Received: by 2002:a25:ab43:0:0:0:0:0 with SMTP id u61csp860525ybi; Fri, 24 May 2019 12:40:31 -0700 (PDT) X-Google-Smtp-Source: APXvYqxZ2VQHCCNVfybAFgtkmUw+UeVLtR4b8CCIHO61Adc0ZUO3jyeFUWuzEQITPzByr/U/+NuR X-Received: by 2002:a63:4d56:: with SMTP id n22mr79985890pgl.307.1558726831617; Fri, 24 May 2019 12:40:31 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1558726831; cv=none; d=google.com; s=arc-20160816; b=qxISFx30ETp9LWR6sr8HmdFsaBf3QIJxzqQmDatARqyYPor3PKcTh2iM/357hFc0CN q2VmTiUrTPx80nIuF9nO31mJvjjiemT17Nmz3m5ORvjFGagUJy3uen5U06vtfgmEJeXx XgksO/eefbaoCFICAs/gzxRJoQBEjTr3xa6V5Swh8vNEBn/IQGPLdBwldRB2thbztZuf Irf3JFVAkSJtAKQ7kx3NyIUmZEe/OF1Yjl/vIFGOGbxWFYPq6jUj4DC4QFTkH27sYkPa mLo/mJUMAKLixjE2EsmuNablMqblgF57yiuCZwL3F6ee67r+6Ne1Q+AoJFFPLgV3l65E 9fmg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:user-agent:references :message-id:in-reply-to:subject:cc:to:from:date; bh=9r7RBCwcaW16E8Ir13NexUdSn7+JTG05kbIAllBsXVI=; b=lcWuIBTku4BLhKqdE5fTLg8ub090LtkR1IsDTkJjzQ+hQ3aRtayauP7/uDvUjbiNsE sQHLpqeuNMfJ8NlTeEJH2Yz3dTVYRcGlU6D8+fOq1tHPQIW/JF8fXSx+DCJBJc9zBYrK JeNj7QoCkUpFn24WcZ8vFzAPyWsQ+kAos9TgCG/uGZ3SJ1e92FxKL2PuvWYDzwoblfYv 2dBTE3fb+NqRdDc/cfSZdg5sxuvoQxnAwP4vrluopcMLhtRG+6siS2+x926jyaTkJx8v OdOJzyDIBKiGZLj5/2uf+1TPYSFEHEzjUxrMOf1wKMK/QMZNiNM+T4S2jrB0ZpAIg1bk DxaA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id 204si5142671pgc.141.2019.05.24.12.40.16; Fri, 24 May 2019 12:40:31 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391503AbfEXTim (ORCPT + 99 others); Fri, 24 May 2019 15:38:42 -0400 Received: from namei.org ([65.99.196.166]:34320 "EHLO namei.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730068AbfEXTil (ORCPT ); Fri, 24 May 2019 15:38:41 -0400 Received: from localhost (localhost [127.0.0.1]) by namei.org (8.14.4/8.14.4) with ESMTP id x4OJcdxh008796; Fri, 24 May 2019 19:38:39 GMT Date: Sat, 25 May 2019 05:38:39 +1000 (AEST) From: James Morris To: David Howells cc: keyrings@vger.kernel.org, linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/7] keys: sparse: Fix key_fs[ug]id_changed() In-Reply-To: <155856409010.10428.11692778420533145488.stgit@warthog.procyon.org.uk> Message-ID: References: <155856408314.10428.17035328117829912815.stgit@warthog.procyon.org.uk> <155856409010.10428.11692778420533145488.stgit@warthog.procyon.org.uk> User-Agent: Alpine 2.21 (LRH 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 22 May 2019, David Howells wrote: > Sparse warnings are incurred by key_fs[ug]id_changed() due to unprotected > accesses of tsk->cred, which is marked __rcu. > > Fix this by passing the new cred struct to these functions from > commit_creds() rather than the task pointer. > > Signed-off-by: David Howells Reviewed-by: James Morris -- James Morris