diff --git a/libsanitizer/configure.tgt b/libsanitizer/configure.tgt
index 38fc7001ff7..77a0e68222b 100644
--- a/libsanitizer/configure.tgt
+++ b/libsanitizer/configure.tgt
@@ -79,6 +79,11 @@ case "${target}" in
 	fi
 	;;
   loongarch64-*-linux*)
+	if test x$ac_cv_sizeof_void_p = x8; then
+		TSAN_SUPPORTED=yes
+		LSAN_SUPPORTED=yes
+		TSAN_TARGET_DEPENDENT_OBJECTS=tsan_rtl_loongarch64.lo
+	fi
 	;;
   *)
 	UNSUPPORTED=1
diff --git a/libsanitizer/tsan/Makefile.am b/libsanitizer/tsan/Makefile.am
index cb8bf2e705e..e8fca16be5f 100644
--- a/libsanitizer/tsan/Makefile.am
+++ b/libsanitizer/tsan/Makefile.am
@@ -50,7 +50,7 @@ tsan_files = \
 	tsan_vector_clock.cpp
 
 libtsan_la_SOURCES = $(tsan_files)
-EXTRA_libtsan_la_SOURCES = tsan_rtl_amd64.S tsan_rtl_aarch64.S tsan_rtl_mips64.S tsan_rtl_ppc64.S tsan_rtl_s390x.S tsan_rtl_riscv64.S
+EXTRA_libtsan_la_SOURCES = tsan_rtl_amd64.S tsan_rtl_aarch64.S tsan_rtl_loongarch64.S tsan_rtl_mips64.S tsan_rtl_ppc64.S tsan_rtl_s390x.S tsan_rtl_riscv64.S
 libtsan_la_LIBADD = $(top_builddir)/sanitizer_common/libsanitizer_common.la $(top_builddir)/interception/libinterception.la $(TSAN_TARGET_DEPENDENT_OBJECTS)
 libtsan_la_DEPENDENCIES = $(top_builddir)/sanitizer_common/libsanitizer_common.la $(top_builddir)/interception/libinterception.la $(TSAN_TARGET_DEPENDENT_OBJECTS)
 if LIBBACKTRACE_SUPPORTED
diff --git a/libsanitizer/tsan/Makefile.in b/libsanitizer/tsan/Makefile.in
index 5cc6f95a40a..5bbdf3915b8 100644
--- a/libsanitizer/tsan/Makefile.in
+++ b/libsanitizer/tsan/Makefile.in
@@ -456,7 +456,7 @@ tsan_files = \
 	tsan_vector_clock.cpp
 
 libtsan_la_SOURCES = $(tsan_files)
-EXTRA_libtsan_la_SOURCES = tsan_rtl_amd64.S tsan_rtl_aarch64.S tsan_rtl_mips64.S tsan_rtl_ppc64.S tsan_rtl_s390x.S tsan_rtl_riscv64.S
+EXTRA_libtsan_la_SOURCES = tsan_rtl_amd64.S tsan_rtl_aarch64.S tsan_rtl_loongarch64.S tsan_rtl_mips64.S tsan_rtl_ppc64.S tsan_rtl_s390x.S tsan_rtl_riscv64.S
 libtsan_la_LIBADD =  \
 	$(top_builddir)/sanitizer_common/libsanitizer_common.la \
 	$(top_builddir)/interception/libinterception.la \
@@ -614,6 +614,7 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tsan_rtl_aarch64.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tsan_rtl_access.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tsan_rtl_amd64.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tsan_rtl_loongarch64.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tsan_rtl_mips64.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tsan_rtl_mutex.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/tsan_rtl_ppc64.Plo@am__quote@