(gdb) bt
#0  0x00002b70ab7e5980 in strlen () from /lib64/libc.so.6
#1  0x00002b70ab7b9081 in vfprintf () from /lib64/libc.so.6
#2  0x00002b70ab7b9ac6 in xdr_void () from /lib64/libc.so.6
#3  0x00002b70ab7b564a in vfprintf () from /lib64/libc.so.6
#4  0x000000000040808b in xlog_backend (kind=256, fmt=0x40a2c8 "unable to register (%s, %d, udp).", args=0x7fffff754d40) at xlog.c:175
#5  0x0000000000408192 in xlog (kind=256, fmt=0x40a2c8 "unable to register (%s, %d, udp).") at xlog.c:189
#6  0x00000000004075b8 in rpc_init (name=0x40979d "statd", prog=100024, vers=1, dispatch=0x40452c <sm_prog_1_wrapper>, defport=0) at rpcmisc.c:105
#7  0x0000000000405317 in main (argc=1, argv=0x7fffff754fe8) at statd.c:490
(gdb)