Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 5.4 22/29] nvme-loop: check for NVME_LOOP_Q_LIVE in nvme_loop_destroy_admin_queue() | Date | Mon, 7 Jun 2021 12:14:03 -0400 |
| |
From: Hannes Reinecke <hare@suse.de>
[ Upstream commit 4237de2f73a669e4f89ac0aa2b44fb1a1d9ec583 ]
We need to check the NVME_LOOP_Q_LIVE flag in nvme_loop_destroy_admin_queue() to protect against duplicate invocations eg during concurrent reset and remove calls.
Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/nvme/target/loop.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/nvme/target/loop.c b/drivers/nvme/target/loop.c index f752e9432676..f657a12bf1fe 100644 --- a/drivers/nvme/target/loop.c +++ b/drivers/nvme/target/loop.c @@ -252,7 +252,8 @@ static const struct blk_mq_ops nvme_loop_admin_mq_ops = { static void nvme_loop_destroy_admin_queue(struct nvme_loop_ctrl *ctrl) { - clear_bit(NVME_LOOP_Q_LIVE, &ctrl->queues[0].flags); + if (!test_and_clear_bit(NVME_LOOP_Q_LIVE, &ctrl->queues[0].flags)) + return; nvmet_sq_destroy(&ctrl->queues[0].nvme_sq); blk_cleanup_queue(ctrl->ctrl.admin_q); blk_cleanup_queue(ctrl->ctrl.fabrics_q); -- 2.30.2
| |