Description of problem:

# glusterfsd -f server.vol --debug # crash

Version-Release number of selected component (if applicable):

git master 22/3 2018

How reproducible:

Always

Steps to Reproduce:

# cat server.vol 
volume posix
  type storage/posix
  option directory /data
end-volume

volume server
  type protocol/server
  option transport-type tcp
  subvolumes posix
end-volume
# glusterfsd -f server.vol --debug

Actual results:

[...]
/usr/local/lib/libglusterfs.so.0(+0x23c3c)[0x7fb7a7b20c3c]
/usr/local/lib/libglusterfs.so.0(gf_print_trace+0x2d2)[0x7fb7a7b2aa32]
/usr/lib/libc.so.6(+0x348e0)[0x7fb7a5f008e0]
/usr/lib/libc.so.6(+0x156f11)[0x7fb7a6022f11]
/usr/local/lib/glusterfs/4.1dev/xlator/protocol/server.so(+0xa30e)[0x7fb7a116930e]
/usr/local/lib/glusterfs/4.1dev/xlator/protocol/server.so(+0xc1c3)[0x7fb7a116b1c3]
/usr/local/lib/libglusterfs.so.0(xlator_init+0x9f)[0x7fb7a7b1e21f]
/usr/local/lib/libglusterfs.so.0(+0x5af39)[0x7fb7a7b57f39]
/usr/local/lib/libglusterfs.so.0(glusterfs_graph_activate+0x34)[0x7fb7a7b58794]
glusterfsd(glusterfs_process_volfp+0x13b)[0x5642c4634f0b]
glusterfsd(glusterfs_volumes_init+0xf7)[0x5642c4635097]
glusterfsd(main+0x7ee)[0x5642c463128e]
/usr/lib/libc.so.6(__libc_start_main+0xea)[0x7fb7a5eecf4a]
glusterfsd(_start+0x2a)[0x5642c463141a]
---------
Segmentation fault (core dumped)


Additional info:

# glusterfsd -f server.vol --debug --volfile-id=foo # works even though no server is used

server.c:1145        FIRST_CHILD(this)->volfile_id
	                    = gf_strdup (this->ctx->cmd_args.volfile_id);