linux-kernel - Re: 2.6.23: no more free evdev devices

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Message-ID: <d120d5000711060606h66adacd8q4c1576f98389bf41@mail.gmail.com>
Date:	Tue, 6 Nov 2007 09:06:16 -0500
From:	"Dmitry Torokhov" <dmitry.torokhov@...il.com>
To:	"Andrew Morton" <akpm@...ux-foundation.org>
Cc:	"Soeren Sonnenburg" <kernel@....de>,
	"Linux Kernel" <linux-kernel@...r.kernel.org>,
	"Jiri Kosina" <jikos@...os.cz>
Subject: Re: 2.6.23: no more free evdev devices - evdev leak?

On Nov 5, 2007 10:13 PM, Andrew Morton <akpm@...ux-foundation.org> wrote:
> On Wed, 31 Oct 2007 16:34:44 +0000 Soeren Sonnenburg <kernel@....de> wrote:
>
> > Dear all,
>
> (cc's added)
>
>
> > whenever I do a suspend resume cycle the input device's numbers are
> > increased until I finally run out of evdev devices. Is this a kernel
> > problem or some userspace program (udev/...) creating new devices all
> > the time?

evdev marks the device slot as free as soon as evdev_disconnect is
called which shoudl be called from input_unregister_device().

Could you please try sticking a printk in
hidinput_disconnect(drivers/hid/hid-input.c) to verify that
input_unregister_device is in fact being called?

-- 
Dmitry
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