# DF-0071 — REPRODUCED (source-only, root-only checkpoint restore)

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

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

## Expected
none (root-only) on the unfixed kernel; after applying `fix.diff` the cited defect is closed.
This finding was verified by source-tracing `sys/kern/kern_checkpoint.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
elf_gettextvp: vpcount (int) read from untrusted ckpt file; used as kmalloc(sizeof(vn_hdr)*vpcount,...,M_WAITOK) at :563 with NO vpcount>=0 or upper-bound check. Negative vpcount → SIZE_MAX-promoted kmalloc with M_WAITOK → panic/hang.