linux-kernel - Re: [PATCH 0/9] staging: move greybus core out of staging

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Date:   Tue, 27 Aug 2019 15:30:21 +0100
From:   Rui Miguel Silva <rmfrfs@...il.com>
To:     driverdev-devel@...uxdriverproject.org
Cc:     Dan Carpenter <dan.carpenter@...cle.com>,
        devel@...verdev.osuosl.org, greybus-dev@...ts.linaro.org,
        elder@...nel.org, johan@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/9] staging: move greybus core out of staging

Hi,
On Tue 27 Aug 2019 at 14:45, Greg Kroah-Hartman wrote:
> On Tue, Aug 27, 2019 at 04:36:11PM +0300, Dan Carpenter wrote:
>> I can't compile greybus so it's hard to run Smatch on it...  I have a
>> Smatch thing which ignores missing includes and just tries its best.
>> It mostly generates garbage output but a couple of these look like
>> potential issues:
>
> Why can't you compile the code?
>

I think we are missing includes in some of the
greybus header files.

>
>> drivers/staging/greybus/operation.c:379 gb_operation_message_alloc() warn: check 'message_size' for integer overflows 'kzalloc()'
>
> That should be checked on line 368, right?
>
>> drivers/staging/greybus/light.c:1256 gb_lights_request_handler() warn: 'light->channels' double freed
>> drivers/staging/greybus/light.c:1256 gb_lights_request_handler() warn: 'light->name' double freed
>
> I don't understand this warning, how are these potentially double freed?
>
> And the light.c file isn't moving out of drivers/staging/ just yet :)
>

I will take a look at this also.

Cheers,
   Rui