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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66 out of date by definition, but other copies are kept updated on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 chose <literal>Escape to loader prompt</literal> in the boot
109 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>The size of the <acronym>GPT</acronym> enabled
124 <acronym>ZFS</acronym> boot blocks
125 (<filename>/boot/gptzfsboot</filename>) has increased past
126 82K. Systems upgraded from older releases may experience
127 a problem where the size of the existing
128 "freebsd-boot" partition is too small to hold the
129 new <filename>gptzfsboot</filename>.</para>
131 <para>Systems where the boot partition is immediately followed
132 by the swap partition, such as those installed via
133 &man.bsdinstall.8;, can resize the swap partition slightly
134 using the &man.gpart.8; <literal>resize</literal> command,
135 so space can be reclaimed to increase the size of the
136 freebsd-boot partition.</para>
140 <para>Due to a bug in earlier versions of &man.clang.1; that
141 is difficult to work around in the upgrade process, to
142 upgrade the system from sources via buildworld to -CURRENT
143 or &release;, it is necessary to upgrade machines running
144 10.x to revision r286033. Source-based upgrades from
145 10.3-RELEASE are not affected. This differs from the
146 historical situation where one could generally upgrade from
147 anywhere on earlier stable branches, so caution should be
153 <sect1 xml:id="late-news">
154 <title>Late-Breaking News</title>
156 <para>No news.</para>