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<h1>Bug reporting</h1>
<ul id="toc"></ul>
<h2><a id="security">Security Issues</a></h2>
Document security reporting & handling process Historically security issues in libvirt have been primarily triaged & fixed by the Red Hat libvirt members & Red Hat security team, who then usually notify other vendors via appropriate channels. There have been a number of times when vendors have not been properly notified ahead of announcement. It has also disadvantaged community members who have to backport fixes to releases for which there are no current libvirt stable branches. To address this, we want to make the libvirt security process entirely community focused / driven. To this end I have setup a new email address "libvirt-security@redhat.com" for end users to report bugs which have (possible) security implications. This email addr is backed by an invitation only, private archive, mailing list. The intent is for the list membership to comprise a subset of the libvirt core team, along with any vendor security team engineers who wish to participate in a responsible disclosure process for libvirt. Members of the list will be responsible for analysing the problem to determine if a security issue exists and then issue fixes for all current official stable branches & git master. I am proposing the following libvirt core team people as members of the security team / list (all cc'd): Daniel Berrange (Red Hat) Eric Blake (Red Hat) Jiri Denemar (Red Hat) Daniel Veillard (Red Hat) Jim Fehlig (SUSE) Doug Goldstein (Gentoo) Guido Günther (Debian) We don't have anyone from Ubuntu on the libvirt core team. Serge Hallyn is the most frequent submitter of patches from Ubuntu in recent history, so I'd like to invite him to join. Alternatively, Serge, feel free to suggest someone else to represent Ubuntu's interests. If any other vendors/distros have security people who are responsible for dealing with libvirt security issues, and want to join to get early disclosure of issues, they can suggest people. Existing security team members will vet / approve such requests to ensure they are genuine. Anyone on the team / list will be **required** to honour any embargo period agreed between members for non-public issues that are reported. The aim will be to have a maximum 2 week embargo period in the common case, extendable to 1 month if there is sufficient justification made. If anyone feels they are unable to follow such an embargo process for whatever reason, please decline membership of the security list/team. The patch which follows puts up some docs on the website about all of this.... Document how to report security bugs and the process that will be used for addressing them. Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2013-06-04 14:06:01 +04:00
<p>
If you think that an issue with libvirt may have security
implications, <strong>please do not</strong> publicly
Document security reporting & handling process Historically security issues in libvirt have been primarily triaged & fixed by the Red Hat libvirt members & Red Hat security team, who then usually notify other vendors via appropriate channels. There have been a number of times when vendors have not been properly notified ahead of announcement. It has also disadvantaged community members who have to backport fixes to releases for which there are no current libvirt stable branches. To address this, we want to make the libvirt security process entirely community focused / driven. To this end I have setup a new email address "libvirt-security@redhat.com" for end users to report bugs which have (possible) security implications. This email addr is backed by an invitation only, private archive, mailing list. The intent is for the list membership to comprise a subset of the libvirt core team, along with any vendor security team engineers who wish to participate in a responsible disclosure process for libvirt. Members of the list will be responsible for analysing the problem to determine if a security issue exists and then issue fixes for all current official stable branches & git master. I am proposing the following libvirt core team people as members of the security team / list (all cc'd): Daniel Berrange (Red Hat) Eric Blake (Red Hat) Jiri Denemar (Red Hat) Daniel Veillard (Red Hat) Jim Fehlig (SUSE) Doug Goldstein (Gentoo) Guido Günther (Debian) We don't have anyone from Ubuntu on the libvirt core team. Serge Hallyn is the most frequent submitter of patches from Ubuntu in recent history, so I'd like to invite him to join. Alternatively, Serge, feel free to suggest someone else to represent Ubuntu's interests. If any other vendors/distros have security people who are responsible for dealing with libvirt security issues, and want to join to get early disclosure of issues, they can suggest people. Existing security team members will vet / approve such requests to ensure they are genuine. Anyone on the team / list will be **required** to honour any embargo period agreed between members for non-public issues that are reported. The aim will be to have a maximum 2 week embargo period in the common case, extendable to 1 month if there is sufficient justification made. If anyone feels they are unable to follow such an embargo process for whatever reason, please decline membership of the security list/team. The patch which follows puts up some docs on the website about all of this.... Document how to report security bugs and the process that will be used for addressing them. Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2013-06-04 14:06:01 +04:00
report it in the bug tracker, mailing lists, or irc. Libvirt
has <a href="securityprocess.html">a dedicated process for handling (potential) security issues</a>
that should be used instead. So if your issue has security
implications, ignore the rest of this page and follow the
<a href="securityprocess.html">security process</a> instead.
</p>
<h2><a id="bugzilla">Bug Tracking</a></h2>
<p>
If you are using libvirt binaries from a Linux distribution
check below for distribution specific bug reporting policies
first.
</p>
<h2><a id="general">General libvirt bug reports</a></h2>
<p>
The <a href="http://bugzilla.redhat.com">Red Hat Bugzilla Server</a>
should be used to report bugs and request features in libvirt.
