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[23.128.96.18]) by mx.google.com with ESMTP id g25si3263419ejo.389.2020.04.24.11.54.24; Fri, 24 Apr 2020 11:54:48 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-wireless-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-wireless-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-wireless-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727108AbgDXSwX (ORCPT + 99 others); Fri, 24 Apr 2020 14:52:23 -0400 Received: from mout-p-202.mailbox.org ([80.241.56.172]:53088 "EHLO mout-p-202.mailbox.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727022AbgDXSwW (ORCPT ); Fri, 24 Apr 2020 14:52:22 -0400 Received: from smtp1.mailbox.org (smtp1.mailbox.org [IPv6:2001:67c:2050:105:465:1:1:0]) (using TLSv1.2 with cipher ECDHE-RSA-CHACHA20-POLY1305 (256/256 bits)) (No client certificate requested) by mout-p-202.mailbox.org (Postfix) with ESMTPS id 4983FH0792zQlHn; Fri, 24 Apr 2020 20:52:19 +0200 (CEST) X-Virus-Scanned: amavisd-new at heinlein-support.de Received: from smtp1.mailbox.org ([80.241.60.240]) by spamfilter04.heinlein-hosting.de (spamfilter04.heinlein-hosting.de [80.241.56.122]) (amavisd-new, port 10030) with ESMTP id i22p3gJv9Hba; Fri, 24 Apr 2020 20:52:15 +0200 (CEST) Subject: Re: [PATCH] mac80211: populate debugfs only after cfg80211 init To: Johannes Berg , linux-wireless@vger.kernel.org Cc: sumit.garg@linaro.org, Johannes Berg , Jouni Malinen , kernel test robot , Felix Fietkau References: <20200423111344.0e00d3346f12.Iadc76a03a55093d94391fc672e996a458702875d@changeid> From: Hauke Mehrtens Autocrypt: addr=hauke@hauke-m.de; keydata= mQINBFtLdKcBEADFOTNUys8TnhpEdE5e1wO1vC+a62dPtuZgxYG83+9iVpsAyaSrCGGz5tmu BgkEMZVK9YogfMyVHFEcy0RqfO7gIYBYvFp0z32btJhjkjBm9hZ6eonjFnG9XmqDKg/aZI+u 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CiaxvxyPg7vAuMLDOykqNZ1wJYzoQka1kJi6RmBFpDQUg7+/PS6lCFoEppWp7eUSSNPm8VFb jwa1D3MgS3+VSKOMmFWGRCY99bWnl2Zd2jfdETmBFNXA94mg2N2vI/THju79u1dR9gzpjH7R 3jmPvpEc2WCU5uJfaVoAEqh9kI2D7NlQCG80UkXDHGmcoHBnsiEZGjzm5zYOYinjTUeoy3F0 8aTZ+e/sj+r4VTOUB/b0jy+JPnxn23FktGIYnQ+lLsAkmcbcDwCop4V59weR2eqwBqedNRUX 5OTP93lUIhrRIy3cZT/A5nNcUeCYRS8bCRFKrQKEn92RFg== Message-ID: Date: Fri, 24 Apr 2020 20:52:12 +0200 MIME-Version: 1.0 In-Reply-To: <20200423111344.0e00d3346f12.Iadc76a03a55093d94391fc672e996a458702875d@changeid> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: E85D9177C X-Rspamd-Score: -1.73 / 15.00 / 15.00 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org On 4/23/20 11:13 AM, Johannes Berg wrote: > From: Johannes Berg > > When fixing the initialization race, we neglected to account for > the fact that debugfs is initialized in wiphy_register(), and > some debugfs things went missing (or rather were rerooted to the > global debugfs root). > > Fix this by adding debugfs entries only after wiphy_register(). > This requires some changes in the rate control code since it > currently adds debugfs at alloc time, which can no longer be > done after the reordering. > > Reported-by: Jouni Malinen > Reported-by: kernel test robot > Reported-by: Hauke Mehrtens > Reported-by: Felix Fietkau > Fixes: 52e04b4ce5d0 ("mac80211: fix race in ieee80211_register_hw()") > Signed-off-by: Johannes Berg Tested-by: Hauke Mehrtens Cc: stable@vger.kernel.org This should be backported to stable as the patch which causes these problems was backported too. Hauke