From 689d6b93301a1f3ea9ad7fb8f7dcd3a6e369df07 Mon Sep 17 00:00:00 2001
From: ptitSeb <sebastien.chev@gmail.com>
Date: Fri, 9 May 2025 13:39:15 +0200
Subject: Fixed a potential deadlock on custom memory managment (mostly for
 Box32)

---
 src/custommem.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/custommem.c b/src/custommem.c
index 5e240c1d..96511c58 100644
--- a/src/custommem.c
+++ b/src/custommem.c
@@ -1000,8 +1000,10 @@ size_t customGetUsableSize(void* p)
     mutex_lock(&mutex_blocks);
     blocklist_t* l = findBlock(addr);
     if(l) {
-        if(l->type==BTYPE_MAP)
+        if(l->type==BTYPE_MAP) {
+            mutex_unlock(&mutex_blocks);
             return 128;
+        }
         blockmark_t* sub = (void*)(addr-sizeof(blockmark_t));
 
         size_t size = SIZE_BLOCK(sub->next);
-- 
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