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<?xml version="1.0" encoding="iso-8859-1"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /><title>FreeBSD 11.0-RELEASE Errata</title><link rel="stylesheet" type="text/css" href="docbook.css" /><link rev="made" href="mailto:doc@FreeBSD.org" /><meta name="generator" content="DocBook XSL Stylesheets V1.78.1" /><meta name="description" content="This document lists errata items for FreeBSD 11.0-RELEASE, containing significant information discovered after the release or too late in the release cycle to be otherwise included in the release documentation. This information includes security advisories, as well as news relating to the software or documentation that could affect its operation or usability. An up-to-date version of this document should always be consulted before installing this version of FreeBSD. This errata document for FreeBSD 11.0-RELEASE will be maintained until the release of FreeBSD 11.1-RELEASE." /><script xmlns="" type="text/javascript" src="/layout/js/google.js"></script></head><body><div class="article"><div xmlns="" class="titlepage"><div><div><h1 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="idp57656440"></a>FreeBSD 11.0-RELEASE Errata </h1></div><div><div xmlns="http://www.w3.org/1999/xhtml" class="author"><h3 class="author"><span class="orgname">The FreeBSD Project</span></h3></div></div><div><p xmlns="http://www.w3.org/1999/xhtml" class="copyright">Copyright © 2016 The FreeBSD Documentation Project</p></div><div><div xmlns="http://www.w3.org/1999/xhtml" class="legalnotice"><a id="trademarks"></a><p xmlns="http://www.w3.org/TR/xhtml1/transitional">FreeBSD is a registered trademark of
the FreeBSD Foundation. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Intel, Celeron, Centrino, Core, EtherExpress, i386,
i486, Itanium, Pentium, and Xeon are trademarks or registered
trademarks of Intel Corporation or its subsidiaries in the United
States and other countries. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">SPARC, SPARC64, and
UltraSPARC are trademarks of SPARC International, Inc in the United
States and other countries. SPARC International, Inc owns all of the
SPARC trademarks and under licensing agreements allows the proper use
of these trademarks by its members. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Many of the designations used by
manufacturers and sellers to distinguish their products are claimed
as trademarks. Where those designations appear in this document,
and the FreeBSD Project was aware of the trademark claim, the
designations have been followed by the <span xmlns="http://www.w3.org/1999/xhtml" class="quote">&#8220;<span class="quote">&#8482;</span>&#8221;</span> or the
<span xmlns="http://www.w3.org/1999/xhtml" class="quote">&#8220;<span class="quote">®</span>&#8221;</span> symbol. </p></div></div><div>Last modified on 2016-10-10 15:49:49Z by gjb.</div><div><div xmlns="http://www.w3.org/1999/xhtml" class="abstract"><div class="abstract-title">Abstract</div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">This document lists errata items for FreeBSD 11.0-RELEASE,
containing significant information discovered after the release
or too late in the release cycle to be otherwise included in the
release documentation.
