From: Phil Sutter <phil@nwl.cc>
Date: Mon, 21 Aug 2017 09:27:03 +0000 (+0200)
Subject: netem/maketable: Check return value of fstat()
X-Git-Tag: v4.13.0~42
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d304b05c12b3a0247b627ebc8e4477520bb4b969;p=thirdparty%2Fiproute2.git

netem/maketable: Check return value of fstat()

Otherwise info.st_size may contain garbage.

Signed-off-by: Phil Sutter <phil@nwl.cc>
---

diff --git a/netem/maketable.c b/netem/maketable.c
index 6aff927be..ad660e7d4 100644
--- a/netem/maketable.c
+++ b/netem/maketable.c
@@ -24,8 +24,8 @@ readdoubles(FILE *fp, int *number)
 	int limit;
 	int n=0, i;
 
-	fstat(fileno(fp), &info);
-	if (info.st_size > 0) {
+	if (!fstat(fileno(fp), &info) &&
+	    info.st_size > 0) {
 		limit = 2*info.st_size/sizeof(double);	/* @@ approximate */
 	} else {
 		limit = 10000;