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Date: Thu, 4 Jul 2024 12:11:30 +0200
Message-ID: <CAKAoaQkGpp1qhuuCP_cnHbx_hii_Q5CWDPFAjZAiV18R=yQh8w@mail.gmail.com>
Subject: mount nfsdir ; cd /cygdrive/y ; ls -l ; cd / ; umount nfsdir # causes
 kernel VNetRoot to be stuck...
To: cygwin AT cygwin DOT com
From: Roland Mainz via Cygwin <cygwin AT cygwin DOT com>
Reply-To: Roland Mainz <roland DOT mainz AT nrubsig DOT org>
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Sender: "Cygwin" <cygwin-bounces~archive-cygwin=delorie DOT com AT cygwin DOT com>

Hi!

-----

AFAIK we found a resource or Win32 object refcount leak:
If I do a $ mount nfsdir_as_Y ; cd /cygdrive/y ; ls -l ; cd / ; umount
Y: #, the the VNetRoot used by the filesystem's kernel module is not
finalised (e.g. |MRxFinalizeVNetRoot()| is not being called).
If I do the same with just Windows cmd.exe, e.g. $
C:\WINDOWS\system32\mount.exe nfsdir as Y: ; Y: ; dir ; C:
C:\WINDOWS\system32\umount.exe Y: #, then the VNetRoot is being
finalised.

Tested with Microsoft's Windows NFSv3 client and ms-nfs41-client
NFSv4.1 client, cygserver is running.

$ uname -a
CYGWIN_NT-10.0-19045 DERFWNB8353 3.5.3-1.x86_64 2024-04-03 17:25 UTC
x86_64 Cygwin

Does anyone have a good idea how to debug this ?

----

Bye,
Roland
-- 
  __ .  . __
 (o.\ \/ /.o) roland DOT mainz AT nrubsig DOT org
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  /O /==\ O\  TEL +49 641 3992797
 (;O/ \/ \O;)

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