Compuware Driverstudio 3.2 Incl. Softice 4.3.2 -

She traced the fault. A DMA buffer overflow. Her own code, of course. It always was. She set a breakpoint on IoCompleteRequest , stepped through the interrupt handler line by line, and watched as her driver wrote three bytes past the end of a mapped memory region. The system didn’t just crash—it committed seppuku with honor.

: By pressing a "hotkey" (traditionally Ctrl+D ), the entire OS would freeze, and the SoftICE interface would appear, allowing a user to inspect memory, set breakpoints on hardware interrupts, and step through kernel code. Compuware DriverStudio 3.2 incl. SoftIce 4.3.2

Windows resumed booting. The login screen appeared. Leo logged in, heart hammering. He launched the failing test suite. As the driver executed, the screen instantly split—the Windows UI frozen mid-paint, and above it, the SoftICE window, halted exactly at his breakpoint. She traced the fault