Re: [PATCH RFC 1/2] ovl: invalidate dentry with deleted real dir

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On Tue, Jul 14, 2020 at 4:05 PM Amir Goldstein <amir73il@xxxxxxxxx> wrote:

> Today, if a user deletes/renames underlying lower that leaves
> the overlayfs dentry in a vulnerable state.
> I do not have a reproducer to OOPS the kernel with that, but
> syzbot has created some crashes of similar nature in the past.

Can you back that up with references?

Don't misunderstand me, I'm all for making behavior more
deterministic, but I'd also like to fully understand the current
behavior.

Thanks,
Miklos



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