[pgpool-hackers: 463] Re: penultimate patch for exception and memory manager ( EXCEPTION_MGR branch)

Tatsuo Ishii ishii at postgresql.org
Wed Feb 19 13:23:32 JST 2014


Usama,

Thanks for the explanation.

BTW, I ran a reggression test against EXEC_MANAGER branch and got
serious problems.

testing 003.failover...*** glibc detected *** pgpool: worker process: free(): invalid pointer: 0x00000000007756c8 ***

testing 055.backend_all_down...*** glibc detected *** /home/t-ishii/work/git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool: double free or corruption (!prev): 0x000000000075c050 ***

[ and regression test hangs]

Detailed log attached.

Best regards,
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese: http://www.sraoss.co.jp

> On Thu, Feb 13, 2014 at 3:49 AM, Tatsuo Ishii <ishii at postgresql.org> wrote:
> 
>> Usama,
>>
>> Thanks for your hard work.
>>
>> One thing I noticed is, you moved src/tools/pcp to src/utils/pcp. Is
>> there any reason for this?
>>
> 
> Since the pgpool binary and pcp tool binaries all requires the functions
> defined in pcp_stream.c for reading and writing to pcp streams. But with
> the arrival of memory manager API in pgpool, pcp stream functions requires
> to distinguish between calls made from pgpool and pcp tools. As we need to
> create reading and writing buffers in specific MemoryContexts when the
> function is invoked from pgpool, and as pcp tools does not have a concept
> of MemoryContext so the step of selecting a MemoryContext before allocating
> a memory needed to be skipped when in pcp tools environment.
> 
> To achieve the above, the patch makes the libpcp exclusive for the tool
> binaries only (compile with POOL_PRIVATE flag) and now pgpool uses the
> pcp_stream.c function directly and no longer has the dependancy on the lib.
> 
> To make this new arrangement visible in pgpool source directory structure
> the patch rearranges the source code organisation and moves the
> pcp_stream.c and pcp_error.c files to src/utils/pcp from src/lib/pcp
> directory, while the pcp.c file still remains at its original directory.
> Also the new arrangement of code seems more naturally fit to the rest of
> pgppol-II source structure as other stream related functions also resides
> in src/utils directory.
> 
> --
> Thanks
> Muhammad Usama
> 
> 
> --
>> Tatsuo Ishii
>> SRA OSS, Inc. Japan
>> English: http://www.sraoss.co.jp/index_en.php
>> Japanese: http://www.sraoss.co.jp
>>
>> From: Muhammad Usama <m.usama at gmail.com>
>> Subject: Re: penultimate patch for exception and memory manager (
>> EXCEPTION_MGR branch)
>> Date: Tue, 11 Feb 2014 19:55:48 +0500
>> Message-ID: <
>> CAEJvTzWEjDWgtJ3HGCuaSwkGpXzWBETmrM4ShrA5tcNTQFvEuA at mail.gmail.com>
>>
>> > Hi Tatsuo
>> >
>> > I have rebased the EXCEPTION_MGR branch to current master, please find
>> the
>> > updated patch generated after rebasing.
>> >
>> > Thanks
>> > Muhammad Usama
>> >
>> >
>> > On Tue, Feb 11, 2014 at 11:17 AM, Tatsuo Ishii <ishii at postgresql.org>
>> wrote:
>> >
>> >> Usama,
>> >>
>> >> I have checked EXCEPTION_MGR branch and it seems it is far behind main
>> >> branch. The last patch brought to the EXCEPTION_MGR was dated
>> >> 2013/12/19. Can you please rebase the branch?
>> >>
>> >> Best regards,
>> >> --
>> >> Tatsuo Ishii
>> >> SRA OSS, Inc. Japan
>> >> English: http://www.sraoss.co.jp/index_en.php
>> >> Japanese: http://www.sraoss.co.jp
>> >>
>> >> From: Muhammad Usama <m.usama at gmail.com>
>> >> Subject: penultimate patch for exception and memory manager (
>> >> EXCEPTION_MGR branch)
>> >> Date: Mon, 10 Feb 2014 19:53:41 +0500
>> >> Message-ID: <CAEJvTzUZHKKHjz-ZvYaAsviwVVBKSoX-ByNq9rhANO1zPJYR=
>> >> w at mail.gmail.com>
>> >>
>> >> > Please find the penultimate patch for integration of memory and
>> exception
>> >> > manager APIs into pgpool.
>> >> > The patch is generated on the EXCEPTION_MGR development branch and
>> >> > integrates the said APIs in query processing portion of pgpool-II
>> code.
>> >> >
>> >> > Patch summary for review
>> >> > ======================
>> >> > The patch is very large mainly because of replacing of pool_error(),
>> >> > pool_debug() and pool_log() function calls to ereport(ERROR,..)
