--- libmalloc/libmalloc-374.40.6/src/nanov2_malloc.c
+++ libmalloc/libmalloc-283.100.5/src/nanov2_malloc.c
@@ -596,15 +596,15 @@
 #if CONFIG_NANO_USES_HYPER_SHIFT
 	if (os_likely(nano_common_max_magazines_is_ncpu)) {
 		// Default case is max magazines == physical number of CPUs, which
-		// must be > _malloc_cpu_number() >> hyper_shift, so the modulo
+		// must be > _os_cpu_number() >> hyper_shift, so the modulo
 		// operation is not required.
-		return _malloc_cpu_number() >> hyper_shift;
+		return _os_cpu_number() >> hyper_shift;
 	}
 #else // CONFIG_NANO_USES_HYPER_SHIFT
 	if (os_likely(nano_common_max_magazines_is_ncpu)) {
 		// Default case is max magazines == logical number of CPUs, which
-		// must be > _malloc_cpu_number() so the modulo operation is not required.
-		return _malloc_cpu_number();
+		// must be > _os_cpu_number() so the modulo operation is not required.
+		return _os_cpu_number();
 	}
 #endif // CONFIG_NANO_USES_HYPER_SHIFT
 
@@ -614,7 +614,7 @@
 #endif // CONFIG_NANO_USES_HYPER_SHIFT
 
 	if (os_likely(_os_cpu_number_override == -1)) {
-		return (_malloc_cpu_number() >> shift) % nano_common_max_magazines;
+		return (_os_cpu_number() >> shift) % nano_common_max_magazines;
 	}
 	return (_os_cpu_number_override >> shift) % nano_common_max_magazines;
 }
@@ -1334,7 +1334,7 @@
 	if (kr) {
 		return kr;
 	}
-	boolean_t self_zone = mach_task_is_self(task) && (nanozonev2_t *)zone_address == nanozone;
+	boolean_t self_zone = (nanozonev2_t *)zone_address == nanozone;
 	memcpy(&zone_copy, nanozone, sizeof(zone_copy));
 	nanozone = &zone_copy;
 	nanov2_meta_index_t metablock_meta_index = nanov2_metablock_meta_index(nanozone);
@@ -1486,7 +1486,7 @@
 static boolean_t
 nanov2_check(nanozonev2_t *nanozone)
 {
-	// Does nothing
+	// Does nothing, just like Nano V1.
 	return 1;
 }
 
@@ -1722,7 +1722,7 @@
 static void
 nanov2_log(malloc_zone_t *zone, void *log_address)
 {
-	// Does nothing
+	// Does nothing, just like Nano V1.
 }
 
 static void
@@ -2204,7 +2204,8 @@
 		ptr = nanov2_slot_in_block_ptr(blockp, size_class, slot);
 	}
 
-	nanov2_free_slot_t *slotp = os_atomic_inject_dependency(ptr,
+	nanov2_free_slot_t *slotp =
+			(nanov2_free_slot_t *)os_atomic_force_dependency_on(ptr,
 			(unsigned long)old_meta_view.bits);
 	if (from_free_list) {
 		// We grabbed the item from the free list. Check the free list canary
@@ -2213,7 +2214,7 @@
 		// write to it.
 		uintptr_t guard = os_atomic_load(&slotp->double_free_guard, relaxed);
 		if ((guard ^ nanozone->slot_freelist_cookie) != (uintptr_t)ptr) {
-			malloc_zone_error(MALLOC_ABORT_ON_CORRUPTION, true,
+			malloc_zone_error(MALLOC_ABORT_ON_CORRUPTION, false,
 					"Heap corruption detected, free list is damaged at %p\n"
 					"*** Incorrect guard value: %lu\n", ptr, guard);
 			__builtin_unreachable();