weird IDT issue

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hey! i experience a weird IDT issue on kernels 2.4.x. what i want to do is
finding the address of a certain IDT gate but when i try to read memory
from ring0 at that location it segfaults. the code is in assembler.

.bss
idtr:
.double
.text

get_gate:
        movl $0x80, %eax
        sidt idtr
        movl idtr+2, %ebx
        leal (%ebx, %eax, 8), %ebx
        movw (%ebx), %cx <- segfault

i cannot find out why is this happening.. i would apreciate any help that
i can get.

- halfdead

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