gnome-terminal refuses input after terminating password prompt with Ctrl+C

[Karl-Philipp Richter]

After giving the command `sudo mount -t cifs -o credentials=/path/to/inexisting/dir,uid=1000,gid=1000,rw //1.2.3.4/share_name/mnt/share_name` the user is asked to enter the password with the `Password for root@//1.2.3.4/share_name:` prompt. After pressing <kbd>Ctrl</kbd>+<kbd>C</kbd> it's no longer possible to make input in `gnome-terminal`.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: cifs-utils 2:6.0-1ubuntu2
ProcVersionSignature: Ubuntu 3.19.0-28.30-generic 3.19.8-ckt5
Uname: Linux 3.19.0-28-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.17.2-0ubuntu1.4
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Sep 17 15:44:06 2015
InstallationDate: Installed on 2015-09-14 (2 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
SourcePackage: cifs-utils
UpgradeStatus: No upgrade log present (probably fresh install)