Can you show me backtrace? $ gdb pgpool core-file (gdb)bt
I expect to get more usefull info because the core was generated by your pgpool binary. -- Tatsuo Ishii SRA OSS, Inc. Japan English: http://www.sraoss.co.jp/index_en.php Japanese: http://www.sraoss.co.jp > Hello! > > Could you please clarify what would be more useful info for further analysis? > Thanks, > > silvio > > > -----Original Message----- > From: Tatsuo Ishii [mailto:[email protected]] > Sent: 16. studeni 2011 2:03 > To: Silvio Svečnjak > Cc: [email protected] > Subject: Re: [Pgpool-general] FW: Child process was terminated by > segmentation fault > > Silvio, > > Thank you for sending cores. I got backtrace this: > > gdb .libs/pgpool ~/core-pgpool-11-0-0-20473-1321347122 > GNU gdb (GDB) 7.2 > Copyright (C) 2010 Free Software Foundation, Inc. > License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> > This is free software: you are free to change and redistribute it. > There is NO WARRANTY, to the extent permitted by law. Type "show copying" > and "show warranty" for details. > This GDB was configured as "x86_64-vine-linux". > For bug reporting instructions, please see: > <http://www.gnu.org/software/gdb/bugs/>... > Reading symbols from > /home/t-ishii/work/pgfoundry/pgpool-II-3.1/.libs/pgpool...done. > > warning: exec file is newer than core file. > [New Thread 20473] > Reading symbols from /lib64/ld-linux-x86-64.so.2...done. > Loaded symbols for /lib64/ld-linux-x86-64.so.2 > > warning: no loadable sections found in added symbol-file system-supplied DSO > at 0x7fff50f70000 > Core was generated by `pgpool: vcms'. > Program terminated with signal 11, Segmentation fault. > #0 0x00000000004626ef in core_yylex_init (ptr_yy_globals=0x100) at > scan.c:3444 > 3444 memset(*ptr_yy_globals,0x00,sizeof(struct yyguts_t)); > (gdb) bt > #0 0x00000000004626ef in core_yylex_init (ptr_yy_globals=0x100) at > scan.c:3444 > #1 0x00000000000000b2 in ?? () > #2 0x0000000000000050 in ?? () > #3 0x000000001c1978b0 in ?? () > #4 0x0000000000000000 in ?? () > (gdb) > > It seems the backtrace does not show too much usefull info. I think > this is because the stack frame was trashed badly by a overrun of > memory copy. I'm looking into the problem anyway but it would be great > if you or someone provide me more usefull info... > -- > Tatsuo Ishii > SRA OSS, Inc. Japan > English: http://www.sraoss.co.jp/index_en.php > Japanese: http://www.sraoss.co.jp > >> Thanks for your quick response. Dump/trace files are enclosed - I hope they >> contain the information you need - if not please let me know what else could >> help you. >> Regards, >> >> silvio >> >> >> >> >> -----Original Message----- >> From: Tatsuo Ishii [mailto:[email protected]] >> Sent: 14. studeni 2011 16:05 >> To: Silvio Svečnjak >> Cc: [email protected] >> Subject: Re: [Pgpool-general] FW: Child process was terminated by >> segmentation fault >> >>> We're using pgpool 3.1 with PostgreSQL 8.4.7 on RHEL 5.3 x64 where pgpool >>> is configured for replication only on 2 backends. Pgpool is used by a real >>> time java application which occasionally (without any visible pattern) >>> catches an exception (org.postgresql.util.PSQLException: An I/O error >>> occured while sending to the backend). >>> >>> >>> >>> We've determined that the exception is caused by pgpool as at the same time >>> pgpool records the following error: >>> >>> >>> >>> 2011-11-14 14:14:45 ERROR: pid 10783: Child process 10812 was terminated by >>> segmentation fault >>> >>> 2011-11-14 14:14:45 DEBUG: pid 10783: child 10812 exits with status 11 by >>> signal 11 >>> >>> >>> >>> Bigger chunk of log file is enclosed as well as the pgpool configuration >>> file. >>> >>> >>> >>> After some research on the mailing lists, I found that some patches have >>> been released for version 3.1 which may resolve the issue. So I downloaded >>> and deployed the latest stable release pgpool2-V3_1_STABLE-8b47d55, but it >>> didn't solve the problem. >>> >>> >>> >>> I would appreciate very much if someone could provide any help with this? >>> Thank you in advance, >> >> Can you take a core and show us the backtrace? It will be very helpfull. >> -- >> Tatsuo Ishii >> SRA OSS, Inc. Japan >> English: http://www.sraoss.co.jp/index_en.php >> Japanese: http://www.sraoss.co.jp _______________________________________________ Pgpool-general mailing list [email protected] http://pgfoundry.org/mailman/listinfo/pgpool-general
