Application hangs at recvmsg() from getaddrinfo()

Issue

• Greenplum Database application hungs at recvmsg() from getaddrinfo() in RHEL7.

A thread waits at recvmsg()
    203 #0  0x00007f07aac751fd in recvmsg () from /lib64/libc.so.6
    204 #1  0x00007f07aac97a6d in make_request () from /lib64/libc.so.6
    205 #2  0x00007f07aac97f64 in __check_pf () from /lib64/libc.so.6
    206 #3  0x00007f07aac5ddf1 in getaddrinfo () from /lib64/libc.so.6

Other threads wait at
    222 #0  0x00007f07aac81c4c in __lll_lock_wait_private () from /lib64/libc.so.6
    223 #1  0x00007f07aac9805d in _L_lock_746 () from /lib64/libc.so.6
    224 #2  0x00007f07aac97e15 in __check_pf () from /lib64/libc.so.6
    225 #3  0x00007f07aac5ddf1 in getaddrinfo () from /lib64/libc.so.6

• The process was waiting at recvmsg() to receive a message from kernel via a NETLINK socket.