Path: csiph.com!1.us.feeder.erje.net!2.us.feeder.erje.net!feeder.erje.net!2.eu.feeder.erje.net!newsreader4.netcologne.de!news.netcologne.de!news.unit0.net!news.panservice.it!bofh.it!news.nic.it!robomod From: Brian Norris Newsgroups: linux.kernel Subject: Re: [PATCH] mwifiex: MAC randomization should not be persistent Date: Thu, 06 Apr 2017 18:50:02 +0200 Message-ID: References: X-Original-To: Kalle Valo Dkim-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=TUROyhV1EZ78dHsjd2z98PNDa1hWbcJU5NAQbSrtLdU=; b=Lr3WmONYsiDxr+ChqlcwOov6f4K6ZXPDEEHhx1zq9mx90C6TBmGB3n3JfKBMjfBdWa OPtvMr+M3D9ojSDU8cJx1HOAwRQQaKq7rLOmoXL2vlyaIYO+/5ruq0SuH3dXTBei/N6b u2Odp25DxzZRxJRhpvfW47l/sEQLfnAf5L7zI= X-Google-Dkim-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=TUROyhV1EZ78dHsjd2z98PNDa1hWbcJU5NAQbSrtLdU=; b=G0K8W659TgCED2QB8IXAFzjGAQl8xm5VMoub5y8ou8/f8EW1CoVHEumW+Tsw+Mhrgy 5lGTFZn4MWIaoBJsH6RKyBv93SpUzVAX9PLHjlri2SyXvxfA/WthDy3Xth0KoCg1DNmu Q4tHHHqh0Gcn8WJD5JGlYxOgIIbtVs8uIpGzM2exj+z+Q7PGZdyIQCJUySlq0TJMXT8I /eO6v3muA25Htw2/4d3bgkoi+ohLUAMirC5DJOeBkZV2pCcpupWraliRq8Q5OouqQwUV XW7ZsuQM1erDFc87beL4vBIauWT212UK2EZq2H/gJ31n81e8Ke/Evyggmnu88nStKA3p 8r9A== X-Gm-Message-State: AFeK/H0jxHFpBtfFXsmEcDORUpZvs2NEoWW6iT+/uxy7L3bFivSHTHLf2VdnUWQIQMVigbZe X-Received: by 10.98.218.76 with SMTP id w12mr36580368pfl.162.1491497296785; Thu, 06 Apr 2017 09:48:16 -0700 (PDT) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) Sender: robomod@news.nic.it List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Approved: robomod@news.nic.it Lines: 29 Organization: linux.* mail to news gateway X-Original-Cc: Nishant Sarmukadam , Ganapathi Bhat , Xinming Hu , linux-kernel@vger.kernel.org, Dmitry Torokhov , netdev@vger.kernel.org, linux-wireless@vger.kernel.org X-Original-Date: Thu, 6 Apr 2017 09:48:08 -0700 X-Original-Message-ID: <20170406164807.GB25323@google.com> X-Original-References: <20170405222640.4494-1-briannorris@chromium.org> <87inmifak8.fsf@kamboji.qca.qualcomm.com> X-Original-Sender: linux-kernel-owner@vger.kernel.org Xref: csiph.com linux.kernel:1618182 On Thu, Apr 06, 2017 at 07:02:15AM +0300, Kalle Valo wrote: > Brian Norris writes: > > > nl80211 provides the NL80211_SCAN_FLAG_RANDOM_ADDR for every scan > > request that should be randomized; the absence of such a flag means we > > should not randomize. However, mwifiex was stashing the latest > > randomization request and *always* using it for future scans, even those > > that didn't set the flag. > > > > Let's zero out the randomization info whenever we get a scan request > > without NL80211_SCAN_FLAG_RANDOM_ADDR. I'd prefer to remove > > priv->random_mac entirely (and plumb the randomization MAC properly > > through the call sequence), but the spaghetti is a little difficult to > > unravel here for me. > > > > Fixes: c2a8f0ff9c6c ("mwifiex: support random MAC address for scanning") > > So the first release with this was v4.9. > > > Signed-off-by: Brian Norris > > --- > > Should this be tagged for -stable? > > IMHO yes. Sounds fine to me. I suppose you'll do this when applying? Or I can resend... Brian