# DF-0118 — REPRODUCED (source-only, requires kdmsg peer)

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

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

## Expected
none (memory leak) on the unfixed kernel; after applying `fix.diff` the cited defect is closed.
This finding was verified by source-tracing `sys/kern/subr_diskiocom.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
diskiodone eof path (:637-639) and disk_blk_open paths never kfree(iost/openst) on kdmsg teardown. kdmsg_state_free (kern_dmsg.c:1754-1764) has no destructor for state->any.any. Peer can repeat OPEN/READ-WITH-DELETE+abort cycles to exhaust M_DEVBUF.