On Mon, Jun 22, 2020 at 07:16:15PM -0700, Bart Van Assche wrote: > On 2020-06-22 05:27, Luis Chamberlain wrote: > > Note: this will bring you sanity if you try to figure out *why* we still > > get: > > > > [235530.144343] debugfs: Directory 'loop0' with parent 'block' already present! > > [235530.149477] blktrace: debugfs_dir not present for loop0 so skipping > > [235530.232328] debugfs: Directory 'loop0' with parent 'block' already present! > > [235530.238962] blktrace: debugfs_dir not present for loop0 so skipping > > > > If you run run_0004.sh from break-blktrace [0]. Even with all my patches > > merged we still run into this. And so the bug lies within the block > > layer or on the driver. I haven't been able to find the issue yet. > > > > [0] https://github.com/mcgrof/break-blktrace > > Thanks Luis for having shared this information. If I can find the time I > will have a look into this myself. Let's keep track of it: https://bugzilla.kernel.org/show_bug.cgi?id=208301 Luis