Comment 2 for bug 1514766

StacktraceTop:
 strlen () at ../sysdeps/x86_64/strlen.S:106
 push_ucs2_talloc (ctx=ctx@entry=0x0, dest=dest@entry=0x7ffe2aa192e8, src=src@entry=0x0, converted_size=converted_size@entry=0x7ffe2aa192e0) at ../lib/util/charset/pull_push.c:41
 E_md4hash (passwd=0x0, p16=p16@entry=0x7ffe2aa19350 "|") at ../libcli/auth/smbencrypt.c:78
 create_volume_objectid (conn=<optimized out>, objid=objid@entry=0x7ffe2aa19350 "|") at ../source3/smbd/trans2.c:3017
 vfswrap_fsctl (handle=<optimized out>, fsp=0x7f70d72e0f80, ctx=<optimized out>, function=<optimized out>, req_flags=<optimized out>, _in_data=<optimized out>, in_len=0, _out_data=0x7ffe2aa19438, max_out_len=64, out_len=0x7ffe2aa19434) at ../source3/modules/vfs_default.c:1066