> You contributed something to the patch, and even if it wasn't in your preferred final form (and it's basically never going to be for a kernel contribution of any significance), you were correctly credited.
I don't see how the "signed-off-by" attestation constitutes correct credit here. It's claiming that GP saw the final result and approved of it, which is apparently false.
Signed-off-by is a chain. The second person asserts that they delegate to the first person for the parts contributed by the first, and signs off on the ones that were contributed personally.
Hypothetically in court you'd go to the last, ask "did you write this" and only if not go up.