Apache падает после загрузки mod_ssl

...
<VirtualHost _default_:443>
...
  SSLCertificateFile /path/to/apache/conf/ssl.crt 
  SSLCertificateKeyFile /path/to/apache/conf/ssl.key 
  SSLCertificateChainFile /path/to/apache/conf/sub.class1.server.ca.pem
...
</VirtualHost>
...

[Sat May 30 08:55:30 2015] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[ 2015-05-30 08:55:30.3639 6814/7fda8f00f720 agents/Watchdog/Main.cpp:538 ]: Options: { 'analytics_log_user' => 'nobody', 'default_group' => 'nobody', 'default_python' => 'python', 'default_ruby' => '/usr/local/rvm/gems/ruby-2.0.0-p481/wrappers/ruby', 'default_user' => 'nobody', 'log_level' => '0', 'max_pool_size' => '6', 'passenger_root' => '/usr/local/rvm/gems/ruby-2.0.0-p481/gems/passenger-4.0.46', 'passenger_version' => '4.0.46', 'pool_idle_time' => '300', 'temp_dir' => '/tmp', 'union_station_gateway_address' => 'gateway.unionstationapp.com', 'union_station_gateway_port' => '443', 'user_switching' => 'true', 'web_server_passenger_version' => '4.0.46', 'web_server_pid' => '6813', 'web_server_type' => 'apache', 'web_server_worker_gid' => '48', 'web_server_worker_uid' => '48' }
[ 2015-05-30 08:55:30.3774 6817/7f7724013720 agents/HelperAgent/Main.cpp:649 ]: PassengerHelperAgent online, listening at unix:/tmp/passenger.1.0.6813/generation-0/request
[ 2015-05-30 08:55:30.3906 6822/7ff57b4b67e0 agents/LoggingAgent/Main.cpp:321 ]: PassengerLoggingAgent online, listening at unix:/tmp/passenger.1.0.6813/generation-0/logging
[ 2015-05-30 08:55:30.3910 6814/7fda8f00f720 agents/Watchdog/Main.cpp:728 ]: All Phusion Passenger agents started!
[Sat May 30 08:55:30 2015] [info] Init: Seeding PRNG with 256 bytes of entropy
[Sat May 30 08:55:36 2015] [info] Init: Wiped out the queried pass phrases from memory
[Sat May 30 08:55:36 2015] [info] Init: Initializing (virtual) servers for SSL
[ 2015-05-30 08:55:36.4372 6822/7ff57b4b67e0 agents/LoggingAgent/Main.cpp:289 ]: Caught signal, exiting...