>> >> > ereport(DEBUG,..) and ereport(LOG,..) and it would be little time
>> >> consuming
>> >> > to review the patch. Although all the above also needs the thorough
>> >> review,
>> >> > as replacing pool_error() with ereport(ERROR) or ereport(FATAL) is
>> just
>> >> not
>> >> > a cosmetic but changes the flow of code, but there are few things,
>> that
>> >> > requires the more attention than others.
>> >> >
>> >> > Lifecycle of objects.
>> >> > ================
>> >> > Since with integration of memory manager, it is very important to
>> manage
>> >> > the life cycle of each object and making sure the object is created in
>> >> the
>> >> > proper MemoryContext. Here is the summary of some important objects
>> and
>> >> > their residences.
>> >> >
>> >> > Some Important Memory Contexts
>> >> > ============================
>> >> >
>> >> > ProcessLoopContext:
>> >> > This context resets at every main loop iteration of a process
>> >> >
>> >> > TopMemoryContext:
>> >> > This context is same as PostgreSQL's TopMemoryContext and lives for a
>> >> life
>> >> > time of process.
>> >> >
>> >> > ErrorContext:
>> >> > Same as PostgreSQL's ErrorContext and used for error processing.
>> >> >
>> >> > QueryContext:
>> >> > Used by pgpool child process and it lives for single query cycle.
>> >> >
>> >> >
>> >> > Lifecycle of Important Objects
>> >> > ========================
>> >> >
>> >> > SessionContext:
>> >> > The session context consists of a backend and frontend connection and
>> it
>> >> > lives for a single iteration of main child process loop.
>> >> > So the session context object is created in ProcessLoopContext.
>> >> >
>> >> > ProcessContext:
>> >> > ConnectionPool:
>> >> > BackendConnection:
>> >> > The above objects are required for the life of process hence are
>> created
>> >> in
>> >> > TopMemoryContext which lives throughout the process life time.
>> >> >
>> >> > Child Frontend connection:
>> >> > Frontend connection object is placed in the ProcessLoopContext since
>> new
>> >> > frontend connection is created at every main loop iteration of pgpool
>> >> child
>> >> > process.
>> >> >
>> >> > PCP Frontend connection:
>> >> > This object can live till the pcp process so the object for pcp
>> frontend
>> >> is
>> >> > created in TopMemoryContext.
>> >> >
>> >> > new configuration parameters
>> >> > ========================
>> >> >
>> >> > The patch also adds three new configuration parameters to control the
>> >> error
>> >> > reporting style and details.
>> >> > Parameters names and their behaviours are borrowed from PostgreSQL.
>> >> >
>> >> > int log_error_verbosity;    /* controls how much detail about error
>> >> should
>> >> > be emitted */
>> >> >
>> >> > int client_min_messages;    /*controls which message should be sent to
>> >> > client */
>> >> >
>> >> > int log_min_messages;       /*controls which message should be
>> emitted to
>> >> > server log */
>> >> >
>> >> >
>> >> > Some other notable changes introduced by the patch.
>> >> > ==========================================
>> >> >
>> >> > The patch changes the error reporting behaviour and now pgpool-II
>> tries
>> >> to
>> >> > send all the error and log messages to the connected frontend clients
>> >> > (controllable by "client_min_messages" configuration parameter ).
>> >> >
>> >> > The patch added an extra call back "on_system_exit" to the elog API,
>> >> which
>> >> > is not present in the PostgreSQL.
>> >> > The call back is called at system exit by elog API just before calling
>> >> the
>> >> > "on_shmem_exit" call backs.
>> >> > "on_system_exit" is a single call back and can be used to clean up
>> things
>> >> > which are dependent on shared memory.
>> >> >
>> >> > "repalloc()" behaviour in PostgreSQL palloc API is little different
>> from
>> >> > C-API counterpart "realloc()".
>> >> > ("realloc()" behaves as "malloc()" if ptr argument is NULL. While
>> >> > "repalloc()" does not works on NULL pointers)
>> >> > So I have changed the behaviour of "repalloc()" to make it more
>> >> consistent
>> >> > with C-API.
>> >> >
>> >> > The patch makes the libpcp exclusive for the tool binaries only
>> (compile
>> >> > with POOL_PRIVATE flag ). pgpool binary no longer has the dependancy
>> on
>> >> the
>> >> > lib, and uses the pcp_stream.c function directly.
>> >> > For this new arrangement the patch also rearranges the source code
>> >> > organisation and moves the pcp_stream.c and pcp_error.c files to
>> >> > src/utils/pcp directory from src/lib/pcp directory.
>> >> >
>> >> > What is still remaining.
>> >> > ==================
>> >> > 1- Need to decide the MemoryContext for memcache objects.
>> >> > 2- Watchdog and few rewrite function are still without the managers.
