From: Dan Carpenter Date: Thu, 29 Jun 2023 06:07:37 +0000 (+0300) Subject: RDMA/mlx4: Make check for invalid flags stricter X-Git-Tag: v6.6.7~2202^2~16 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d64b1ee12a168030fbb3e0aebf7bce49e9a07589;p=platform%2Fkernel%2Flinux-starfive.git RDMA/mlx4: Make check for invalid flags stricter This code is trying to ensure that only the flags specified in the list are allowed. The problem is that ucmd->rx_hash_fields_mask is a u64 and the flags are an enum which is treated as a u32 in this context. That means the test doesn't check whether the highest 32 bits are zero. Fixes: 4d02ebd9bbbd ("IB/mlx4: Fix RSS hash fields restrictions") Signed-off-by: Dan Carpenter Link: https://lore.kernel.org/r/233ed975-982d-422a-b498-410f71d8a101@moroto.mountain Signed-off-by: Leon Romanovsky --- diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c index 4566566..9d08aa9 100644 --- a/drivers/infiniband/hw/mlx4/qp.c +++ b/drivers/infiniband/hw/mlx4/qp.c @@ -565,15 +565,15 @@ static int set_qp_rss(struct mlx4_ib_dev *dev, struct mlx4_ib_rss *rss_ctx, return (-EOPNOTSUPP); } - if (ucmd->rx_hash_fields_mask & ~(MLX4_IB_RX_HASH_SRC_IPV4 | - MLX4_IB_RX_HASH_DST_IPV4 | - MLX4_IB_RX_HASH_SRC_IPV6 | - MLX4_IB_RX_HASH_DST_IPV6 | - MLX4_IB_RX_HASH_SRC_PORT_TCP | - MLX4_IB_RX_HASH_DST_PORT_TCP | - MLX4_IB_RX_HASH_SRC_PORT_UDP | - MLX4_IB_RX_HASH_DST_PORT_UDP | - MLX4_IB_RX_HASH_INNER)) { + if (ucmd->rx_hash_fields_mask & ~(u64)(MLX4_IB_RX_HASH_SRC_IPV4 | + MLX4_IB_RX_HASH_DST_IPV4 | + MLX4_IB_RX_HASH_SRC_IPV6 | + MLX4_IB_RX_HASH_DST_IPV6 | + MLX4_IB_RX_HASH_SRC_PORT_TCP | + MLX4_IB_RX_HASH_DST_PORT_TCP | + MLX4_IB_RX_HASH_SRC_PORT_UDP | + MLX4_IB_RX_HASH_DST_PORT_UDP | + MLX4_IB_RX_HASH_INNER)) { pr_debug("RX Hash fields_mask has unsupported mask (0x%llx)\n", ucmd->rx_hash_fields_mask); return (-EOPNOTSUPP);