--- arch/arm/configs/express_eng_defconfig

+++ arch/arm/configs/express_eng_defconfig

@@ -530,6 +530,7 @@ CONFIG_DEBUG_SPINLOCK_SLEEP=y

CONFIG_DEBUG_INFO=y

CONFIG_DEBUG_MEMORY_INIT=y

CONFIG_DEBUG_LIST=y

+CONFIG_SCHED_TRACER=y

CONFIG_FAULT_INJECTION=y

CONFIG_FAILSLAB=y

CONFIG_FAIL_PAGE_ALLOC=y