On 03/20/2018 2:30 AM, kbuild test robot wrote: >All errors (new ones prefixed by >>): > > arch/arm/kernel/entry-common.S: Assembler messages: >>> arch/arm/kernel/entry-common.S:85: Error: invalid constant (ffffffffb6e00000) after fixup I'm sorry! We need to add the fellowing code to solve the upper error: > git diff diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S index b7d0c6c..9b728c5 100644 --- a/arch/arm/kernel/entry-common.S +++ b/arch/arm/kernel/entry-common.S @@ -82,7 +82,8 @@ ret_fast_syscall: str r0, [sp, #S_R0 + S_OFF]! @ save returned r0 disable_irq_notrace @ disable interrupts ldr r2, [tsk, #TI_ADDR_LIMIT] - cmp r2, #TASK_SIZE + ldr r1, =TASK_SIZE + cmp r2, r1 blne addr_limit_check_failed ldr r1, [tsk, #TI_FLAGS] @ re-check for syscall tracing tst r1, #_TIF_SYSCALL_WORK | _TIF_WORK_MASK