linux-kernel - Re: Potential NULL pointer deference in iwlwifi: mvm

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Message-ID: <c257bdfd1fc816367f5aad28953d7d100e75810d.camel@sipsolutions.net>
Date:   Mon, 07 Oct 2019 21:21:42 +0200
From:   Johannes Berg <johannes@...solutions.net>
To:     Yizhuo Zhai <yzhai003@....edu>,
        Emmanuel Grumbach <emmanuel.grumbach@...el.com>,
        Luca Coelho <luciano.coelho@...el.com>,
        Intel Linux Wireless <linuxwifi@...el.com>,
        Kalle Valo <kvalo@...eaurora.org>,
        Ayala Beker <ayala.beker@...el.com>,
        Shahar S Matityahu <shahar.s.matityahu@...el.com>,
        Sara Sharon <sara.sharon@...el.com>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Zhiyun Qian <zhiyunq@...ucr.edu>,
        Chengyu Song <csong@...ucr.edu>
Subject: Re: Potential NULL pointer deference in iwlwifi: mvm

On Mon, 2019-10-07 at 12:19 -0700, Yizhuo Zhai wrote:
> Hi All:
> 
> drivers/net/wireless/intel/iwlwifi/mvm/scan.c:
> 
> Inside function iwl_mvm_power_ps_disabled_iterator(),
> iwl_mvm_vif_from_mac80211()
> could return NULL

No, it can not.

Whatever tool you've used to find this - you should fix it.

johannes