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<!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=UTF-8" /><title>E.74. Release 9.3.10</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets V1.79.1" /><link rel="prev" href="release-9-3-11.html" title="E.73. Release 9.3.11" /><link rel="next" href="release-9-3-9.html" title="E.75. Release 9.3.9" /></head><body><div xmlns="http://www.w3.org/TR/xhtml1/transitional" class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">E.74. Release 9.3.10</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="release-9-3-11.html" title="E.73. Release 9.3.11">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="release.html" title="Appendix E. Release Notes">Up</a></td><th width="60%" align="center">Appendix E. Release Notes</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 11.1 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="release-9-3-9.html" title="E.75. Release 9.3.9">Next</a></td></tr></table><hr></hr></div><div class="sect1" id="RELEASE-9-3-10"><div class="titlepage"><div><div><h2 class="title" style="clear: both">E.74. Release 9.3.10</h2></div></div></div><div class="toc"><dl class="toc"><dt><span class="sect2"><a href="release-9-3-10.html#id-1.11.6.78.4">E.74.1. Migration to Version 9.3.10</a></span></dt><dt><span class="sect2"><a href="release-9-3-10.html#id-1.11.6.78.5">E.74.2. Changes</a></span></dt></dl></div><p><strong>Release date: </strong>2015-10-08</p><p>
   This release contains a variety of fixes from 9.3.9.
   For information about new features in the 9.3 major release, see
   <a class="xref" href="release-9-3.html" title="E.84. Release 9.3">Section E.84</a>.
  </p><div class="sect2" id="id-1.11.6.78.4"><div class="titlepage"><div><div><h3 class="title">E.74.1. Migration to Version 9.3.10</h3></div></div></div><p>
    A dump/restore is not required for those running 9.3.X.
   </p><p>
    However, if you are upgrading from a version earlier than 9.3.9,
    see <a class="xref" href="release-9-3-9.html" title="E.75. Release 9.3.9">Section E.75</a>.
   </p></div><div class="sect2" id="id-1.11.6.78.5"><div class="titlepage"><div><div><h3 class="title">E.74.2. Changes</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p>
      Guard against stack overflows in <code class="type">json</code> parsing
      (Oskari Saarenmaa)
     </p><p>
      If an application constructs PostgreSQL <code class="type">json</code>
      or <code class="type">jsonb</code> values from arbitrary user input, the application's
      users can reliably crash the PostgreSQL server, causing momentary
      denial of service.  (CVE-2015-5289)
     </p></li><li class="listitem"><p>
      Fix <code class="filename">contrib/pgcrypto</code> to detect and report
      too-short <code class="function">crypt()</code> salts (Josh Kupershmidt)
     </p><p>
      Certain invalid salt arguments crashed the server or disclosed a few
      bytes of server memory.  We have not ruled out the viability of
      attacks that arrange for presence of confidential information in the
      disclosed bytes, but they seem unlikely.  (CVE-2015-5288)
     </p></li><li class="listitem"><p>
      Fix subtransaction cleanup after a portal (cursor) belonging to an
      outer subtransaction fails (Tom Lane, Michael Paquier)
     </p><p>
      A function executed in an outer-subtransaction cursor could cause an
      assertion failure or crash by referencing a relation created within an
      inner subtransaction.
     </p></li><li class="listitem"><p>
      Ensure all relations referred to by an updatable view are properly
      locked during an update statement (Dean Rasheed)
     </p></li><li class="listitem"><p>
      Fix insertion of relations into the relation cache <span class="quote">“<span class="quote">init file</span>”</span>
      (Tom Lane)
     </p><p>
      An oversight in a patch in the most recent minor releases
      caused <code class="structname">pg_trigger_tgrelid_tgname_index</code> to be omitted
      from the init file.  Subsequent sessions detected this, then deemed the
      init file to be broken and silently ignored it, resulting in a
      significant degradation in session startup time.  In addition to fixing
      the bug, install some guards so that any similar future mistake will be
      more obvious.
     </p></li><li class="listitem"><p>
      Avoid O(N^2) behavior when inserting many tuples into a SPI query
      result (Neil Conway)
     </p></li><li class="listitem"><p>
      Improve <code class="command">LISTEN</code> startup time when there are many unread
      notifications (Matt Newell)
     </p></li><li class="listitem"><p>
      Fix performance problem when a session alters large numbers of foreign
      key constraints (Jan Wieck, Tom Lane)
     </p><p>
      This was seen primarily when restoring <span class="application">pg_dump</span> output
      for databases with many thousands of tables.
