ACK/cmt: [SRU][UNSTABLE][PATCH] UBUNTU: SAUCE: shiftfs: record correct creator credentials

Seth Forshee seth.forshee at
Fri Apr 10 15:06:32 UTC 2020

On Fri, Apr 10, 2020 at 04:55:28PM +0200, Christian Brauner wrote:
> From: Christian Brauner <christian.brauner at>
> BugLink:
> When shiftfs is nested we failed to be able to create any files or
> access directories because we recorded the wrong creator credentials. We
> need to record the credentials of the creator of the lowers mark mount
> of shiftfs. Otherwise we aren't privileged wrt to the shiftfs layer in
> the nesting case. This is similar to how we always record the user
> namespace of the base filesystem.
> Suggested-by: Seth Forshee <seth.forshee at>
> Signed-off-by: Christian Brauner <christian.brauner at>

This looks right to me.

Acked-by: Seth Forshee <seth.forshee at>

Not sure why you only sent this for unstable though. Shouldn't it also
go back to E/F?

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