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 11:05:29 +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 10:18 AM, Sedat Dilek <sedat.dilek@...il.com> wrote:
> 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>

Tested-by: Sedat Dilek <sedat.dilek@...il.com>

Unfortunately, the fix will be in tomorrow's Linux-Next (next-20120914).

- Sedat -

[1] https://github.com/rydberg/linux/commit/ccc6557bfd02efdca4d9dfda6cfdfe5a08d0193b

>> 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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