diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index dffe6c2016..47a6b58cf5 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -9429,6 +9429,12 @@ static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1,
                              FUTEX_WAKE, INT_MAX, NULL, NULL, 0);
             }
 
+#ifdef TARGET_AARCH64
+            if (ts->gcs_base) {
+                target_munmap(ts->gcs_base, ts->gcs_size);
+            }
+#endif
+
             object_unparent(OBJECT(cpu));
             object_unref(OBJECT(cpu));
             /*