Its not someone on the same team. Its someone working underneath one of the research members- a grad student who likely had no knowledge of what his supervisor did.
> These are two different projects. The one published at IEEE S&P 2021 has
> completely finished in November 2020. My student Aditya is working on a new
> project that is to find bugs introduced by bad patches. Please do not link
> these two projects together. I am sorry that his new patches are not
> correct either. He did not intentionally make the mistake.
https://lore.kernel.org/lkml/YIBBt6ypFtT+i994@pendragon.idea...
> These are two different projects. The one published at IEEE S&P 2021 has > completely finished in November 2020. My student Aditya is working on a new > project that is to find bugs introduced by bad patches. Please do not link > these two projects together. I am sorry that his new patches are not > correct either. He did not intentionally make the mistake.