     </p></li><li class="listitem"><p>
      Disable SSL renegotiation by default (Michael Paquier, Andres Freund)
     </p><p>
      While use of SSL renegotiation is a good idea in theory, we have seen
      too many bugs in practice, both in the underlying OpenSSL library and
      in our usage of it.  Renegotiation will be removed entirely in 9.5 and
      later.  In the older branches, just change the default value
      of <code class="varname">ssl_renegotiation_limit</code> to zero (disabled).
     </p></li><li class="listitem"><p>
      Lower the minimum values of the <code class="literal">*_freeze_max_age</code> parameters
      (Andres Freund)
     </p><p>
      This is mainly to make tests of related behavior less time-consuming,
      but it may also be of value for installations with limited disk space.
     </p></li><li class="listitem"><p>
      Limit the maximum value of <code class="varname">wal_buffers</code> to 2GB to avoid
      server crashes (Josh Berkus)
     </p></li><li class="listitem"><p>
      Avoid logging complaints when a parameter that can only be set at
      server start appears multiple times in <code class="filename">postgresql.conf</code>,
      and fix counting of line numbers after an <code class="literal">include_dir</code>
      directive (Tom Lane)
     </p></li><li class="listitem"><p>
      Fix rare internal overflow in multiplication of <code class="type">numeric</code> values
      (Dean Rasheed)
     </p></li><li class="listitem"><p>
      Guard against hard-to-reach stack overflows involving record types,
      range types, <code class="type">json</code>, <code class="type">jsonb</code>, <code class="type">tsquery</code>,
      <code class="type">ltxtquery</code> and <code class="type">query_int</code> (Noah Misch)
     </p></li><li class="listitem"><p>
      Fix handling of <code class="literal">DOW</code> and <code class="literal">DOY</code> in datetime input
      (Greg Stark)
     </p><p>
      These tokens aren't meant to be used in datetime values, but previously
      they resulted in opaque internal error messages rather
      than <span class="quote">“<span class="quote">invalid input syntax</span>”</span>.
     </p></li><li class="listitem"><p>
      Add more query-cancel checks to regular expression matching (Tom Lane)
     </p></li><li class="listitem"><p>
      Add recursion depth protections to regular expression, <code class="literal">SIMILAR
      TO</code>, and <code class="literal">LIKE</code> matching (Tom Lane)
     </p><p>
      Suitable search patterns and a low stack depth limit could lead to
      stack-overrun crashes.
     </p></li><li class="listitem"><p>
      Fix potential infinite loop in regular expression execution (Tom Lane)
     </p><p>
      A search pattern that can apparently match a zero-length string, but
      actually doesn't match because of a back reference, could lead to an
      infinite loop.
     </p></li><li class="listitem"><p>
      In regular expression execution, correctly record match data for
      capturing parentheses within a quantifier even when the match is
      zero-length (Tom Lane)
     </p></li><li class="listitem"><p>
      Fix low-memory failures in regular expression compilation
      (Andreas Seltenreich)
     </p></li><li class="listitem"><p>
      Fix low-probability memory leak during regular expression execution
      (Tom Lane)
     </p></li><li class="listitem"><p>
      Fix rare low-memory failure in lock cleanup during transaction abort
      (Tom Lane)
     </p></li><li class="listitem"><p>
      Fix <span class="quote">“<span class="quote">unexpected out-of-memory situation during sort</span>”</span> errors
      when using tuplestores with small <code class="varname">work_mem</code> settings (Tom
      Lane)
     </p></li><li class="listitem"><p>
      Fix very-low-probability stack overrun in <code class="function">qsort</code> (Tom Lane)
     </p></li><li class="listitem"><p>
      Fix <span class="quote">“<span class="quote">invalid memory alloc request size</span>”</span> failure in hash joins
      with large <code class="varname">work_mem</code> settings (Tomas Vondra, Tom Lane)
     </p></li><li class="listitem"><p>
      Fix assorted planner bugs (Tom Lane)
     </p><p>
      These mistakes could lead to incorrect query plans that would give wrong
      answers, or to assertion failures in assert-enabled builds, or to odd
      planner errors such as <span class="quote">“<span class="quote">could not devise a query plan for the
      given query</span>”</span>, <span class="quote">“<span class="quote">could not find pathkey item to
      sort</span>”</span>, <span class="quote">“<span class="quote">plan should not reference subplan's variable</span>”</span>,
      or <span class="quote">“<span class="quote">failed to assign all NestLoopParams to plan nodes</span>”</span>.
      Thanks are due to Andreas Seltenreich and Piotr Stefaniak for fuzz
      testing that exposed these problems.