This information includes security advisories, as well as news
relating to the software or documentation that could affect its
operation or usability. An up-to-date version of this document
should always be consulted before installing this version of
FreeBSD. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">This errata document for FreeBSD 11.0-RELEASE
will be maintained until the release of FreeBSD 11.1-RELEASE. </p></div></div></div><hr /></div><div class="toc"><div class="toc-title">Table of Contents</div><dl class="toc"><dt><span class="sect1"><a href="#intro">1. Introduction</a></span></dt><dt><span class="sect1"><a href="#security">2. Security Advisories</a></span></dt><dt><span class="sect1"><a href="#errata">3. Errata Notices</a></span></dt><dt><span class="sect1"><a href="#open-issues">4. Open Issues</a></span></dt><dt><span class="sect1"><a href="#late-news">5. Late-Breaking News</a></span></dt></dl></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="intro"></a>1. Introduction</h2></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">This errata document contains <span xmlns="http://www.w3.org/1999/xhtml" class="quote">&#8220;<span class="quote">late-breaking news</span>&#8221;</span>
about FreeBSD 11.0-RELEASE
Before installing this version, it is important to consult this
document to learn about any post-release discoveries or problems
that may already have been found and fixed. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Any version of this errata document actually distributed
with the release (for example, on a CDROM distribution) will be
out of date by definition, but other copies are kept updated on
the Internet and should be consulted as the <span xmlns="http://www.w3.org/1999/xhtml" class="quote">&#8220;<span class="quote">current
errata</span>&#8221;</span> for this release. These other copies of the
errata are located at
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="https://www.FreeBSD.org/releases/" target="_top">https://www.FreeBSD.org/releases/</a>,
plus any sites
which keep up-to-date mirrors of this location. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Source and binary snapshots of FreeBSD 11.0-STABLE also
contain up-to-date copies of this document (as of the time of
the snapshot). </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">For a list of all FreeBSD CERT security advisories, see
<a xmlns="http://www.w3.org/1999/xhtml" class="link" href="https://www.FreeBSD.org/security/" target="_top">https://www.FreeBSD.org/security/</a>. </p></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="security"></a>2. Security Advisories</h2></div></div></div><div class="informaltable"><table width="100%" border="0"><colgroup><col width="40%" /><col width="30%" /><col width="30%" /></colgroup><thead><tr><th>Advisory</th><th>Date</th><th>Topic</th></tr></thead><tbody><tr><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">No advisories. </p></td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></td></tr></tbody></table></div></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="errata"></a>3. Errata Notices</h2></div></div></div><div class="informaltable"><table width="100%" border="0"><colgroup><col width="40%" /><col width="30%" /><col width="30%" /></colgroup><thead><tr><th>Errata</th><th>Date</th><th>Topic</th></tr></thead><tbody><tr><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">No errata notices. </p></td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></td><td><p xmlns="http://www.w3.org/TR/xhtml1/transitional">  </p></td></tr></tbody></table></div></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="open-issues"></a>4. Open Issues</h2></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p xmlns="http://www.w3.org/TR/xhtml1/transitional">An issue was discovered with Amazon® EC2&#8482;
images which would cause the virtual machine to hang during
boot when upgrading from previous FreeBSD versions. New
EC2&#8482; installations are not affected, but exisiting
installations running earlier releases are advised to wait
until the issue is resolved in an Errata Notice before
upgrading. An Errata Notice to address this is planned
following the release. </p></li><li class="listitem"><p xmlns="http://www.w3.org/TR/xhtml1/transitional">FreeBSD/i386 installed on ZFS may crash during boot
when the ZFS pool mount is attempted while booting an
unmodified <code xmlns="http://www.w3.org/1999/xhtml" class="literal">GENERIC</code> kernel. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">A system tunable has been added as of revision
<code xmlns="http://www.w3.org/1999/xhtml" class="literal">r286584</code> to make the