>> >> > 3- Replace all remaining occurrences of  pool_error, pool_debug, and
>> >> > pool_log with appropriate ereport() calls
>> >> > 4 -Code cleanup
>> >> >
>> >> > Reviews comments and suggestions are most welcome
>> >> >
>> >> > Thanks
>> >> > Usama
>> >>
>>
-------------- next part --------------
using pgpool-II at /home/t-ishii/work/git.postgresql.org/pgpool2/src/test/regression/temp/installed
*************************
REGRESSION MODE : install
PGPOOL-II       : /home/t-ishii/work/git.postgresql.org/pgpool2/src/test/regression/temp/installed
PostgreSQL bin  : /usr/local/pgsql/bin
pgbench         : /usr/local/pgsql/bin/pgbench
PostgreSQL jdbc : /usr/local/pgsql/share/postgresql-9.2-1003.jdbc4.jar
*************************
testing 001.load_balance...ok.
testing 002.native_replication...ok.
testing 003.failover...*** glibc detected *** pgpool: worker process: free(): invalid pointer: 0x00000000007756c8 ***
======= Backtrace: =========
/lib64/libc.so.6(+0x763b6)[0x7fd2922cf3b6]
pgpool: worker process[0x41d1ff]
pgpool: worker process[0x436363]
pgpool: worker process[0x436615]
pgpool: worker process[0x405e94]
pgpool: worker process[0x4072bf]
pgpool: worker process[0x407425]
pgpool: worker process[0x408d01]
pgpool: worker process[0x404ef8]
/lib64/libc.so.6(__libc_start_main+0xfd)[0x7fd292277b1d]
pgpool: worker process[0x4040e9]
======= Memory map: ========
00400000-0050c000 r-xp 00000000 08:05 2635374                            /home/t-ishii/work/git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool
0070c000-0070e000 rw-p 0010c000 08:05 2635374                            /home/t-ishii/work/git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool
0070e000-00795000 rw-p 00000000 00:00 0                                  [heap]
7fd29044d000-7fd290463000 r-xp 00000000 08:05 1704093                    /lib64/libgcc_s-4.4.5.so.1
7fd290463000-7fd290662000 ---p 00016000 08:05 1704093                    /lib64/libgcc_s-4.4.5.so.1
7fd290662000-7fd290663000 rw-p 00015000 08:05 1704093                    /lib64/libgcc_s-4.4.5.so.1
7fd290663000-7fd290883000 rw-s 00000000 00:04 61898777                   /SYSV00000000 (deleted)
7fd290883000-7fd29088f000 r-xp 00000000 08:05 1704191                    /lib64/libnss_files-2.11.1.so
7fd29088f000-7fd290a8e000 ---p 0000c000 08:05 1704191                    /lib64/libnss_files-2.11.1.so
7fd290a8e000-7fd290a8f000 r--p 0000b000 08:05 1704191                    /lib64/libnss_files-2.11.1.so
7fd290a8f000-7fd290a90000 rw-p 0000c000 08:05 1704191                    /lib64/libnss_files-2.11.1.so
7fd290a90000-7fd290a92000 r-xp 00000000 08:05 1704176                    /lib64/libkeyutils-1.2.so
7fd290a92000-7fd290c91000 ---p 00002000 08:05 1704176                    /lib64/libkeyutils-1.2.so
7fd290c91000-7fd290c92000 rw-p 00001000 08:05 1704176                    /lib64/libkeyutils-1.2.so
7fd290c92000-7fd290c9a000 r-xp 00000000 08:05 1704181                    /lib64/libkrb5support.so.0.1
7fd290c9a000-7fd290e99000 ---p 00008000 08:05 1704181                    /lib64/libkrb5support.so.0.1
7fd290e99000-7fd290e9a000 rw-p 00007000 08:05 1704181                    /lib64/libkrb5support.so.0.1
7fd290e9a000-7fd290e9c000 r-xp 00000000 08:05 1704128                    /lib64/libdl-2.11.1.so
7fd290e9c000-7fd29109c000 ---p 00002000 08:05 1704128                    /lib64/libdl-2.11.1.so
7fd29109c000-7fd29109d000 r--p 00002000 08:05 1704128                    /lib64/libdl-2.11.1.so
7fd29109d000-7fd29109e000 rw-p 00003000 08:05 1704128                    /lib64/libdl-2.11.1.so
7fd29109e000-7fd2910c5000 r-xp 00000000 08:05 1704166                    /lib64/libk5crypto.so.3.1
7fd2910c5000-7fd2912c4000 ---p 00027000 08:05 1704166                    /lib64/libk5crypto.so.3.1
7fd2912c4000-7fd2912c6000 rw-p 00026000 08:05 1704166                    /lib64/libk5crypto.so.3.1
7fd2912c6000-7fd2912c9000 r-xp 00000000 08:05 1704103                    /lib64/libcom_err.so.2.1
7fd2912c9000-7fd2914c8000 ---p 00003000 08:05 1704103                    /lib64/libcom_err.so.2.1
7fd2914c8000-7fd2914c9000 rw-p 00002000 08:05 1704103                    /lib64/libcom_err.so.2.1
