From da40d40d354d08d48aee1ee9bbf8813b1aa80124 Mon Sep 17 00:00:00 2001
From: Omar Kallel <omar.kallel@pivasoftware.com>
Date: Tue, 14 Apr 2020 10:00:05 +0100
Subject: [PATCH] dmasprintf: check negatif size case

---
 libbbf_api/dmmem.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libbbf_api/dmmem.c b/libbbf_api/dmmem.c
index 721ec97c..6927d490 100644
--- a/libbbf_api/dmmem.c
+++ b/libbbf_api/dmmem.c
@@ -136,6 +136,8 @@ char **s, const char *format, ...
 	va_start(arg,format);
 	va_copy(argcopy, arg);
 	size = vsnprintf(NULL, 0, format, argcopy);
+	if (size < 0)
+		return -1;
 	va_end(argcopy);
 #ifdef WITH_MEMTRACK
 	str = (char *)__dmcalloc(file, func, line, sizeof(char), size+1);