Before submitting a ticket, check the existing tickets to see if
the bug/feature is already tracked.
2010-01-08 03:40:38 +03:00
For general libvirt bug reports, from self-built releases, GIT snapshots
and any other non-distribution supported builds, enter tickets under
the <code>Virtualization Tools</code> product and the <code>libvirt</code>
component.
</p>
<p>
It's always a good idea to file bug reports, as the process of
filing the report always makes it easier to describe the
problem, and the bug number provides a quick way of referring to
the problem. However, not everybody in the community pays
attention to bugzilla, so after you file a bug, asking questions
and submitting patches on <a href="contact.html">the libvirt
mailing lists</a> will increase your bug's visibility and
encourage people to think about your problem. Don't hesitate to
ask questions on the list, as others may know of existing
solutions or be interested in collaborating with you on finding
a solution. Patches are always appreciated, and it's likely
that someone else has the same problem you do!
</p>
<p>
If you decide to write code, though, before you begin please
read the <a href="hacking.html">contributor guidelines</a>,
especially the first point: "Discuss any large changes on the
mailing list first. Post patches early and listen to feedback."
Few development experiences are more discouraging than spending
a bunch of time writing a patch only to have someone point out a
better approach on list.
</p>
<ul>
<li><a href="http://bugzilla.redhat.com/buglist.cgi?component=libvirt&amp;product=Virtualization%20Tools">View libvirt tickets</a></li>
<li><a href="http://bugzilla.redhat.com/bugzilla/enter_bug.cgi?product=Virtualization%20Tools&amp;component=libvirt">New libvirt ticket</a></li>
</ul>
<h2><a id="distribution">Linux Distribution specific bug reports</a></h2>
<ul>
<li>
If you are using binaries from <strong>Fedora</strong>, enter
tickets against the <code>Fedora</code> product and
the <code>libvirt</code> component.
<ul>
<li><a href="http://bugzilla.redhat.com/buglist.cgi?component=libvirt&amp;product=Fedora">View Fedora libvirt tickets</a></li>
<li><a href="http://bugzilla.redhat.com/bugzilla/enter_bug.cgi?product=Fedora&amp;component=libvirt">New Fedora libvirt ticket</a></li>
</ul>
</li>
<li>
<p>
If you are using binaries from <strong>Red Hat Enterprise
Linux</strong>, enter tickets against the Red Hat Enterprise
Linux product that you're using (e.g., Red Hat Enterprise
Linux 6) and the <code>libvirt</code> component. Red Hat
bugzilla has <a href="http://bugzilla.redhat.com">additional guidance</a> about getting support if
you are a Red Hat customer.
</p>
</li>
<li>
<p>
If you are using binaries from another Linux distribution
first follow their own bug reporting guidelines.
</p>
</li>
<li>
<p>
Finally, if you are a contributor to another Linux
distribution and would like to have your procedure for
filing bugs mentioned here, please mail the libvirt
development list.
</p>
</li>
</ul>
<h2><a id="quality">How to file high quality bug reports</a></h2>
<p>
To increase the likelihood of your bug report being addressed it is
important to provide as much information as possible. When filing
libvirt bugs use this checklist to see if you are providing enough
information:
</p>
<ul>
2010-01-08 03:40:38 +03:00
<li>The version number of the libvirt build, or SHA1 of the GIT
commit</li>
<li>The hardware architecture being used</li>
<li>The name of the hypervisor (Xen, QEMU, KVM)</li>
<li>The XML config of the guest domain if relevant</li>
<li>For Xen hypervisor, the domain logfiles from /var/log/xen and
/var/log/libvirt/libxl</li>
<li>For QEMU/KVM, the domain logfile from /var/log/libvirt/qemu</li>
</ul>
<p>
If the bug leads to a tool linked to libvirt crash, then the best
is to provide a backtrace along with the scenario used to get the
crash, the simplest is to run the program under gdb, reproduce the
steps leading to the crash and then issue a gdb "bt -a" command to
get the stack trace, attach it to the bug. Note that for the
data to be really useful libvirt debug information must be present
for example by installing libvirt debuginfo package on Fedora or
Red Hat Enterprise Linux (with debuginfo-install libvirt) prior
to running gdb.</p>
<p>
It may also happen that the libvirt daemon itself crashes or gets stuck,
in the first case run it (as root) under gdb, and reproduce the sequence
leading to the crash, similarly to a normal program provide the
"bt" backtrace information to where gdb will have stopped.<br/>
But if libvirtd gets stuck, for example seems to stop processing
commands, try to attach to the faulty daemon and issue a gdb command
"thread apply all bt" to show all the threads backtraces, as in:</p>
<pre> # ps -o etime,pid `pgrep libvirt`
... note the process id from the output
# gdb /usr/sbin/libvirtd
.... some information about gdb and loading debug data
(gdb) attach $the_daemon_process_id
....
(gdb) thread apply all bt
.... information to attach to the bug
(gdb)
</pre>
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