协程模式下使用openssl且开启USE_FSTAT_CHECKFD导致程序挂死

[fly542]

centos7.2系统，协程模式下，开启 USE_FSTAT_CHECKFD优化时，程序挂死位置为443端口上 openssl 的读写锁

[Switching to thread 3 (Thread 0x7fd2afff700 (LWP 4038))
#0 0x00007fd2d20f603e in pthread_rwlock_wrlock () from /lib64/libpthread.so.0
(gdb) bt
#0 0x00007fd2d20f603e in pthread_rwlock_wrlock () from /lib64/libpthread.so.0
#1 0x00000000005c9059 in CRYPTO_THREAD write_lock
#2 0x0000000000597231 in rand_drbg_get_entropy
#3 0x0000000000595283 in RAND_DRBG_reseed ()
#4 0x0000000000595731 in RAND_DRBG_generate 
#5 0x000000000059593a in RAND_DRBG_bytes ()
#6 0x000000000050826e in tls_construct_new_session_ticket
#7 0x00000000004f9d27 in state_machine ()
#8 0x00000000004e6118 in SSL_do_handshake
#9 0x00000000006f8efc in acl::οpenssl_io::handshake() ()
#10 0x0000000006f9089 in acl::openssl_io::open(ACL_VSTREAAM*)
#ll 0x000000000700d87 in acl: stream::setup hook(acl::stream_hook*)
#12 0x000000000413b89 in dp::dp_openssl: setup(acl: sockeet stream&) ()
#13 0x0000000004100al in dp::context_mgr::deal_tcp(acl::socket_stream&, bool) ()
#14 0x0000000006c0836 in acl::master_fiber::service_on_accept(vvoid*, ACL_VSTREAM*) ()
#15 0x0000000006c1493 in fiber_client(ACL_FIBER*, void*)(1)
#16 0x00000000073dbll in fiber_start ()
#17 0x00007fd2d0f00ll0 in ?? () from /lib64/libc.so.6
(gdb)