Linux does not use Co-authored-by. There was no Signed-off-by in the original patch, and the rules say Co-developed-by also requires a Signed-off-by. It was a

Linux does not use Co-authored-by. There was no Signed-off-by in the original patch, and the rules say Co-developed-by also requires a Signed-off-by. It was a security issue and was fixed ASAP, not waiting to hear back from the submitter. https://kernel.org/doc/html/latest/process/submitting-patches.html#when-to-use-acked-by-cc-and-co-developed-by https://kernel.org/doc/html/latest/process/submitting-patche...