diff --git a/package/gcc/gcc.mk b/package/gcc/gcc.mk
index 25cb4ce8e2..1ecbf7e9b4 100644
--- a/package/gcc/gcc.mk
+++ b/package/gcc/gcc.mk
@@ -154,6 +154,14 @@ ifeq ($(BR2_mips)$(BR2_mipsel):$(BR2_TOOLCHAIN_GCC_AT_LEAST_12),y:y)
 HOST_GCC_COMMON_CONF_OPTS += --disable-libsanitizer
 endif
 
+# libsanitizer is broken for Thumb1, sanitizer_linux.cc contains unconditional
+# "ldr ip, [sp], #8", which causes:
+# ....s: Assembler messages:
+# ....s:4190: Error: lo register required -- `ldr ip,[sp],#8'
+ifeq ($(BR2_ARM_INSTRUCTIONS_THUMB),y)
+HOST_GCC_COMMON_CONF_OPTS += --disable-libsanitizer
+endif
+
 # The logic in libbacktrace/configure.ac to detect if __sync builtins
 # are available assumes they are as soon as target_subdir is not
 # empty, i.e when cross-compiling. However, some platforms do not have