The ubuntu version of valgrind doesn't have "--track-origins".

tools/valgrind/valgrind_test.py

 #!/usr/bin/python
 # Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # purify_test.py
 
 '''Runs an exe through Valgrind and puts the intermediate files in a
 directory.
 '''
@@ skipping 53 matching lines @@
 
   def Setup(self):
     return self.ParseArgv()
 
   def Execute(self):
     ''' Execute the app to be tested after successful instrumentation.
     Full execution command-line provided by subclassers via proc.'''
     logging.info("starting execution...")
     # note that self._args begins with the exe to be run
     proc = ["valgrind", "--smc-check=all", "--leak-check=full",
-            "--track-origins=yes", "--num-callers=30"]
+            "--num-callers=30"]
 
     # Either generate suppressions or load them.
     if self._generate_suppressions:
       proc += ["--gen-suppressions=all"]
     else:
       proc += ["--xml=yes"]
 
     suppression_count = 0
     for suppression_file in self._suppressions:
       if os.path.exists(suppression_file):
@@ skipping 64 matching lines @@
     return retcode
 
 
 
 if __name__ == "__main__":
   valgrind = Valgrind()
   retcode = valgrind.Main()
   sys.exit(retcode)