The previous regular expression only matches the line starting with "Signed-off-by:". If the name and mail address are missing, it can not find out. The following words should be "name <mail@xxx.com>". Change-Id: I42cc399e79b65928a6aef87c51e5476c7158d166 Signed-off-by: Zheng Bao <fishbaozi@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/73340 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>