Received: by 2002:a05:6a10:f347:0:0:0:0 with SMTP id d7csp1199238pxu; Fri, 27 Nov 2020 02:01:18 -0800 (PST) X-Google-Smtp-Source: ABdhPJx/HnXILyCpWKtzcInkLw/QZJnW9v4LLfHMlgOwAkUImd2rH+/gGOjLdliDvB38Uy6cN2JJ X-Received: by 2002:aa7:c448:: with SMTP id n8mr6859788edr.10.1606471278389; Fri, 27 Nov 2020 02:01:18 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1606471278; cv=none; d=google.com; s=arc-20160816; b=kKGpujbuIHYv4jLoSddf4nSf4h2LclcEdjXDIOg/cGtfzPhKihDRNyHRk5se4lXbxb FZjaAVIMMW2zN7OMUaLVK23S0rrUMP6Ved2F0qi00fRnPZ648tQOI02fkQYvj+Ihk3HR INNdE3OqIrqKbXWQZTBaD0b21h1ml1Jnw7+M82tJHNeTShUW6OS/0UHu3b624M/966BI duPsGYOXp6xekW6S152xhafQsdFY2svU1+p7ENXDRQgX5Z7mOBH2Q4tSk3IXotxwkdnM 9zyE6eIcuQH1Oi3T1ujEZxuf4RNOVrMu6Da8yKemDPrtX6Y+tam5xnQkQt933IkD655R mSfg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:user-agent:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date; bh=X5Tnyt+jgdbVuJMerED5o5pmT7f1qyMFEm7SVGDtOuw=; b=sARh1pmzCK8IbIUy3GrWop8uXTvrPRRYzRnXOF6U72PACS6EhvzP/+7CbgdH330Vo1 VcKSPEI558oHaTvnT6RXkjs2TI1o5P2vDKhiGFLVWB2zMVezEwPNhrc29HCnjSoNlL+6 kNyXpfzh20/OcnO30B5cbulQnCNQ702I3mAVK1coyW7WxFlh2QNxIQwWe90d+6Spxo2H RTrpt1CRnsAVrDY3q7alRo3yERkl0XmkoSptx7QhXTkaM/Q3HiVxEuYxKqfCCv/XFVWD q0be0V6WWX3+2nDdnh/rl1l3xDDrap5pFz9vbArDcmyxae8fCVs5j7SQJxCSDXcSp9Ka rfrg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id d12si1164992edh.221.2020.11.27.02.00.56; Fri, 27 Nov 2020 02:01:18 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-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-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728829AbgK0J5M (ORCPT + 99 others); Fri, 27 Nov 2020 04:57:12 -0500 Received: from elvis.franken.de ([193.175.24.41]:32813 "EHLO elvis.franken.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728165AbgK0J5M (ORCPT ); Fri, 27 Nov 2020 04:57:12 -0500 Received: from uucp (helo=alpha) by elvis.franken.de with local-bsmtp (Exim 3.36 #1) id 1kiaV3-000709-02; Fri, 27 Nov 2020 10:57:09 +0100 Received: by alpha.franken.de (Postfix, from userid 1000) id 5CBD3C02A6; Fri, 27 Nov 2020 10:33:41 +0100 (CET) Date: Fri, 27 Nov 2020 10:33:41 +0100 From: Thomas Bogendoerfer To: Qinglang Miao Cc: Serge Semin , linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] mips: cdmm: fix use-after-free in mips_cdmm_bus_discover Message-ID: <20201127093341.GC4859@alpha.franken.de> References: <20201120074847.31369-1-miaoqinglang@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201120074847.31369-1-miaoqinglang@huawei.com> User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Nov 20, 2020 at 03:48:47PM +0800, Qinglang Miao wrote: > kfree(dev) has been called inside put_device so anther > kfree would cause a use-after-free bug/ > > Fixes: 8286ae03308c ("MIPS: Add CDMM bus support") > Reported-by: Hulk Robot > Signed-off-by: Qinglang Miao > --- > drivers/bus/mips_cdmm.c | 1 - > 1 file changed, 1 deletion(-) applied with braces removal to mips-next. Thomas. -- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea. [ RFC1925, 2.3 ]