My apache2 version:
Server version: Apache/2.4.18 (Ubuntu)
Server built: 2020-08-12T21:35:50
My php version:
PHP 7.3.7-1+ubuntu16.04.1+deb.sury.org+1 (cli) (built: Jul 10 2019 06:54:26) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.3.7, Copyright (c) 1998-2018 Zend Technologies
with Zend OPcache v7.3.7-1+ubuntu16.04.1+deb.sury.org+1, Copyright (c) 1999-2018, by Zend Technologies
My os version:
Distributor ID: Ubuntu
Description: Ubuntu 16.04.6 LTS
Release: 16.04
Codename: xenial
Hi, from last 2-3 months i have a lot of these segmentations(2-3 times per week);
[Wed Mar 09 10:47:12.150226 2022] [core:notice] [pid 21823] AH00051: child pid 22481 exit signal Segmentation fault (11), possible coredump in /etc/apache2
[Wed Mar 09 10:47:17.155792 2022] [core:notice] [pid 21823] AH00051: child pid 21895 exit signal Segmentation fault (11), possible coredump in /etc/apache2
[Wed Mar 09 10:47:24.163536 2022] [core:notice] [pid 21823] AH00051: child pid 22189 exit signal Segmentation fault (11), possible coredump in /etc/apache2
[Wed Mar 09 10:47:24.163618 2022] [core:notice] [pid 21823] AH00051: child pid 22562 exit signal Segmentation fault (11), possible coredump in /etc/apache2
[Wed Mar 09 10:47:25.164759 2022] [core:notice] [pid 21823] AH00051: child pid 22491 exit
...............
Every site on the server has an error with: "Secure Connection Failed" or "The Connection was reset"
After I restart apache2 everything is ok.
Before this error.. I had a lot of errors (that I do not remember the exact log messages) ... the apache2 requested to increase the number of servers/workers, so the only I made some modifications
/etc/apache2/mods-available/mpm_prefork.conf
<IfModule mpm_prefork_module>
ServerLimit 4000
StartServers 905
MinSpareServers 405
MaxSpareServers 420
MaxRequestWorkers 2000
MaxConnectionsPerChild 0
</IfModule>
Today with some tutorial and with the help of gdb... I did get some output of a segmentated apache2 process:
#0 0xb6324467 in ?? () from /usr/lib/php/20180731/opcache.so
No symbol table info available.
#1 0xb6322eac in ?? () from /usr/lib/php/20180731/opcache.so
No symbol table info available.
#2 0xb716baba in ?? () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#3 0xb71a4b92 in ?? () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#4 0xb71adaf3 in execute_ex () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#5 0xb71112cd in zend_call_function () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#6 0xb6fbffbf in ?? () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#7 0xb6fc1345 in ?? () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#8 0xb6fc154a in ?? () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#9 0xb6fc1b2a in ?? () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#10 0xb71a9f11 in execute_ex () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#11 0xb71112cd in zend_call_function () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#12 0xb6fbffbf in ?? () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#13 0xb6fc1345 in ?? () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#14 0xb6fc154a in ?? () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#15 0xb6fc1b2a in ?? () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#16 0xb71a9f11 in execute_ex () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#17 0xb71112cd in zend_call_function () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#18 0xb6fbffbf in ?? () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#19 0xb6fc1345 in ?? () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#20 0xb6fc154a in ?? () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#21 0xb6fc1b2a in ?? () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#22 0xb71a9f11 in execute_ex () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#23 0xb71112cd in zend_call_function () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#24 0xb6fbffbf in ?? () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#25 0xb6fc1345 in ?? () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#26 0xb6fc154a in ?? () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#27 0xb6fc1b2a in ?? () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#28 0xb71a9f11 in execute_ex () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#29 0xb71b22e4 in zend_execute () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#30 0xb711f5cd in zend_execute_scripts () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#31 0xb70bd52c in php_execute_script () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#32 0xb71b4729 in ?? () from /usr/lib/apache2/modules/libphp7.3.so
No symbol table info available.
#33 0x00545f27 in ap_run_handler (r=0xb0611058) at config.c:169
pHook = <optimized out>
n = 3
rv = -1
#34 0x0054649f in ap_invoke_handler (r=0xb0611058) at config.c:433
handler = <optimized out>
p = <optimized out>
result = <optimized out>
old_handler = 0xb48f4258 "application/x-httpd-php"
ignore = <optimized out>
#35 0x0055d5ff in ap_process_async_request (r=0xb0611058) at http_request.c:410
c = 0xb62f31f0
access_status = 0
#36 0x0055d7af in ap_process_request (r=0xb0611058) at http_request.c:445
bb = <optimized out>
b = <optimized out>
c = 0xb62f31f0
rv = <optimized out>
#37 0x0055989f in ap_process_http_sync_connection (c=0xb62f31f0) at http_core.c:210
keep_alive_timeout = 5000000
r = 0xb0611058
csd = 0x0
mpm_state = 0
#38 ap_process_http_connection (c=0xb62f31f0) at http_core.c:251
No locals.
#39 0x0054fd17 in ap_run_process_connection (c=0xb62f31f0) at connection.c:41
pHook = <optimized out>
n = 1
rv = -1
#40 0x00550183 in ap_process_connection (c=0xb62f31f0, csd=0xb62f3058) at connection.c:213
rc = <optimized out>
#41 0xb732ca8f in child_main (child_num_arg=child_num_arg@entry=649, child_bucket=child_bucket@entry=0) at prefork.c:723
current_conn = 0xb62f31f0
csd = 0xb62f3058
thd = 0xb6eff058
osthd = 3074316032
ptrans = 0xb62f3018
allocator = 0x1b435d0
status = <optimized out>
i = <optimized out>
lr = <optimized out>
pollset = 0xb6eff0c8
sbh = 0xb6eff0c0
bucket_alloc = 0xb6200018
last_poll_idx = 1
lockfile = <optimized out>
#42 0xb732ccd3 in make_child (s=<optimized out>, slot=slot@entry=649) at prefork.c:825
bucket = 0
pid = <optimized out>
#43 0xb732cd47 in startup_children (number_to_start=256, number_to_start@entry=905) at prefork.c:843
i = 649
#44 0xb732dced in prefork_run (_pconf=0xb76fe018, plog=0xb73bf018, s=0xb73c3f18) at prefork.c:1006
index = <optimized out>
remaining_children_to_start = 905
i = <optimized out>
#45 0x0052826f in ap_run_mpm (pconf=0xb76fe018, plog=0xb73bf018, s=0xb73c3f18) at mpm_common.c:94
pHook = <optimized out>
n = 0
rv = -1
#46 0x00520da3 in main (argc=3, argv=0xbfa0f494) at main.c:777
c = 0 '\000'
showcompile = <optimized out>
showdirectives = <optimized out>
confname = <optimized out>
def_server_root = <optimized out>
temp_error_log = <optimized out>
error = <optimized out>
process = 0xb76fe018
pconf = <optimized out>
plog = 0xb73bf018
ptemp = 0xb73c1018
pcommands = 0xb73c5018
opt = 0xb73c50b8
rv = <optimized out>
mod = <optimized out>
opt_arg = 0x4fd034 "\006"
signal_server = <optimized out>
P.S Sorry for my english.
Ivan Ionuț
Str. Săliște 20, Galati 800023
Tel/Fax: +40236 493277
Email: ivan.ionut@xxxxxxxxxxxxxx
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