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Bug 768860 - memory leak on libvirt_virConnectOpenAuth
Summary: memory leak on libvirt_virConnectOpenAuth
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: libvirt
Version: 6.3
Hardware: x86_64
OS: Linux
high
high
Target Milestone: rc
: ---
Assignee: Alex Jia
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-12-19 08:14 UTC by Alex Jia
Modified: 2012-06-20 06:39 UTC (History)
7 users (show)

Fixed In Version: libvirt-0.9.9-1.el6
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2012-06-20 06:39:18 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2012:0748 0 normal SHIPPED_LIVE Low: libvirt security, bug fix, and enhancement update 2012-06-19 19:31:38 UTC

Description Alex Jia 2011-12-19 08:14:39 UTC 
Description of problem:
Plug memory leak on libvirt_virConnectOpenAuth.

Version-Release number of selected component (if applicable):

# rpm -q libvirt-python
libvirt-python-0.9.8-1.el6.x86_64

How reproducible:
Always

Steps to Reproduce:
1. valgrind -v --leak-check=full virt-clone --print-xml

Note: it can hit the issue although options are incomplete.

  
Actual results:

==1801== 12 bytes in 1 blocks are definitely lost in loss record 25 of 3,270
==1801==    at 0x4A05FDE: malloc (vg_replace_malloc.c:236)
==1801==    by 0xCF1F60E: libvirt_virConnectOpenAuth (libvirt-override.c:1507)
==1801==    by 0x3AFEEDE7F3: PyEval_EvalFrameEx (ceval.c:3794)
==1801==    by 0x3AFEEDF99E: PyEval_EvalFrameEx (ceval.c:3880)
==1801==    by 0x3AFEEDF99E: PyEval_EvalFrameEx (ceval.c:3880)
==1801==    by 0x3AFEEDF99E: PyEval_EvalFrameEx (ceval.c:3880)
==1801==    by 0x3AFEEDF99E: PyEval_EvalFrameEx (ceval.c:3880)
==1801==    by 0x3AFEEE0466: PyEval_EvalCodeEx (ceval.c:3044)
==1801==    by 0x3AFEEE0541: PyEval_EvalCode (ceval.c:545)
==1801==    by 0x3AFEEFB88B: run_mod (pythonrun.c:1351)
==1801==    by 0x3AFEEFB95F: PyRun_FileExFlags (pythonrun.c:1337)
==1801==    by 0x3AFEEFCE4B: PyRun_SimpleFileExFlags (pythonrun.c:941)

Expected results:
Fix memory leak.

Additional info:
Leak introduced in commit 5ab109f.
Comment 1 Alex Jia 2011-12-19 08:18:21 UTC 
Patch for upstream:
https://www.redhat.com/archives/libvir-list/2011-December/msg00811.html
Comment 2 Alex Jia 2011-12-20 02:38:24 UTC 
In POST:

commit 78496224f7b5dc7dc05a9a3ed2f3ac600b049150
Author: Alex Jia <ajia>
Date:   Mon Dec 19 16:12:19 2011 +0800

    python: plug memory leak on libvirt_virConnectOpenAuth
    
    * Detected by valgrind. Leak introduced in commit 5ab109f.
    
    * python/libvirt-override.c: avoid memory leak on libvirt_virConnectOpenAuth.
    
    * How to reproduce?
    
      % valgrind -v --leak-check=full virt-clone --print-xml
      Note: it can hit the issue although options are incomplete.
Comment 4 Wayne Sun 2012-01-11 03:10:21 UTC 
# rpm -q libvirt libvirt-python
libvirt-0.9.9-1.el6.x86_64
libvirt-python-0.9.9-1.el6.x86_64

# valgrind -v --leak-check=full virt-clone --print-xml
......
==29537== LEAK SUMMARY:
==29537==    definitely lost: 0 bytes in 0 blocks
==29537==    indirectly lost: 0 bytes in 0 blocks
==29537==      possibly lost: 77,664 bytes in 164 blocks
==29537==    still reachable: 4,883,446 bytes in 35,434 blocks
==29537==         suppressed: 0 bytes in 0 blocks
......

so, no definitely lost now.
Comment 6 errata-xmlrpc 2012-06-20 06:39:18 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHSA-2012-0748.html
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