<div dir="ltr">Hello,<div><br></div><div>I have pushed the fix for all supported branches.</div><div><br></div><div>Thanks</div><div>Best Regards</div><div>Muhammad Usama</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Mar 3, 2022 at 8:03 AM Tatsuo Ishii <<a href="mailto:ishii@sraoss.co.jp">ishii@sraoss.co.jp</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi Usama,<br>
<br>
Thank you!<br>
<br>
>> On 03-Mar-2022, at 4:51 AM, Tatsuo Ishii <<a href="mailto:ishii@sraoss.co.jp" target="_blank">ishii@sraoss.co.jp</a>> wrote:<br>
>> <br>
>> Not sure at this moment because the cause of the segfault is not known<br>
>> yet. Also it's not known how to reproduce the segfault. So I think<br>
>> more investigation is needed.<br>
> <br>
> Hi, <br>
> I have identified the issue and will push the fix in few hours after testing. I don’t think upgrading to 4.3 will help in this case <br>
> <br>
> Thanks <br>
>> <br>
>>> Thanks!<br>
>>> In the meantime, do you think that upgrading to 4.3 could solve the problem?<br>
>>> <br>
>>> Thank you<br>
>>> <br>
>>>> Il giorno mer 2 mar 2022 alle ore 14:51 Tatsuo Ishii <<a href="mailto:ishii@sraoss.co.jp" target="_blank">ishii@sraoss.co.jp</a>><br>
>>>> ha scritto:<br>
>>>> <br>
>>>> Ok, It seems the segfault occured in watchdog.<br>
>>>> <br>
>>>> Usama,<br>
>>>> Can you please take a look at this?<br>
>>>> <br>
>>>> Best reagards,<br>
>>>> --<br>
>>>> Tatsuo Ishii<br>
>>>> SRA OSS, Inc. Japan<br>
>>>> English: <a href="http://www.sraoss.co.jp/index_en.php" rel="noreferrer" target="_blank">http://www.sraoss.co.jp/index_en.php</a><br>
>>>> Japanese:<a href="http://www.sraoss.co.jp" rel="noreferrer" target="_blank">http://www.sraoss.co.jp</a><br>
>>>> <br>
>>>> From: shacky <<a href="mailto:shacky83@gmail.com" target="_blank">shacky83@gmail.com</a>><br>
>>>> Subject: Re: [pgpool-general: 8031] Re: PgPool-II 4.2.7: several segfaults<br>
>>>> on CentOS 8<br>
>>>> Date: Wed, 2 Mar 2022 12:57:50 +0100<br>
>>>> Message-ID: <CAPz3gm=<br>
>>>> <a href="mailto:wPi_FqSJpnN99gKFBtg0Lg-0x7RiqAPdytfqra8saYQ@mail.gmail.com" target="_blank">wPi_FqSJpnN99gKFBtg0Lg-0x7RiqAPdytfqra8saYQ@mail.gmail.com</a>><br>
>>>> <br>
>>>>> Here is the complete bt output:<br>
>>>>> <br>
>>>> ===================================================================================================<br>
>>>>> DEV root@proxy2-dev ~# gdb /usr/bin/pgpool<br>
>>>>> <br>
>>>> /root/pgpool-coredumps/core.pgpool.26.e120553488834d47bff3c72a21a9bba1.694540.1646129274000000<br>
>>>>> GNU gdb (GDB) Red Hat Enterprise Linux 8.2-16.el8<br>
>>>>> Copyright (C) 2018 Free Software Foundation, Inc.<br>
>>>>> License GPLv3+: GNU GPL version 3 or later <<br>
>>>> <a href="http://gnu.org/licenses/gpl.html" rel="noreferrer" target="_blank">http://gnu.org/licenses/gpl.html</a><br>
>>>>>> <br>
>>>>> This is free software: you are free to change and redistribute it.<br>
>>>>> There is NO WARRANTY, to the extent permitted by law.<br>
>>>>> Type "show copying" and "show warranty" for details.<br>
>>>>> This GDB was configured as "x86_64-redhat-linux-gnu".<br>
>>>>> Type "show configuration" for configuration details.<br>
>>>>> For bug reporting instructions, please see:<br>
