Crashed with PHP errors - cannot enable

[pstvjb09]

On my specific Nextcloud AIO/ARM64 system, enabling it caused every PHP worker to crash with SIGSEGV. Disabling it and restarting restored the server.

[taydag79]

Can confirm the same issue on a non-ARM64 (x86_64) system, so this doesn't seem to be ARM64-specific.

Environment

• Nextcloud All-in-One (nextcloud/all-in-one:latest), Docker, x86_64
• Nextcloud 34.0.4.1
• PHP 8.4.25
• groupfolders updated from 21.0.11 to 22.0.6

Symptoms
Every PHP-FPM worker crashed with SIGSEGV within 1-5 minutes of enabling groupfolders 22.0.6:

[pool www] child 273 exited on signal 11 (SIGSEGV - core dumped) after 111.471272 seconds from start
[pool www] child 290 exited on signal 11 (SIGSEGV - core dumped) after 108.095017 seconds from start
[pool www] child 274 exited on signal 11 (SIGSEGV - core dumped) after 135.982617 seconds from start

Causing intermittent 503 "Service Unavailable" for the whole instance via Apache:
[error] [AH01067: Failed to read FastCGI header]
[error] [(104)Connection reset by peer] [AH01075: Error dispatching request to : ]

Confirmed not resource-related - checked during the crash window:

• RAM: 14GB+ available
• Load average: ~0.15
• Disk I/O: %util 0%

Workaround
occ app:disable groupfolders immediately stopped the crashes. No further SIGSEGV events since, verified over multiple hours including container restarts.

Happy to provide full logs or a gdb backtrace of the crashing PHP-FPM child if that would help narrow down the root cause.