Bad Address with /cygdrive paths

[Barry Roberts <manithree@gmail.com>]

I've used cygwin for lots of years, and this is kind of weird to me.
My operations guys set up some Windows Server 2012 R2 servers with
Cygwin x86-64 2.2.1.

There's a CIFS mount (from an HNAS) that I use a lot that is giving me
problems.  For example:

$ ls /cygdrive/m/install
ls: cannot access /cygdrive/m/install: Bad address

But:
$ ls m:/install

Works just great.

Using /cygdrive/m I can list the contents of the root of the drive,
but I can't read any files.  And any subdirectory just gives me the
"Bad address" error.   Everything (except completion) works just fine
with m:/ paths.

This isn't a huge deal.  I mostly use cygwin on these servers to
manage them with scripts, so I've changed my configuration variables
to <drive letter>: paths and everything seems to work.  But I did
spend nearly half a day figuring this out, so I'm curious if there's a
configuration problem or a known issue that my searches haven't
uncovered yet.

Thanks,
Barry Roberts

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