Comment 2 for bug 116869

Confirming, and marking private as someone could use this to DOS the codebrowse.lp.net machine.

Clicking the files listing for a single (admittedly pretty large) branch on codebrowse.launchpad.net eventually failed with a MemoryError:

INF [20070528-23:44:10.501] cherrypy.msg: HTTP: Traceback (most recent call last):
  File "/srv/codebrowse.launchpad.net/turbogears/lib/python2.4/site-packages/CherryPy-2.2.1-py2.4.egg/cherrypy/_cphttptools.py", line 105, in _run
    self.main()
  File "/srv/codebrowse.launchpad.net/turbogears/lib/python2.4/site-packages/CherryPy-2.2.1-py2.4.egg/cherrypy/_cphttptools.py", line 254, in main
    body = page_handler(*virtual_path, **self.params)
  File "/srv/codebrowse.launchpad.net/launchpad-loggerhead/loggerhead/util.py", line 344, in _f
    out = f(*a, **kw)
  File "<string>", line 3, in default
  File "/srv/codebrowse.launchpad.net/turbogears/lib/python2.4/site-packages/TurboGears-1.0.1-py2.4.egg/turbogears/controllers.py", line 334, in expose
    output = database.run_with_transaction(
  File "<string>", line 5, in run_with_transaction
  File "/srv/codebrowse.launchpad.net/turbogears/lib/python2.4/site-packages/TurboGears-1.0.1-py2.4.egg/turbogears/database.py", line 302, in so_rwt
    retval = func(*args, **kw)
  File "<string>", line 5, in _expose
  File "/srv/codebrowse.launchpad.net/turbogears/lib/python2.4/site-packages/TurboGears-1.0.1-py2.4.egg/turbogears/controllers.py", line 351, in <lambda>
    mapping, fragment, args, kw)))
  File "/srv/codebrowse.launchpad.net/turbogears/lib/python2.4/site-packages/TurboGears-1.0.1-py2.4.egg/turbogears/controllers.py", line 378, in _execute_fun
c
    output = errorhandling.try_call(func, *args, **kw)
  File "/srv/codebrowse.launchpad.net/turbogears/lib/python2.4/site-packages/TurboGears-1.0.1-py2.4.egg/turbogears/errorhandling.py", line 73, in try_call
    return func(self, *args, **kw)
  File "/srv/codebrowse.launchpad.net/launchpad-loggerhead/loggerhead/controllers/inventory_ui.py", line 92, in default
    vals = {
  File "/srv/codebrowse.launchpad.net/launchpad-loggerhead/loggerhead/util.py", line 334, in locked
    return unbound(self, *args, **kw)
  File "/srv/codebrowse.launchpad.net/launchpad-loggerhead/loggerhead/history.py", line 860, in get_filelist
    change_dict = dict([(c.revid, c) for c in self.get_changes(list(fetch_set))])
  File "/srv/codebrowse.launchpad.net/launchpad-loggerhead/loggerhead/util.py", line 334, in locked
    return unbound(self, *args, **kw)
  File "/srv/codebrowse.launchpad.net/launchpad-loggerhead/loggerhead/history.py", line 607, in get_changes
    changes = self._change_cache.get_changes(revid_list, get_diffs)
  File "/srv/codebrowse.launchpad.net/launchpad-loggerhead/loggerhead/util.py", line 334, in locked
    return unbound(self, *args, **kw)
  File "/srv/codebrowse.launchpad.net/launchpad-loggerhead/loggerhead/changecache.py", line 107, in get_changes
    changes = self.history.get_changes_uncached(fetch_list, get_diffs)
  File "/srv/codebrowse.launchpad.net/launchpad-loggerhead/loggerhead/util.py", line 334, in locked
    return unbound(self, *args, **kw)
  File "/srv/codebrowse.launchpad.net/launchpad-loggerhead/loggerhead/history.py", line 67, in bzrlib_read_locked
    return unbound(self, *args, **kw)
  File "/srv/codebrowse.launchpad.net/launchpad-loggerhead/loggerhead/history.py", line 698, in get_changes_uncached
    delta_list = self._get_deltas_for_revisions_with_trees(rev_list)
  File "/srv/codebrowse.launchpad.net/launchpad-loggerhead/loggerhead/history.py", line 643, in _get_deltas_for_revisions_with_trees
    trees = dict((t.get_revision_id(), t) for
  File "/srv/codebrowse.launchpad.net/launchpad-loggerhead/loggerhead/history.py", line 643, in <generator expression>
    trees = dict((t.get_revision_id(), t) for
  File "/usr/lib/python2.4/site-packages/bzrlib/repository.py", line 815, in revision_trees
    texts = self.get_inventory_weave().get_texts(revision_ids)
  File "/usr/lib/python2.4/site-packages/bzrlib/knit.py", line 805, in get_texts
    return [''.join(l) for l in self.get_line_list(version_ids)]
MemoryError: <bound method InventoryUI.default of <loggerhead.controllers.inventory_ui.InventoryUI object at 0x4513896c>>

Still don't really know what's going on.