net/mlx5_en: Add missing check for memory allocation failure

The patch afb736e: "net/mlx5: Ethernet resource handling files" from May 28, 2015, leads to the following static checker warning: drivers/net/ethernet/mellanox/mlx5/core/en_flow_table.c:726 mlx5e_create_main_flow_table() error: potential null dereference 'g'. (kcalloc returns null) Fixes: afb736e ("net/mlx5: Ethernet resource handling files") Reported-by: Dan Carpenter <[email protected]> Signed-off-by: Amir Vadai <[email protected]> Signed-off-by: Or Gerlitz <[email protected]> Signed-off-by: David S. Miller <[email protected]>
huntrar · Jun 4, 2015 · 5e24851 · 5e24851
1 parent 6a0d7a0
commit 5e24851
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_flow_table.c b/drivers/net/ethernet/mellanox/mlx5/core/en_flow_table.c
@@ -722,6 +722,8 @@ static int mlx5e_create_main_flow_table(struct mlx5e_priv *priv)
 	u8 *dmac;
 
 	g = kcalloc(9, sizeof(*g), GFP_KERNEL);
+	if (!g)
+		return -ENOMEM;
 
 	g[0].log_sz = 2;
 	g[0].match_criteria_enable = MLX5_MATCH_OUTER_HEADERS;