DF-4506 fix-validation run — guest kernel #2 = amplifier + fix.diff
(DragonFly 6.5-DEVELOPMENT #2: Sun Sep 20 23:21:09 UTC 2026)

$ kldload /root/idr_race/idr_race.ko

== same amplified conditions that captured 20/20 and 9/10 unfixed ======
$ sysctl debug.idr_find_pause=3
debug.idr_find_pause: 0 -> 3
$ sysctl debug.idr_race.run=20
debug.idr_race.run: 0 -> 0
$ sysctl debug.idr_race.captures debug.idr_race.anomalies debug.idr_race.finds
debug.idr_race.captures: 0
debug.idr_race.anomalies: 0
debug.idr_race.finds: 20

== native-window stress, 3 rounds (unfixed kernel PANICKED on round 2) ==
$ for i in 1 2 3; do sysctl debug.idr_race.run=-500; done
$ sysctl debug.idr_race.captures debug.idr_race.anomalies debug.idr_race.finds
debug.idr_race.captures: 0
debug.idr_race.anomalies: 0
debug.idr_race.finds: 1598684
$ uptime
11:29PM  up 24 secs, 0 users, load averages: 0.18, 0.05, 0.02   <-- ALIVE

RESULT: fix_status=fixed
  baseline (kernel #1, amplifier only):
      amplified  -> 20/20 then 9/10 canary captures
      native     -> Fatal trap 12 in idr_find+0x48 (kernel panic)
  patched (kernel #2, amplifier + fix.diff):
      amplified  -> 0 captures, 0 anomalies (20 finds)
      native     -> 0 captures across 1,598,684 finds, no panic