On Mon, 16 Apr 2018 12:28:21 -0700 Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote: > On Mon, Apr 16, 2018 at 12:24 PM, Steven Rostedt <rostedt@xxxxxxxxxxx> wrote: > > > > Right, but the fix to the API was also trivial. I don't understand why > > you are arguing with me. I agree with you. I'm talking about this > > specific instance. Where a bug was fixed, and the API breakage was > > another fix that needed to be backported. > > Fair enough. Were you there when the report of breakage came in? No I wasn't. > > Because *my* argument is that reverting something that causes problems > is simply *never* the wrong answer. > > If you know of the fix, fine. But clearly people DID NOT KNOW. So > reverting was the right choice. But I don't see in the git history that this was ever reverted. My reply saying that "I hope it wasn't reverted", was a response for it being reverted in stable, not mainline. Considering that the original bug would allow userspace to write zeros anywhere in memory, I would have definitely worked on finding why the API breakage happened and fixing it properly before putting such a large hole back into the kernel. I'm assuming that may have been what happened because the commit was never reverted in your tree, and if I was responsible for that code, I would be up all night looking for an API fix to make sure the original fix isn't reverted. -- Steve