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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:
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
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.
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