From: Alejandro Lucero <alejandro.lucero@netronome.com>
Date: Wed, 8 Nov 2017 14:36:32 +0000 (+0000)
Subject: net/nfp: fix null pointer check
X-Git-Tag: spdx-start~859
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=fee720e9292529c08f6a80ed05bd47d559812916;p=dpdk.git

net/nfp: fix null pointer check

First, the received pointer was not checked before. Then the pointer
from malloc was not the one used in the existing check.

Coverity issue: 195027
Fixes: ad60bca34899 ("net/nfp: read PF port MAC addr using NSP")

Signed-off-by: Alejandro Lucero <alejandro.lucero@netronome.com>
---

diff --git a/drivers/net/nfp/nfp_nspu.c b/drivers/net/nfp/nfp_nspu.c
index 39d14e6acd..0b415fc4ab 100644
--- a/drivers/net/nfp/nfp_nspu.c
+++ b/drivers/net/nfp/nfp_nspu.c
@@ -618,10 +618,14 @@ nfp_nsp_eth_read_table(nspu_desc_t *desc, union eth_table_entry **table)
 {
 	int ret;
 
+	if (!table)
+		return -EINVAL;
+
 	RTE_LOG(INFO, PMD, "Reading hw ethernet table...\n");
+
 	/* port 0 allocates the eth table and read it using NSPU */
 	*table = malloc(NSP_ETH_TABLE_SIZE);
-	if (!table)
+	if (!*table)
 		return -ENOMEM;
 
 	ret = nspu_command(desc, NSP_CMD_READ_ETH_TABLE, 1, 0, *table,