Changes in v2: - in patch 3, instead of clear and then reset the flag if rq is not completed, test first and clear if rq is going to complete. path 1-2 fix races between nbd setup and module removal. patch 3 fix io can't be completed in some error path. patch 4 fix io hung when disconnecting failed. patch 5 fix sysfs warning about duplicate creation. patch 6 use pr_err to output error message. Previous versions: v1: https://patchwork.kernel.org/project/linux-block/cover/20220426130746.885140-1-yukuai3@xxxxxxxxxx/ Yu Kuai (5): nbd: call genl_unregister_family() first in nbd_cleanup() nbd: fix race between nbd_alloc_config() and module removal nbd: don't clear 'NBD_CMD_INFLIGHT' flag if request is not completed nbd: fix io hung while disconnecting device nbd: use pr_err to output error message Zhang Wensheng (1): nbd: fix possible overflow on 'first_minor' in nbd_dev_add() drivers/block/nbd.c | 110 +++++++++++++++++++++++++++----------------- 1 file changed, 68 insertions(+), 42 deletions(-) -- 2.31.1