From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg Kroah-Hartman Subject: Re: [PATCH v2 0/2] tty: erase buffers when the kernel is done with it. Date: Wed, 10 Oct 2018 20:24:21 +0200 Message-ID: <20181010182421.GA23517@kroah.com> References: <20181004180614.25619-1-gregkh@linuxfoundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org To: Milan Broz Cc: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, jslaby@suse.com, aszlig@nix.build, torvalds@linux-foundation.org, w@1wt.eu, Daniel Zatovic List-Id: linux-serial@vger.kernel.org On Wed, Oct 10, 2018 at 08:20:06PM +0200, Milan Broz wrote: > On 04/10/2018 20:06, Greg Kroah-Hartman wrote: > > azlig and Milan Broz reported that when the tty layer is done with a > > buffer, the data can hang around in it for a very long time. That > > sometimes can "leak" to userspace under some conditions. > > > > Because of this, just zero out the data after the tty layer is finished > > with it, for buffers that we "think" should be zeroed out. > > > > v2 - addressed some review comments on the 2/2 patch. > > Hello Greg, > > together with our intern we re-tested both patches and it fixes the reported problem, > so, if it helps anything, you can add > > Tested-by: Milan Broz > Tested-by: Daniel Zatovic > > Do you plan to add this to linux-next? Yes, I'll queue it up soon, thanks for testing! greg k-h