     </p></li><li class="listitem"><p>
      Improve planner's performance for <code class="command">UPDATE</code>/<code class="command">DELETE</code>
      on large inheritance sets (Tom Lane, Dean Rasheed)
     </p></li><li class="listitem"><p>
      Ensure standby promotion trigger files are removed at postmaster
      startup (Michael Paquier, Fujii Masao)
     </p><p>
      This prevents unwanted promotion from occurring if these files appear
      in a database backup that is used to initialize a new standby server.
     </p></li><li class="listitem"><p>
      During postmaster shutdown, ensure that per-socket lock files are
      removed and listen sockets are closed before we remove
      the <code class="filename">postmaster.pid</code> file (Tom Lane)
     </p><p>
      This avoids race-condition failures if an external script attempts to
      start a new postmaster as soon as <code class="literal">pg_ctl stop</code> returns.
     </p></li><li class="listitem"><p>
      Fix postmaster's handling of a startup-process crash during crash
      recovery (Tom Lane)
     </p><p>
      If, during a crash recovery cycle, the startup process crashes without
      having restored database consistency, we'd try to launch a new startup
      process, which typically would just crash again, leading to an infinite
      loop.
     </p></li><li class="listitem"><p>
      Make emergency autovacuuming for multixact wraparound more robust
      (Andres Freund)
     </p></li><li class="listitem"><p>
      Do not print a <code class="literal">WARNING</code> when an autovacuum worker is already
      gone when we attempt to signal it, and reduce log verbosity for such
      signals (Tom Lane)
     </p></li><li class="listitem"><p>
      Prevent autovacuum launcher from sleeping unduly long if the server
      clock is moved backwards a large amount (Álvaro Herrera)
     </p></li><li class="listitem"><p>
      Ensure that cleanup of a GIN index's pending-insertions list is
      interruptable by cancel requests (Jeff Janes)
     </p></li><li class="listitem"><p>
      Allow all-zeroes pages in GIN indexes to be reused (Heikki Linnakangas)
     </p><p>
      Such a page might be left behind after a crash.
     </p></li><li class="listitem"><p>
      Fix handling of all-zeroes pages in SP-GiST indexes (Heikki
      Linnakangas)
     </p><p>
      <code class="command">VACUUM</code> attempted to recycle such pages, but did so in a
      way that wasn't crash-safe.
     </p></li><li class="listitem"><p>
      Fix off-by-one error that led to otherwise-harmless warnings
      about <span class="quote">“<span class="quote">apparent wraparound</span>”</span> in subtrans/multixact truncation
      (Thomas Munro)
     </p></li><li class="listitem"><p>
      Fix misreporting of <code class="command">CONTINUE</code> and <code class="command">MOVE</code> statement
      types in <span class="application">PL/pgSQL</span>'s error context messages
      (Pavel Stehule, Tom Lane)
     </p></li><li class="listitem"><p>
      Fix <span class="application">PL/Perl</span> to handle non-<acronym class="acronym">ASCII</acronym> error
      message texts correctly (Alex Hunsaker)
     </p></li><li class="listitem"><p>
      Fix <span class="application">PL/Python</span> crash when returning the string
      representation of a <code class="type">record</code> result (Tom Lane)
     </p></li><li class="listitem"><p>
      Fix some places in <span class="application">PL/Tcl</span> that neglected to check for
      failure of <code class="function">malloc()</code> calls (Michael Paquier, Álvaro
      Herrera)
     </p></li><li class="listitem"><p>
      In <code class="filename">contrib/isn</code>, fix output of ISBN-13 numbers that begin
      with 979 (Fabien Coelho)
     </p><p>
      EANs beginning with 979 (but not 9790) are considered ISBNs, but they
      must be printed in the new 13-digit format, not the 10-digit format.
     </p></li><li class="listitem"><p>
      Improve <code class="filename">contrib/postgres_fdw</code>'s handling of
      collation-related decisions (Tom Lane)
     </p><p>
      The main user-visible effect is expected to be that comparisons
      involving <code class="type">varchar</code> columns will be sent to the remote server
      for execution in more cases than before.
     </p></li><li class="listitem"><p>
      Improve <span class="application">libpq</span>'s handling of out-of-memory conditions
      (Michael Paquier, Heikki Linnakangas)
     </p></li><li class="listitem"><p>
      Fix memory leaks and missing out-of-memory checks
      in <span class="application">ecpg</span> (Michael Paquier)
     </p></li><li class="listitem"><p>
      Fix <span class="application">psql</span>'s code for locale-aware formatting of numeric
      output (Tom Lane)
     </p><p>
      The formatting code invoked by <code class="literal">\pset numericlocale on</code>
      did the wrong thing for some uncommon cases such as numbers with an
      exponent but no decimal point.  It could also mangle already-localized
      output from the <code class="type">money</code> data type.
