On Sun, 2018-06-10 at 22:38 +0200, Roman Pen wrote: > It is not allowed to reinit q->tag_set_list list entry while RCU grace > period has not completed yet, otherwise the following soft lockup in > blk_mq_sched_restart() happens:
Please add the following: Fixes: 705cda97ee3a ("blk-mq: Make it safe to use RCU to iterate over blk_mq_tag_set.tag_list") Cc: sta...@vger.kernel.org Anyway: Reviewed-by: Bart Van Assche <bart.vanass...@wdc.com>