On Mon, Sep 20, 2021 at 08:56:04AM +0000, Johannes Thumshirn wrote:

On 20/09/2021 10:48, David Sterba wrote:

quoted

I found the following lockdep report, it's been with recent misc-next
and the functions on stack match what this patch touches but I haven't
done a deeper analysis so this could be a false trace (though the
warning seems legit).

The workload was some file creation/copy and relocation but I don't have
a more specific information.

This looks very much like a lockdep splat I know from zoned mode, but assumed
it's a zoned only problem and pushed on the task stack. Was this test on a 
regular SCSI/SATA drive? 

Yes, it's a multi-device fs, otherwise nothing special about it.