From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 713E7C32771 for ; Sun, 19 Jan 2020 02:25:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 44CDF2469A for ; Sun, 19 Jan 2020 02:25:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="iwVk3BA2" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728750AbgASCZQ (ORCPT ); Sat, 18 Jan 2020 21:25:16 -0500 Received: from mail-pf1-f196.google.com ([209.85.210.196]:44235 "EHLO mail-pf1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727403AbgASCZQ (ORCPT ); Sat, 18 Jan 2020 21:25:16 -0500 Received: by mail-pf1-f196.google.com with SMTP id 62so7295606pfu.11 for ; Sat, 18 Jan 2020 18:25:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=dTrZCBkewhR6vLVB77oZ0SSXBeG8KYL0GW7GFSN+FnE=; b=iwVk3BA21WLg5/7JVvxKRP3tCyVtKvzjKIoNMvuGX5cDpYc48Povn0zMkaoY4Go0Rc MAREiZJfgBOmDRv609TJ0sjPSPgGGnjFU8gaO+itqtY98JJA7lGh4tQFej7cH+g4MALM DVl164Bd1qTyr0+mfZoF4XoXADe7ctw1r2+dpK4Ed1rtSE+imA4WqJtnPkwuViFuqPAO aoJyAEWl47gcDZbfd6OUs3Mn2eQBUItA5mKmKvD2MrrCf+wXzssIxvyNQpuoVLeEQIz2 gp93Tb/hJJGN3dnWUUkwzA/G/W9UE0BWF54hggRHr1/gCozwM1OKrFYjcOFjGYBK512Q 9AQA== 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=dTrZCBkewhR6vLVB77oZ0SSXBeG8KYL0GW7GFSN+FnE=; b=C+yFWdkxmX4QA64WIK9n5l05be+7JdCJWI8NRgehOT3JrCvBkg+8SEiOgeRcSEU3NR Q9j8mxmVWG1SyGctUxtzncyvDWu928tNgQG4t7ouDFddoCbnq7CA/yYkEujflReKci3N atnyQxh4WNLk617dQm3zJ2hmfGoSm4wNmsUiQBNJBedbn8fTLtad7Y9WKTncJ5ZvbF7z nwZOMoZuEWVbquZ6Hf+IvhH3RqyaZ4XWFC77tMnOqbXIe7rFvGW8r0DYY1/3zOkQYC35 98E0B7weQYH5/+LPKbpK4mm8Hc4LNJOql6a472tyToU/0leLleI00LoSpmGqg5RxPsmt PP0g== X-Gm-Message-State: APjAAAVfdpyoTWiguWKWexVUf1ERu4hKqll8Ueru4Lb0yIPa1egU/2JD YvyMpfTaxS3oBI+dpq0DX5k= X-Google-Smtp-Source: APXvYqy4jV3Jx6p9CNZk9DaObz5rsgtr6HZxKEhG54e1AQVylDXjSigIJEe6E9TCNTooRShc49cXBA== X-Received: by 2002:a63:f643:: with SMTP id u3mr50862475pgj.291.1579400715911; Sat, 18 Jan 2020 18:25:15 -0800 (PST) Received: from localhost ([43.224.245.179]) by smtp.gmail.com with ESMTPSA id b65sm33984060pgc.18.2020.01.18.18.25.15 (version=TLS1_2 cipher=AES128-SHA bits=128/128); Sat, 18 Jan 2020 18:25:15 -0800 (PST) Date: Sun, 19 Jan 2020 10:25:13 +0800 From: chenqiwu To: Viresh Kumar Cc: mmayer@broadcom.com, bcm-kernel-feedback-list@broadcom.com, rjw@rjwysocki.net, f.fainelli@gmail.com, linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v2] cpufreq: brcmstb-avs-cpufreq: avoid potential stuck and UAF risk Message-ID: <20200119022513.GA21407@cqw-OptiPlex-7050> References: <1578228650-17157-1-git-send-email-qiwuchen55@gmail.com> <20200106055637.zq4icl5klg4wpvkx@vireshk-i7> <20200106070910.GA17897@cqw-OptiPlex-7050> <20200106073109.ndm7enzyznquqps5@vireshk-i7> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200106073109.ndm7enzyznquqps5@vireshk-i7> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org On Mon, Jan 06, 2020 at 01:01:09PM +0530, Viresh Kumar wrote: > On 06-01-20, 15:09, chenqiwu wrote: > > There could be a case as the description of this patch besides > > brcm_avs_driver unloads. Since cpufreq_policy_free() will free > > the mm of cpufreq_policy at the last moment. > > Ahh, right. Please fix the other "policy" thing I reported and resend > the patch then. > > -- > viresh Hi, Any progress about this patch? Qiwu