RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.
Bug 761344 - memory leak on cmdBlkdeviotune sucessful path
Summary: memory leak on cmdBlkdeviotune sucessful path
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: 2011-12-08 06:09 UTC by Alex Jia
Modified: 2012-06-20 06:38 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 06:38:10 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 2011-12-08 06:09:11 UTC 
Description of problem:
Plug memory leak on cmdBlkdeviotune() sucessful path.

Version-Release number of selected component (if applicable):
libvirt-0.9.8-0rc2.el6.x86_64

How reproducible:
always

Steps to Reproduce:
1. valgrind -v --leak-check=full virsh blkdeviotune <domain name> <block device>

Note: for instance, you have a guest 'demo' with 'hda' disk, and your guest may be 'shut off' state, then run 'valgrind -v --leak-check=full virsh blkdeviotune demo hda'

  
Actual results:

==12759== 576 bytes in 1 blocks are definitely lost in loss record 18 of 29
==12759==    at 0x4A04A28: calloc (vg_replace_malloc.c:467)
==12759==    by 0x42134E: _vshCalloc.clone.2 (virsh.c:422)
==12759==    by 0x4217CB: cmdBlkdeviotune (virsh.c:6364)
==12759==    by 0x4136A2: vshCommandRun (virsh.c:16363)
==12759==    by 0x4253FB: main (virsh.c:17865)
==12759==
==12759== LEAK SUMMARY:
==12759==    definitely lost: 576 bytes in 1 blocks
==12759==    indirectly lost: 0 bytes in 0 blocks
==12759==      possibly lost: 0 bytes in 0 blocks
==12759==    still reachable: 126,964 bytes in 1,342 blocks
==12759==         suppressed: 0 bytes in 0 blocks


Expected results:
avoid memory leak.

Additional info:
Comment 1 Alex Jia 2011-12-08 06:12:07 UTC 
Patch for upstream:

https://www.redhat.com/archives/libvir-list/2011-December/msg00374.html
Comment 2 Alex Jia 2011-12-09 02:30:04 UTC 
Patch has been ACKed and pushed on upstream, but need a devel_ack+.

commit ecf75f83dc5f83b43d24695e1323446137b68770
Author: Alex Jia <ajia>
Date:   Thu Dec 8 14:09:56 2011 +0800

    virsh: plug memory leak on cmdBlkdeviotune() sucessful path
    
    Detected by valgrind. Leak introduced in commit e9bd9a0:
    
    * tools/virsh.c: fix memory leak on cmdBlkdeviotune.
    
    * how to reproduce?
      % valgrind -v --leak-check=full virsh blkdeviotune <domain name> <block device>
    
    * actual valgrind result:
    
    ==12759== 576 bytes in 1 blocks are definitely lost in loss record 18 of 29
    ==12759==    at 0x4A04A28: calloc (vg_replace_malloc.c:467)
    ==12759==    by 0x42134E: _vshCalloc.clone.2 (virsh.c:422)
    ==12759==    by 0x4217CB: cmdBlkdeviotune (virsh.c:6364)
    ==12759==    by 0x4136A2: vshCommandRun (virsh.c:16363)
    ==12759==    by 0x4253FB: main (virsh.c:17865)
    ==12759==
    ==12759== LEAK SUMMARY:
    ==12759==    definitely lost: 576 bytes in 1 blocks
    ==12759==    indirectly lost: 0 bytes in 0 blocks
    ==12759==      possibly lost: 0 bytes in 0 blocks
    ==12759==    still reachable: 126,964 bytes in 1,342 blocks
    ==12759==         suppressed: 0 bytes in 0 blocks
Comment 3 zhpeng 2011-12-13 09:57:46 UTC 
I can reproduce this with libvirt-0.9.8-1.el6.x86_64
Comment 5 Alex Jia 2012-01-10 03:25:19 UTC 
The issue has been fixed with libvirt-0.9.9-1.el6.x86_64 on RHEL6.2(2.6.32-220.el6.x86_64).

# virsh domblklist foo
Target     Source
------------------------------------------------
hda        /var/lib/libvirt/images/foo.img

# valgrind -v --leak-check=full virsh blkdeviotune foo hda
<snip>
==30428== LEAK SUMMARY:
==30428==    definitely lost: 0 bytes in 0 blocks
==30428==    indirectly lost: 0 bytes in 0 blocks
==30428==      possibly lost: 0 bytes in 0 blocks
</snip>
Comment 7 errata-xmlrpc 2012-06-20 06:38:10 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
Note You need to log in before you can comment on or make changes to this bug.