Bug 809283 - Leak found in cdrom_open in python-CDDB-1.4-9.fc17 using gcc-with-cpychecker static analyzer
Summary: Leak found in cdrom_open in python-CDDB-1.4-9.fc17 using gcc-with-cpychecker ...
Keywords:
Status: CLOSED EOL
Alias: None
Product: Fedora
Classification: Fedora
Component: python-CDDB
Version: 23
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Jeffrey C. Ollie
QA Contact: Fedora Extras Quality Assurance
URL: http://fedorapeople.org/~dmalcolm/gcc...
Whiteboard:
Depends On:
Blocks: cpychecker
TreeView+ depends on / blocked
 
Reported: 2012-04-03 00:14 UTC by Dave Malcolm
Modified: 2016-12-20 12:12 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-12-20 12:12:14 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Dave Malcolm 2012-04-03 00:14:16 UTC
Description of problem:
I've been writing an experimental static analysis tool to detect bugs commonly occurring within C Python extension modules:
  https://fedorahosted.org/gcc-python-plugin/
  http://gcc-python-plugin.readthedocs.org/en/latest/cpychecker.html
  http://fedoraproject.org/wiki/Features/StaticAnalysisOfPythonRefcounts

I ran the latest version of the tool (in git master; post 0.9) on
python-CDDB-1.4-9.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):
http://fedorapeople.org/~dmalcolm/gcc-python-plugin/2012-04-02/python-CDDB-1.4-9.fc17/

I've manually reviewed the issues reported by the tool.

Within the category "Segfaults within error-handling paths" the 1 issue reported is likely to be inconsequential (out-of-memory on initial import).

Within the category "Possible reference leaks" the 1 issue reported appears to be a genuine leak of the cdrom_file_object, in that Py_BuildValue("O") adds a new reference: you should use code "N" instead, so that it steals the reference you're passing in.

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):
python-CDDB-1.4-9.fc17
gcc-python-plugin post-0.9 git d578ee0e46d93647d0f94502784f890c38139d60 running the checker in an *f16* chroot

Comment 1 Fedora End Of Life 2013-04-03 15:11:52 UTC
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:
https://fedoraproject.org/wiki/BugZappers/HouseKeeping/Fedora19

Comment 2 Jan Kurik 2015-07-15 15:10:28 UTC
This bug appears to have been reported against 'rawhide' during the Fedora 23 development cycle.
Changing version to '23'.

(As we did not run this process for some time, it could affect also pre-Fedora 23 development
cycle bugs. We are very sorry. It will help us with cleanup during Fedora 23 End Of Life. Thank you.)

More information and reason for this action is here:
https://fedoraproject.org/wiki/BugZappers/HouseKeeping/Fedora23

Comment 3 Fedora End Of Life 2016-11-24 10:38:21 UTC
This message is a reminder that Fedora 23 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 23. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
this bug will be closed as EOL if it remains open with a Fedora  'version'
of '23'.

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Comment 4 Fedora End Of Life 2016-12-20 12:12:14 UTC
Fedora 23 changed to end-of-life (EOL) status on 2016-12-20. Fedora 23 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

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