[libvirt] [PATCH 1/3] python: Fix memory leaks on libvirt_virDomainGetSchedulerParameters

Eric Blake eblake at redhat.com
Sat Dec 31 23:52:21 UTC 2011

On 12/31/2011 03:29 AM, ajia at redhat.com wrote:
> From: Alex Jia <ajia at redhat.com>
> Detected by valgrind. Leaks introduced in commit 62094f7 and commit c5cf6e1.

>          key = libvirt_constcharPtrWrap(params[i].field);
>          PyDict_SetItem(info, key, val);
> +        Py_DECREF(key);
> +        Py_DECREF(val);

Can PyDict_SetItem() fail?  If so, shouldn't we be recovering from that
failure by cleaning up memory and returning a proper error, rather than
blindly proceeding on?  We ought to fix all PyDict_SetItem clients in
the same way as part of a global cleanup patch in the python directory,
which will have the side effect of fixing the memory leaks in the process.

Eric Blake   eblake at redhat.com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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