On 2020-05-29 00:56, Luis Chamberlain wrote: > On Wed, May 27, 2020 at 06:15:10PM -0700, Bart Van Assche wrote: >> How about adding a lockdep_assert_held(&q->blk_trace_mutex) statement in >> do_blk_trace_setup()? > > Sure, however that doesn't seem part of the fix. How about adding that > as a separat patch? That sounds good to me. Thanks, Bart.