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Hello Xoopsers,
I manage a Xoops site since a long time ago, but now It has been moved to KnownHost hosting, in a package with LiteSpeed and MariaDB.
Home page works fine and some other content pages, but can't access admin area, it reports 503 Service Unavailable.
Support from hosting is asking about Ioncube, if Xoops use it and which version.
I installed a Xoops 2.5.9 for testing with PHP 5.6 and PHP 7.1.
Here is the report when tries to access /user.php:
2018-10-12 18:42:24.781 [STDERR] *** Error in `lsphp:/home/account/public_html/xoops/user.php': double free or corruption (fasttop): 0x00007fad4feeca70 ***
2018-10-12 18:42:24.781 [STDERR] ======= Backtrace: =========
2018-10-12 18:42:24.781 [STDERR] /lib64/libc.so.6(+0x7f574)[0x7fad4b0c5574]
2018-10-12 18:42:24.781 [STDERR] /lib64/libc.so.6(+0x84b5f)[0x7fad4b0cab5f]
2018-10-12 18:42:24.782 [STDERR] /lib64/libc.so.6(realloc+0x1b2)[0x7fad4b0cbe42]
/opt/cpanel/ea-php71/root/usr/lib64/php/modules/i360.so(+0xb6cb)[0x7fad3d27f6cb]
2018-10-12 18:42:24.782 [STDERR] /opt/cpanel/ea-php71/root/usr/lib64/php/modules/i360.so(map_increment_int_+0xa2)[0x7fad3d27f962]
/opt/cpanel/ea-php71/root/usr/lib64/php/modules/i360.so(set_anyop+0x1d)[0x7fad3d27efed]
/opt/cpanel/ea-php71/root/usr/lib64/php/modules/i360.so(zend_execute_internal_hook+0x175)[0x7fad3d27c745]
2018-10-12 18:42:24.782 [STDERR] lsphp:/home/account/public_html/xoops/user.php(+0x2d9ca0)[0x7fad4e2d9ca0]
2018-10-12 18:42:24.782 [STDERR] lsphp:/home/account/public_html/xoops/user.php(execute_ex+0x2b)[0x7fad4e28823b]
/opt/cpanel/ea-php71/root/usr/lib64/php/modules/ioncube_loader_lin_7.1.so(+0x85bcc)[0x7fad4a43dbcc]
2018-10-12 18:42:24.782 [STDERR] lsphp:/home/account/public_html/xoops/user.php(+0x2d9b35)[0x7fad4e2d9b35]
2018-10-12 18:42:24.782 [STDERR] lsphp:/home/account/public_html/xoops/user.php(execute_ex+0x2b)[0x7fad4e28823b]
2018-10-12 18:42:24.782 [STDERR] /opt/cpanel/ea-php71/root/usr/lib64/php/modules/ioncube_loader_lin_7.1.so(+0x85bcc)[0x7fad4a43dbcc]
2018-10-12 18:42:24.782 [STDERR] lsphp:/home/account/public_html/xoops/user.php(zend_call_function+0x791)[0x7fad4e230771]
2018-10-12 18:42:24.782 [STDERR] lsphp:/home/account/public_html/xoops/user.php(_call_user_function_ex+0x55)[0x7fad4e230bd5]
2018-10-12 18:42:24.782 [STDERR] lsphp:/home/account/public_html/xoops/user.php(+0x13d486)[0x7fad4e13d486]
2018-10-12 18:42:24.782 [STDERR] lsphp:/home/account/public_html/xoops/user.php(+0x13da46)[0x7fad4e13da46]
2018-10-12 18:42:24.782 [STDERR] lsphp:/home/account/public_html/xoops/user.php(+0x1374df)[0x7fad4e1374df]
2018-10-12 18:42:24.782 [STDERR] lsphp:/home/account/public_html/xoops/user.php(+0x1376d7)[0x7fad4e1376d7]
2018-10-12 18:42:24.782 [STDERR] lsphp:/home/account/public_html/xoops/user.php(zend_deactivate_modules+0x84)[0x7fad4e246e84]
2018-10-12 18:42:24.782 [STDERR] lsphp:/home/account/public_html/xoops/user.php(php_request_shutdown+0x3ed)[0x7fad4e1dc6fd]
2018-10-12 18:42:24.782 [STDERR] lsphp:/home/account/public_html/xoops/user.php(+0x2ddcd7)[0x7fad4e2ddcd7]
2018-10-12 18:42:24.782 [STDERR] lsphp:/home/account/public_html/xoops/user.php(+0x2dded6)[0x7fad4e2dded6]
2018-10-12 18:42:24.783 [STDERR] lsphp:/home/account/public_html/xoops/user.php(+0xbdb82)[0x7fad4e0bdb82]
2018-10-12 18:42:24.783 [STDERR] /lib64/libc.so.6(__libc_start_main+0xf5)[0x7fad4b0683d5]
2018-10-12 18:42:24.783 [STDERR] lsphp:/home/account/public_html/xoops/user.php(+0xbddf7)[0x7fad4e0bddf7]