--- libmalloc/libmalloc-646.0.13/tests/memory_pressure.c
+++ libmalloc/libmalloc-374.40.6/tests/memory_pressure.c
@@ -23,7 +23,6 @@
 	for (int t=0; t<100; t++) {
 		for (int i=0; i<cnt; i++) {
 			struct entry *p = calloc(1, sz);
-			T_QUIET; T_ASSERT_NOTNULL(p, "Failed to make allocation with size %zu", sz);
 			TAILQ_INSERT_TAIL(&head, p, next);
 		}
 		int i=0;
@@ -44,7 +43,6 @@
 		T_META_ENVVAR("MallocScribble=1"),
 		T_META_ENVVAR("MallocSpaceEfficient=1"),
 		T_META_ENVVAR("MallocMaxMagazines=1"),
-		T_META_TAG_VM_NOT_PREFERRED,
 		T_META_CHECK_LEAKS(false))
 {
 	dispatch_queue_t q = dispatch_queue_create("pressure queue", 0); // serial
@@ -59,21 +57,10 @@
 }
 
 T_DECL(small_mem_pressure, "small memory pressure thread",
-		T_META_TAG_VM_NOT_PREFERRED,
-		T_META_RUN_CONCURRENTLY(true),
 #if TARGET_OS_WATCH
 		T_META_TIMEOUT(TEST_TIMEOUT),
 #endif // TARGET_OS_WATCH
-#if TARGET_OS_OSX
-		T_META_ALL_VALID_ARCHS(true), // test Rosetta
-		// darwintest multi-arch support relies on the first line of stderr
-		// being reserved for arch(1) complaining about a given slice being
-		// unsupported, so we can only put the malloc debug reporting on stderr
-		// when we don't need that
-		T_META_ENVVAR("MallocDebugReport=none"),
-#else // TARGET_OS_OSX
 		T_META_ENVVAR("MallocDebugReport=stderr"),
-#endif // TARGET_OS_OSX
 		T_META_ENVVAR("MallocScribble=1"),
 		T_META_ENVVAR("MallocSpaceEfficient=1"),
 		T_META_ENVVAR("MallocMaxMagazines=1"),
@@ -90,12 +77,6 @@
 	T_PASS("didn't crash");
 }
 
-// Disabled until rdar://83904507 is fixed
-//
-// Need to compile the test out entirely because T_META_MAYFAIL doesn't handle
-// test crashes - rdar://86164532
-#if 0
-
 T_DECL(medium_mem_pressure, "medium memory pressure thread",
 #if TARGET_OS_WATCH
 		T_META_TIMEOUT(TEST_TIMEOUT),
@@ -104,7 +85,6 @@
 		T_META_ENVVAR("MallocScribble=1"),
 		T_META_ENVVAR("MallocSpaceEfficient=1"),
 		T_META_ENVVAR("MallocMaxMagazines=1"),
-		T_META_MAYFAIL("Disabled until rdar://83904507 is fixed"),
 		T_META_CHECK_LEAKS(false))
 {
 	dispatch_queue_t q = dispatch_queue_create("pressure queue", 0); // serial
@@ -118,13 +98,10 @@
 	T_PASS("didn't crash");
 }
 
-#endif
-
 T_DECL(tiny_mem_pressure_multi, "test memory pressure in tiny on threads",
 #if TARGET_OS_WATCH
 		T_META_TIMEOUT(TEST_TIMEOUT),
 #endif // TARGET_OS_WATCH
-		T_META_TAG_VM_NOT_PREFERRED,
 		T_META_CHECK_LEAKS(false)) {
 	dispatch_group_t g = dispatch_group_create();
 	for (int i=0; i<16; i++) {
@@ -146,8 +123,6 @@
 }
 
 T_DECL(small_mem_pressure_multi, "test memory pressure in small on threads",
-		T_META_TAG_VM_NOT_PREFERRED,
-		T_META_RUN_CONCURRENTLY(true),
 #if TARGET_OS_WATCH
 		T_META_TIMEOUT(TEST_TIMEOUT),
 #endif // TARGET_OS_WATCH
@@ -175,9 +150,7 @@
 #if TARGET_OS_WATCH
 		T_META_TIMEOUT(TEST_TIMEOUT),
 #endif // TARGET_OS_WATCH
-		T_META_CHECK_LEAKS(false),
-	    T_META_TAG_VM_NOT_PREFERRED,
-	    T_META_RUN_CONCURRENTLY(true)) {
+		T_META_CHECK_LEAKS(false)) {
 	dispatch_group_t g = dispatch_group_create();
 	for (int i=0; i<30; i++) {
 		dispatch_group_async(g, dispatch_get_global_queue(0, 0), ^{