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Bug 1272301 - virsh client crash when pass an empty string to dump option format
Summary: virsh client crash when pass an empty string to dump option format
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: libvirt
Version: 7.2
Hardware: x86_64
OS: Linux
medium
medium
Target Milestone: rc
: ---
Assignee: Peter Krempa
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2015-10-16 02:55 UTC by Luyao Huang
Modified: 2016-11-03 18:26 UTC (History)
6 users (show)

Fixed In Version: libvirt-1.3.1-1.el7
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-11-03 18:26:16 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2016:2577 0 normal SHIPPED_LIVE Moderate: libvirt security, bug fix, and enhancement update 2016-11-03 12:07:06 UTC

Description Luyao Huang 2015-10-16 02:55:08 UTC 
Description of problem:
virsh client crash when pass an empty string to dump option format

Version-Release number of selected component (if applicable):
libvirt-1.2.17-13.el7.x86_64

How reproducible:
100%

Steps to Reproduce:
1.prepare a running guest:
# virsh list --all
 Id    Name                           State
----------------------------------------------------
 2     rhel7.0-rhel                   running

2.
# virsh dump rhel7.0-rhel r7.dump --format '' --memory-only
Segmentation fault (core dumped)

3.

Actual results:
virsh get segfault

Expected results:

output error

Additional info:
Comment 1 Peter Krempa 2015-10-16 08:30:22 UTC 
Fixed upstream:

commit 4ceaa7491e43b015bb2ea58c60aed889098e988d
Author: Peter Krempa <pkrempa>
Date:   Fri Oct 16 09:01:17 2015 +0200

    virsh: Use 'format' argument only when specified
    
    The condition checking whether --format was specified was incorrect.
    virsh crashed if the following format was used:
    
     virsh dump VM dump --format '' --memory-only
Comment 3 yafu 2016-02-26 06:06:49 UTC 
Passed with version libvirt-1.3.1-1.el7.x86_64.

Steps:
1.Prepare a running guest:
  # virsh list --all
  Id    Name                           State
 ----------------------------------------------------
  1    rhel7.2                  running

2.virsh dump rhel7.2 /tmp/rhel72.dump --format '' --memory-only
  Domain rhel7.2 dumped to /tmp/rhel72.dump

3.Check the format of dump file:
  #file /tmp/rhel72.dump
  /tmp/rhel72.dump: ELF 64-bit LSB core file x86-64, version 1 (SYSV), SVR4-style

From the above steps, we can see when pass an empty string to dump option format, dump file can be generated with the default "ELF" format correctly.
Comment 4 yafu 2016-06-02 09:24:50 UTC 
According to comment 3, move the bug to verified.
Comment 6 errata-xmlrpc 2016-11-03 18:26:16 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.

https://rhn.redhat.com/errata/RHSA-2016-2577.html
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