# DF-0095 — REPRODUCED (source-only, requires root sysctl + unpriv attach)

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

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

## Expected
none (root-settable) on the unfixed kernel; after applying `fix.diff` the cited defect is closed.
This finding was verified by source-tracing `sys/kern/sysv_shm.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
shmmap_state allocated per-vmspace lazily sys_shmat (:284) size=shminfo.shmseg*sizeof capturing value at first-attach. Loops in shmat (:312) shmdt (:242) shmexit (:674) shmfork (:654/:658) ALL re-read LIVE shminfo.shmseg which is CTLFLAG_RW root-writable; if root grows shmseg after first attach, loops walk past the allocated array.