Hi,

for me the proposed kernel 4.4.0-46.67 do not work ... Permission denied
...

As mentioned above mainline 4.4.27 work without problem.

Maybe some surveillance will help.

In our enviroment the FreeBSD 11 server shares /apool/NFS/share/home as
NFSv4 + Kerberos ... every directory is a zfs filesystem. The clients
mount /home/nfs.

Users home is located under /home/nfs/staff/username ... staff and
username are also zfs filesystems.

A user can accesss his homedirectory under /home/nfs/staff/username
without error but the next level deeper will only work as a normal
directory, not as another zfs filesystem or NFSv4 sub-share

If i look at the mounts as the affected user with mount or df i see the
base mountpoint /home/nfs and the sub-shares /home/nfs/staff and
/home/nfs/staff/username

With kernels having the problem, the next sub-share will not shown when
i try to access it.

With kernel working without the "Permission denied" problem i am able to
access the next sub-share (data for example ) and mount or df shows also
/home/nfs/staff/username/data

This happend also on shares without kerberos.

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https://bugs.launchpad.net/bugs/1604396

Title:
  Kernel 4.4.0-31 cd into NFS4 directory: Operation not permitted

Status in linux package in Ubuntu:
  Triaged
Status in linux source package in Xenial:
  Triaged

Bug description:
  Since apt-upgrading my Ubuntu 16.04 PC to kernel 4.4.0-31 I can't cd
  into NFS4 subvolumes any more:

  zierke@rzpc100$ uname -a
  Linux rzpc100 4.4.0-31-generic #50-Ubuntu SMP Wed Jul 13 00:07:12 UTC 2016 
x86_64 x86_64 x86_64 GNU/Linux
  zierke@rzpc100$ kinit
  Password for zie...@informatik.uni-hamburg.de:
  zierke@rzpc100$ cd /informatik2
  zierke@rzpc100$ cd rz
  -bash: cd: /informatik2/rz: Operation not permitted

  When I reboot my PC with the previous kernel 4.4.0-28 this works fine.

  This problem has also been mentioned in
  
https://www.kubuntuforums.net/showthread.php?70499-Latest-16-04-bug-NFS-problem-no-access-unless-I-use-root-first-strange
  https://ubuntuforums.org/showthread.php?t=2331137

To manage notifications about this bug go to:
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