Red Hat Bugzilla – Bug 794532
Memory leak found in ganglia-3.1.7-5.fc17 using gcc-with-cpychecker static analyzer
Last modified: 2015-02-18 08:41:18 EST
Description of problem:
I've been writing an experimental static analysis tool to detect bugs commonly occurring within C Python extension modules:
I ran the latest version of the tool (in git master; post 0.9) on
ganglia-3.1.7-5.fc17.src.rpm, and it reports various errors.
You can see a list of errors here, triaged into categories (from most significant to least significant):
mod_python.c:build_params_dict:ob_refcnt of '*pyvalue' is 1 too high
appears to be a genuine memory leak: the string allocated here each time through the loop:
521 pyvalue = PyString_FromString(value);
still has a reference on it owned by the function, and this likely leaks memory if the process outlives the params_dict. It looks like there are leaks of "name" and "value" also.
There may of course be other bugs in my checker tool.
Hope this is helpful; let me know if you need help reading the logs that the tool generates - I know that it could use some improvement.
Version-Release number of selected component (if applicable):
gcc-python-plugin post-0.9 git 073d390de53ef52136bd90e5ac06f1ef833d047d running the checker in an *f16* chroot
This bug appears to have been reported against 'rawhide' during the Fedora 19 development cycle.
Changing version to '19'.
(As we did not run this process for some time, it could affect also pre-Fedora 19 development
cycle bugs. We are very sorry. It will help us with cleanup during Fedora 19 End Of Life. Thank you.)
More information and reason for this action is here:
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