# DF-3094 - extendfile panics on FAT I/O error mid-extend (KKASSERT instead of error return)

Severity Low | verdict: **not_reproduced** | impact: none

## Reproduce
Sources in this directory; build with `cc -O2 -o <bin> <src> -pthread` on the guest.

See VERDICT.md for the full narrative and run.log for the decisive output.