linux-kernel - Re: A potential race in drivers/staging/speakup/speakup.ko

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Message-ID: <20160905103801.GN15376@var.bordeaux.inria.fr>
Date:   Mon, 5 Sep 2016 12:38:01 +0200
From:   Samuel Thibault <samuel.thibault@...-lyon.org>
To:     Pavel Andrianov <andrianov@...ras.ru>
Cc:     William Hubbs <w.d.hubbs@...il.com>,
        Chris Brannon <chris@...-brannons.com>,
        Kirk Reiser <kirk@...sers.ca>, speakup@...ux-speakup.org,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
        Vaishali Thakkar <vaishali.thakkar@...cle.com>,
        ldv-project@...uxtesting.org
Subject: Re: A potential race in drivers/staging/speakup/speakup.ko

Pavel Andrianov, on Mon 05 Sep 2016 13:33:33 +0300, wrote:
> synth_direct_store may be called via device_attributes interface.

Ah, right.

> In which function the lock should be added?

That'd be synth_direct_store then, around the while loop.

Samuel