From: Karel Zak <kzak@redhat.com>
Date: Fri, 11 Feb 2022 12:00:05 +0000 (+0100)
Subject: lib/buffer: make sure buffer without data is zero terminated [asan]
X-Git-Tag: v2.38-rc2~32
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=43485143623b46f54ed3cac13f159566d32c3675;p=thirdparty%2Futil-linux.git

lib/buffer: make sure buffer without data is zero terminated [asan]

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

diff --git a/lib/buffer.c b/lib/buffer.c
index 4cd9fcf65c..d1d608ff58 100644
--- a/lib/buffer.c
+++ b/lib/buffer.c
@@ -122,6 +122,8 @@ int ul_buffer_alloc_data(struct ul_buffer *buf, size_t sz)
 	buf->end = buf->begin + len;
 	buf->sz = sz;
 
+	memset(buf->end, '\0', sz - len);
+
 	return 0;
 }