7fd2914c9000-7fd291597000 r-xp 00000000 08:05 1704179                    /lib64/libkrb5.so.3.3
7fd291597000-7fd291796000 ---p 000ce000 08:05 1704179                    /lib64/libkrb5.so.3.3
7fd291796000-7fd2917a1000 rw-p 000cd000 08:05 1704179                    /lib64/libkrb5.so.3.3
7fd2917a1000-7fd2917d9000 r-xp 00000000 08:05 1704152                    /lib64/libgssapi_krb5.so.2.2
7fd2917d9000-7fd2919d8000 ---p 00038000 08:05 1704152                    /lib64/libgssapi_krb5.so.2.2
7fd2919d8000-7fd2919da000 rw-p 00037000 08:05 1704152                    /lib64/libgssapi_krb5.so.2.2
7fd2919da000-7fd291a36000 r-xp 00000000 08:05 1970855                    /usr/lib64/libfreebl3.so
7fd291a36000-7fd291c35000 ---p 0005c000 08:05 1970855                    /usr/lib64/libfreebl3.so
7fd291c35000-7fd291c37000 rw-p 0005b000 08:05 1970855                    /usr/lib64/libfreebl3.so
7fd291c37000-7fd291c3b000 rw-p 00000000 00:00 0 
7fd291c3b000-7fd291dd1000 r-xp 00000000 08:05 1703939                    /lib64/libcrypto.so.1.0.0l
7fd291dd1000-7fd291fd0000 ---p 00196000 08:05 1703939                    /lib64/libcrypto.so.1.0.0l
7fd291fd0000-7fd291ff3000 rw-p 00195000 08:05 1703939                    /lib64/libcrypto.so.1.0.0l
7fd291ff3000-7fd291ff7000 rw-p 00000000 00:00 0 
7fd291ff7000-7fd292052000 r-xp 00000000 08:05 1703951                    /lib64/libssl.so.1.0.0l
7fd292052000-7fd292251000 ---p 0005b000 08:05 1703951                    /lib64/libssl.so.1.0.0l
7fd292251000-7fd292259000 rw-p 0005a000 08:05 1703951                    /lib64/libssl.so.1.0.0l
7fd292259000-7fd2923ca000 r-xp 00000000 08:05 1703946                    /lib64/libc-2.11.1.so
7fd2923ca000-7fd2925ca000 ---p 00171000 08:05 1703946                    /lib64/libc-2.11.1.so
7fd2925ca000-7fd2925ce000 r--p 00171000 08:05 1703946                    /lib64/libc-2.11.1.so
7fd2925ce000-7fd2925cf000 rw-p 00175000 08:05 1703946                    /lib64/libc-2.11.1.so
7fd2925cf000-7fd2925d4000 rw-p 00000000 00:00 0 
7fd2925d4000-7fd292656000 r-xp 00000000 08:05 1704182                    /lib64/libm-2.11.1.so
7fd292656000-7fd292855000 ---p 00082000 08:05 1704182                    /lib64/libm-2.11.1.so
7fd292855000-7fd292856000 r--p 00081000 08:05 1704182                    /lib64/libm-2.11.1.so
7fd292856000-7fd292857000 rw-p 00082000 08:05 1704182                    /lib64/libm-2.11.1.so
7fd292857000-7fd29286d000 r-xp 00000000 08:05 1704185                    /lib64/libnsl-2.11.1.so
7fd29286d000-7fd292a6c000 ---p 00016000 08:05 1704185                    /lib64/libnsl-2.11.1.so
7fd292a6c000-7fd292a6d000 r--p 00015000 08:05 1704185                    /lib64/libnsl-2.11.1.so
7fd292a6d000-7fd292a6e000 rw-p 00016000 08:05 1704185                    /lib64/libnsl-2.11.1.so
7fd292a6e000-7fd292a70000 rw-p 00000000 00:00 0 
7fd292a70000-7fd292a86000 r-xp 00000000 08:05 1704202                    /lib64/libresolv-2.11.1.so
7fd292a86000-7fd292c85000 ---p 00016000 08:05 1704202                    /lib64/libresolv-2.11.1.so
7fd292c85000-7fd292c86000 r--p 00015000 08:05 1704202                    /lib64/libresolv-2.11.1.so
7fd292c86000-7fd292c87000 rw-p 00016000 08:05 1704202                    /lib64/libresolv-2.11.1.so
7fd292c87000-7fd292c89000 rw-p 00000000 00:00 0 
7fd292c89000-7fd292c90000 r-xp 00000000 08:05 1703950                    /lib64/libcrypt-2.11.1.so
7fd292c90000-7fd292e90000 ---p 00007000 08:05 1703950                    /lib64/libcrypt-2.11.1.so
7fd292e90000-7fd292e91000 r--p 00007000 08:05 1703950                    /lib64/libcrypt-2.11.1.so
7fd292e91000-7fd292e92000 rw-p 00008000 08:05 1703950                    /lib64/libcrypt-2.11.1.so
7fd292e92000-7fd292ec0000 rw-p 00000000 00:00 0 
7fd292ec0000-7fd292ed7000 r-xp 00000000 08:05 1703970                    /lib64/libpthread-2.11.1.so
7fd292ed7000-7fd2930d6000 ---p 00017000 08:05 1703970                    /lib64/libpthread-2.11.1.so
7fd2930d6000-7fd2930d7000 r--p 00016000 08:05 1703970                    /lib64/libpthread-2.11.1.so
7fd2930d7000-7fd2930d8000 rw-p 00017000 08:05 1703970                    /lib64/libpthread-2.11.1.so
7fd2930d8000-7fd2930dc000 rw-p 00000000 00:00 0 
