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=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 7CBA0C433E0 for ; Sun, 21 Jun 2020 08:45:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5C64120771 for ; Sun, 21 Jun 2020 08:45:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729551AbgFUIpc (ORCPT ); Sun, 21 Jun 2020 04:45:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37244 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729509AbgFUIpc (ORCPT ); Sun, 21 Jun 2020 04:45:32 -0400 Received: from nautica.notk.org (ipv6.notk.org [IPv6:2001:41d0:1:7a93::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E676BC061794 for ; Sun, 21 Jun 2020 01:45:31 -0700 (PDT) Received: by nautica.notk.org (Postfix, from userid 1001) id 0BA2CC01A; Sun, 21 Jun 2020 10:45:28 +0200 (CEST) Date: Sun, 21 Jun 2020 10:45:13 +0200 From: Dominique Martinet To: Alexander Kapshuk Cc: lucho@ionkov.net, ericvh@gmail.com, davem@davemloft.net, kuba@kernel.org, v9fs-developer@lists.sourceforge.net, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] net/9p: Validate current->sighand in client.c Message-ID: <20200621084512.GA720@nautica> References: <20200618190807.GA20699@nautica> <20200620201456.14304-1-alexander.kapshuk@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20200620201456.14304-1-alexander.kapshuk@gmail.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Alexander Kapshuk wrote on Sat, Jun 20, 2020: > Use (un)lock_task_sighand instead of spin_lock_irqsave and > spin_unlock_irqrestore to ensure current->sighand is a valid pointer as > suggested in the email referenced below. Thanks for v2! Patch itself looks good to me. I always add another `Link:` tag to the last version of the patch at the time of applying, so the message might be a bit confusing. Feel free to keep the link to the previous discussion but I'd rather just repeat a bit more of what we discussed (e.g. fix rcu not being dereferenced cleanly by using the task helpers as suggested) rather than just link to the thread Sorry for nitpicking but I think commit messages are important and it's better if they're understandable out of context, even if you give a link for further details for curious readers, it helps being able to just skim through git log. Either way I'll include the patch in my test run today or tomorrow, had promised it for a while... Cheers, -- Dominique