diff --git a/compiler-rt/lib/msan/msan_allocator.cpp b/compiler-rt/lib/msan/msan_allocator.cpp
index 0d5e85329850..051a9cbed549 100644
--- a/compiler-rt/lib/msan/msan_allocator.cpp
+++ b/compiler-rt/lib/msan/msan_allocator.cpp
@@ -108,7 +108,7 @@ struct AP64 {  // Allocator64 parameters. Deliberately using a short name.
 
 typedef SizeClassAllocator64<AP64> PrimaryAllocator;
 #elif defined(__aarch64__)
-static const uptr kMaxAllowedMallocSize = 2UL << 30;  // 2G
+static const uptr kMaxAllowedMallocSize = 8UL << 30;
 
 struct AP32 {
   static const uptr kSpaceBeg = 0;