7fd2930fb000-7fd293102000 r-xp 00000000 08:05 2635363                    /home/t-ishii/work/git.postgresql.org/pgpool2/src/test/regression/temp/installed/lib/libpcp.so.0.0.0
7fd293102000-7fd293302000 ---p 00007000 08:05 2635363                    /home/t-ishii/work/git.postgresql.org/pgpool2/src/test/regression/temp/installed/lib/libpcp.so.0.0.0
7fd293302000-7fd293303000 rw-p 00007000 08:05 2635363                    /home/t-ishii/work/git.postgresql.org/pgpool2/src/test/regression/temp/installed/lib/libpcp.so.0.0.0
7fd293303000-7fd29332b000 r-xp 00000000 08:05 2004750                    /usr/local/pgsql/lib/libpq.so.5.6
7fd29332b000-7fd29352a000 ---p 00028000 08:05 2004750                    /usr/local/pgsql/lib/libpq.so.5.6
7fd29352a000-7fd29352d000 rw-p 00027000 08:05 2004750                    /usr/local/pgsql/lib/libpq.so.5.6
7fd29352d000-7fd29354b000 r-xp 00000000 08:05 1703940                    /lib64/ld-2.11.1.so
7fd29372e000-7fd29372f000 rw-s 00000000 00:04 61997084                   /SYSV00000000 (deleted)
7fd29372f000-7fd293730000 rw-s 00000000 00:04 61964315                   /SYSV00000000 (deleted)
7fd293730000-7fd293731000 rw-s 00000000 00:04 61931546                   /SYSV00000000 (deleted)
7fd293731000-7fd29373f000 rw-s 00000000 00:04 61866007                   /SYSV00000000 (deleted)
7fd29373f000-7fd29374a000 rw-p 00000000 00:00 0 
7fd29374a000-7fd29374b000 r--p 0001d000 08:05 1703940                    /lib64/ld-2.11.1.so
7fd29374b000-7fd29374c000 rw-p 0001e000 08:05 1703940                    /lib64/ld-2.11.1.so
7fd29374c000-7fd29374d000 rw-p 00000000 00:00 0 
7fffb3324000-7fffb3345000 rw-p 00000000 00:00 0                          [stack]
7fffb33ff000-7fffb3400000 r-xp 00000000 00:00 0                          [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0                  [vsyscall]
*** glibc detected *** pgpool: worker process: free(): invalid pointer: 0x00000000007756c8 ***
======= Backtrace: =========
/lib64/libc.so.6(+0x763b6)[0x7fd2922cf3b6]
pgpool: worker process[0x41d1ff]
pgpool: worker process[0x436363]
pgpool: worker process[0x436615]
pgpool: worker process[0x405e94]
pgpool: worker process[0x4072bf]
pgpool: worker process[0x407425]
pgpool: worker process[0x408d01]
pgpool: worker process[0x404ef8]
/lib64/libc.so.6(__libc_start_main+0xfd)[0x7fd292277b1d]
pgpool: worker process[0x4040e9]
======= Memory map: ========
00400000-0050c000 r-xp 00000000 08:05 2635374                            /home/t-ishii/work/git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool
0070c000-0070e000 rw-p 0010c000 08:05 2635374                            /home/t-ishii/work/git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool
0070e000-00795000 rw-p 00000000 00:00 0                                  [heap]
7fd29044d000-7fd290463000 r-xp 00000000 08:05 1704093                    /lib64/libgcc_s-4.4.5.so.1
7fd290463000-7fd290662000 ---p 00016000 08:05 1704093                    /lib64/libgcc_s-4.4.5.so.1
7fd290662000-7fd290663000 rw-p 00015000 08:05 1704093                    /lib64/libgcc_s-4.4.5.so.1
7fd290663000-7fd290883000 rw-s 00000000 00:04 61898777                   /SYSV00000000 (deleted)
7fd290883000-7fd29088f000 r-xp 00000000 08:05 1704191                    /lib64/libnss_files-2.11.1.so
7fd29088f000-7fd290a8e000 ---p 0000c000 08:05 1704191                    /lib64/libnss_files-2.11.1.so
7fd290a8e000-7fd290a8f000 r--p 0000b000 08:05 1704191                    /lib64/libnss_files-2.11.1.so
7fd290a8f000-7fd290a90000 rw-p 0000c000 08:05 1704191                    /lib64/libnss_files-2.11.1.so
7fd290a90000-7fd290a92000 r-xp 00000000 08:05 1704176                    /lib64/libkeyutils-1.2.so
7fd290a92000-7fd290c91000 ---p 00002000 08:05 1704176                    /lib64/libkeyutils-1.2.so
7fd290c91000-7fd290c92000 rw-p 00001000 08:05 1704176                    /lib64/libkeyutils-1.2.so
7fd290c92000-7fd290c9a000 r-xp 00000000 08:05 1704181                    /lib64/libkrb5support.so.0.1
7fd290c9a000-7fd290e99000 ---p 00008000 08:05 1704181                    /lib64/libkrb5support.so.0.1
7fd290e99000-7fd290e9a000 rw-p 00007000 08:05 1704181                   ok.
