Function dump_page_fault_full 

fn dump_page_fault_full(
    stack_frame: &InterruptStackFrame,
    error_code: PageFaultErrorCode,
    fault_addr: Result<VirtAddr, VirtAddrNotValid>,
    task: &Option<Arc<Task>>,
) -> !

Full diagnostic dump for a non-recoverable page fault.

Uses serial_println! directly (lock-free UART) to avoid any deadlock with the log framework or the heap allocator.