1 files changed, 2 insertions, 2 deletions
diff --git a/gc.c b/gc.c
index 95e13c692c..081d26adf7 100644
--- a/gc.c
+++ b/gc.c
@@ -6038,12 +6038,12 @@ objspace_malloc_increase(rb_objspace_t *objspace, void *mem, size_t new_size, si
     }
 
     if (type == MEMOP_TYPE_MALLOC) {
-	if (ruby_gc_stress && !ruby_disable_gc_stress) {
+	if (ruby_gc_stress && !ruby_disable_gc_stress && ruby_native_thread_p()) {
 	    garbage_collect_with_gvl(objspace, FALSE, TRUE, GPR_FLAG_MALLOC);
 	}
 	else {
 	  retry:
-	    if (malloc_increase > malloc_limit) {
+	    if (malloc_increase > malloc_limit && ruby_native_thread_p()) {
 		if (ruby_thread_has_gvl_p() && is_lazy_sweeping(heap_eden)) {
 		    gc_rest_sweep(objspace); /* rest_sweep can reduce malloc_increase */
 		    goto retry;