-fstack-protector-all never caught any bugs and was using ~5% more CPU
diff --git a/aos/build/aos.gypi b/aos/build/aos.gypi
index 150aa65..4cd9a9d 100644
--- a/aos/build/aos.gypi
+++ b/aos/build/aos.gypi
@@ -101,8 +101,6 @@
               'cflags': [
                 '-mcpu=cortex-a8',
                 '-mfpu=neon',
-
-                '-fstack-protector-all',
               ],
             }],
             ['PLATFORM=="linux-amd64"', {