VOID *__fastcall IovUtilGetLowerDeviceObjectWithTag(INT64 a1){
KIRQL v2;
void *v3;
v2 = KeAcquireQueuedSpinLock(0xAui64);
v3 = *(void **)(*(_QWORD *)(a1 + 312) + 48i64);
if( v3 )
ObfReferenceObjectWithTag(v3, 0x49667256u);
KeReleaseQueuedSpinLock(0xAui64, v2);
return v3;
}