tun: return proper error code from tun_do_read

Hello,

Please consider including mainline commit 957f094f221f81e457133b1f4c4d95ffa49ff731 in the next v3.19.y release. It was included in the mainline tree as of v4.0-rc1. It has been tested and confirmed to resolve:
http://bugs.launchpad.net/bugs/1448942
And upstream bug report:
https://bugzilla.kernel.org/show_bug.cgi?id=90901

The bug was introduce in v3.19-rc1 by commit 9b067034d0, so it is not needed in any other stable kernels.

commit 957f094f221f81e457133b1f4c4d95ffa49ff731

Author: Alex Gartrell <[email protected]>
Date:   Thu Dec 25 23:22:49 2014 -0800

tun: return proper error code from tun_do_read

Quoted 19 lines · Joseph Salisbury

Hello,

Please consider including mainline commit 957f094f221f81e457133b1f4c4d95ffa49ff731 in the next v3.19.y release. It was included in the mainline tree as of v4.0-rc1. It has been tested and confirmed to resolve:
http://bugs.launchpad.net/bugs/1448942
And upstream bug report:
https://bugzilla.kernel.org/show_bug.cgi?id=90901

The bug was introduce in v3.19-rc1 by commit 9b067034d0, so it is not needed in any other stable kernels.

commit 957f094f221f81e457133b1f4c4d95ffa49ff731

Author: Alex Gartrell <[email protected]>
Date:   Thu Dec 25 23:22:49 2014 -0800

Quoted 1 line

tun: return proper error code from tun_do_read

It's already queued for 3.19.6. I pinged DaveM about it back in March and it eventually got queued up.

josh