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Subject: Re: BUG #16329: Valgrind detects an invalid read when building a gist
 index with buffering
From: Alexander Lakhin <exclusion@gmail.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: pgsql-bugs@lists.postgresql.org
References: <16329-7a6aa9b6fa1118a1@postgresql.org>
 <ca1f896b-e5d1-53a7-5bc3-9451ab9aca22@gmail.com>
 <e91e45fd-a614-bb87-e9fc-c556c2b95fe5@gmail.com>
 <3dda6945-c147-5afc-7720-38ec6848dafa@gmail.com>
 <10261.1588705157@sss.pgh.pa.us>
 <93ca4540-0016-8217-2b31-535613499987@gmail.com>
Message-ID: <06f117b8-bbc1-4190-d204-ef329121cbca@gmail.com>
Date: Tue, 12 May 2020 08:00:01 +0300
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11.05.2020 23:00, Alexander Lakhin wrote:
> Please look at the improved test that makes the code coverage for
> gistbuildbuffers.c almost 100%.
That improved test exposes another bug (when running under valgrind):

==00:00:00:34.861 1439277== Conditional jump or move depends on
uninitialised value(s)
==00:00:00:34.861 1439277==    at 0x1FFE6A: gistpenalty (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F86E0:
gistRelocateBuildBuffersOnSplit (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F67B7: gistbufferinginserttuples
(in .../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F6B6F: gistbufferinginserttuples
(in .../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F6E0E: gistProcessItup (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F701F: gistProcessEmptyingQueue (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F706D: gistBufferingBuildInsert (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F7817: gistBuildCallback (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x2293F3:
heapam_index_build_range_scan (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F7A23: gistbuild (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x2B8372: index_build (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x2B9C8D: index_create (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==  Uninitialised value was created by a heap
allocation
==00:00:00:34.861 1439277==    at 0x6B646A: palloc (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F5A8A: initGISTstate (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F7913: gistbuild (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x2B8372: index_build (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x2B9C8D: index_create (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x361677: DefineIndex (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x563FE3: ProcessUtilitySlow (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x56358F: standard_ProcessUtility (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x56366E: ProcessUtility (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x55FAED: PortalRunUtility (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x560640: PortalRunMulti (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x5612F8: PortalRun (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==
{
   <insert_a_suppression_name_here>
   Memcheck:Cond
   fun:gistpenalty
   fun:gistRelocateBuildBuffersOnSplit
   fun:gistbufferinginserttuples
   fun:gistbufferinginserttuples
   fun:gistProcessItup
   fun:gistProcessEmptyingQueue
   fun:gistBufferingBuildInsert
   fun:gistBuildCallback
   fun:heapam_index_build_range_scan
   fun:gistbuild
   fun:index_build
   fun:index_create
}
==00:00:00:34.861 1439277== Use of uninitialised value of size 8
==00:00:00:34.861 1439277==    at 0x68E92D: FunctionCall3Coll (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==  Uninitialised value was created by a heap
allocation
==00:00:00:34.861 1439277==    at 0x6B646A: palloc (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F5A8A: initGISTstate (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F7913: gistbuild (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x2B8372: index_build (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x2B9C8D: index_create (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x361677: DefineIndex (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x563FE3: ProcessUtilitySlow (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x56358F: standard_ProcessUtility (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x56366E: ProcessUtility (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x55FAED: PortalRunUtility (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x560640: PortalRunMulti (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x5612F8: PortalRun (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==
{
   <insert_a_suppression_name_here>
   Memcheck:Value8
   fun:FunctionCall3Coll
}
==00:00:00:34.861 1439277== Jump to the invalid address stated on the
next line
==00:00:00:34.861 1439277==    at 0x0: ???
