From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Fri, 25 Jul 2025 17:23:52 +0000 (+0900)
Subject: cpu-set-util: check if cpu set is already allocated
X-Git-Tag: v258-rc2~81^2~6
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d54f1e4329aa2b80107383f99253f5f3df9f1f84;p=thirdparty%2Fsystemd.git

cpu-set-util: check if cpu set is already allocated

Prompted by CID#1611789, CID#1611790, and CID#1611791.
---

diff --git a/src/shared/cpu-set-util.c b/src/shared/cpu-set-util.c
index cef23889caf..222e4b7e179 100644
--- a/src/shared/cpu-set-util.c
+++ b/src/shared/cpu-set-util.c
@@ -133,8 +133,10 @@ int cpu_set_realloc(CPUSet *c, size_t n) {
                 return -ERANGE;
 
         n = CPU_ALLOC_SIZE(n);
-        if (n <= c->allocated)
+        if (n <= c->allocated) {
+                assert(c->set || n == 0);
                 return 0;
+        }
 
         if (!GREEDY_REALLOC0(c->set, DIV_ROUND_UP(n, sizeof(cpu_set_t))))
                 return -ENOMEM;