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Re: [PATCH] mac80211: Fix possible sband related NULL pointer de-reference

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On Thu, 2017-04-27 at 12:45 +0530, Mohammed Shafi Shajakhan wrote:
> From: Mohammed Shafi Shajakhan <mohammed@xxxxxxxxxxxxxxxx>
> 
> Existing API 'ieee80211_get_sdata_band' returns default 2 GHz band
> even
> if the channel context configuration is NULL. This crashes for
> chipsets
> which support 5 Ghz alone when it tries to access members of 'sband'.
> Channel context configuration can be NULL in multivif case and when
> channel switch is in progress (or) when it fails. Fix this by
> replacing
> the API 'ieee80211_get_sdata_band' with  'ieee80211_get_sband' which
> returns a NULL pointer for sband when the channel configuration is
> NULL.

Makes sense.

Applied, but could you point to the one that actually crashed?


johannes



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