From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sipsolutions.net (s3.sipsolutions.net [168.119.38.16]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 95CF0396572 for ; Mon, 3 Aug 2026 08:40:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=168.119.38.16 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785746428; cv=none; b=YP0ng75tvA5yxVUiYY0ULkecerV77+3aNtHfn2M0YY80jwBrMTD1UmMZ0ehyRD6l77kGb+HKql2IiX6KI7qCELPOyFKV3UTE6pC1GqeKCZsktVMYzggoe0+S8LEsJYVeLRjkkiyL39d9wPUEdU0A5I7n8XL/gXtBah9H3g29DpQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785746428; c=relaxed/simple; bh=XecuAQOeYhiDAxs7Uok4jrs1j4cRg33NLWqrdiihqiM=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=cs+amTd9136G8aQF23BlBDqkeI+HynzituB/zCHwQwThvaQezg7rExj3XPGprgte6Z973JjFWrzp2nPMIJCHclICh/4jE/ZBTI3fT+p4OmQ4/bv1BYPGKthq5qvbyArpevbk00FZVxYQ1aFQyzBhH6K/Kudh4OanxkGtSMhyUek= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=permerror header.from=sipsolutions.net; spf=pass smtp.mailfrom=sipsolutions.net; dkim=pass (2048-bit key) header.d=sipsolutions.net header.i=@sipsolutions.net header.b=Na+vvVHH; arc=none smtp.client-ip=168.119.38.16 Authentication-Results: smtp.subspace.kernel.org; dmarc=permerror header.from=sipsolutions.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sipsolutions.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sipsolutions.net header.i=@sipsolutions.net header.b="Na+vvVHH" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sipsolutions.net; s=mail; h=MIME-Version:Content-Transfer-Encoding: Content-Type:References:In-Reply-To:Date:Cc:To:From:Subject:Message-ID:Sender :Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-To: Resent-Cc:Resent-Message-ID; bh=XecuAQOeYhiDAxs7Uok4jrs1j4cRg33NLWqrdiihqiM=; t=1785746426; x=1786956026; b=Na+vvVHHi2WlQbuYc+BSKnzkucgBaAIu+cD7Z0HpGiRptRh +PTl1gLkbfdixyCEPSq1xNjDz6BYWTEsYigsAgfJLOYFfvy7eOsp43KngPIi202xqcq4T+DT6umjB j3/3lcHp68POP6+/mRASnbqaeFdDq1HRTNuqrYiPpeJFAgMw5sQW5X6JrUSJUKNfr8k3q/xv2Dre7 nvi+VnQuMFf7npJP0FLT0BxO8xSSOl1ks8EiBSjLpwYk7pfWFHrhAy74yMlRL/rcotGLTpHXWekTo cibQ5um1NfAXtPlvnoM9kiOw17lBQn9ihNgXgXHbgrJxDM9qwH41xvEVR+7vy/Tw==; Received: by sipsolutions.net with esmtpsa (TLS1.3:ECDHE_X25519__ECDSA_SECP256R1_SHA256__AES_256_GCM:256) (Exim 4.98.2) (envelope-from ) id 1wqoDf-000000062Az-37wW; Mon, 03 Aug 2026 10:40:24 +0200 Message-ID: <4cd5a1c8e807d064714a2f6fed46ea49d1033ace.camel@sipsolutions.net> Subject: Re: [PATCH wireless 0/1] wifi: mac80211: keep paired old chanctx alive From: Johannes Berg To: Zhiling Zou , linux-wireless@vger.kernel.org Cc: michal.kazior@tieto.com, vega@nebusec.ai Date: Mon, 03 Aug 2026 10:40:22 +0200 In-Reply-To: (sfid-20260803_063526_248734_4BF193C7) References: (sfid-20260803_063526_248734_4BF193C7) Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.60.2 (3.60.2-1.fc44) Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-malware-bazaar: not-scanned Hi, FWIW, none of your mails seem to be reaching the mailing list - I have emails sent after yours on it, so I don't think it's just a delay. > We found and validated a issue in net/mac80211/chan.c. The bug is reachab= le by a > non-root user via user and net namespace. With all these hwsim bugs I wonder - how do you get it loaded in the first place? I don't think it's very interesting if (real, non-ns) root has to load it first, basically nobody _really_ has much interest in it other than while testing/developing, and even then it'll mostly get used in VMs. I guess you could technically trigger this on real HW in a namespace, but ... again that needs real root to put it there. Not saying that makes it completely irrelevant, but all the whole "bug is reachable by non-root ..." seems to significantly overstate it? johannes