On 1/24/22 9:08 PM, QiuLaibin wrote: > Hi Alex > > 1、Please help to import this structure: > > blk_mq_tags <= request_queue->blk_mq_hw_ctx->blk_mq_tags > > If there is no kernel dump, help to see the value of > > cat /sys/block/sda/mq/0/nr_tags > __ <= Change it to the problem device > > And how many block devices in total by lsblk. > > 2、Please describe in detail how to reproduce the issue, > > And what type of USB device? > > 3、Please help to try the attachment patch and see if it can be reproduced. Any progress on this? I strongly suspect that any QD=1 setup would trivially show the issue, based on the reports. -- Jens Axboe
