linux-kernel - Re: Staging status of speakup

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Date:   Tue, 19 Mar 2019 18:11:58 +0100
From:   Adam Borowski <kilobyte@...band.pl>
To:     Alan Cox <gnomes@...rguk.ukuu.org.uk>
Cc:     Samuel Thibault <samuel.thibault@...-lyon.org>,
        Chris Brannon <chris@...-brannons.com>,
        Okash Khawaja <okash.khawaja@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        speakup@...ux-speakup.org, devel@...verdev.osuosl.org,
        William Hubbs <w.d.hubbs@...il.com>,
        Kirk Reiser <kirk@...sers.ca>, linux-kernel@...r.kernel.org
Subject: Re: Staging status of speakup

On Tue, Mar 19, 2019 at 04:31:21PM +0000, Alan Cox wrote:
> On Sat, 16 Mar 2019 10:35:43 +0100
> Samuel Thibault <samuel.thibault@...-lyon.org> wrote:
> > Chris Brannon, le ven. 15 mars 2019 18:19:39 -0700, a ecrit:
> > > What kind of reproducer do you need here?  It's straightforward to
> > > reproduce in casual use, at least with a software synthesizer.  
> > 
> > we need a walk-through of the kind of operation that
> > produces the issue. It does not have to be reproducible each time it is
> > done. Perhaps (I really don't know what that bug is about actually) it
> > is a matter of putting text in the selection buffer, and try to paste it
> > 100 times, and once every 10 times it will be garbled, for instance.
> 
> paste_selection still says
> 
> /* Insert the contents of the selection buffer into the
>  * queue of the tty associated with the current console.
>  * Invoked by ioctl().
>  *
>  * Locking: called without locks. Calls the ldisc wrongly with
>  * unsafe methods,
>  */
> 
> from which I deduce that with everyone using X nobody ever bothered to
> fix it. So before you look too hard at the speakup code you might want to
> review the interaction with selection.c too.

This looks like https://bugs.debian.org/849474 which causes a lockup, and
for which Bill Allombert wrote a nice reproducer.


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