Prevent using uninitialized or negative index when handling
steering entries.
Fixes: b12d93d63c32 ('mlx4: Add support for promiscuous mode in the new steering model.')
Signed-off-by: Tariq Toukan <tariqt@xxxxxxxxxxxx>
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
drivers/net/ethernet/mellanox/mlx4/mcg.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx4/mcg.c b/drivers/net/ethernet/mellanox/mlx4/mcg.c
index 6aa7397..f2d0920 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mcg.c
+++ b/drivers/net/ethernet/mellanox/mlx4/mcg.c
@@ -1102,7 +1102,7 @@ int mlx4_qp_attach_common(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
struct mlx4_cmd_mailbox *mailbox;
struct mlx4_mgm *mgm;
u32 members_count;
- int index, prev;
+ int index = -1, prev;
int link = 0;
int i;
int err;
@@ -1181,7 +1181,7 @@ int mlx4_qp_attach_common(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16],
goto out;
out:
- if (prot == MLX4_PROT_ETH) {
+ if (prot == MLX4_PROT_ETH && index != -1) {
/* manage the steering entry for promisc mode */
if (new_entry)
err = new_steering_entry(dev, port, steer,
--
1.8.3.1
--
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