==00:00:00:34.861 1439277==    by 0x68E92E: FunctionCall3Coll (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1FFE9F: gistpenalty (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F86E0:
gistRelocateBuildBuffersOnSplit (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F67B7: gistbufferinginserttuples
(in .../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F6B6F: gistbufferinginserttuples
(in .../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F6E0E: gistProcessItup (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F701F: gistProcessEmptyingQueue (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F706D: gistBufferingBuildInsert (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F7817: gistBuildCallback (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x2293F3:
heapam_index_build_range_scan (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F7A23: gistbuild (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==  Address 0x0 is not stack'd, malloc'd or
(recently) free'd
==00:00:00:34.861 1439277==
{
   <insert_a_suppression_name_here>
   Memcheck:Jump
   obj:*
   fun:FunctionCall3Coll
   fun:gistpenalty
   fun:gistRelocateBuildBuffersOnSplit
   fun:gistbufferinginserttuples
   fun:gistbufferinginserttuples
   fun:gistProcessItup
   fun:gistProcessEmptyingQueue
   fun:gistBufferingBuildInsert
   fun:gistBuildCallback
   fun:heapam_index_build_range_scan
   fun:gistbuild
}
==00:00:00:34.861 1439277==
==00:00:00:34.861 1439277== Process terminating with default action of
signal 11 (SIGSEGV): dumping core
==00:00:00:34.861 1439277==  Bad permissions for mapped region at
address 0x0
==00:00:00:34.861 1439277==    at 0x0: ???
==00:00:00:34.861 1439277==    by 0x68E92E: FunctionCall3Coll (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1FFE9F: gistpenalty (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F86E0:
gistRelocateBuildBuffersOnSplit (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F67B7: gistbufferinginserttuples
(in .../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F6B6F: gistbufferinginserttuples
(in .../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F6E0E: gistProcessItup (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F701F: gistProcessEmptyingQueue (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F706D: gistBufferingBuildInsert (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F7817: gistBuildCallback (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x2293F3:
heapam_index_build_range_scan (in
.../tmp_install/usr/local/pgsql/bin/postgres)
==00:00:00:34.861 1439277==    by 0x1F7A23: gistbuild (in
.../tmp_install/usr/local/pgsql/bin/postgres)
2020-05-12 06:51:30.764 MSK postmaster[1439231] LOG:  server process
(PID 1439277) was terminated by signal 11: Segmentation fault
2020-05-12 06:51:30.764 MSK postmaster[1439231] DETAIL:  Failed process
was running: create index gist_pointidx6 on gist_point_tbl using gist(p)
include(t) with (buffering = on, fillfactor=50);

Best regards,
Alexander

--------------662CB7DFBD678EBB7C61F02E
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    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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  <body>
    <div class="moz-cite-prefix">11.05.2020 23:00, Alexander Lakhin
      wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:93ca4540-0016-8217-2b31-535613499987@gmail.com">
      <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
      Please look at the improved test that makes the code coverage for
      <a moz-do-not-send="true">gistbuildbuffers.c</a> almost 100%.<br>
    </blockquote>
    That improved test exposes another bug (when running under
    valgrind):<br>
    <br>
    ==00:00:00:34.861 1439277== Conditional jump or move depends on
    uninitialised value(s)<br>
    ==00:00:00:34.861 1439277==    at 0x1FFE6A: gistpenalty (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F86E0:
    gistRelocateBuildBuffersOnSplit (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F67B7:
    gistbufferinginserttuples (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F6B6F:
    gistbufferinginserttuples (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F6E0E: gistProcessItup (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F701F: gistProcessEmptyingQueue
    (in .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F706D: gistBufferingBuildInsert
    (in .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F7817: gistBuildCallback (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x2293F3:
    heapam_index_build_range_scan (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F7A23: gistbuild (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x2B8372: index_build (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x2B9C8D: index_create (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==  Uninitialised value was created by a
    heap allocation<br>
    ==00:00:00:34.861 1439277==    at 0x6B646A: palloc (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F5A8A: initGISTstate (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F7913: gistbuild (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x2B8372: index_build (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x2B9C8D: index_create (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x361677: DefineIndex (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x563FE3: ProcessUtilitySlow (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x56358F: standard_ProcessUtility
