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=-2.5 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, T_DKIMWL_WL_HIGH,USER_AGENT_MUTT autolearn=ham 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 AB47DC072B5 for ; Fri, 24 May 2019 19:04:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 80A0121873 for ; Fri, 24 May 2019 19:04:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1558724653; bh=+Ljjnw/DvlVxiX3j7z/OH3g1FmEAAQfgPnF+JE7yyEE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=0u70UXB8898eitnKSsmvjZnKxWi63CMzqC7A0nn96a/CD3LfuprRNtj8turEQE5Os ZZ8dMOkg1/t2GcRnyS8rZNx7yuA76dhyPqGZFNch8hooMP+62Mdaibb6TKHFmQO8ap Hd5NGfwlagihcKJXrWcigZkRhCj3oR2HHK4bF2vI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391625AbfEXTEM (ORCPT ); Fri, 24 May 2019 15:04:12 -0400 Received: from mail.kernel.org ([198.145.29.99]:35910 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727115AbfEXTEM (ORCPT ); Fri, 24 May 2019 15:04:12 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 234CE21848; Fri, 24 May 2019 19:04:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1558724651; bh=+Ljjnw/DvlVxiX3j7z/OH3g1FmEAAQfgPnF+JE7yyEE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=t4FjFl1ktvIqAo8X88jpOJF7YZjvmLLSCRSz7PCaX+05g4bof96YnxWTsFwCK+avX g+YwoGbSB9RuJ00cvmFWNR0Kaq/Q1QMem4OW4PMGWR1kwgndtDvR+aiSveIfb9BUhu JGcnMHsH5co4wSc8kkZKHxY1M1zKOlH9YplhwAXg= Date: Fri, 24 May 2019 21:04:09 +0200 From: Greg KH To: Prateek Sood Cc: rafael@kernel.org, sramana@codeaurora.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3] drivers: core: Remove glue dirs early only when refcount is 1 Message-ID: <20190524190409.GA29565@kroah.com> References: <20190501065313.GA30616@kroah.com> <1556711999-16898-1-git-send-email-prsood@codeaurora.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1556711999-16898-1-git-send-email-prsood@codeaurora.org> User-Agent: Mutt/1.11.4 (2019-03-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, May 01, 2019 at 05:29:59PM +0530, Prateek Sood wrote: > While loading firmware blobs parallely in different threads, it is possible > to free sysfs node of glue_dirs in device_del() from a thread while another > thread is trying to add subdir from device_add() in glue_dirs sysfs node. Is this the same fix that: Subject: [PATCH v4] driver core: Fix use-after-free and double free on glue directory is also trying to fix? Why is it doing so in such a different way? thanks, greg k-h