Arch Linux

Description:
After my last update apache startet to throw segfaults when someone connected to the server.
So I did some debugging and ended up disabling http2 to keep the server working.

Additional info:
* package version(s)
** 4.11.7-1-ARCH
** extra/apache 2.4.26-1
** extra/nghttp2 1.23.1-1
** core/libnghttp2 1.23.1-1
** core/openssl 1.1.0.f-1
** core/glibc 2.25-5

* config and/or log files etc.
[code][core:notice] [pid XXXX] AH00052: child pid XXXX exit signal Segmentation fault (11)[/code]
[code]*** longjmp causes uninitialized stack frame ***: /usr/bin/httpd terminated
======= Backtrace: =========
/usr/lib/libc.so.6(+0x7254c)[0x7f4a7a10c54c]
/usr/lib/libc.so.6(__fortify_fail+0x37)[0x7f4a7a198307]
/usr/lib/libc.so.6(+0xfe20d)[0x7f4a7a19820d]
/usr/lib/libc.so.6(__longjmp_chk+0x2b)[0x7f4a7a19816b]
/etc/httpd/modules/libphp7.so(+0x10679f)[0x7f4a73a6e79f]
/usr/lib/php/modules/xdebug.so(xdebug_error_cb+0x74a)[0x7f4a6dc66bea]
/etc/httpd/modules/libphp7.so(zend_error_noreturn+0x254)[0x7f4a73a6de6d]
/etc/httpd/modules/libphp7.so(zend_throw_error+0x145)[0x7f4a73a6e3ce]
/etc/httpd/modules/libphp7.so(+0x36ca29)[0x7f4a73cd4a29]
/etc/httpd/modules/libphp7.so(zend_fetch_class_by_name+0x8e)[0x7f4a73cd734e]
/etc/httpd/modules/libphp7.so(+0x423847)[0x7f4a73d8b847]
/etc/httpd/modules/libphp7.so(execute_ex+0x3b)[0x7f4a73d3305b]
/usr/lib/php/modules/xdebug.so(xdebug_execute_ex+0x3a6)[0x7f4a6dc52256]
/etc/httpd/modules/libphp7.so(+0x4260b4)[0x7f4a73d8e0b4]
/etc/httpd/modules/libphp7.so(execute_ex+0x3b)[0x7f4a73d3305b]
/usr/lib/php/modules/xdebug.so(xdebug_execute_ex+0x3a6)[0x7f4a6dc52256]
/etc/httpd/modules/libphp7.so(+0x422ce4)[0x7f4a73d8ace4]
/etc/httpd/modules/libphp7.so(execute_ex+0x3b)[0x7f4a73d3305b]
/usr/lib/php/modules/xdebug.so(xdebug_execute_ex+0x3a6)[0x7f4a6dc52256]
/etc/httpd/modules/libphp7.so(+0x4266d4)[0x7f4a73d8e6d4]
/etc/httpd/modules/libphp7.so(execute_ex+0x3b)[0x7f4a73d3305b]
/usr/lib/php/modules/xdebug.so(xdebug_execute_ex+0x3a6)[0x7f4a6dc52256]
/etc/httpd/modules/libphp7.so(+0x423054)[0x7f4a73d8b054]
/etc/httpd/modules/libphp7.so(execute_ex+0x3b)[0x7f4a73d3305b]
/usr/lib/php/modules/xdebug.so(xdebug_execute_ex+0x3a6)[0x7f4a6dc52256]
/etc/httpd/modules/libphp7.so(zend_execute+0x198)[0x7f4a73d908d8]
/etc/httpd/modules/libphp7.so(zend_execute_scripts+0xe1)[0x7f4a73ce6c41]
/etc/httpd/modules/libphp7.so(php_execute_script+0x2c0)[0x7f4a73c80a00]
/etc/httpd/modules/libphp7.so(+0x42aa72)[0x7f4a73d92a72]
/usr/bin/httpd(ap_run_handler+0x40)[0x44be10]
/usr/bin/httpd(ap_invoke_handler+0x99)[0x44c389]
/usr/bin/httpd(ap_process_async_request+0x29b)[0x4614fb]
/usr/bin/httpd(ap_process_request+0x10)[0x4616c0]
/etc/httpd/modules/mod_http2.so(+0x26da6)[0x7f4a75e64da6]
/usr/bin/httpd(ap_run_process_connection+0x40)[0x4557f0]
/etc/httpd/modules/mod_http2.so(+0x281f7)[0x7f4a75e661f7]
/etc/httpd/modules/mod_http2.so(+0x2b5b6)[0x7f4a75e695b6]
/usr/lib/libpthread.so.0(+0x7297)[0x7f4a7a446297]
/usr/lib/libc.so.6(clone+0x3f)[0x7f4a7a1871ef][/code]

Steps to reproduce:

Enable HTTP2

httpd.conf:
[code]LoadModule http2_module modules/mod_http2.so
Protocols h2 http/1.1[/code]