Re: [PATCH v2] greybus: lights: check return of get_channel_from_mode

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On Mon, Mar 25, 2024 at 10:09:55PM +0000, Rui Miguel Silva wrote:
> If channel for the given node is not found we return null from
> get_channel_from_mode. Make sure we validate the return pointer
> before using it in two of the missing places.
> 
> This was originally reported in [0]:
> Found by Linux Verification Center (linuxtesting.org) with SVACE.
> 
> [0] https://lore.kernel.org/all/20240301190425.120605-1-m.lobanov@xxxxxxxxxxxx
> 
> Fixes: 2870b52bae4c ("greybus: lights: add lights implementation")
> Reported-by: Mikhail Lobanov <m.lobanov@xxxxxxxxxxxx>
> Suggested-by: Mikhail Lobanov <m.lobanov@xxxxxxxxxxxx>
> Suggested-by: Alex Elder <elder@xxxxxxxx>
> Signed-off-by: Rui Miguel Silva <rmfrfs@xxxxxxxxx>
> ---
> v1[1] -> v2:
> GregKh:
>     - remove overkill WARN_ON and replace it for a dev_err

Thanks for the quick change, now queued up.

greg k-h




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