On Thu, Jan 11, 2024 at 09:12:23AM -0700, Jens Axboe wrote: > On 1/11/24 6:57 AM, Christoph Hellwig wrote: > > q_usage_counter is the only thing preventing us from the limits changing > > under us in __bio_split_to_limits, but blk_mq_submit_bio doesn't hold it. > > > > Change __submit_bio to always acquire the q_usage_counter counter before > > branching out into bio vs request based helper, and let blk_mq_submit_bio > > tell it if it consumed the reference by handing it off to the request. > > This causes hangs for me on shutdown/reset: > which seems to indicate that a reference is being leaked. Haven't poked > any further at it, I'll drop these two for now. Can you send me your .config?
