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Subject[PATCH 4.4.y] IB/mlx5: Fix leaking stack memory to userspace
Date
From: Jason Gunthorpe <jgg@mellanox.com>

mlx5_ib_create_qp_resp was never initialized and only the first 4 bytes
were written.

Fixes: 41d902cb7c32 ("RDMA/mlx5: Fix definition of mlx5_ib_create_qp_resp")
Cc: <stable@vger.kernel.org>
Acked-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Alessio Balsini <balsini@android.com>
---
drivers/infiniband/hw/mlx5/qp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c
index 43d277a931c2..c035abfe8c55 100644
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -865,7 +865,7 @@ static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
{
struct mlx5_ib_resources *devr = &dev->devr;
struct mlx5_core_dev *mdev = dev->mdev;
- struct mlx5_ib_create_qp_resp resp;
+ struct mlx5_ib_create_qp_resp resp = {};
struct mlx5_create_qp_mbox_in *in;
struct mlx5_ib_create_qp ucmd;
int inlen = sizeof(*in);
--
2.23.0.rc1.153.gdeed80330f-goog
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