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Graham Dumpleton
grahamd at dscpl.com.au
Tue Apr 26 20:24:25 EDT 2005
It may not be your platform, but a problem in the C code part of PSP modules after all. On Mac OSX, after making the Python changes you give, it doesn't crash, but do get this warning in the logs. [Wed Apr 27 10:21:14 2005] [notice] Apache/2.0.51 (Unix) mod_python/3.1.3 Python/2.3 configured -- resuming normal operations *** malloc[595]: Deallocation of a pointer not malloced: 0x528050; This could be a double free(), or free() called with the middle of an allocated block; Try setting environment variable MallocHelp to see tools to help debug *** malloc[595]: error for object 0x5102c0: Double free [Wed Apr 27 10:21:16 2005] [error] [client 127.0.0.1] PythonHandler _handler: Traceback (most recent call last): [Wed Apr 27 10:21:16 2005] [error] [client 127.0.0.1] PythonHandler _handler: File "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/site-packages/mod_python/apache.py", line 308, in HandlerDispatch\n result = object(req) [Wed Apr 27 10:21:16 2005] [error] [client 127.0.0.1] PythonHandler _handler: File "/Users/grahamd/Sites/psp_crash/_handler.py", line 6, in handler\n content_file.run() [Wed Apr 27 10:21:16 2005] [error] [client 127.0.0.1] PythonHandler _handler: File "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/site-packages/mod_python/psp.py", line 190, in run\n if "session" in code.co_names: [Wed Apr 27 10:21:16 2005] [error] [client 127.0.0.1] PythonHandler _handler: AttributeError: 'str' object has no attribute 'co_names' I haven't looked at the Python traceback bit yet, but the fact that malloc is complaining suggests that some sort of memory manipulation is wrong. Graham dharana wrote .. > There where more typos. I think I've fixed them. I am now trying to > reproduce it in another machine. I'm starting to believe it must a > problem with my server setup what is causing the segfaults. > > -------- Original Message -------- > Subject: Re: [mod_python] psp.PSP(req, string='hello world') causes segfault > Date: Wed, 27 Apr 2005 00:49:08 +0200 > From: dharana <dharana at dharana.net> > To: dharana <dharana at dharana.net> > CC: Graham Dumpleton <grahamd at dscpl.com.au>, mod_python list > <mod_python at modpython.org>, python-dev at httpd.apache.org > References: <426EB09B.60804 at dharana.net> > <cd668e4f1acb033939973727c751beb6 at dscpl.com.au> > <426EB7C7.4030307 at dharana.net> > <9f4387af79e092bc1b49d90c29633edc at dscpl.com.au> > <426EC2D1.7080401 at dharana.net> > > There where 3 typos in psp.py. I could only fix them by temporarily > commenting out the _psp.parsestring call. I leave to you the C side :) > > I've included the patch file with the typos fixed. Hope it helps. I'm > also forwarding to python-dev because I believe I've crossed the line again. > > ----------------------------------------------------------------------- > --- /usr/src/mod_python-3.1.4/lib/python/mod_python/psp.py Sat Jan > 29 22:25:29 2005 > +++ /usr/local/hosting/lib/python2.4/site-packages/mod_python/psp.py > Wed Apr 27 00:43:06 2005 > @@ -111,12 +111,12 @@ > self.load_from_file() > else: > > - cached = strcache.get(string) > + cached = mem_scache.get(string) > if cached: > self.code = cached > else: > self.code = _psp.parsestring(string) > - strcache.store(string) > + mem_scache.store(string, self.code) > > def cache_get(self, filename, mtime): > > @@ -358,8 +358,8 @@ > > def get(self, key): > if self.cache.has_key(key): > - hist, val = self.cache[key] > - self.cache[key] = (hits+1, code) > + hits, val = self.cache[key] > + self.cache[key] = (hits+1, val) > return val > else: > return None > ----------------------------------------------------------------------- > > -- > dharana
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