diff --git a/compiler-rt/lib/asan/scripts/asan_symbolize.py b/compiler-rt/lib/asan/scripts/asan_symbolize.py
--- a/compiler-rt/lib/asan/scripts/asan_symbolize.py
+++ b/compiler-rt/lib/asan/scripts/asan_symbolize.py
@@ -50,7 +50,7 @@
 def is_valid_arch(s):
   return s in ["i386", "x86_64", "x86_64h", "arm", "armv6", "armv7", "armv7s",
                "armv7k", "arm64", "powerpc64", "powerpc64le", "s390x", "s390",
-               "riscv64"]
+               "riscv64", "loongarch64"]
 
 def guess_arch(addr):
   # Guess which arch we're running. 10 = len('0x') + 8 hex digits.
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_common.h b/compiler-rt/lib/sanitizer_common/sanitizer_common.h
--- a/compiler-rt/lib/sanitizer_common/sanitizer_common.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_common.h
@@ -709,6 +709,7 @@
   kModuleArchARMV7S,
   kModuleArchARMV7K,
   kModuleArchARM64,
+  kModuleArchLoongArch64,
   kModuleArchRISCV64,
   kModuleArchHexagon
 };
@@ -781,6 +782,8 @@
       return "armv7k";
     case kModuleArchARM64:
       return "arm64";
+    case kModuleArchLoongArch64:
+      return "loongarch64";
     case kModuleArchRISCV64:
       return "riscv64";
     case kModuleArchHexagon:
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_symbolizer_libcdep.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_symbolizer_libcdep.cpp
--- a/compiler-rt/lib/sanitizer_common/sanitizer_symbolizer_libcdep.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_symbolizer_libcdep.cpp
@@ -256,6 +256,8 @@
     const char* const kSymbolizerArch = "--default-arch=x86_64";
 #elif defined(__i386__)
     const char* const kSymbolizerArch = "--default-arch=i386";
+#elif SANITIZER_LOONGARCH64
+    const char *const kSymbolizerArch = "--default-arch=loongarch64";
 #elif SANITIZER_RISCV64
     const char *const kSymbolizerArch = "--default-arch=riscv64";
 #elif defined(__aarch64__)