== DF-2398 fixed kernel (ACHARNESS #7) ==
AGPSHIM: DF-2398 control bind offset=2x aperture -> error=22 bind_calls=0 (EINVAL, 0 expected)
AGPSHIM: DF-2398 WRAP bind offset=0xfffffffffffff000 am_size=0x1000 -> error=22 bind_calls=0 bind range=[0x0..0x0] aperture=0x4000000
AGPSHIM: DF-2398 VERDICT: wrap bind did not reach bind_page (error=22 calls=0)
(fix validated: subtractive bounds check rejects the wrap)