Description:
------------
When events.mechanism is set to "port", php-fpm is crashing.
Was running just fine while on 5.4.26, crashes began immidiately after upgrading to 5.4.34.

Backtrace:

# dbx /usr/local/php/sbin/php-fpm core.php-fpm.23131 
For information about new features see `help changes'
To remove this message, put `dbxenv suppress_startup_message 7.9' in your .dbxrc
Reading php-fpm
core file header read successfully
Reading ld.so.1
Reading libz.so.1
Reading libresolv.so.2
Reading librt.so.1
Reading libmysqlclient.so.18.0.0
Reading libldap.so.5
Reading liblber-2.4.so.2.7.0
Reading libpng14.so.14.8.0
Reading libjpeg.so.62.0.0
Reading libcrypto.so.1.0.0
Reading libssl.so.1.0.0
Reading libm.so.2
Reading libnsl.so.1
Reading libsocket.so.1
Reading libxml2.so.2
Reading libfreetype.so.6
Reading libc.so.1
Reading libgcc_s.so.1
Reading libdl.so.1
Reading libcrypto.so.1.0.0
Reading libpthread.so.1
Reading libnspr4.so
Reading libmd.so.1
Reading libsasl.so.1
Reading libplc4.so
Reading libnss3.so
Reading libnssutil3.so
Reading libplds4.so
Reading libssl3.so
Reading libthread.so.1
Reading libmp.so.2
Reading libbz2.so.1
Reading en_US.UTF-8.so.3
Reading methods_unicode.so.3
Reading curl.so
Reading libcurl.so.4.3.0
Reading libidn.so.11.6.2
Reading libssl.so.1.0.0
Reading memcache.so
Reading oci8.so
Reading libclntsh.so.11.1
dbx: internal warning: "(null)"::srcname(InfoOrigin_CMDLINE): value "ntcontab.c" being set to "nt.c"
Reading libnnz11.so
Reading libkstat.so.1
Reading libgen.so.1
Reading libsched.so.1
Reading libaio.so.1
Reading libpool.so.1
Reading openssl.so
Reading radius.so
Reading redis.so
Reading newrelic-20100525.so
Reading libmalloc.so.1
Reading libscf.so.1
Reading libnvpair.so.1
Reading libexacct.so.1
Reading libuutil.so.1
Reading libsmbios.so.1
t@1 (l@1) program terminated by signal SEGV (no mapping at the fault address)
0xffffffffffffffff:     <bad address 0xffffffffffffffff>
(dbx) where
current thread: t@1
  [1] 0x2c00000016(0x1235100, 0x0, 0x31, 0x1, 0x4, 0xfffffd7fffdfd170), at 0x2c00000016 
  [2] fpm_event_fire(0x0, 0x0, 0x0, 0x0, 0x0, 0x0), at 0x92796a 
  [3] fpm_event_port_wait(0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x5a5b, 0x325fdad, 0xf0ab7, 0x1, 0x0, 0xfffffd7fffdffbfc, 0xfffffd7fffdffcd8, 0x1, 0xd9358c, 0xfffffd7fffdfd220, 0x922c21, 0xe61860, 0x0), at 0x932cf0 
  [4] fpm_event_loop(0x0, 0x0, 0x0, 0x0, 0x0, 0x0), at 0x927ca7 
  [5] fpm_run(0x0, 0x0, 0x0, 0x0, 0x0, 0x0), at 0x922c21 
  [6] main(0x0, 0x0, 0x0, 0x0, 0x0, 0x0), at 0x92aa84 
(dbx) quit