<code xmlns="http://www.w3.org/1999/xhtml" class="literal">kern.kstack_pages</code> tunable configurable
without recompiling the kernel. </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">To mitigate system crashes with such configurations,
chose <code xmlns="http://www.w3.org/1999/xhtml" class="literal">Escape to loader prompt</code> in the boot
menu and enter the following lines from <a xmlns="http://www.w3.org/1999/xhtml" class="citerefentry" href="http://www.FreeBSD.org/cgi/man.cgi?query=loader&amp;sektion=8&amp;manpath=freebsd-release-ports"><span class="citerefentry"><span class="refentrytitle">loader</span>(8)</span></a>
prompt, after an <code xmlns="http://www.w3.org/1999/xhtml" class="literal">OK</code>: </p><pre class="screen">set kern.kstack_pages=4
boot</pre><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Add this line to
<code xmlns="http://www.w3.org/1999/xhtml" class="filename">/boot/loader.conf</code> for the change to
persist across reboots: </p><pre class="programlisting">kern.kstack_pages=4</pre></li><li class="listitem"><p xmlns="http://www.w3.org/TR/xhtml1/transitional">A bug was diagnosed in interaction of the
<code xmlns="http://www.w3.org/1999/xhtml" class="literal">pmap_activate()</code> function and
<acronym xmlns="http://www.w3.org/1999/xhtml" class="acronym">TLB</acronym> shootdown <acronym xmlns="http://www.w3.org/1999/xhtml" class="acronym">IPI</acronym>
handler on amd64 systems which have <acronym xmlns="http://www.w3.org/1999/xhtml" class="acronym">PCID</acronym>
features but do not implement the <acronym xmlns="http://www.w3.org/1999/xhtml" class="acronym">INVPCID</acronym>
instruction. On such machines, such as SandyBridge&#8482;
and IvyBridge&#8482; microarchitectures, set the loader
tunable <code xmlns="http://www.w3.org/1999/xhtml" class="literal">vm.pmap.pcid_enabled=0</code> during
boot: </p><pre class="screen">set vm.pmap.pcid_enabled=0
boot</pre><p xmlns="http://www.w3.org/TR/xhtml1/transitional">Add this line to
<code xmlns="http://www.w3.org/1999/xhtml" class="filename">/boot/loader.conf</code> for the change to
persist across reboots: </p><p xmlns="http://www.w3.org/TR/xhtml1/transitional">To check if the system is affected, check
<a xmlns="http://www.w3.org/1999/xhtml" class="citerefentry" href="http://www.FreeBSD.org/cgi/man.cgi?query=dmesg&amp;sektion=8&amp;manpath=freebsd-release-ports"><span class="citerefentry"><span class="refentrytitle">dmesg</span>(8)</span></a> for <acronym xmlns="http://www.w3.org/1999/xhtml" class="acronym">PCID</acronym> listed in the
"Features2", and absence of
<acronym xmlns="http://www.w3.org/1999/xhtml" class="acronym">INVPCID</acronym> in the "Structured Extended
Features". If the <acronym xmlns="http://www.w3.org/1999/xhtml" class="acronym">PCID</acronym> feature is
not present, or <acronym xmlns="http://www.w3.org/1999/xhtml" class="acronym">INVPCID</acronym> is present,
system is not affected. </p><pre class="programlisting">vm.pmap.pcid_enabled=0</pre></li><li class="listitem"><p xmlns="http://www.w3.org/TR/xhtml1/transitional">The Release Notes errorneously states the
<code xmlns="http://www.w3.org/1999/xhtml" class="literal">WITH_SYSTEM_COMPILER</code> <a xmlns="http://www.w3.org/1999/xhtml" class="citerefentry" href="http://www.FreeBSD.org/cgi/man.cgi?query=src.conf&amp;sektion=5&amp;manpath=freebsd-release-ports"><span class="citerefentry"><span class="refentrytitle">src.conf</span>(5)</span></a>
option is enabled by default, however this was disabled
prior to the final release build. </p></li></ul></div></div><div class="sect1"><div xmlns="" class="titlepage"><div><div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="late-news"></a>5. Late-Breaking News</h2></div></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional">No news. </p></div></div><p xmlns="http://www.w3.org/TR/xhtml1/transitional" align="center"><small>This file, and other release-related documents,
can be downloaded from <a href="https://www.FreeBSD.org/snapshots/">https://www.FreeBSD.org/snapshots/</a>.</small></p><p xmlns="http://www.w3.org/TR/xhtml1/transitional" align="center"><small>For questions about FreeBSD, read the
<a href="http://www.FreeBSD.org/docs.html">documentation</a> before
contacting &lt;<a href="mailto:questions@FreeBSD.org">questions@FreeBSD.org</a>&gt;.</small></p><p xmlns="http://www.w3.org/TR/xhtml1/transitional" align="center"><small>All users of FreeBSD 11.0-STABLE should
subscribe to the &lt;<a href="mailto:stable@FreeBSD.org">stable@FreeBSD.org</a>&gt;
mailing list.</small></p><p xmlns="http://www.w3.org/TR/xhtml1/transitional" align="center"><small>For questions about this documentation,
e-mail &lt;<a href="mailto:doc@FreeBSD.org">doc@FreeBSD.org</a>&gt;.</small></p></body></html>