Re: [PATCH] TTY: do not reset master's packet mode
From: Karel Zak
Date: Wed Feb 20 2013 - 12:33:47 EST
On Wed, Feb 20, 2013 at 05:40:34PM +0100, Jiri Slaby wrote:
> On 02/20/2013 02:19 PM, Karel Zak wrote:
> > On Tue, Jan 15, 2013 at 11:26:22PM +0100, Jiri Slaby wrote:
> >> Now that login from util-linux is forced to drop all references to a
> >> TTY which it wants to hangup (to reach reference count 1) we are
> >> seeing issues with telnet. When login closes its last reference to the
> >> slave PTY, it also resets packet mode on the *master* side. And we
> >> have a race here.
> > [...]
> >> By this I am resurrecting an old bug, see References. We are hitting
> >> it regularly now, i.e. with updated util-linux, ergo login.
> >> Here, I am changing a behavior introduced back in 2.1 times. It would
> >> better have a long time testing before goes upstream.
> > It would be nice to found a quick way how to resolve this problem,
> > because telnet+login is broken now... and for end users it seems like
> > a regression.
> Oh, the patch is in the TTY tree and I suppose it will go to 3.9-rc1
> (and to stable as we will get to same later -rc -- to have some testing).
Cool. Thanks for feedback.
Karel Zak <kzak@xxxxxxxxxx>
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