On Sun, Aug 15, 2021 at 07:27:37AM -0700, Guenter Roeck wrote:
> [ 14.467748][ T1] Possible unsafe locking scenario:
> [ 14.467748][ T1]
> [ 14.467928][ T1] CPU0 CPU1
> [ 14.468058][ T1] ---- ----
> [ 14.468187][ T1] lock(&disk->open_mutex);
> [ 14.468317][ T1] lock(mtd_table_mutex);
> [ 14.468493][ T1] lock(&disk->open_mutex);
> [ 14.468671][ T1] lock(mtd_table_mutex);
Oh, that ooks like a really old one, fixed by
b7abb0516822 ("mtd: fix lock hierarchy in deregister_mtd_blktrans")
in linux-next.
