[foozzie] Drop incompatible flags

This adds the option to list disallowed flags for differential
fuzzing directly in the harness. Flags that can crash in smoke
tests shoule be added there.

No-Try: true
Bug: chromium:1240812
Change-Id: I57c772bedeac0ca6ba023c6b4929515b4b0e6cca
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3103314
Auto-Submit: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76369}

tools/clusterfuzz/v8_foozzie.py

@@ -166,6 +166,15 @@ KNOWN_FAILURES = {
   'CrashTests/5694376231632896/1033966.js': 'flaky',
 }
 
+# Flags that are already crashy during smoke tests should not be used.
+DISALLOWED_FLAGS = [
+  '--gdbjit',
+]
+
+
+def filter_flags(flags):
+  return [flag for flag in flags if flag not in DISALLOWED_FLAGS]
+
 
 def infer_arch(d8):
   """Infer the V8 architecture from the build configuration next to the
@@ -216,7 +225,7 @@ class ExecutionArgumentsConfig(object):
       d8 = os.path.join(BASE_PATH, d8)
     assert os.path.exists(d8)
 
-    flags = CONFIGS[config] + get('config_extra_flags')
+    flags = CONFIGS[config] + filter_flags(get('config_extra_flags'))
 
     RunOptions = namedtuple('RunOptions', ['arch', 'config', 'd8', 'flags'])
     return RunOptions(infer_arch(d8), config, d8, flags)