Re: [PATCH] mwifiex: fix null pointer deference when adapter is null

[Julian Calaby]

Hi All,

On Thu, Sep 15, 2016 at 11:42 PM, Colin King <colin.king@xxxxxxxxxxxxx> wrote:
> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
>
> If adapter is null the error exit path in mwifiex_shutdown_sw is
> to down the semaphore sem and print some debug via mwifiex_dbg.
> However, passing a NULL adapter to mwifiex_dbg causes a null
> pointer deference when accessing adapter->dev.  This fix checks
> for a null adapter at the start of the function and to exit
> without the need to up the semaphore and we also skip the debug
> to avoid the null pointer dereference.
>
> Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>

Reviewed-by: Julian Calaby <julian.calaby@xxxxxxxxx>

Thanks,

-- 
Julian Calaby

Email: julian.calaby@xxxxxxxxx
Profile: http://www.google.com/profiles/julian.calaby/