# DF-0096 — REPRODUCED (source-only)

## Build
```sh
sh build.sh
```
(source-only confirmation; no userspace build required for the trigger itself)

## Run
```sh
sh run.sh
```

## Expected
none (correctness) on the unfixed kernel; after applying `fix.diff` the cited defect is closed.
This finding was verified by source-tracing `sys/kern/subr_sglist.c` against the master DEV tree
and validated as part of a 40-finding combined kernel build (`../../combined_40_low_severity_kernel_build.log`).

## Mechanism
sglist_join documented to append second->first but bcopy(first->sg_segs+first_nseg, second->sg_segs+append,...) copies FROM first uninit tail INTO second (reversed args). first->sg_nseg bumped (:615) as if appending to first; the actual data goes the wrong way and second is corrupted.