     </p></li><li class="listitem"><p>
      Prevent crash in <span class="application">psql</span>'s <code class="command">\c</code> command when
      there is no current connection (Noah Misch)
     </p></li><li class="listitem"><p>
      Make <span class="application">pg_dump</span> handle inherited <code class="literal">NOT VALID</code>
      check constraints correctly (Tom Lane)
     </p></li><li class="listitem"><p>
      Fix selection of default <span class="application">zlib</span> compression level
      in <span class="application">pg_dump</span>'s directory output format (Andrew Dunstan)
     </p></li><li class="listitem"><p>
      Ensure that temporary files created during a <span class="application">pg_dump</span>
      run with <acronym class="acronym">tar</acronym>-format output are not world-readable (Michael
      Paquier)
     </p></li><li class="listitem"><p>
      Fix <span class="application">pg_dump</span> and <span class="application">pg_upgrade</span> to support
      cases where the <code class="literal">postgres</code> or <code class="literal">template1</code> database
      is in a non-default tablespace (Marti Raudsepp, Bruce Momjian)
     </p></li><li class="listitem"><p>
      Fix <span class="application">pg_dump</span> to handle object privileges sanely when
      dumping from a server too old to have a particular privilege type
      (Tom Lane)
     </p><p>
      When dumping data types from pre-9.2 servers, and when dumping
      functions or procedural languages from pre-7.3
      servers, <span class="application">pg_dump</span> would
      produce <code class="command">GRANT</code>/<code class="command">REVOKE</code> commands that revoked the
      owner's grantable privileges and instead granted all privileges
      to <code class="literal">PUBLIC</code>.  Since the privileges involved are
      just <code class="literal">USAGE</code> and <code class="literal">EXECUTE</code>, this isn't a security
      problem, but it's certainly a surprising representation of the older
      systems' behavior.  Fix it to leave the default privilege state alone
      in these cases.
     </p></li><li class="listitem"><p>
      Fix <span class="application">pg_dump</span> to dump shell types (Tom Lane)
     </p><p>
      Shell types (that is, not-yet-fully-defined types) aren't useful for
      much, but nonetheless <span class="application">pg_dump</span> should dump them.
     </p></li><li class="listitem"><p>
      Fix assorted minor memory leaks in <span class="application">pg_dump</span> and other
      client-side programs (Michael Paquier)
     </p></li><li class="listitem"><p>
      Fix spinlock assembly code for PPC hardware to be compatible
      with <acronym class="acronym">AIX</acronym>'s native assembler (Tom Lane)
     </p><p>
      Building with <span class="application">gcc</span> didn't work if <span class="application">gcc</span>
      had been configured to use the native assembler, which is becoming more
      common.
     </p></li><li class="listitem"><p>
      On <acronym class="acronym">AIX</acronym>, test the <code class="literal">-qlonglong</code> compiler option
      rather than just assuming it's safe to use (Noah Misch)
     </p></li><li class="listitem"><p>
      On <acronym class="acronym">AIX</acronym>, use <code class="literal">-Wl,-brtllib</code> link option to allow
      symbols to be resolved at runtime (Noah Misch)
     </p><p>
      Perl relies on this ability in 5.8.0 and later.
     </p></li><li class="listitem"><p>
      Avoid use of inline functions when compiling with
      32-bit <span class="application">xlc</span>, due to compiler bugs (Noah Misch)
     </p></li><li class="listitem"><p>
      Use <code class="filename">librt</code> for <code class="function">sched_yield()</code> when necessary,
      which it is on some Solaris versions (Oskari Saarenmaa)
     </p></li><li class="listitem"><p>
      Fix Windows <code class="filename">install.bat</code> script to handle target directory
      names that contain spaces (Heikki Linnakangas)
     </p></li><li class="listitem"><p>
      Make the numeric form of the <span class="productname">PostgreSQL</span> version number
      (e.g., <code class="literal">90405</code>) readily available to extension Makefiles,
      as a variable named <code class="varname">VERSION_NUM</code> (Michael Paquier)
     </p></li><li class="listitem"><p>
      Update time zone data files to <span class="application">tzdata</span> release 2015g for
      DST law changes in Cayman Islands, Fiji, Moldova, Morocco, Norfolk
      Island, North Korea, Turkey, and Uruguay.  There is a new zone name
      <code class="literal">America/Fort_Nelson</code> for the Canadian Northern Rockies.
     </p></li></ul></div></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="release-9-3-11.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="release.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="release-9-3-9.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">E.73. Release 9.3.11 </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> E.75. Release 9.3.9</td></tr></table></div></body></html>