blk_mq_tagset_busy_iter is not safe that it could get stale request in tags->rqs[]. Use blk_mq_queue_tag_inflight_iter here. Signed-off-by: Jianchao Wang <jianchao.w.wang@xxxxxxxxxx> --- block/blk-mq-debugfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c index ec1d18c..b7f2538 100644 --- a/block/blk-mq-debugfs.c +++ b/block/blk-mq-debugfs.c @@ -438,7 +438,7 @@ static int hctx_busy_show(void *data, struct seq_file *m) struct blk_mq_hw_ctx *hctx = data; struct show_busy_params params = { .m = m, .hctx = hctx }; - blk_mq_tagset_busy_iter(hctx->queue->tag_set, hctx_show_busy_rq, + blk_mq_queue_tag_inflight_iter(hctx->queue, hctx_show_busy_rq, ¶ms); return 0; -- 2.7.4