    (in .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x56366E: ProcessUtility (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x55FAED: PortalRunUtility (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x560640: PortalRunMulti (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x5612F8: PortalRun (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277== <br>
    {<br>
       &lt;insert_a_suppression_name_here&gt;<br>
       Memcheck:Cond<br>
       fun:gistpenalty<br>
       fun:gistRelocateBuildBuffersOnSplit<br>
       fun:gistbufferinginserttuples<br>
       fun:gistbufferinginserttuples<br>
       fun:gistProcessItup<br>
       fun:gistProcessEmptyingQueue<br>
       fun:gistBufferingBuildInsert<br>
       fun:gistBuildCallback<br>
       fun:heapam_index_build_range_scan<br>
       fun:gistbuild<br>
       fun:index_build<br>
       fun:index_create<br>
    }<br>
    ==00:00:00:34.861 1439277== Use of uninitialised value of size 8<br>
    ==00:00:00:34.861 1439277==    at 0x68E92D: FunctionCall3Coll (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==  Uninitialised value was created by a
    heap allocation<br>
    ==00:00:00:34.861 1439277==    at 0x6B646A: palloc (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F5A8A: initGISTstate (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F7913: gistbuild (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x2B8372: index_build (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x2B9C8D: index_create (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x361677: DefineIndex (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x563FE3: ProcessUtilitySlow (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x56358F: standard_ProcessUtility
    (in .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x56366E: ProcessUtility (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x55FAED: PortalRunUtility (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x560640: PortalRunMulti (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x5612F8: PortalRun (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277== <br>
    {<br>
       &lt;insert_a_suppression_name_here&gt;<br>
       Memcheck:Value8<br>
       fun:FunctionCall3Coll<br>
    }<br>
    ==00:00:00:34.861 1439277== Jump to the invalid address stated on
    the next line<br>
    ==00:00:00:34.861 1439277==    at 0x0: ???<br>
    ==00:00:00:34.861 1439277==    by 0x68E92E: FunctionCall3Coll (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1FFE9F: gistpenalty (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F86E0:
    gistRelocateBuildBuffersOnSplit (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F67B7:
    gistbufferinginserttuples (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F6B6F:
    gistbufferinginserttuples (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F6E0E: gistProcessItup (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F701F: gistProcessEmptyingQueue
    (in .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F706D: gistBufferingBuildInsert
    (in .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F7817: gistBuildCallback (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x2293F3:
    heapam_index_build_range_scan (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F7A23: gistbuild (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==  Address 0x0 is not stack'd, malloc'd or
    (recently) free'd<br>
    ==00:00:00:34.861 1439277== <br>
    {<br>
       &lt;insert_a_suppression_name_here&gt;<br>
       Memcheck:Jump<br>
       obj:*<br>
       fun:FunctionCall3Coll<br>
       fun:gistpenalty<br>
       fun:gistRelocateBuildBuffersOnSplit<br>
       fun:gistbufferinginserttuples<br>
       fun:gistbufferinginserttuples<br>
       fun:gistProcessItup<br>
       fun:gistProcessEmptyingQueue<br>
       fun:gistBufferingBuildInsert<br>
       fun:gistBuildCallback<br>
       fun:heapam_index_build_range_scan<br>
       fun:gistbuild<br>
    }<br>
    ==00:00:00:34.861 1439277== <br>
    ==00:00:00:34.861 1439277== Process terminating with default action
    of signal 11 (SIGSEGV): dumping core<br>
    ==00:00:00:34.861 1439277==  Bad permissions for mapped region at
    address 0x0<br>
    ==00:00:00:34.861 1439277==    at 0x0: ???<br>
    ==00:00:00:34.861 1439277==    by 0x68E92E: FunctionCall3Coll (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1FFE9F: gistpenalty (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F86E0:
    gistRelocateBuildBuffersOnSplit (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F67B7:
    gistbufferinginserttuples (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F6B6F:
    gistbufferinginserttuples (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F6E0E: gistProcessItup (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F701F: gistProcessEmptyingQueue
    (in .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F706D: gistBufferingBuildInsert
    (in .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F7817: gistBuildCallback (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x2293F3:
    heapam_index_build_range_scan (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    ==00:00:00:34.861 1439277==    by 0x1F7A23: gistbuild (in
    .../tmp_install/usr/local/pgsql/bin/postgres)<br>
    2020-05-12 06:51:30.764 MSK postmaster[1439231] LOG:  server process
    (PID 1439277) was terminated by signal 11: Segmentation fault<br>
    2020-05-12 06:51:30.764 MSK postmaster[1439231] DETAIL:  Failed
    process was running: create index gist_pointidx6 on gist_point_tbl
    using gist(p) include(t) with (buffering = on, fillfactor=50);<br>
    <br>
    Best regards,<br>
    Alexander<br>
  </body>
</html>

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