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15 <title>&os; &release.prev; Errata </title>
17 <author><orgname>The &os; Project</orgname></author>
19 <pubdate>$FreeBSD$</pubdate>
24 <holder role="mailto:doc@FreeBSD.org">The &os; Documentation
28 <legalnotice xml:id="trademarks" role="trademarks">
36 <para>This document lists errata items for &os; &release.prev;,
37 containing significant information discovered after the
38 release or too late in the release cycle to be otherwise
39 included in the release documentation. This information
40 includes security advisories, as well as news relating to the
41 software or documentation that could affect its operation or
42 usability. An up-to-date version of this document should
43 always be consulted before installing this version of
46 <para>This errata document for &os; &release.prev; will be
47 maintained until the release of &os; &release.next;.</para>
51 <sect1 xml:id="intro">
52 <title>Introduction</title>
54 <para>This errata document contains <quote>late-breaking
55 news</quote> about &os; &release.prev; Before installing this
56 version, it is important to consult this document to learn about
57 any post-release discoveries or problems that may already have
58 been found and fixed.</para>
60 <para>Any version of this errata document actually distributed
61 with the release (for example, on a CDROM distribution) will be
62 out of date by definition, but other copies are kept updated on
63 the Internet and should be consulted as the <quote>current
64 errata</quote> for this release. These other copies of the
65 errata are located at <link
66 xlink:href="http://www.FreeBSD.org/releases/" />, plus any
67 sites which keep up-to-date mirrors of this location.</para>
69 <para>Source and binary snapshots of &os; &release.branch; also
70 contain up-to-date copies of this document (as of the time of
73 <para>For a list of all &os; CERT security advisories, see <link
74 xlink:href="http://www.FreeBSD.org/security/"/> or <link
75 xlink:href="ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/"/>.</para>
78 <sect1 xml:id="security">
79 <title>Security Advisories</title>
84 <sect1 xml:id="errata">
85 <title>Errata Notices</title>
90 <sect1 xml:id="open-issues">
91 <title>Open Issues</title>
95 <para>&os;/&arch.i386; &release.prev; running as a guest
96 operating system on <application>VirtualBox</application>
97 can have a problem with disk I/O access. It depends on some
98 specific hardware configuration and does not depend on a
99 specific version of <application>VirtualBox</application> or
100 host operating system.</para>
102 <para>It has been reported that instability may be present on
103 virtual machines running on other hypervisors, such as Xen
106 <para>It causes various errors and makes &os; quite unstable.
107 Although the cause is still unclear, disabling unmapped I/O
108 works as a workaround. To disable it, choose
109 <literal>Escape to loader prompt</literal> in the boot menu
110 and enter the following lines from &man.loader.8; prompt,
111 after an <literal>OK</literal>:</para>
113 <screen>set vfs.unmapped_buf_allowed=0
116 <para>Note that the following line has to be added to
117 <filename>/boot/loader.conf</filename> after a boot. It
118 disables unmapped I/O at every boot:</para>
120 <programlisting>vfs.unmapped_buf_allowed=0</programlisting>
124 <para>&os;/&arch.i386; &release.prev; installed on ZFS
125 may crash during boot when the ZFS pool mount is attempted
126 while booting an unmodified <literal>GENERIC</literal>
129 <para>As described in <filename>/usr/src/UPDATING</filename>
130 entry <literal>20121223</literal>, rebuilding the kernel
131 with <literal>options KSTACK_PAGES=4</literal> has been
132 observed to resolve the boot-time crash. This, however, is
133 not an ideal solution for inclusion in the
134 <literal>GENERIC</literal> kernel configuration, as
135 increasing <literal>KSTACK_PAGES</literal> implicitly
136 decreases available usermode threads in an environment that
137 is already resource-starved.</para>
139 <para>Taking into account the heavy resource requirements of
140 ZFS, in addition to the &arch.i386;-specific tuning
141 requirements for general workloads, using ZFS with the
142 &os;/&arch.i386; <literal>GENERIC</literal> kernel
143 is strongly discouraged.</para>
145 <para>If installing &os;/&arch.i386; on ZFS, it is possible to
146 configure the system after installation to increase the
147 <literal>KSTACK_PAGES</literal>.</para>
149 <para>When prompted by &man.bsdinstall.8; to perform
150 additional post-installation configuration to the system,
151 select <guibutton>[ YES ]</guibutton>.</para>
153 <para>This procedure requires the system sources available
154 locally. If the <literal>System source code</literal>
155 distribution was not selected during installation, it can
