From: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
Date: Wed, 21 Mar 2018 12:16:25 +0000 (+0100)
Subject: fuzz-unit-file: fix check if ListenNetlink is used
X-Git-Tag: v239~501^2
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F8523%2Fhead;p=thirdparty%2Fsystemd.git

fuzz-unit-file: fix check if ListenNetlink is used

A line may contain leading spaces which we should skip.
Fixes https://oss-fuzz.com/v2/issue/5546208027213824/7049.
---

diff --git a/src/fuzz/fuzz-unit-file.c b/src/fuzz/fuzz-unit-file.c
index 44c68db64dd..4865653f5bf 100644
--- a/src/fuzz/fuzz-unit-file.c
+++ b/src/fuzz/fuzz-unit-file.c
@@ -41,11 +41,14 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
 
         for (;;) {
                 _cleanup_free_ char *l = NULL;
+                const char *ll;
 
                 if (read_line(f, LINE_MAX, &l) <= 0)
                         break;
 
-                if (startswith(l, "ListenNetlink="))
+                ll = l + strspn(l, WHITESPACE);
+
+                if (startswith(ll, "ListenNetlink="))
                         /* ListenNetlink causes a false positive in msan,
                          * let's skip this for now. */
                         return 0;