>>>>> <<a href="http://www.gnu.org/software/gdb/bugs/" rel="noreferrer" target="_blank">http://www.gnu.org/software/gdb/bugs/</a>>.<br>
>>>>> Find the GDB manual and other documentation resources online at:<br>
>>>>> <<a href="http://www.gnu.org/software/gdb/documentation/" rel="noreferrer" target="_blank">http://www.gnu.org/software/gdb/documentation/</a>>.<br>
>>>>> <br>
>>>>> For help, type "help".<br>
>>>>> Type "apropos word" to search for commands related to "word"...<br>
>>>>> Reading symbols from /usr/bin/pgpool...Reading symbols from<br>
>>>>> /usr/lib/debug/usr/bin/pgpool-4.2.5-1pgdg.rhel8.x86_64.debug...done.<br>
>>>>> done.<br>
>>>>> <br>
>>>>> warning: Can't open file (null) during file-backed mapping note<br>
>>>> processing<br>
>>>>> [New LWP 694540]<br>
>>>>> [Thread debugging using libthread_db enabled]<br>
>>>>> Using host libthread_db library "/lib64/libthread_db.so.1".<br>
>>>>> Core was generated by `pgpool: watchdog '.<br>
>>>>> Program terminated with signal SIGSEGV, Segmentation fault.<br>
>>>>> #0 __strlen_sse2 () at ../sysdeps/x86_64/multiarch/../strlen.S:120<br>
>>>>> 120 movdqu (%rax), %xmm4<br>
>>>>> (gdb) bt<br>
>>>>> #0 __strlen_sse2 () at ../sysdeps/x86_64/multiarch/../strlen.S:120<br>
>>>>> #1 0x00007fe9b70ac0af in _IO_vfprintf_internal (s=s@entry<br>
>>>> =0x7ffdb575f7c0,<br>
>>>>> format=format@entry=0x55d3177fd2a8 "STATE MACHINE INVOKED WITH EVENT =<br>
>>>> %s<br>
>>>>> Current State = %s",<br>
>>>>> ap=ap@entry=0x7ffdb575f9b0) at vfprintf.c:1638<br>
>>>>> #2 0x00007fe9b7164bfd in ___vsnprintf_chk (s=s@entry=0x55d3177fd6b8<br>
>>>> "STATE<br>
>>>>> MACHINE INVOKED WITH EVENT = it has found us again", maxlen=<optimized<br>
>>>>> out>, maxlen@entry=1024,<br>
>>>>> flags=flags@entry=1, slen=slen@entry=18446744073709551615,<br>
>>>>> format=format@entry=0x55d3177fd2a8 "STATE MACHINE INVOKED WITH EVENT =<br>
>>>> %s<br>
>>>>> Current State = %s",<br>
>>>>> args=args@entry=0x7ffdb575f9b0) at vsnprintf_chk.c:63<br>
>>>>> #3 0x000055d316dc9013 in vsnprintf (__ap=0x7ffdb575f9b0,<br>
>>>>> __fmt=0x55d3177fd2a8 "STATE MACHINE INVOKED WITH EVENT = %s Current<br>
>>>> State =<br>
>>>>> %s", __n=1024,<br>
>>>>> __s=0x55d3177fd6b8 "STATE MACHINE INVOKED WITH EVENT = it has found<br>
>>>> us<br>
>>>>> again") at /usr/include/bits/stdio2.h:80<br>
>>>>> #4 pvsnprintf (buf=0x55d3177fd6b8 "STATE MACHINE INVOKED WITH EVENT = it<br>
>>>>> has found us again", len=len@entry=1024,<br>
>>>>> fmt=fmt@entry=0x55d3177fd2a8 "STATE MACHINE INVOKED WITH EVENT = %s<br>
>>>>> Current State = %s", args=args@entry=0x7ffdb575f9b0) at<br>
>>>> utils/psprintf.c:126<br>
>>>>> #5 0x000055d316e11eab in appendStringInfoVA (str=str@entry<br>
>>>> =0x7ffdb575f990,<br>
>>>>> fmt=fmt@entry=0x55d3177fd2a8 "STATE MACHINE INVOKED WITH EVENT = %s<br>
>>>> Current<br>
>>>>> State = %s",<br>
>>>>> args=args@entry=0x7ffdb575f9b0) at stringinfo.c:138<br>
>>>>> #6 0x000055d316ddeabf in errmsg (fmt=fmt@entry=0x55d316f577d0 "STATE<br>
>>>>> MACHINE INVOKED WITH EVENT = %s Current State = %s") at<br>
>>>>> ../../src/utils/error/elog.c:665<br>
>>>>> #7 0x000055d316e30c4b in watchdog_state_machine<br>
>>>>> (event=event@entry=WD_EVENT_I_AM_APPEARING_FOUND,<br>
