2.4.3-ac8 build error with CONFIG_DEBUG_KERNEL not set

I got the following with CONFIG_DEBUG_KERNEL not set: kernel/kernel.o(__ksymtab+0xc80): undefined reference to `handle_sysrq' kernel/kernel.o(__ksymtab+0xc88): undefined reference to `__handle_sysrq_nolock' kernel/kernel.o(__ksymtab+0xc90): undefined reference to `__sysrq_lock_table'

2.4.3-ac8 build error with CONFIG_DEBUG_KERNEL not set

I got the following with CONFIG_DEBUG_KERNEL not set: kernel/kernel.o(__ksymtab+0xc80): undefined reference to `handle_sysrq' kernel/kernel.o(__ksymtab+0xc88): undefined reference to `__handle_sysrq_nolock' kernel/kernel.o(__ksymtab+0xc90): undefined reference to `__sysrq_lock_table'