why Interrupt 1023 (Spurious interrupt) happens when i set pagetable attribute on exynos5250?

Hi, experts.

I'm developing pagetable on exynos5250 and exynos5433.

But i have very strange problem....

when i mapping secure-memory-area as section with attributes that is

               S = 1, TEX= 001, C =1, B = 1      =>  Outer and Inner Write-Back, Write-Allocate, Normal memory type.

               or

               S = 1, TEX= 000, C =1, B = 1       =>  Outer and Inner Write-Back, no Write-Allocate, Normal memory type,

it occurs Spurious interrupt (1023).. and i'cant process anymore.

But when i set that area with attributes that is

               S = 1, TEX= 000, C =1, B = 0        ==>    Outer and Inner Write-Through, no Write-Allocate, Normal memory type.

it works well..

However, when i try to map secure-memory-area with attributes which happen Interrupt on exynos5250, it work very well at exynos5433.

I don't know why this happens, and secure-memory-area isn't shared with Non-Secure.

also i map secure-memory-area as Section.

the memory address where interrupt happens when i try to set Outer and Inner Write-Back, write-Allocate, Normal memory type are

0xBF000000 ~ 0xC0000000. ( will be used in secure mode - DRAM ) and

0x02000000 ~ 0x02100000 (IRAM).

Could share your experience and knowledge for this beginner please?

Thanks.