[Bug 268318] www/apache24 with www/mod_php8{0,1,2,3?}: opcache + ASLR turned on crashes Apache

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=268318

--- Comment #98 from Marián Černý <majo-bugs.freebsd.org@cerny.sk> ---
(In reply to Marián Černý from comment #97)

I take back my previous comment. Just disabling ASLR does not work for me. It
worked for few `service apache24 reload` calls, but then crashed at midnight
when rotating logs. Now it crashes even with `service apache24 reload`.

It was crashing with the following backtrace:

# lldb --core httpd-26294.core httpd
(lldb) target create "httpd" --core "httpd-26294.core"
Core file '/tmp/httpd-26294.core' (x86_64) was loaded.
(lldb) bt
* thread #1, name = 'httpd', stop reason = signal SIGSEGV
  * frame #0: 0x0000000801670f90 libgd.so.6
    frame #1: 0x00000008022b54f2 opcache.so`___lldb_unnamed_symbol1014 + 66
    frame #2: 0x0000000802877586 libphp.so`___lldb_unnamed_symbol8134 + 22
    frame #3: 0x0000000802858ee0 libphp.so`zend_llist_apply_with_del + 64
    frame #4: 0x00000008027f8d47 libphp.so`php_module_startup + 2343
    frame #5: 0x00000008029550e5 libphp.so`___lldb_unnamed_symbol9803 + 21
    frame #6: 0x00000008029548c6 libphp.so`___lldb_unnamed_symbol9798 + 118
    frame #7: 0x0000000000262271 httpd`ap_run_post_config + 81
    frame #8: 0x000000000025d8a5 httpd`main + 2421
    frame #9: 0x000000000025cd80 httpd`_start + 256

Moving LoadModule php_module to the top of the list seems to "fix" (workaround)
the crash.

Looks like some bogus pointers. Hard to tell who to blame. If i is a bug in
apache or PHP (opcache is a suspect). Would be great if somebody who has
experience with apache/PHP debugging on FreeBSD would have a look. I guess it
should not be so hard to pinpoint the issue when it is a reproducible problem.

I am on a path migrating from mod_php to php-fpm, however despite mod_php being
deprecated I do not think it should crash (e.g. the bug might still be present
there and cause different problems).

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