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Debugging walkthrough: Access violation on nonsense instruction, episode 3

The Old New Thing ·The Old New Thing ·Published 2026-09-25 ·5 min read

This article discusses a case of access violations occurring across multiple unrelated programs, analyzing crash dumps to identify the underlying issue. It highlights the importance of recognizing invalid code execution in debugging.

From the article

A customer reported that their employees were randomly getting “memory write errors”.

This was their way of interpreting the error message

The instruction at “XX” referenced memory at “YY”. The memory could not be “written”.


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Discovered 2026-09-28 Source The Old New Thing Archive 2026-09 →