Comment 2 for bug 1690570

The only related change is the kernel patch you already found [1].

Given what it states in that patch I wonder if there is something to your setup that causes this to trigger. In that case we would have to find out what that is.

I checked the few samba mounts I had around and non showed the error.
For now I'll add a kernel task since the kernel change might have been the trigger (although this patch is old, so it should not be a new change).

Furthermore we would need a better description how to actually see this.
You wrote "ive tested within virtualbox lubuntu 64 14.04.5 clean no upgrades apt-get install samba cifs-utils with the same problem" which sounds great. That means you have a small set of commands/configs we could deploy in a guest to recreate? Could you please share this list of commands/configs?

[1]: http://www.spinics.net/lists/stable/msg108998.html