nvme-loop: fix memory leak in nvme_loop_create_ctrl()

When creating loop ctrl in nvme_loop_create_ctrl(), if nvme_init_ctrl()
fails, the loop ctrl should be freed before jumping to the "out" label.

Fixes: 3a85a5de29ea ("nvme-loop: add a NVMe loopback host driver")
Signed-off-by: Wu Bo <wubo40@huawei.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

diff --git a/drivers/nvme/target/loop.c b/drivers/nvme/target/loop.c
index 74b3b15..cb30cb9 100644 (file)
--- a/drivers/nvme/target/loop.c
+++ b/drivers/nvme/target/loop.c
@@ -590,8 +590,10 @@ static struct nvme_ctrl *nvme_loop_create_ctrl(struct device *dev,
 
        ret = nvme_init_ctrl(&ctrl->ctrl, dev, &nvme_loop_ctrl_ops,
                                0 /* no quirks, we're perfect! */);
-       if (ret)
+       if (ret) {
+               kfree(ctrl);
                goto out;
+       }
 
        if (!nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_CONNECTING))
                WARN_ON_ONCE(1);