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/proc/faults
A live file that reports program faults, including the exact code location that failed.
This is a /proc-style introspection file that records faults — moments when execution went wrong. Crucially it exposes the faulting program counter (PC), the address of the instruction that failed, and maps it back to a specific line of source code. That turns a crash from a mystery into a pointer at the offending line.
See also
- /procA fake filesystem that lets you read live kernel state as if it were ordinary files.
- blast radiusHow much of a system a single failure takes down with it.
- assertionA runtime check that says 'this must be true here,' and complains loudly if it isn't.