testing 004.watchdog...ok.
testing 005.jdbc...ok.
testing 006.memqcache...ok.
testing 050.bug58...ok.
testing 051.bug60...ok.
testing 052.do_query...ok.
testing 053.insert_lock_hangs...ok.
testing 054.postgres_fdw...ok.
testing 055.backend_all_down...*** glibc detected *** /home/t-ishii/work/git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool: double free or corruption (!prev): 0x000000000075c050 ***
*** glibc detected *** pgpool: worker process: double free or corruption (!prev): 0x000000000075d490 ***
======= Backtrace: =========
/lib64/libc.so.6(+0x763b6)[0x7f0dca1f93b6]
/home/t-ishii/work/git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool[0x41d1ff]
/home/t-ishii/work/git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool[0x4058a7]
/home/t-ishii/work/git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool[0x40882f]
/home/t-ishii/work/git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool[0x404ef8]
======= Backtrace: =========
/lib64/libc.so.6(__libc_start_main+0xfd)[0x7f0dca1a1b1d]
/home/t-ishii/work/git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool[0x4040e9]
pgpool: worker process======= Memory map: ========
/lib64/libc.so.6(__libc_start_main+0xfd)[0x7f0dca1a1b1d]
pgpool: worker process[0x4040e9]
======= Memory map: ========
00400000-0050c000 r-xp 00000000 08:05 2635374                            /home/t-ishii/work/git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool
0070c000-0070e000 rw-p 0010c000 08:05 2635374                            /home/t-ishii/work/git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool
0070e000-00771000 rw-p 00000000 00:00 0                                  [heap]
7f0dc8377000-7f0dc838d000 r-xp 00000000 08:05 1704093                    /lib64/libgcc_s-4.4.5.so.1
7f0dc838d000-7f0dc858c000 ---p 00016000 08:05 1704093                    /lib64/libgcc_s-4.4.5.so.1
7f0dc858c000-7f0dc858d000 rw-p 00015000 08:05 1704093                    /lib64/libgcc_s-4.4.5.so.1
7f0dc858d000-7f0dc87ad000 rw-s 00000000 00:04 84148247                   /SYSV00000000 (deleted)
7f0dc87ad000-7f0dc87b9000 r-xp 00000000 08:05 1704191                    /lib64/libnss_files-2.11.1.so
7f0dc87b9000-7f0dc89b8000 ---p 0000c000 08:05 1704191                    /lib64/libnss_files-2.11.1.so
7f0dc89b8000-7f0dc89b9000 r--p 0000b000 08:05 1704191                    /lib64/libnss_files-2.11.1.so
7f0dc89b9000-7f0dc89ba000 rw-p 0000c000 08:05 1704191                    /lib64/libnss_files-2.11.1.so
7f0dc89ba000-7f0dc89bc000 r-xp 00000000 08:05 1704176                    /lib64/libkeyutils-1.2.so
7f0dc89bc000-7f0dc8bbb000 ---p 00002000 08:05 1704176                    /lib64/libkeyutils-1.2.so
7f0dc8bbb000-7f0dc8bbc000 rw-p 00001000 08:05 1704176                    /lib64/libkeyutils-1.2.so
7f0dc8bbc000-7f0dc8bc4000 r-xp 00000000 08:05 1704181                    /lib64/libkrb5support.so.0.1
7f0dc8bc4000-7f0dc8dc3000 ---p 00008000 08:05 1704181                    /lib64/libkrb5support.so.0.1
7f0dc8dc3000-7f0dc8dc4000 rw-p 00007000 08:05 1704181                    /lib64/libkrb5support.so.0.1
7f0dc8dc4000-7f0dc8dc6000 r-xp 00000000 08:05 1704128                    /lib64/libdl-2.11.1.so
7f0dc8dc6000-7f0dc8fc6000 ---p 00002000 08:05 1704128                    /lib64/libdl-2.11.1.so
7f0dc8fc6000-7f0dc8fc7000 r--p 00002000 08:05 1704128                    /lib64/libdl-2.11.1.so
