php56-fpm się sypie

[Adam Osuchowski]

# service php56-fpm start 
Starting PHP FastCGI Process Manager (php56-fpm) service................................................................................................................................[ BUSY ]*** Error in `/usr/sbin/php56-fpm': free(): invalid pointer: 0x000002cf3de42080 ***
======= Backtrace: =========
/lib64/libc.so.6(+0x722ae)[0x2cf3b7332ae]
/lib64/libc.so.6(+0x7778e)[0x2cf3b73878e]
/lib64/libc.so.6(+0x77f6b)[0x2cf3b738f6b]
/usr/lib64/libphp_common-5.6.7.so(php_shutdown_config+0x21)[0x2cf3d88a8a1]
/usr/lib64/libphp_common-5.6.7.so(php_module_shutdown+0x3e)[0x2cf3d883ece]
/usr/sbin/php56-fpm[0x412379]
/usr/sbin/php56-fpm(fpm_cleanups_run+0x56)[0x40b536]
/usr/sbin/php56-fpm(fpm_unix_init_main+0x621)[0x418471]
/usr/sbin/php56-fpm(fpm_init+0x73)[0x40a773]
/usr/sbin/php56-fpm(main+0x795)[0x407455]
/lib64/libc.so.6(__libc_start_main+0xf0)[0x2cf3b6e18a0]
/usr/sbin/php56-fpm(_start+0x29)[0x408699]
======= Memory map: ========

# rpm -q php56-fpm glibc
php56-fpm-5.6.7-1.x86_64
glibc-2.21-2.x86_64

U mnie w pełni powtarzalne na kilku różnych maszynach na x86_64.
Ktoś może potwierdzić i/lub wie o co chodzi?