[Bug 260160] zfs jailed: snapshots not accessible

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=260160

--- Comment #10 from Martin Matuska <mm@FreeBSD.org> ---
I have the following comment from Mateusz Guzik <mjg@FreeBSD.org> oh this
patch:

On 29. 3. 2022 17:53, Mateusz Guzik wrote:
> whoa, stop right there.
>
> The commit at hand introduces a security problem by modifying proc
> credentials. Another thread in the same process can race to snatch
> these creds permanently for itself.
>
> The patch is definitely wrong. 

I don't want to open a security hole, we need a new fix for this.

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