child pid xxxx exit signal Segmentation fault (11)

[ViT]

Hi All,

I have 3 servers with identical configurations that have been running normally, but since yesterday they have been continuously experiencing Segmentation fault (11) errors. The websites sometimes load, and other times fail to respond.
OS: AlmaLinux 8.10
Apache: 2.4.62
PHP versions installed:
php1_mode=php-fpm
php1_release = 8.1
php2_release = 7.4
php3_release = 5.6
php4_release = 8.3

PHP Extensions:
php_imagick = yes
php_ioncube = yes
php_mcrypt = yes
php_opcache = yes
php_zend = yes

After that, I updated DirectAdmin to version 1.677 and all services to their latest versions, but the issue still persists.
Has anyone encountered this issue before or knows how to help?
Thanks in advance.


[Thu May 22 12:34:44.527808 2025] [core:notice] [pid 1566518:tid 1566518] AH00052: child pid 1792950 exit signal Segmentation fault (11)
[Thu May 22 12:35:28.660085 2025] [core:notice] [pid 1566518:tid 1566518] AH00052: child pid 1794465 exit signal Segmentation fault (11)
[Thu May 22 12:38:16.280679 2025] [core:notice] [pid 1566518:tid 1566518] AH00052: child pid 1801869 exit signal Segmentation fault (11)
[Thu May 22 12:41:22.991991 2025] [core:notice] [pid 1566518:tid 1566518] AH00052: child pid 1810109 exit signal Segmentation fault (11)
[Thu May 22 12:42:46.251049 2025] [core:notice] [pid 1566518:tid 1566518] AH00052: child pid 1812878 exit signal Segmentation fault (11)
[Thu May 22 12:44:38.624066 2025] [core:notice] [pid 1566518:tid 1566518] AH00052: child pid 1817218 exit signal Segmentation fault (11)
[Thu May 22 12:47:50.295540 2025] [core:notice] [pid 1566518:tid 1566518] AH00052: child pid 1824976 exit signal Segmentation fault (11)
[Thu May 22 12:49:25.569201 2025] [core:notice] [pid 1566518:tid 1566518] AH00052: child pid 1827974 exit signal Segmentation fault (11)
[Thu May 22 12:49:28.593792 2025] [core:notice] [pid 1566518:tid 1566518] AH00052: child pid 1828273 exit signal Segmentation fault (11)
realloc(): invalid old size
[Thu May 22 12:51:06.878881 2025] [core:notice] [pid 1566518:tid 1566518] AH00052: child pid 1831435 exit signal Aborted (6)
[Thu May 22 12:51:18.923329 2025] [core:notice] [pid 1566518:tid 1566518] AH00052: child pid 1831917 exit signal Segmentation fault (11)
[Thu May 22 12:52:37.174742 2025] [core:notice] [pid 1566518:tid 1566518] AH00052: child pid 1834702 exit signal Segmentation fault (11)
[Thu May 22 12:54:57.854242 2025] [core:notice] [pid 1566518:tid 1566518] AH00052: child pid 1842876 exit signal Segmentation fault (11)
[Thu May 22 12:55:11.944645 2025] [core:notice] [pid 1566518:tid 1566518] AH00052: child pid 1843963 exit signal Segmentation fault (11)
[Thu May 22 12:55:21.008690 2025] [core:notice] [pid 1566518:tid 1566518] AH00052: child pid 1844722 exit signal Segmentation fault (11)
double free or corruption (fasttop)

 

[zEitEr]

Hello,

You might and try and disable opcache, and see whether or not it helps.

php_opcache = yes

 

[ViT]

Hello,

You might and try and disable opcache, and see whether or not it helps.

Hi zEitEr,
I have disabled all PHP extensions and ran the following commands:
da build apache
da build php
da build rewrite_confs
However, the error exit signal Segmentation fault (11) still appears after checking.
I checked and saw an error related to the libpthread-2.28.so library, but I don't know how to fix it.
# dmesg | grep -i segfault
[36446289.139217] httpd[3614468]: segfault at 18 ip 00007f805e6c0336 sp 00007f7ff3ffe610 error 4 in libpthread-2.28.so[7f805e6b3000+1b000]

 

[zEitEr]

While I don't have a solution for this case, I could list some basic steps I would take to troubleshoot it.

You might try and grep more content from dmesg:

dmesg | grep -i segfault -C 10

- make sure you've got only single instance of the file:

find / -name libpthread-2.28.so

- and it has a size greater than zero:

ls -la /usr/lib64/libpthread-2.28.so
ldd /usr/lib64/libpthread-2.28.so

- check what glibc packages you have installed:

rpm -qa | grep glibc

- and try to re-install them

rpm -qa | grep ^glibc | xargs yum -y reinstall

- then check Apache:

ldd /usr/sbin/httpd