From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Wed, 8 Aug 2018 03:40:44 +0000 (+0900)
Subject: journal: do not pass a negative value to memcpy()
X-Git-Tag: v240~846^2~7
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=57019d5f75ca4ce6e82161447ff3ed0745d8a77a;p=thirdparty%2Fsystemd.git

journal: do not pass a negative value to memcpy()

The message may contains only whitespaces.

Fixes #9795.
---

diff --git a/src/journal/journald-syslog.c b/src/journal/journald-syslog.c
index 08b4fcb1c2d..2de3bdf66f0 100644
--- a/src/journal/journald-syslog.c
+++ b/src/journal/journald-syslog.c
@@ -333,7 +333,10 @@ void server_process_syslog_message(
 
         leading_ws = strspn(buf, WHITESPACE);
 
-        if (i == raw_len)
+        if (i == 0)
+                /* The message contains only whitespaces */
+                msg = buf + raw_len;
+        else if (i == raw_len)
                 /* Nice! No need to strip anything on the end, let's optimize this a bit */
                 msg = buf + leading_ws;
         else {