[PATCH 5.12 018/127] nvme-loop: fix memory leak in nvme_loop_create_ctrl()

Greg Kroah-Hartman
2021-05-24T16:02:05Z

From: Wu Bo <wubo40@huawei.com>

[ Upstream commit 03504e3b54cc8118cc26c064e60a0b00c2308708 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/nvme/target/loop.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/nvme/target/loop.c b/drivers/nvme/target/loop.c
index 3e189e753bcf..14913a4588ec 100644
--- a/drivers/nvme/target/loop.c
+++ b/drivers/nvme/target/loop.c
@@ -588,8 +588,10 @@ 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);
--
2.30.2