diff --git a/compiler-rt/lib/hwasan/hwasan_interceptors.cpp b/compiler-rt/lib/hwasan/hwasan_interceptors.cpp
--- a/compiler-rt/lib/hwasan/hwasan_interceptors.cpp
+++ b/compiler-rt/lib/hwasan/hwasan_interceptors.cpp
@@ -211,6 +211,12 @@
   return res;
 }
 
+template <class Munmap>
+static int munmap_interceptor(Munmap real_munmap, void *addr, SIZE_T length) {
+  __hwasan::TagMemoryAligned(reinterpret_cast<uptr>(addr), length, 0);
+  return real_munmap(addr, length);
+}
+
 #    define COMMON_INTERCEPTOR_MMAP_IMPL(ctx, mmap, addr, length, prot, flags, \
                                          fd, offset)                           \
       do {                                                                     \
@@ -218,6 +224,12 @@
         return mmap_interceptor(REAL(mmap), addr, sz, prot, flags, fd, off);   \
       } while (false)
 
+#    define COMMON_INTERCEPTOR_MUNMAP_IMPL(ctx, mmap, addr, length)            \
+      do {                                                                     \
+        (void)(ctx);                                                           \
+        return munmap_interceptor(REAL(mmap), addr, sz);                       \
+      } while (false)
+
 #    include "sanitizer_common/sanitizer_common_interceptors_memintrinsics.inc"
 #    include "sanitizer_common/sanitizer_common_interceptors.inc"
 
diff --git a/compiler-rt/test/hwasan/TestCases/munmap.c b/compiler-rt/test/hwasan/TestCases/munmap.c
new file mode 100644
--- /dev/null
+++ b/compiler-rt/test/hwasan/TestCases/munmap.c
@@ -0,0 +1,30 @@
+// RUN: %clang_hwasan  %s -o %t
+// RUN: %run %t 2>&1
+
+// REQUIRES: aarch64-target-arch
+
+#include <sanitizer/hwasan_interface.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/mman.h>
+
+int main(int argc, char **argv) {
+  int size = 4096;
+  int tag = 74;
+  int val = 42;
+  void *r = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
+                 -1, 0);
+  int *p1 = __hwasan_tag_pointer(r, tag);
+  if (r == MAP_FAILED) {
+    fprintf(stderr, "Failed to mmap\n");
+    abort();
+  }
+  __hwasan_tag_memory(r, tag, size);
+  *p1 = 42;
+  munmap(r, size);
+  // Remap the same address and make sure we can access it with a tagged pointer.
+  int *p2 = (int*) mmap(r, size, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
+                 -1, 0);
+  *p2 = 42;
+  return 0;
+}
\ No newline at end of file