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+ <sect1 id="release-8-4-22">
+ <title>Release 8.4.22</title>
+
+ <note>
+ <title>Release Date</title>
+ <simpara>2014-07-24</simpara>
+ </note>
+
+ <para>
+ This release contains a variety of fixes from 8.4.21.
+ For information about new features in the 8.4 major release, see
+ <xref linkend="release-8-4">.
+ </para>
+
+ <para>
+ This is expected to be the last <productname>PostgreSQL</> release
+ in the 8.4.X series. Users are encouraged to update to a newer
+ release branch soon.
+ </para>
+
+ <sect2>
+ <title>Migration to Version 8.4.22</title>
+
+ <para>
+ A dump/restore is not required for those running 8.4.X.
+ </para>
+
+ <para>
+ However, this release corrects an index corruption problem in some GiST
+ indexes. See the first changelog entry below to find out whether your
+ installation has been affected and what steps you should take if so.
+ </para>
+
+ <para>
+ Also, if you are upgrading from a version earlier than 8.4.19,
+ see <xref linkend="release-8-4-19">.
+ </para>
+
+ </sect2>
+
+ <sect2>
+ <title>Changes</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Correctly initialize padding bytes in <filename>contrib/btree_gist</>
+ indexes on <type>bit</> columns (Heikki Linnakangas)
+ </para>
+
+ <para>
+ This error could result in incorrect query results due to values that
+ should compare equal not being seen as equal.
+ Users with GiST indexes on <type>bit</> or <type>bit varying</>
+ columns should <command>REINDEX</> those indexes after installing this
+ update.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Protect against torn pages when deleting GIN list pages (Heikki
+ Linnakangas)
+ </para>
+
+ <para>
+ This fix prevents possible index corruption if a system crash occurs
+ while the page update is being written to disk.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix possibly-incorrect cache invalidation during nested calls
+ to <function>ReceiveSharedInvalidMessages</> (Andres Freund)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Don't assume a subquery's output is unique if there's a set-returning
+ function in its targetlist (David Rowley)
+ </para>
+
+ <para>
+ This oversight could lead to misoptimization of constructs
+ like <literal>WHERE x IN (SELECT y, generate_series(1,10) FROM t GROUP
+ BY y)</literal>.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix failure to detoast fields in composite elements of structured
+ types (Tom Lane)
+ </para>
+
+ <para>
+ This corrects cases where TOAST pointers could be copied into other
+ tables without being dereferenced. If the original data is later
+ deleted, it would lead to errors like <quote>missing chunk number 0
+ for toast value ...</> when the now-dangling pointer is used.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <quote>record type has not been registered</> failures with
+ whole-row references to the output of Append plan nodes (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix possible crash when invoking a user-defined function while
+ rewinding a cursor (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix query-lifespan memory leak while evaluating the arguments for a
+ function in <literal>FROM</> (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix session-lifespan memory leaks in regular-expression processing
+ (Tom Lane, Arthur O'Dwyer, Greg Stark)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix data encoding error in <filename>hungarian.stop</> (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix liveness checks for rows that were inserted in the current
+ transaction and then deleted by a now-rolled-back subtransaction
+ (Andres Freund)
+ </para>
+
+ <para>
+ This could cause problems (at least spurious warnings, and at worst an
+ infinite loop) if <command>CREATE INDEX</> or <command>CLUSTER</> were
+ done later in the same transaction.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Clear <structname>pg_stat_activity</>.<structfield>xact_start</>
+ during <command>PREPARE TRANSACTION</> (Andres Freund)
+ </para>
+
+ <para>
+ After the <command>PREPARE</>, the originating session is no longer in
+ a transaction, so it should not continue to display a transaction
+ start time.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <command>REASSIGN OWNED</> to not fail for text search objects
+ (Álvaro Herrera)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Block signals during postmaster startup (Tom Lane)
+ </para>
+
+ <para>
+ This ensures that the postmaster will properly clean up after itself
+ if, for example, it receives <systemitem>SIGINT</> while still
+ starting up.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Secure Unix-domain sockets of temporary postmasters started during
+ <literal>make check</> (Noah Misch)
+ </para>
+
+ <para>
+ Any local user able to access the socket file could connect as the
+ server's bootstrap superuser, then proceed to execute arbitrary code as
+ the operating-system user running the test, as we previously noted in
+ CVE-2014-0067. This change defends against that risk by placing the
+ server's socket in a temporary, mode 0700 subdirectory
+ of <filename>/tmp</>. The hazard remains however on platforms where
+ Unix sockets are not supported, notably Windows, because then the
+ temporary postmaster must accept local TCP connections.
