On Thu, Aug 19, 2021 at 03:29:38PM +0800, Hillf Danton wrote: > On Wed, 18 Aug 2021 09:10:49 +0200 Sven Schnelle wrote: > > Hi, > > > > i'm seeing the lockdep splat below in CI. I think this is because > > Thanks for reporting it. > > > nbd_open is called with disk->open_mutex held, and acquires > > nbd_index_mutex. However, nbd_put() first takes the nbd_index_lock, > > and calls del_gendisk, which locks disk->open_mutex, so the order is > > reversed. > > Right. See diff attached. This is already fixed in linux-next.
