nit

Author: corona10

Include/internal/pycore_pymem.h

@@ -99,6 +99,9 @@ static inline int _PyMem_Annotate_Mmap(void *addr, size_t size, const char *name
 {
 #if defined(Py_DEBUG) && defined(HAVE_PR_SET_VMA_ANON_NAME)
    prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, (unsigned long)addr, size, name);
+   // Ignore errno from prctl
+   // See: https://bugzilla.redhat.com/show_bug.cgi?id=2302746
+   errno = 0;
    return 0;
 #else
    return 0;

Modules/_ctypes/malloc_closure.c

@@ -75,15 +75,16 @@ static void more_core(void)
     if (item == NULL)
         return;
 #else
+    size_t mem_size = count * sizeof(ITEM);
     item = (ITEM *)mmap(NULL,
-                        count * sizeof(ITEM),
+                        mem_size,
                         PROT_READ | PROT_WRITE | PROT_EXEC,
                         MAP_PRIVATE | MAP_ANONYMOUS,
                         -1,
                         0);
     if (item == (void *)MAP_FAILED)
         return;
-    _PyMem_Annotate_Mmap(item, count * sizeof(ITEM), "Python:more_core");
+    _PyMem_Annotate_Mmap(item, mem_size, "Python:more_core");
 #endif
 
 #ifdef MALLOC_CLOSURE_DEBUG