From 566b1d348897a34016653d6de040688a2c0a136c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= <thomas@t-8ch.de>
Date: Thu, 1 Feb 2024 20:09:41 +0100
Subject: [PATCH] lib/cpuset: exit early from cpulist_parse
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If `a` exceeds `max`, any increment of `a` will also `exceed` max.
In this case the CPU_SET_S will never do anything all additional loops
are wasted.

Fixes #2748

Signed-off-by: Thomas Weißschuh <thomas@t-8ch.de>
---
 lib/cpuset.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/lib/cpuset.c b/lib/cpuset.c
index 643537f6d..533b8ab30 100644
--- a/lib/cpuset.c
+++ b/lib/cpuset.c
@@ -326,8 +326,12 @@ int cpulist_parse(const char *str, cpu_set_t *set, size_t setsize, int fail)
 		if (!(a <= b))
 			return 1;
 		while (a <= b) {
-			if (fail && (a >= max))
-				return 2;
+			if (a >= max) {
+				if (fail)
+					return 2;
+				else
+					break;
+			}
 			CPU_SET_S(a, setsize, set);
 			a += s;
 		}
-- 
2.33.0

