exited on signal 11 xhprof

Question

I have a big problem. I installed php5 extension XHprof on server (Ubuntu 14.04), and when I try to use it I have the 502 Bad Gateway. Logs of nginx are empty, and in php-fpm log I have this:

[17-Jul-2017 19:20:25] WARNING: [pool www] child 8944 exited on signal 11 (SIGSEGV) after 16.428915 seconds from start

In my script I wrote this:

if( extension_loaded( 'xhprof' ) ){
    if( function_exists( 'xhprof_enable' ) ){
        xhprof_enable( XHPROF_FLAGS_CPU + XHPROF_FLAGS_MEMORY );
        echo 'OK!';
    }
}

If I comment line with xhprof_enable(), it prints OK! and works correctly. So extension xhprof loaded and function xhprof_enable() exists (available). And phpinfo() show that xhprof exists. What can I do? It is very important.

Sorry for my English :) I know it a bit.

Answer 1

It's a known issue see xhprof issue #45 and PHP bug #67997.

There's no official fix, the project seems to be inactive, it didn't had a release for over 4 years.

However you can workaround it by calling xhprof_enable() with XHPROF_FLAGS_NO_BUILTINS:

xhprof_enable(XHPROF_FLAGS_NO_BUILTINS);