The linux kernel isn't a reward and while I empathize with the OP I would absolutely prefer a better solution to maintain than one from the community. So the maintainer was well within their rights.

That said, it's so easy to just give people who contributed to the fix attribution, in Node.js we make a point of trying to give credit in release notes and add `Co-Authored-By:` to PRs where we took _some_ work people did in PRs and adapted it.

When you maintain something for a while, credit often stops being important to you (you _are_ the maintainer of the area after all) so it's hard to remember that for new contributors it's often very important.

Totally a loss for OP and that part of linux that the maintainer wasn't more attentive to the fact sharing credit (especially when deserved like in this case) was important to OP.