On Mon, 29 Jan 2024 at 09:40, Linus Torvalds
[off-list ref] wrote:

IOW, I think the right fix is really just this:

Oh, for some reason I sent out the original patch I had which didn't
fix the create_dir() case.

So that patch was missing the important hunk that added the

        ti->flags = TRACEFS_EVENT_INODE;
        ti->private = ei;

to create_dir() (to match the removal in eventfs_post_create_dir()).

I had incorrectly put it in the create_file() case, that should just
set ->private to NULL. afaik

So the patch was completely broken. Here's the one that should
actually compile (although still not actually *tested*).

               Linus