[mythtv] malloc(): memory corruption -> how to proceed?

[Stuart Auchterlonie]

Michael Rice wrote:
> I get these assertions quite frequently (currently using SVN 14795).
> I've attached the last few for a sampling.
> I am assuming this error happens when the corruption is detected not
> when the bad write occurs.  That makes
> the stack traces not very useful in finding the problem.
> 
> Any hints on how to track this down?  Is there a some way to configure
> malloc to do more checking to get
> a trace closer to the real problem?
> 
> I tried compiling with mudflaps but that just seemed to hang.
> I am guessing valgrind would be too slow on the backend.
> 

valgrind is the way forward.

if you need help with valgrind, join us in IRC but the basic incantation
you will need is...

valgrind --tool=memcheck --error-limit=no --leak-check=full 
--log-file=backend-valgrind.log -v -- /usr/local/bin/mythbackend | tee 
backend.log


Stuart