>>>>> wdNode=wdNode@entry=0x55d3177fbcf8, pkt=pkt@entry=0x0,<br>
>>>>> clusterCommand=clusterCommand@entry=0x0) at watchdog.c:5394<br>
>>>>> #8 0x000055d316e34a7b in cluster_service_message_processor<br>
>>>>> (pkt=0x55d317804898, wdNode=0x55d3177fbcf8) at watchdog.c:4030<br>
>>>>> #9 standard_packet_processor (wdNode=wdNode@entry=0x55d3177fbcf8,<br>
>>>>> pkt=pkt@entry=0x55d317804898) at watchdog.c:4202<br>
>>>>> #10 0x000055d316e312cd in watchdog_state_machine_nw_isolation<br>
>>>>> (clusterCommand=<optimized out>, pkt=<optimized out>, wdNode=<optimized<br>
>>>>> out>, event=<optimized out>)<br>
>>>>> at watchdog.c:6458<br>
>>>>> #11 watchdog_state_machine (event=event@entry=WD_EVENT_PACKET_RCV,<br>
>>>>> wdNode=wdNode@entry=0x55d3177fbcf8, pkt=pkt@entry=0x55d317804898,<br>
>>>>> clusterCommand=clusterCommand@entry=0x0)<br>
>>>>> at watchdog.c:5561<br>
>>>>> #12 0x000055d316e38514 in read_sockets (rmask=rmask@entry<br>
>>>> =0x7ffdb57604e0,<br>
>>>>> pending_fds_count=pending_fds_count@entry=1) at watchdog.c:8207<br>
>>>>> #13 0x000055d316e3b04f in watchdog_main () at watchdog.c:3500<br>
>>>>> #14 0x000055d316e3bb81 in fork_watchdog_child () at watchdog.c:1127<br>
>>>>> #15 initialize_watchdog () at watchdog.c:625<br>
>>>>> #16 0x000055d316d73088 in reaper () at main/pgpool_main.c:2428<br>
>>>>> #17 0x000055d316d79e28 in PgpoolMain (discard_status=<optimized out>,<br>
>>>>> clear_memcache_oidmaps=<optimized out>) at main/pgpool_main.c:473<br>
>>>>> #18 0x000055d316d7053c in main (argc=<optimized out>,<br>
>>>> argv=0x7ffdb576d1b8)<br>
>>>>> at main/main.c:365<br>
>>>>> <br>
>>>> ===================================================================================================<br>
>>>>> <br>
>>>>> Thank you!<br>
>>>>> <br>
>>>>> Il giorno mer 2 mar 2022 alle ore 05:05 Tatsuo Ishii <<a href="mailto:ishii@sraoss.co.jp" target="_blank">ishii@sraoss.co.jp</a><br>
>>>>> <br>
>>>>> ha scritto:<br>
>>>>> <br>
>>>>>> Can you please share the result of gdb command "bt"? Otherwise we<br>
>>>>>> cannot figure out which place of pgpool is related to the problem.<br>
>>>>>> --<br>
>>>>>> Tatsuo Ishii<br>
>>>>>> SRA OSS, Inc. Japan<br>
>>>>>> English: <a href="http://www.sraoss.co.jp/index_en.php" rel="noreferrer" target="_blank">http://www.sraoss.co.jp/index_en.php</a><br>
>>>>>> Japanese:<a href="http://www.sraoss.co.jp" rel="noreferrer" target="_blank">http://www.sraoss.co.jp</a><br>
>>>>>> <br>
>>>>>>> This is the coredump of the segmentation fault happened on proxy2-dev:<br>
>>>>>>> <br>
>>>>>>> <br>
>>>>>> <br>
>>>> ===================================================================================================<br>
>>>>>>> DEV root@proxy2-dev /v/l/s/coredump# gdb /usr/bin/pgpool<br>
>>>>>>> <br>
>>>>>> <br>
>>>> /root/pgpool-coredumps/core.pgpool.26.e120553488834d47bff3c72a21a9bba1.694540.1646129274000000<br>
>>>>>>> GNU gdb (GDB) Red Hat Enterprise Linux 8.2-16.el8<br>
>>>>>>> Copyright (C) 2018 Free Software Foundation, Inc.<br>
>>>>>>> License GPLv3+: GNU GPL version 3 or later <<br>
>>>>>> <a href="http://gnu.org/licenses/gpl.html" rel="noreferrer" target="_blank">http://gnu.org/licenses/gpl.html</a><br>
>>>>>>>> <br>
>>>>>>> This is free software: you are free to change and redistribute it.<br>
