NACK: [Xenial][PATCH 1/2] net/wireless: do not dereference invalid pointer

[Stefan Bader]

On 24.08.2017 09:30, Wen-chien Jesse Sung wrote:
> BugLink: https://launchpad.net/bugs/1712746
> 
No SRU justification in bug report.

> The wiphy may be NULL sometimes. Do not dereference when it's NULL.
> 
No source quoted. Cherry-picked? From where? Possibly needed in Zesty, too?

-Stefan
> Signed-off-by: Wen-chien Jesse Sung <jesse.sung at canonical.com>
> ---
>  net/wireless/util.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/net/wireless/util.c b/net/wireless/util.c
> index baf7218..e358511 100644
> --- a/net/wireless/util.c
> +++ b/net/wireless/util.c
> @@ -121,7 +121,7 @@ struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy,
>  	int i;
>  
>  	for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
> -		sband = wiphy->bands[band];
> +		sband = wiphy ? wiphy->bands[band] : NULL;
>  
>  		if (!sband)
>  			continue;
> 


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