156 be obtained using <application>svnlite</application>:</para>
158 <screen>&prompt.root; mkdir -p /usr/src
159 &prompt.root; svnlite co svn://svn.freebsd.org/base/releng/10.2 /usr/src</screen>
161 <para>Build the <literal>kernel-toolchain</literal> required
162 to rebuild the kernel:</para>
164 <screen>&prompt.root; make -C /usr/src kernel-toolchain</screen>
166 <para>Next, create a kernel configuration file to increase the
167 <literal>KSTACK_PAGES</literal> option:</para>
169 <screen>&prompt.root; printf "include GENERIC\noptions KSTACK_PAGES=4\n" > <filename>/usr/src/sys/i386/conf/<replaceable>ZFS</replaceable></filename></screen>
171 <para>Then build and install the
172 <replaceable>ZFS</replaceable> kernel:</para>
174 <screen>&prompt.root; make -C /usr/src buildkernel KERNCONF=<replaceable>ZFS</replaceable>
175 &prompt.root; make -C /usr/src installkernel KERNCONF=<replaceable>ZFS</replaceable></screen>
178 <para>It is extremely important to take note that, by
179 default, &man.freebsd-update.8; will install the
180 <literal>GENERIC</literal> kernel configuration, and
181 as such, &man.freebsd-update.8; consumers are strongly
182 encouraged to avoid &os;-provided kernel binary upgrades
183 with such configurations.</para>
188 <para>Due to an incompatibility between &man.bsdconfig.8;
189 and &man.pkg.8;, packages included on the &os; dvd
190 installer will not be recognized by
191 &man.bsdconfig.8;.</para>
193 <para>To install packages from the <literal>dvd1.iso</literal>
194 installer, create the <filename
195 class="directory">/dist</filename> target directory, and
196 manually mount the <literal>dvd1.iso</literal>
197 <acronym>ISO</acronym>:</para>
199 <screen>&prompt.root; mkdir -p /dist
200 &prompt.root; mount -t cd9660 /dev/<replaceable>cd0</replaceable> /dist</screen>
203 <para>Be sure to use the correct <filename
204 class="directory">/dev</filename> device path for the
205 <literal>dvd1.iso</literal> <acronym>ISO</acronym>
209 <para>Next, set <envar>REPOS_DIR</envar> to the path of the
210 <filename class="directory">repos/</filename> directory
211 within the installer so &man.pkg.8; will use the correct
212 repository metadata.</para>
214 <para>If using &man.sh.1;:</para>
216 <screen>&prompt.root; export REPOS_DIR=/dist/packages/repos</screen>
218 <para>If using &man.csh.1;:</para>
220 <screen>&prompt.root; setenv REPOS_DIR /dist/packages/repos</screen>
223 <para>Keep in mind that <envar>REPOS_DIR</envar> will need
224 to be set again after the current shell session is
225 terminated, if continuing to use the packages provided on
226 the <literal>dvd1.iso</literal> installer.</para>
229 <para>Finally, bootstrap &man.pkg.8; from the
230 <acronym>ISO</acronym>, and install required
233 <screen>&prompt.root; pkg bootstrap
234 &prompt.root; pkg install <replaceable>xorg-server</replaceable> <replaceable>xorg</replaceable> <replaceable>gnome3</replaceable> [...]</screen>
238 <para>An issue was discovered where the &man.netstat.1;
239 <literal>-s</literal> option will cause a segmentation fault
240 on systems with <literal>IPSEC</literal> compiled into the
241 kernel. The issue was resolved in the
242 <literal>stable/10</literal> branch, and an Errata Notice is
243 planned after &release.prev; is released.</para>
247 <para>An issue was discovered that causes &man.make.1; to
248 generate noisy output when doing source-based upgrades from
249 &os; 9.3 and earlier. The issue was reported in PR 202277,
250 and after investigation and determining the issue does not
251 cause source-based upgrades to fail, a post-release Errata
252 Notice is planned.</para>
256 <para>An issue with &os; virtual machines with
257 <application>vagrant</application> was discovered that
258 affects the <application>VirtualBox</application> where the
259 virtual machine will not start on the initial boot invoked
260 with <literal>vagrant up</literal>.</para>
262 <para>The issue is due to the virtual machine
263 <acronym>MAC</acronym> being unset, as &os; does not provide
264 a default <filename>Vagrantfile</filename>.</para>
266 <para>It has been observed, however, that a subsequent
267 invocation of <literal>vagrant up</literal> will allow the
268 virtual machine to successfully boot, allowing access via
269 <literal>vagrant ssh</literal>.</para>
273 <para>[2015-08-16] An error was discovered in the release
274 notes for &os; &release.prev; regarding the
275 <literal>drm</literal> device driver. The entry for r282199
276 states the driver was updated to match the version &linux;
277 3.8.13 version, however the entry should have noted the
278 change affects device-independent code, and does not bring
279 the <literal>drm</literal> driver fully in line with the
280 stated &linux; version.</para>
285 <sect1 xml:id="late-news">
286 <title>Late-Breaking News</title>
288 <para>No news.</para>