>>>>>>> There is NO WARRANTY, to the extent permitted by law.<br>
>>>>>>> Type "show copying" and "show warranty" for details.<br>
>>>>>>> This GDB was configured as "x86_64-redhat-linux-gnu".<br>
>>>>>>> Type "show configuration" for configuration details.<br>
>>>>>>> For bug reporting instructions, please see:<br>
>>>>>>> <<a href="http://www.gnu.org/software/gdb/bugs/" rel="noreferrer" target="_blank">http://www.gnu.org/software/gdb/bugs/</a>>.<br>
>>>>>>> Find the GDB manual and other documentation resources online at:<br>
>>>>>>> <<a href="http://www.gnu.org/software/gdb/documentation/" rel="noreferrer" target="_blank">http://www.gnu.org/software/gdb/documentation/</a>>.<br>
>>>>>>> <br>
>>>>>>> For help, type "help".<br>
>>>>>>> Type "apropos word" to search for commands related to "word"...<br>
>>>>>>> Reading symbols from /usr/bin/pgpool...Reading symbols from<br>
>>>>>>> /usr/lib/debug/usr/bin/pgpool-4.2.5-1pgdg.rhel8.x86_64.debug...done.<br>
>>>>>>> done.<br>
>>>>>>> <br>
>>>>>>> warning: Can't open file (null) during file-backed mapping note<br>
>>>>>> processing<br>
>>>>>>> [New LWP 694540]<br>
>>>>>>> [Thread debugging using libthread_db enabled]<br>
>>>>>>> Using host libthread_db library "/lib64/libthread_db.so.1".<br>
>>>>>>> Core was generated by `pgpool: watchdog<br>
>>>> '.<br>
>>>>>>> Program terminated with signal SIGSEGV, Segmentation fault.<br>
>>>>>>> #0 __strlen_sse2 () at ../sysdeps/x86_64/multiarch/../strlen.S:120<br>
>>>>>>> 120 movdqu (%rax), %xmm4<br>
>>>>>>> <br>
>>>>>> <br>
>>>> ===================================================================================================<br>
>>>>>>> <br>
>>>>>>> Thanks.<br>
>>>>>>> <br>
>>>>>>> Il giorno mar 1 mar 2022 alle ore 17:39 shacky <<a href="mailto:shacky83@gmail.com" target="_blank">shacky83@gmail.com</a>><br>
>>>> ha<br>
>>>>>>> scritto:<br>
>>>>>>> <br>
>>>>>>>> Hi,<br>
>>>>>>>> I am experiencing many segfaults on PgPool-II 4.2.7 installed on two<br>
>>>>>>>> different environments (production and test).<br>
>>>>>>>> <br>
>>>>>>>> Each environment is composed by three different PgPool-II nodes<br>
>>>>>> configured<br>
>>>>>>>> in a PgPool-II watchdog cluster, and I am experiencing segfaults on<br>
>>>>>> every 6<br>
>>>>>>>> PgPool-II nodes.<br>
>>>>>>>> <br>
>>>>>>>> The 6 PgPool-II nodes are distributed on 4 different physical<br>
>>>> servers,<br>
>>>>>> so<br>
>>>>>>>> it's very unlikely that it's due to some hardware problems.<br>
>>>>>>>> <br>
>>>>>>>> These are the snippets of the segfaults notifications:<br>
>>>>>>>> <br>
>>>>>>>> <br>
>>>>>> <br>
>>>> ===================================================================================================<br>
>>>>>>>> DEV root@proxy1-dev ~# dmesg|grep pgpool<br>
>>>>>>>> [ 15.970081] pgpool[834]: segfault at 8 ip 00007fb6069f5d8a sp<br>
>>>>>>>> 00007fff848e7448 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7fb60695c000+1bc000]<br>
>>>>>>>> [ 17.672642] pgpool[1336]: segfault at 8 ip 00007fb6069f5d8a sp<br>
>>>>>>>> 00007fff848e73e8 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7fb60695c000+1bc000]<br>
>>>>>>>> <br>
>>>>>>>> DEV root@proxy2-dev ~# dmesg|grep pgpool<br>
