Received: by 2002:a05:6358:16cc:b0:ea:6187:17c9 with SMTP id r12csp8235459rwl; Sat, 31 Dec 2022 02:08:06 -0800 (PST) X-Google-Smtp-Source: AMrXdXtPFBsz30mquATTpLPPr9/ZN//8isQmTmwhbiPQmQWdA6Ra78U8wmAHiXybX4wfULvfc7bm X-Received: by 2002:a17:90a:7142:b0:226:19ea:5c2a with SMTP id g2-20020a17090a714200b0022619ea5c2amr12857754pjs.43.1672481285874; Sat, 31 Dec 2022 02:08:05 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1672481285; cv=none; d=google.com; s=arc-20160816; b=sAaKO8biQO6g9ZJ7ftb1m9A+6veNgJmyJ80gEkUj2eyOnWUaik4NGxvKy52D1lDiTv sKsPKXNt1WBBD97AmrOcqkd1qR01RDvFwInWdHVD1OLawF2S9sZ7Wr9n3LEAqb2TX0Mw K+r1A4z8NEIMABHL2stqiZp/qNkV9ABN+O4nCzmYRyPi3uOKAkTYKjdWILNICsKS3zg2 a4XiL9v5KCW3YYfId2eavJxG/WQGb4Fhl9zK8YQa7D9+pCM/NPOnjydFzydB7C5O/brj amWJuWrRsnVXF4n8J15xbjhWhBaBsCVfjIXpbz78wYVVIFAS2ywBLmEFpvRItgFlla3i LmCg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date:dkim-signature; bh=AXXOh/RY6WDMCQPMGkbuxwLrHQ9KX6rDRlQcTaOGsqo=; b=KWNI0Og5GTdAf5CKjwURim34buXrxo6uS6gBcIACYKjk/W3mZVQmlPLGWqfp+Bpy2+ qHboj0jCFKv6nQHm0HlBJftuiHBSGUW89OEcEYNu1uASRZJ5v+d6U8Jm4tRvLgejjOJk z5E9xemzCZ/PGXBCehAqlhMjs/MTT/Xird3o5lcSNQdzLV0Gwo8lnkvByCzmiFXb+ftY xgTCVm9+cUMwqO4n7dKSMWOLelgM+MJFnASI+ziJycYQH73xAxLLKuCdrGY0qU+u4mnY DcKLfz58x9ujWAu2l+AEsU7JvSUII/BLdMr9D9YUJfLFuRFmoOqi/lLxnwY/jyDg9oqM fadA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linuxfoundation.org header.s=korg header.b=hE08b1hg; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linuxfoundation.org Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id il16-20020a17090b165000b00200ad6b1554si30394995pjb.6.2022.12.31.02.07.56; Sat, 31 Dec 2022 02:08:05 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@linuxfoundation.org header.s=korg header.b=hE08b1hg; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linuxfoundation.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229757AbiLaJ5W (ORCPT + 62 others); Sat, 31 Dec 2022 04:57:22 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60204 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229514AbiLaJ5T (ORCPT ); Sat, 31 Dec 2022 04:57:19 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2E5C3E0BD for ; Sat, 31 Dec 2022 01:57:18 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id C707BB802C4 for ; Sat, 31 Dec 2022 09:57:16 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3469EC433EF; Sat, 31 Dec 2022 09:57:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1672480635; bh=AXXOh/RY6WDMCQPMGkbuxwLrHQ9KX6rDRlQcTaOGsqo=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=hE08b1hgNn0QNDUXcxgqBA25nWgMPQVoaySOwt2XjEibMBlH0NVcAFUL1wMhOj516 q1XKmOf/19l81ZFGTbuor2/8OgkdL0KCtZuXwTzRX4zXKU53zoDPSPkytydOSd2xJ3 g3HR0Z5TeHmVizar0W7TluODc7RA+wa8+CxsyUS0= Date: Sat, 31 Dec 2022 10:57:13 +0100 From: Greg KH To: Yoochan Lee Cc: matt.hsiao@hpe.com, arnd@arndb.de, linux-kernel@vger.kernel.org Subject: Re: [PATCH] misc: hpilo: Fix use-after-free in ilo_open Message-ID: References: <20221231055310.2040648-1-yoochan1026@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20221231055310.2040648-1-yoochan1026@gmail.com> X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Dec 31, 2022 at 02:53:10PM +0900, Yoochan Lee wrote: > A race condition may occur if the user physically removes the > hpilo device while calling open(). How did you test any of this, and how can you remove one of these devices like this? thanks, greg k-h