From: Karel Zak <kzak@redhat.com>
Date: Mon, 9 Aug 2021 09:07:17 +0000 (+0200)
Subject: lib/buffer: fix buffer reset
X-Git-Tag: v2.38-rc1~313
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=68463f5af1fcee0622e545f2bab9c6101f84a276;p=thirdparty%2Futil-linux.git

lib/buffer: fix buffer reset

Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/lib/buffer.c b/lib/buffer.c
index b63b3684a9..4cd9fcf65c 100644
--- a/lib/buffer.c
+++ b/lib/buffer.c
@@ -12,7 +12,9 @@ void ul_buffer_reset_data(struct ul_buffer *buf)
 	if (buf->begin)
 		buf->begin[0] = '\0';
 	buf->end = buf->begin;
-	memset(buf->ptrs, 0, buf->nptrs * sizeof(char *));
+
+	if (buf->ptrs && buf->nptrs)
+		memset(buf->ptrs, 0, buf->nptrs * sizeof(char *));
 }
 
 void ul_buffer_free_data(struct ul_buffer *buf)