linux-kernel - Re: linux-next: Tree for Sept 12 (kernel-panic after pressing any key at X login)

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Date:	Thu, 13 Sep 2012 10:18:28 +0200
From:	Sedat Dilek <sedat.dilek@...il.com>
To:	Stephen Rothwell <sfr@...b.auug.org.au>,
	Henrik Rydberg <rydberg@...math.se>
Cc:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Minchan Kim <minchan@...nel.org>, linux-next@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>, linux-input@...r.kernel.org,
	Daniel Kurtz <djkurtz@...omium.org>,
	Benjamin Tissoires <benjamin.tissoires@...c.fr>,
	Ping Cheng <pingc@...om.com>
Subject: Re: linux-next: Tree for Sept 12 (kernel-panic after pressing any key
 at X login)

On Thu, Sep 13, 2012 at 9:04 AM, Henrik Rydberg <rydberg@...math.se> wrote:
>> > >> > this weeks linux-next seems to bring new and new issues, yay :-)!
>> > >> >
>> > >> > I have taken a photo, but can't say what can have caused.
>> > >> > The issue is reproducible...
>> > >> > Immediately, after pressing any key (when X-display-manager (lightdm)
>> > >> > and X-greeter are up) my machine panics and is no more usable (cold
>> > >> > rough brutal killer restart).
>> > >> > Note: Using upstart or systemd does not matter.
>> > >> >
>> > >> > Any pointer to an area where to dig into or any feedback in general is welcome!
>> > >> >
>> > >> > Kind Regards,
>> > >> > - Sedat -
>> >
>> > Hey, cool. Thanks for the pointer in the source-code and the call-trace!
>> > I had reverted [1], but anyway input folks should look at this.
>> >
>> > Kind Regards,
>> > - Sedat -
>> >
>> > [1] http://git.kernel.org/?p=linux/kernel/git/next/linux-next.git;a=commitdiff;h=b276fc1e875a51e4a9dc3322ed008bf4ae481baf
>>
>> Henrik,
>>
>> It looks like your changes are causing the panic.
>
> Indeed, I have pushed the fix below to next already. Thanks for Sedat,
> and sorry for not catching this earlier. :-(
>

Hi Hendrik,

Wow, so fast :-).

Stephen, can you apply this to today's linux-next (next-20120913), please?

Regards,
- Sedat -

> Henrik
>
> --
>
> From ccc6557bfd02efdca4d9dfda6cfdfe5a08d0193b Mon Sep 17 00:00:00 2001
> From: Henrik Rydberg <rydberg@...omail.se>
> Date: Thu, 13 Sep 2012 08:59:40 +0200
> Subject: [PATCH] Input: Fix oops caused by missing null test
>
> Found in linux-next on September 12, thanks Sedat.
>
> Reported-by: Sedat Dilek <sedat.dilek@...il.com>
> Signed-off-by: Henrik Rydberg <rydberg@...omail.se>
> ---
>  drivers/input/input.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/input/input.c b/drivers/input/input.c
> index 5b66b2f..2dff71b 100644
> --- a/drivers/input/input.c
> +++ b/drivers/input/input.c
> @@ -114,7 +114,7 @@ static unsigned int input_to_handler(struct input_handle *handle,
>
>         if (handler->events)
>                 handler->events(handle, vals, count);
> -       else
> +       else if (handler->event)
>                 for (v = vals; v != end; v++)
>                         handler->event(handle, v->type, v->code, v->value);
>
> --
> 1.7.12
>
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