7f0dc8fc7000-7f0dc8fc8000 rw-p 00003000 08:05 1704128                    /lib64/libdl-2.11.1.so
7f0dc8fc8000-7f0dc8fef000 r-xp 00000000 08:05 1704166                    /lib64/libk5crypto.so.3.1
7f0dc8fef000-7f0dc91ee000 ---p 00027000 08:05 1704166                    /lib64/libk5crypto.so.3.1
7f0dc91ee000-7f0dc91f0000 rw-p 00026000 08:05 1704166                    /lib64/libk5crypto.so.3.1
7f0dc91f0000-7f0dc91f3000 r-xp 00000000 08:05 1704103                    /lib64/libcom_err.so.2.1
7f0dc91f3000-7f0dc93f2000 ---p 00003000 08:05 1704103                    /lib64/libcom_err.so.2.1
7f0dc93f2000-7f0dc93f3000 rw-p 00002000 08:05 1704103                    /lib64/libcom_err.so.2.1
7f0dc93f3000-7f0dc94c1000 r-xp 00000000 08:05 1704179                    /lib64/libkrb5.so.3.3
7f0dc94c1000-7f0dc96c0000 ---p 000ce000 08:05 1704179                    /lib64/libkrb5.so.3.3
7f0dc96c0000-7f0dc96cb000 rw-p 000cd000 08:05 1704179                    /lib64/libkrb5.so.3.3
7f0dc96cb000-7f0dc9703000 r-xp 00000000 08:05 1704152                    /lib64/libgssapi_krb5.so.2.2
7f0dc9703000-7f0dc9902000 ---p 00038000 08:05 1704152                    /lib64/libgssapi_krb5.so.2.2
7f0dc9902000-7f0dc9904000 rw-p 00037000 08:05 1704152                    /lib64/libgssapi_krb5.so.2.2
7f0dc9904000-7f0dc9960000 r-xp 00000000 08:05 1970855                    /usr/lib64/libfreebl3.so
7f0dc9960000-7f0dc9b5f000 ---p 0005c000 08:05 1970855                    /usr/lib64/libfreebl3.so
7f0dc9b5f000-7f0dc9b61000 rw-p 0005b000 08:05 1970855                    /usr/lib64/libfreebl3.so
7f0dc9b61000-7f0dc9b65000 rw-p 00000000 00:00 0 
7f0dc9b65000-7f0dc9cfb000 r-xp 00000000 08:05 1703939                    /lib64/libcrypto.so.1.0.0l
7f0dc9cfb000-7f0dc9efa000 ---p 00196000 08:05 1703939                    /lib64/libcrypto.so.1.0.0l
7f0dc9efa000-7f0dc9f1d000 rw-p 00195000 08:05 1703939                    /lib64/libcrypto.so.1.0.0l
7f0dc9f1d000-7f0dc9f21000 rw-p 00000000 00:00 0 
7f0dc9f21000-7f0dc9f7c000 r-xp 00000000 08:05 1703951                    /lib64/libssl.so.1.0.0l
7f0dc9f7c000-7f0dca17b000 ---p 0005b000 08:05 1703951                    /lib64/libssl.so.1.0.0l
7f0dca17b000-7f0dca183000 rw-p 0005a000 08:05 1703951                    /lib64/libssl.so.1.0.0l
7f0dca183000-7f0dca2f4000 r-xp 00000000 08:05 1703946                    /lib64/libc-2.11.1.so
7f0dca2f4000-7f0dca4f4000 ---p 00171000 08:05 1703946                    /lib64/libc-2.11.1.so
7f0dca4f4000-7f0dca4f8000 r--p 00171000 08:05 1703946                    /lib64/libc-2.11.1.so
7f0dca4f8000-7f0dca4f9000 rw-p 00175000 08:05 1703946                    /lib64/libc-2.11.1.so
7f0dca4f9000-7f0dca4fe000 rw-p 00000000 00:00 0 
7f0dca4fe000-7f0dca580000 r-xp 00000000 08:05 1704182                    /lib64/libm-2.11.1.so
7f0dca580000-7f0dca77f000 ---p 00082000 08:05 1704182                    /lib64/libm-2.11.1.so
7f0dca77f000-7f0dca780000 r--p 00081000 08:05 1704182                    /lib64/libm-2.11.1.so
7f0dca780000-7f0dca781000 rw-p 00082000 08:05 1704182                    /lib64/libm-2.11.1.so
7f0dca781000-7f0dca797000 r-xp 00000000 08:05 1704185                    /lib64/libnsl-2.11.1.so
7f0dca797000-7f0dca996000 ---p 00016000 08:05 1704185                    /lib64/libnsl-2.11.1.so
7f0dca996000-7f0dca997000 r--p 00015000 08:05 1704185                    /lib64/libnsl-2.11.1.so
7f0dca997000-7f0dca998000 rw-p 00016000 08:05 1704185                    /lib64/libnsl-2.11.1.so
