wall2 session 94: instance clears proven REQUIRED (zero-gdb run still -4'd); t104 self-exiting clearer + unwait reaches VKDEVICE again; next: detach-from-handler t104 so no gdb is ever held + t102 wait identification

1 files changed, 56 insertions, 0 deletions

diff --git a/tools/guest-diag/wall2/t104.py b/tools/guest-diag/wall2/t104.py
new file mode 100644
index 0000000..5a4c059
--- /dev/null
+++ b/tools/guest-diag/wall2/t104.py
@@ -0,0 +1,56 @@
+import gdb, time
+gr = gdb.execute
+inf = gdb.selected_inferior()
+pid = inf.pid
+base = None
+for line in open("/proc/%d/maps" % pid):
+    parts = line.split()
+    try:
+        lo, hi = [int(x,16) for x in parts[0].split('-')]
+    except Exception:
+        continue
+    if base is None and "libnvidia-eglcore" in line and int(parts[2],16) == 0:
+        base = lo
+print("BASE 0x%x PID %d" % (base or 0, pid), flush=True)
+def u64(a): return int(gdb.parse_and_eval("*(unsigned long*)0x%x" % a))
+def u32(a): return int(gdb.parse_and_eval("*(unsigned int*)0x%x" % a))
+state = {"chits":0, "cleared":0, "t0":time.time(), "last":time.time()}
+class BC(gdb.Breakpoint):
+    def __init__(self):
+        super().__init__("*0x%x" % (base + 0xB33D30), internal=False)
+        self.silent = True
+    def stop(self):
+        state["chits"] += 1
+        try:
+            obj = int(gdb.parse_and_eval("$rdi"))
+            n = int(gdb.parse_and_eval("$rsi"))
+            cnt = u32(obj + 0x22efc)
+            for i in range(0, min(cnt, 32)):
+                p = u64(obj + 0x1428 + i*8)
+                if not p:
+                    continue
+                tgt = p + n * 0x10
+                try:
+                    v16 = int(gdb.parse_and_eval("*(unsigned short*)0x%x" % (tgt + 0xe)))
+                    if v16 == 0xffff:
+                        gr("set {unsigned short}0x%x = 0" % (tgt + 0xe))
+                        gr("set {unsigned int}0x%x = 0" % tgt)
+                        gr("set {unsigned short}0x%x = 0" % (tgt + 0xc))
+                        state["cleared"] += 1
+                        state["last"] = time.time()
+                        print("CLEAR#%d obj=0x%x n=0x%x tgt=0x%x" % (state["cleared"], obj, n, tgt), flush=True)
+                except Exception:
+                    pass
+        except Exception:
+            pass
+        if state["cleared"] >= 8 or state["chits"] >= 40 or (time.time() - state["last"]) > 25.0:
+            self.enabled = False
+            print("BC-EXIT cleaned=%d chits=%d" % (state["cleared"], state["chits"]), flush=True)
+            return True
+        return False
+try:
+    BC(); print("BPS-SET", flush=True)
+    gr("continue")
+except Exception as e:
+    print("bpfail %s" % e, flush=True)
+print("T104-DONE chits=%d cleared=%d" % (state["chits"], state["cleared"]), flush=True)