[PATCH net] net/mlx4_core: Fix access to uninitialized index
From: Tariq Toukan <hidden>
Date: 2016-05-15 07:22:23
Also in:
linux-rdma
Subsystem:
mellanox mlx4 core vpi driver, networking drivers, the rest · Maintainers:
Tariq Toukan, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
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 <redacted>
Reported-by: Dan Carpenter <redacted>
---
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