Description:

When mounting nfs filesystem with user-flag enabled in fstab, exec-flag is ignored and the mounted share does not permit executing files regardless of file permissions.

This seems to be a duplicate of this.
https://bugzilla.redhat.com/show_bug.cgi?id=769636

It seems to have been fixed once already. But a Redhat user reports that is is back. I have not used nfs before so I do not know how it has worked in older versions.


Additional info:
* package version(s)

util-linux 2.22.2-1

* config and/or log files etc.

Relevant line in /etc/fstab:

lacie-d2:/shares/media /mnt/nfs/lacie-d2/media nfs rsize=8192,wsize=8192,timeo=14,intr,_netdev,exec,user 0 0


Steps to reproduce:

[root@rotta tuomas]# mount /mnt/nfs/lacie-d2/media
[root@rotta tuomas]# mount
...
lacie-d2:/shares/media on /mnt/nfs/lacie-d2/media type nfs (rw,nosuid,nodev,noexec,relatime,vers=3,rsize=8192,wsize=8192,namlen=255,hard,proto=tcp,timeo=14,retrans=2,sec=sys,mountaddr=192.168.100.23,mountvers=3,mountport=48204,mountproto=udp,local_lock=none,addr=192.168.100.23,_netdev,user)
...

Noexec flag is reported by mount and files cannot be executed.

Noexec is also active when executed as normal user:
$ mount /mnt/nfs/lacie-d2/media

This does not help:
# mount -o exec /mnt/nfs/lacie-d2/media/

or this:

# mount -o nouser /mnt/nfs/lacie-d2/media/


Noexec is disabled when nouser and exec are given as options

# mount -o exec,nouser /mnt/nfs/lacie-d2/media/

or if user-flag is removed from fstab