Public bug reported:
After updating php8.3-fpm:amd64...
from 8.3.6-0ubuntu0.24.04.6
to 8.3.6-0ubuntu0.24.04.7
...yesterday on my Ubuntu 24.04.4 LTS server, calling `fpm_get_status()`
crashes the FPM reproducibly.
I noticed this because I run a nextcloud and my monitoring checks the
`serverinfo` API endpoint, which - amongst other things - calls that
function. I've manually verified that this function call causes the
crash by creating a php file with following contents:
```
<?php
print_r(fpm_get_status());
```
...and then calling it through nginx.
To reproduce, I've checked on another 24.04 LTS box with nginx installed:
- apt install php-fpm
- I created /var/www/html/test.php with the same test call as above
- opening that page in a browser or with cURL has nginx throw a 502 Bad Gateway
and you can see a log entry in the FPM error log:
[16-Mar-2026 12:56:17] WARNING: [pool www] child 1427132 exited on
signal 11 (SIGSEGV - core dumped) after 0.200238 seconds from start
Also, `/var/crash/_usr_sbin_php-fpm8.3.33.crash` is being created.
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: php8.3-fpm 8.3.6-0ubuntu0.24.04.7
ProcVersionSignature: Ubuntu 6.8.0-106.106-generic 6.8.12
Uname: Linux 6.8.0-106-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
CasperMD5CheckResult: unknown
Date: Mon Mar 16 12:56:17 2026
InstallationDate: Installed on 2012-07-03 (5004 days ago)
InstallationMedia: Ubuntu-Server 12.04 LTS "Precise Pangolin" - Release amd64
(20120424.1)
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/zsh
TERM=xterm
SourcePackage: php8.3
UpgradeStatus: Upgraded to noble on 2024-12-06 (465 days ago)
modified.conffile..etc.php.8.3.fpm.pool.d.www.conf: [modified]
mtime.conffile..etc.php.8.3.fpm.pool.d.www.conf: 2024-12-06T01:36:56.270124
** Affects: php8.3 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble
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https://bugs.launchpad.net/bugs/2144556
Title:
php8.3-fpm: SIGSEGV upon fpm_get_status()
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