From: Alejandro Lucero <alejandro.lucero@netronome.com>
Date: Wed, 8 Nov 2017 12:19:48 +0000 (+0000)
Subject: net/nfp: fix checking function return value
X-Git-Tag: spdx-start~861
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=f5cba91b095d54e8d7fcea57e515b5b4453b02ba;p=dpdk.git

net/nfp: fix checking function return value

The fstat function could return a value that indicates an error condition.
If this is not checked, the error condition may not be handled correctly.

Coverity issue: 195019
Fixes: f37d8a4b67b2 ("net/nfp: add NSP FW upload command")

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 3c8cdadcf2..39d14e6acd 100644
--- a/drivers/net/nfp/nfp_nspu.c
+++ b/drivers/net/nfp/nfp_nspu.c
@@ -341,7 +341,12 @@ nfp_fw_upload(nspu_desc_t *nspu_desc)
 		return -ENOENT;
 	}
 
-	fstat(fw_f, &file_stat);
+	if (fstat(fw_f, &file_stat) < 0) {
+		RTE_LOG(INFO, PMD, "Firmware file %s/%s size is unknown",
+			DEFAULT_FW_PATH, DEFAULT_FW_FILENAME);
+		close(fw_f);
+		return -ENOENT;
+	}
 
 	fsize = file_stat.st_size;
 	RTE_LOG(DEBUG, PMD, "Firmware file with size: %" PRIu64 "\n",