7f0dca998000-7f0dca99a000 rw-p 00000000 00:00 0 
7f0dca99a000-7f0dca9b0000 r-xp 00000000 08:05 1704202                    /lib64/libresolv-2.11.1.so
7f0dca9b0000-7f0dcabaf000 ---p 00016000 08:05 1704202                    /lib64/libresolv-2.11.1.so
7f0dcabaf000-7f0dcabb0000 r--p 00015000 08:05 1704202                    /lib64/libresolv-2.11.1.so
7f0dcabb0000-7f0dcabb1000 rw-p 00016000 08:05 1704202                    /lib64/libresolv-2.11.1.so
7f0dcabb1000-7f0dcabb3000 rw-p 00000000 00:00 0 
7f0dcabb3000-7f0dcabba000 r-xp 00000000 08:05 1703950                    /lib64/libcrypt-2.11.1.so
7f0dcabba000-7f0dcadba000 ---p 00007000 08:05 1703950                    /lib64/libcrypt-2.11.1.so
7f0dcadba000-7f0dcadbb000 r--p 00007000 08:05 1703950                    /lib64/libcrypt-2.11.1.so
7f0dcadbb000-7f0dcadbc000 rw-p 00008000 08:05 1703950                    /lib64/libcrypt-2.11.1.so
7f0dcadbc000-7f0dcadea000 rw-p 00000000 00:00 0 
7f0dcadea000-7f0dcae01000 r-xp 00000000 08:05 1703970                    /lib64/libpthread-2.11.1.so
7f0dcae01000-7f0dcb000000 ---p 00017000 08:05 1703970                    /lib64/libpthread-2.11.1.so
7f0dcb000000-7f0dcb001000 r--p 00016000 08:05 1703970                    /lib64/libpthread-2.11.1.so
7f0dcb001000-7f0dcb002000 rw-p 00017000 08:05 1703970                    /lib64/libpthread-2.11.1.so
7f0dcb002000-7f0dcb006000 rw-p 00000000 00:00 0 
7f0dcb025000-7f0dcb02c000 r-xp 00000000 08:05 2635363                    /home/t-ishii/work/git.postgresql.org/pgpool2/src/test/regression/temp/installed/lib/libpcp.so.0.0.0
7f0dcb02c000-7f0dcb22c000 ---p 00007000 08:05 2635363                    /home/t-ishii/work/git.postgresql.org/pgpool2/src/test/regression/temp/installed/lib/libpcp.so.0.0.0
7f0dcb22c000-7f0dcb22d000 rw-p 00007000 08:05 2635363                    /home/t-ishii/work/git.postgresql.org/pgpool2/src/test/regression/temp/installed/lib/libpcp.so.0.0.0
7f0dcb22d000-7f0dcb255000 r-xp 00000000 08:05 2004750                    /usr/local/pgsql/lib/libpq.so.5.6
7f0dcb255000-7f0dcb454000 ---p 00028000 08:05 2004750                    /usr/local/pgsql/lib/libpq.so.5.6
7f0dcb454000-7f0dcb457000 rw-p 00027000 08:05 2004750                    /usr/local/pgsql/lib/libpq.so.5.6
7f0dcb457000-7f0dcb475000 r-xp 00000000 08:05 1703940                    /lib64/ld-2.11.1.so
7f0dcb658000-7f0dcb659000 rw-s 00000000 00:04 84246555                   /SYSV00000000 (deleted)
7f0dcb659000-7f0dcb65a000 rw-s 00000000 00:04 84213786                   /SYSV00000000 (deleted)
7f0dcb65a000-7f0dcb65b000 rw-s 00000000 00:04 84181017                   /SYSV00000000 (deleted)
7f0dcb65b000-7f0dcb669000 rw-s 00000000 00:04 84115478                   /SYSV00000000 (deleted)
7f0dcb669000-7f0dcb674000 rw-p 00000000 00:00 0 
7f0dcb674000-7f0dcb675000 r--p 0001d000 08:05 1703940                    /lib64/ld-2.11.1.so
7f0dcb675000-7f0dcb676000 rw-p 0001e000 08:05 1703940                    /lib64/ld-2.11.1.so
7f0dcb676000-7f0dcb677000 rw-p 00000000 00:00 0 
7fff746e1000-7fff74702000 rw-p 00000000 00:00 0                          [stack]
7fff747ff000-7fff74800000 r-xp 00000000 00:00 0                          [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0                  [vsyscall]
7fd290c92000-7fd290c9a000 r-xp 00000000 08:05 1704181                    /lib64/libkrb5support.so.0.1


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