Bug 457660

Summary:	>sys-apps/util-linux-2.21.2: mount nfs with exec always mount as noexec
Product:	Gentoo Linux	Reporter:	Tomáš Chvátal (RETIRED) <scarabeus>
Component:	New packages	Assignee:	Gentoo's Team for Core System packages <base-system>
Status:	RESOLVED INVALID
Severity:	normal
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---

Description Tomáš Chvátal (RETIRED) gentoo-dev

2013-02-15 06:32:50 UTC

As per Summary this is regression compared to 2.20 series.

The relevant fstab entry:
192.168.137.10:/data/ /home/data/ nfs4 intr,async,bg,exec,nosuid,user 0 0

Mount state:
192.168.137.10:/data/ on /home/data type nfs4 (rw,user=root,noexec,nosuid,nodev,intr,bg,addr=192.168.137.10,clientaddr=192.168.137.1)

Latest release (2.22.2) still shows the problem.

Comment 1 SpanKY gentoo-dev

2013-04-28 02:55:38 UTC

from the man page:

user  Allow an ordinary user to mount the filesystem.  The name of the mounting
      user is written to mtab so that he can unmount the filesystem again.  This
      option implies the options noexec, nosuid, and nodev (unless overridden by
      subsequent options, as in the option line user,exec,dev,suid).

in your mount option, you put "user" after "exec" which means it's the same as:
  intr,async,bg,exec,nosuid,noexec,nosuid,nodev
and you can see "exec" is clobbered by the "noexec" later