>>>>>>>> [ 2109.530239] pgpool[848]: segfault at 8 ip 00007f372d024d8a sp<br>
>>>>>>>> 00007ffe5126c7d8 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7f372cf8b000+1bc000]<br>
>>>>>>>> [ 4752.698303] pgpool[22406]: segfault at 8 ip 00007fe9b70f3d8a sp<br>
>>>>>>>> 00007ffdb575f298 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7fe9b705a000+1bc000]<br>
>>>>>>>> [ 4761.219745] pgpool[22450]: segfault at 8 ip 00007fe9b70f3d8a sp<br>
>>>>>>>> 00007ffdb575f238 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7fe9b705a000+1bc000]<br>
>>>>>>>> [7089616.463274] pgpool[22568]: segfault at 8 ip 00007fe9b70f3d8a sp<br>
>>>>>>>> 00007ffdb575f208 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7fe9b705a000+1bc000]<br>
>>>>>>>> [7090394.285732] pgpool[661708]: segfault at 8 ip 00007fe9b70f3d8a sp<br>
>>>>>>>> 00007ffdb575f208 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7fe9b705a000+1bc000]<br>
>>>>>>>> [7090504.438435] pgpool[661929]: segfault at 8 ip 00007fe9b70f3d8a sp<br>
>>>>>>>> 00007ffdb575f208 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7fe9b705a000+1bc000]<br>
>>>>>>>> [7090528.565248] pgpool[661991]: segfault at 8 ip 00007fe9b70f3d8a sp<br>
>>>>>>>> 00007ffdb575f238 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7fe9b705a000+1bc000]<br>
>>>>>>>> <br>
>>>>>>>> DEV root@proxy3-dev ~# dmesg|grep pgpool<br>
>>>>>>>> [ 2085.795853] pgpool[879]: segfault at 8 ip 00007f9f45e57d8a sp<br>
>>>>>>>> 00007ffc605d6678 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7f9f45dbe000+1bc000]<br>
>>>>>>>> [7088526.747095] pgpool[20105]: segfault at 8 ip 00007f9f45e57d8a sp<br>
>>>>>>>> 00007ffc605d65e8 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7f9f45dbe000+1bc000]<br>
>>>>>>>> [7088528.639860] pgpool[946407]: segfault at 8 ip 00007f9f45e57d8a sp<br>
>>>>>>>> 00007ffc605d6618 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7f9f45dbe000+1bc000]<br>
>>>>>>>> [7089324.627060] pgpool[946415]: segfault at 8 ip 00007f9f45e57d8a sp<br>
>>>>>>>> 00007ffc605d6618 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7f9f45dbe000+1bc000]<br>
>>>>>>>> [7089384.787587] pgpool[946506]: segfault at 8 ip 00007f9f45e57d8a sp<br>
>>>>>>>> 00007ffc605d6618 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7f9f45dbe000+1bc000]<br>
>>>>>>>> [7089580.047313] pgpool[946521]: segfault at 8 ip 00007f9f45e57d8a sp<br>
>>>>>>>> 00007ffc605d6618 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7f9f45dbe000+1bc000]<br>
>>>>>>>> [7089591.340077] pgpool[946547]: segfault at 8 ip 00007f9f45e57d8a sp<br>
>>>>>>>> 00007ffc605d6618 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7f9f45dbe000+1bc000]<br>
>>>>>>>> [7089597.788270] pgpool[946556]: segfault at 8 ip 00007f9f45e57d8a sp<br>
>>>>>>>> 00007ffc605d6618 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7f9f45dbe000+1bc000]<br>
>>>>>>>> [7089614.064323] pgpool[946565]: segfault at 8 ip 00007f9f45e57d8a sp<br>
>>>>>>>> 00007ffc605d6618 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7f9f45dbe000+1bc000]<br>
>>>>>>>> [7090492.104936] pgpool[946574]: segfault at 8 ip 00007f9f45e57d8a sp<br>
>>>>>>>> 00007ffc605d65e8 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7f9f45dbe000+1bc000]<br>
