1 files changed, 37 insertions, 0 deletions
diff --git a/results/scraper/box64/60 b/results/scraper/box64/60
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@@ -0,0 +1,37 @@
+Two potential deadlock errors due to the unreleased lock &mutex_mmap
+Dear developers:
+             Thank you for your checking. Similarly, in the function AllocDynarecMap, the lock &mutex_mmap also may not be released.  The fix is to insert pthread_mutex_unlock(&mutex_mmap); before returning.
+
+https://github.com/ptitSeb/box64/blob/f000951fc970708bfa0dd5d357a334b8cfc41eb0/src/custommem.c#L436
+
+
+
+```
+uintptr_t AllocDynarecMap(dynablock_t* db, size_t size)
+{
+    if(!size)
+        return 0;
+    if(size>MMAPSIZE-2*sizeof(blockmark_t)) {
+        #ifndef USE_MMAP
+        pthread_mutex_lock(&mutex_mmap);  // here
+        void *p = NULL;
+        if(posix_memalign(&p, box64_pagesize, size)) {
+            dynarec_log(LOG_INFO, "Cannot create dynamic map of %zu bytes\n", size);
+            return 0;   // return without releasing
+        }
+        mprotect(p, size, PROT_READ | PROT_WRITE | PROT_EXEC);
+        #else
+        void* p = mmap(NULL, size, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_ANONYMOUS|MAP_PRIVATE, -1, 0);
+        if(p==(void*)-1) {
+            dynarec_log(LOG_INFO, "Cannot create dynamic map of %zu bytes\n", size);
+            return 0;  // return without releasing
+        }
+        #endif
+        ...;
+
+    return ret;
+}
+```
+
+
+Best,