The problem here is that the options field embeds a space ("unc=\\winserv\CD Masters"), which it shouldn't. The other fields that have spaces encode them ("//winserv/CD\040Masters"), so the options field should do that as well. That makes this a kernel bug, perhaps.
I note that one of the lines in /proc/mounts has 7 fields instead of 6:
//winserv/ CD\040Masters /mnt/shares/ cd_masters cifs rw,mand, nosuid, nodev,noexec, unc=\\winserv\ CD Masters, username= dtjl,domain= ,rsize= 16384,wsize= 57344 0 0
The problem here is that the options field embeds a space ("unc=\\winserv\CD Masters"), which it shouldn't. The other fields that have spaces encode them ("//winserv/ CD\040Masters" ), so the options field should do that as well. That makes this a kernel bug, perhaps.