=== DF-2548 environment ===
uname -a:
DragonFly dfbsd 6.5-DEVELOPMENT DragonFly 6.5-DEVELOPMENT #0: Thu Jul  2 06:02:54 UTC 2026     root@dfbsd:/usr/obj/usr/src/sys/X86_64_GENERIC  x86_64

kern.version:
DragonFly 6.5-DEVELOPMENT #0: Thu Jul  2 06:02:54 UTC 2026

cc --version:
cc 8.3 [DragonFly] Release/2019-02-22
Copyright (C) 2018 Free Software Foundation, Inc.

id (poc user):
uid=1001(maxx) gid=1001(maxx) groups=1001(maxx)

sysctl kern.ttys OID flags (CTLTYPE_OPAQUE|CTLFLAG_RD expected):
kern.ttys: All struct ttys

vm.randomize_mmap (KASLR proxy):
0

struct tty size from sys/sys/tty.h (count fields / known ABI = 376 on this build):
(source not in CWD on guest)