From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Wed, 19 Mar 2025 02:21:46 +0000 (+0900)
Subject: io-util: add one more assertion for Coverity
X-Git-Tag: v258-rc1~1042^2~1
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=4b4181f4acecb7ead9814d5430bb2010a2d1290e;p=thirdparty%2Fsystemd.git

io-util: add one more assertion for Coverity

Fixes CID#1548067.
---

diff --git a/src/basic/io-util.c b/src/basic/io-util.c
index f12f6b192c9..7d7f34f2035 100644
--- a/src/basic/io-util.c
+++ b/src/basic/io-util.c
@@ -86,6 +86,7 @@ ssize_t loop_read(int fd, void *buf, size_t nbytes, bool do_poll) {
                         return n;
 
                 assert((size_t) k <= nbytes);
+                assert(k <= SSIZE_MAX - n);
 
                 p += k;
                 nbytes -= k;