>>>>>>>> [7090575.965820] pgpool[946743]: segfault at 8 ip 00007f9f45e57d8a sp<br>
>>>>>>>> 00007ffc605d6618 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7f9f45dbe000+1bc000]<br>
>>>>>>>> <br>
>>>>>>>> PROD root@proxy1-prod ~# dmesg|grep pgpool<br>
>>>>>>>> [ 6.631205] pgpool[814]: segfault at 8 ip 00007fe9729dbd8a sp<br>
>>>>>>>> 00007ffe7174ae88 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7fe972942000+1bc000]<br>
>>>>>>>> [ 17.054962] pgpool[1288]: segfault at 8 ip 00007fe9729dbd8a sp<br>
>>>>>>>> 00007ffe7174ae28 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7fe972942000+1bc000]<br>
>>>>>>>> [868124.710835] pgpool[1415]: segfault at 8 ip 00007fe9729dbd8a sp<br>
>>>>>>>> 00007ffe7174ae28 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7fe972942000+1bc000]<br>
>>>>>>>> [868127.082112] pgpool[1632535]: segfault at 8 ip 00007fe9729dbd8a sp<br>
>>>>>>>> 00007ffe7174ae28 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7fe972942000+1bc000]<br>
>>>>>>>> <br>
>>>>>>>> PROD root@proxy2-prod ~# dmesg|grep pgpool<br>
>>>>>>>> [ 16.783629] pgpool[835]: segfault at 8 ip 00007f5f87877d8a sp<br>
>>>>>>>> 00007ffe3d47eb08 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7f5f877de000+1bc000]<br>
>>>>>>>> [ 21.012660] pgpool[1381]: segfault at 8 ip 00007f5f87877d8a sp<br>
>>>>>>>> 00007ffe3d47eaa8 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7f5f877de000+1bc000]<br>
>>>>>>>> [ 1978.102123] pgpool[1400]: segfault at 8 ip 00007f5f87877d8a sp<br>
>>>>>>>> 00007ffe3d47eaa8 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7f5f877de000+1bc000]<br>
>>>>>>>> <br>
>>>>>>>> PROD root@proxy3-prod ~# dmesg|grep pgpool<br>
>>>>>>>> [ 13.567572] pgpool[826]: segfault at 8 ip 00007f4359c84d8a sp<br>
>>>>>>>> 00007fff04ddf008 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7f4359beb000+1bc000]<br>
>>>>>>>> [ 15.559884] pgpool[1384]: segfault at 8 ip 00007f4359c84d8a sp<br>
>>>>>>>> 00007fff04ddefa8 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7f4359beb000+1bc000]<br>
>>>>>>>> [1094174.197742] pgpool[1398]: segfault at 8 ip 00007f4359c84d8a sp<br>
>>>>>>>> 00007fff04ddef78 error 4 in <a href="http://libc-2.28.so" rel="noreferrer" target="_blank">libc-2.28.so</a>[7f4359beb000+1bc000]<br>
>>>>>>>> <br>
>>>>>>>> <br>
>>>>>> <br>
>>>> ===================================================================================================<br>
>>>>>>>> <br>
>>>>>>>> The operating system is CentOS 8 (fully updated) with these PgPool-II<br>
>>>>>>>> packages installed:<br>
>>>>>>>> <br>
>>>>>>>> <br>
>>>>>> <br>
>>>> ===================================================================================================<br>
>>>>>>>> PROD root@proxy3 ~# rpm -qa|grep -i pgpool<br>
>>>>>>>> pgpool-II-pg12-4.2.7-1pgdg.rhel8.x86_64<br>
>>>>>>>> pgpool-II-release-4.2-1.noarch<br>
>>>>>>>> <br>
>>>>>>>> <br>
>>>>>> <br>
>>>> ===================================================================================================<br>
>>>>>>>> <br>
>>>>>>>> Could you help me to understand what's going on, please?<br>
>>>>>>>> <br>
>>>>>>>> Thank you very much!<br>
>>>>>>>> Bye<br>
>>>>>>>> <br>
>>>>>> <br>
>>>> <br>
</blockquote></div>