resolved: drm/fb-helper: defer setup when fbdevprobe fails, not just on -EAGAIN drmfbhelperinitialconfigandunlock calls drmclientmodesetprobe first, which already fills in each modeset-mode/numconnectors for every connected output, and onl...