From: Hannes Reinecke <hare@xxxxxxx> [ Upstream commit a6c144f3d2e230f2b3ac5ed8c51e0f0391556197 ] The queue count is increased in nvme_loop_init_io_queues(), so we need to reset it to 1 at the end of nvme_loop_destroy_io_queues(). Otherwise the function is not re-entrant safe, and crash will happen during concurrent reset and remove calls. Signed-off-by: Hannes Reinecke <hare@xxxxxxx> Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@xxxxxxx> Signed-off-by: Christoph Hellwig <hch@xxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/nvme/target/loop.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/nvme/target/loop.c b/drivers/nvme/target/loop.c index 14913a4588ec..4b2a6330feb5 100644 --- a/drivers/nvme/target/loop.c +++ b/drivers/nvme/target/loop.c @@ -297,6 +297,7 @@ static void nvme_loop_destroy_io_queues(struct nvme_loop_ctrl *ctrl) clear_bit(NVME_LOOP_Q_LIVE, &ctrl->queues[i].flags); nvmet_sq_destroy(&ctrl->queues[i].nvme_sq); } + ctrl->ctrl.queue_count = 1; } static int nvme_loop_init_io_queues(struct nvme_loop_ctrl *ctrl) -- 2.30.2