+ </para>
+
+ <para>
+ A useful side effect of this change is to simplify
+ <literal>make check</> testing in builds that
+ override <literal>DEFAULT_PGSOCKET_DIR</>. Popular non-default values
+ like <filename>/var/run/postgresql</> are often not writable by the
+ build user, requiring workarounds that will no longer be necessary.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ On Windows, allow new sessions to absorb values of PGC_BACKEND
+ parameters (such as <xref linkend="guc-log-connections">) from the
+ configuration file (Amit Kapila)
+ </para>
+
+ <para>
+ Previously, if such a parameter were changed in the file post-startup,
+ the change would have no effect.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Properly quote executable path names on Windows (Nikhil Deshpande)
+ </para>
+
+ <para>
+ This oversight could cause <application>initdb</>
+ and <application>pg_upgrade</> to fail on Windows, if the installation
+ path contained both spaces and <literal>@</> signs.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix linking of <application>libpython</> on OS X (Tom Lane)
+ </para>
+
+ <para>
+ The method we previously used can fail with the Python library
+ supplied by Xcode 5.0 and later.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Avoid buffer bloat in <application>libpq</> when the server
+ consistently sends data faster than the client can absorb it
+ (Shin-ichi Morita, Tom Lane)
+ </para>
+
+ <para>
+ <application>libpq</> could be coerced into enlarging its input buffer
+ until it runs out of memory (which would be reported misleadingly
+ as <quote>lost synchronization with server</>). Under ordinary
+ circumstances it's quite far-fetched that data could be continuously
+ transmitted more quickly than the <function>recv()</> loop can
+ absorb it, but this has been observed when the client is artificially
+ slowed by scheduler constraints.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Ensure that LDAP lookup attempts in <application>libpq</> time out as
+ intended (Laurenz Albe)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>pg_restore</>'s processing of old-style large object
+ comments (Tom Lane)
+ </para>
+
+ <para>
+ A direct-to-database restore from an archive file generated by a
+ pre-9.0 version of <application>pg_dump</> would usually fail if the
+ archive contained more than a few comments for large objects.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ In <filename>contrib/pgcrypto</> functions, ensure sensitive
+ information is cleared from stack variables before returning
+ (Marko Kreen)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ In <filename>contrib/uuid-ossp</>, cache the state of the OSSP UUID
+ library across calls (Tom Lane)
+ </para>
+
+ <para>
+ This improves the efficiency of UUID generation and reduces the amount
+ of entropy drawn from <filename>/dev/urandom</>, on platforms that
+ have that.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Update time zone data files to <application>tzdata</> release 2014e
+ for DST law changes in Crimea, Egypt, and Morocco.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect2>
+ </sect1>
+
<sect1 id="release-8-4-21">
<title>Release 8.4.21</title>
for DST law changes in Fiji and Turkey, plus historical changes in
Israel and Ukraine.
</para>
-
- <para>
- </para>
</listitem>
</itemizedlist>
Prevent crash triggered by constant-false WHERE conditions during
GEQO optimization (Tom Lane)
</para>
-
- <para>
- </para>
</listitem>
<listitem>
projects / postgresql / commitdiff