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19 <title>&os; &release; Errata</title>
21 <author><orgname>The &os; Project</orgname></author>
23 <pubdate>$FreeBSD$</pubdate>
28 <holder role="mailto:doc@FreeBSD.org">The &os; Documentation
32 <legalnotice xml:id="trademarks" role="trademarks">
40 <para>This document lists errata items for &os; &release;,
41 containing significant information discovered after the
42 release or too late in the release cycle to be otherwise
43 included in the release documentation. This information
44 includes security advisories, as well as news relating to the
45 software or documentation that could affect its operation or
46 usability. An up-to-date version of this document should
47 always be consulted before installing this version of
50 <para>This errata document for &os; &release; will be maintained
51 until the release of &os; &release.next;.</para>
55 <sect1 xml:id="intro">
56 <title>Introduction</title>
58 <para>This errata document contains <quote>late-breaking
59 news</quote> about &os; &release; Before installing this
60 version, it is important to consult this document to learn about
61 any post-release discoveries or problems that may already have
62 been found and fixed.</para>
64 <para>Any version of this errata document actually distributed
65 with the release (for example, on a CDROM distribution) will be
66 out of date by definition, but other copies are kept updated on
67 the Internet and should be consulted as the <quote>current
68 errata</quote> for this release. These other copies of the
69 errata are located at <link
70 xlink:href="https://www.FreeBSD.org/releases/" />, plus any
71 sites which keep up-to-date mirrors of this location.</para>
73 <para>Source and binary snapshots of &os; &release.branch; also
74 contain up-to-date copies of this document (as of the time of
77 <para>For a list of all &os; CERT security advisories, see <link
78 xlink:href="https://www.FreeBSD.org/security/"/>.</para>
81 <sect1 xml:id="security">
82 <title>Security Advisories</title>
87 <sect1 xml:id="errata">
88 <title>Errata Notices</title>
93 <sect1 xml:id="open-issues">
94 <title>Open Issues</title>
98 <para>&os;/&arch.i386; installed on ZFS may crash during boot
99 when the ZFS pool mount is attempted while booting an
100 unmodified <literal>GENERIC</literal> kernel.</para>
102 <para>A system tunable has been added as of revision
103 <literal>r286584</literal> to make the
104 <literal>kern.kstack_pages</literal> tunable configurable
105 without recompiling the kernel.</para>
107 <para>To mitigate system crashes with such configurations,
108 choose <literal>Escape to loader prompt</literal> in the
109 boot menu and enter the following lines from &man.loader.8;
110 prompt, after an <literal>OK</literal>:</para>
112 <screen>set kern.kstack_pages=4
115 <para>Add this line to
116 <filename>/boot/loader.conf</filename> for the change to
117 persist across reboots:</para>
119 <programlisting>kern.kstack_pages=4</programlisting>
123 <para>[2017-07-21] Due to a bug in earlier versions of
124 &man.clang.1; that is difficult to work around in the
125 upgrade process, to upgrade the system from sources via
126 buildworld to -CURRENT or &release;, it is necessary to
127 upgrade machines running 9.x to at least revision r286035,
128 or machines running 10.x to revision r286033. Source-based
129 upgrades from 10.3-RELEASE are not affected. This differs
130 from the historical situation where one could generally
131 upgrade from anywhere on earlier stable branches, so caution
132 should be exercised.</para>
136 <para>[2017-07-25] &os;/&arch.arm64; currently lacks
137 <acronym>EFI</acronym> real-time clock
138 (<acronym>RTC</acronym>) support, which may cause the system
139 to boot with the wrong time set.</para>
141 <para>As a workaround, either enable &man.ntpdate.8; or
142 include <literal>ntpd_sync_on_start="YES"</literal> in
143 &man.rc.conf.5;.</para>
147 <para>[2017-07-25] A late issue was discovered with
148 &os;/&arch.arm64; and "root on
149 <acronym>ZFS</acronym>" installations where the root
150 <acronym>ZFS</acronym> pool would fail to be located.</para>
152 <para>There currently is no workaround.</para>
156 <para>[2017-07-26] Note for those upgrading from 11.1-RC2 in
157 <application>VirtualBox</application>:</para>
159 <para>If system panics were experienced when upgrading from
160 11.1-RC1 to 11.1-RC2, and the <filename
161 role="package">emulators/virtualbox-ose-additions{,-nox11}</filename>
162 port was built locally as a resolution, the port will either
163 need to be rebuilt when upgrading from 11.1-RC2 to
164 11.1-RELEASE, or reinstall the package from the pkg(8)
165 mirrors using either:</para>
167 <screen> &prompt.root; <userinput>pkg install -f virtualbox-ose-additions</userinput></screen>
171 <screen> &prompt.root; <userinput>pkg install -f virtualbox-ose-additions-nox11</userinput></screen>
173 <para>To ensure the system does not panic after rebooting into
174 the updated kernel, it is recommended to disable the
175 <literal>vboxguest</literal> service in &man.rc.conf.5;
176 prior to rebooting the system if possible, or use
177 &man.pkg.8; to forcefully reinstall the package.</para>
179 <para>Systems being upgraded from 11.1-RC1 and earlier and
180 11.1-RC3 to 11.1-RELEASE should be unaffected.</para>
184 <para>[2017-07-27] The release notes erroneously state
185 revision <literal>r315330</literal> was sponsored by Rubicon
186 Communications, LLC (Netgate), when in fact this work was
187 done by Hiroki Mori independently.</para>
191 <para>[2017-08-09] The release notes stated the
192 &man.ruptime.1;, &man.rwho.1;, and &man.rwhod.8; utilities
193 have been marked "deprecated", however this change
194 was reversed in 12.0-CURRENT.</para>
196 <para>The other utilities mentioned in the entry in the
197 release notes, however, are unchanged.</para>
201 <para>[2017-11-06] An issue with &os; virtual machines with
202 <application>vagrant</application> was discovered that
203 affects the <application>VirtualBox</application> where the
204 virtual machine will not start on the initial boot invoked
205 with <literal>vagrant up</literal>.</para>
207 <para>The issue is due to the virtual machine
208 <acronym>MAC</acronym> being unset, as &os; does not provide
209 a default <filename>Vagrantfile</filename>.</para>
211 <para>It has been observed, however, that a subsequent
212 invocation of <literal>vagrant up</literal> will allow the
213 virtual machine to successfully boot, allowing access via
214 <literal>vagrant ssh</literal>.</para>
219 <sect1 xml:id="late-news">
220 <title>Late-Breaking News</title>
222 <para>No news.</para>