23h: kernel-consumer hunt — no direct readers of FIR data outside 529fe0 (init-only xrefs); bp on loop end silent in render => duplicated chain instantiation suspected; active RIP sampler fnsample.py working (2.4k in-module samples, MSVC stackfill dominates steady state; core leads 52e1c0/534580 on param phase); yabridge stale socket dirs break respawn — documented

scripts/fnall.py

@@ -52,27 +52,17 @@ def pt(req, pid, addr=0, data=0):
 
 
 def find_host():
-    # fastest signal: any non-reaper child of a reaper process
-    reapers = []
-    for p in glob.glob('/proc/[0-9]*'):
-        try:
-            cmd = open(f'/proc/{p}/cmdline', 'rb').read()
-            if b'reaper' in cmd and b'yabridge' not in cmd:
-                reapers.append(int(os.path.basename(p)))
-        except Exception:
-            continue
+    # proven maps-based finder (same as rendersnap.py)
     for p in glob.glob('/proc/[0-9]*'):
         pid = int(os.path.basename(p))
         try:
-            st = open(f'/proc/{pid}/stat').read().split()
-            ppid = int(st[3])
+            cmd = open(f'/proc/{pid}/cmdline', 'rb').read().replace(b'\0', b' ').decode('utf8', 'replace')
+            maps = open(f'/proc/{pid}/maps').read()
         except Exception:
             continue
-        if ppid in reapers and pid not in reapers:
+        if 'soothe2' in maps and 'reaper' not in cmd:
             return pid
     return None
-
-
 def drain_waits():
     out = []
     while True:
@@ -95,6 +85,18 @@ def main():
     t0 = time.time()
     while time.time() - t0 < 30 and not host:
         host = find_host()
+        if host is None and time.time() - t0 > 2:
+            # fallback: maps-based
+            for p in glob.glob('/proc/[0-9]*'):
+                pid = int(os.path.basename(p))
+                try:
+                    cmd = open(f'/proc/{pid}/cmdline', 'rb').read().replace(b'\0', b' ').decode('utf8', 'replace')
+                    maps = open(f'/proc/{pid}/maps').read()
+                except Exception:
+                    continue
+                if 'soothe2' in maps and 'reaper' not in cmd:
+                    host = pid
+                    break
         time.sleep(0.002)
     if not host:
         print('NO HOST')
@@ -111,8 +113,8 @@ def main():
     pt(PTRACE_INTERRUPT, host)
 
     # phase 2: pump events, seize newcomers until set stabilizes
-    stable_until = time.time() + 2.5
-    deadline = time.time() + 8.0
+    stable_until = time.time() + float(os.environ.get('FN_STAB','0.05'))
+    deadline = time.time() + 3.0
     while time.time() < deadline:
         for pid, st in drain_waits():
             pass  # they stay stopped; we hold them