[Bug 210723] [Bug report] overlayfs over xfs whiteout operation may cause deadlock

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=210723

--- Comment #2 from bfoster@redhat.com ---
On Mon, Jan 04, 2021 at 03:09:23PM +0000, bugzilla-daemon@bugzilla.kernel.org
wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=210723
> 
> --- Comment #1 from Dave (chiluk@ubuntu.com) ---
> Has there been any progress on this?  We've been regularly hitting what
> appears
> to be an xfs deadlock on 5.8, 5.9, and now 5.10 on our kubernetes nodes that
> also employ containers and overlayfs.  I haven't been able to do as much
> digging as wenli yet so I don't have any more detailed information.
> 

For whatever reason this bug report has not been synced between bugzilla
and the mailing list. I don't see the initial report on the list at all
and the subsequent replies to the initial thread appear on the list and
not in the bz.

In any event, I believe Darrick root caused and Wenli confirmed a fix
here:

https://lore.kernel.org/linux-xfs/20201217211117.GF38809@magnolia/

... which presumably just needs to be posted/reviewed as a proper patch.

Brian

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