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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 7EFABC3815B for ; Wed, 15 Apr 2020 13:13:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5474420857 for ; Wed, 15 Apr 2020 13:13:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586956426; bh=FtXTfofnjxnh+C0trmA6BpW36cW+yD3+qYSHdl9Ug4M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=FU7brH29H9f/2H3zbNgE2lSzH3ZEvYppcVhGSaJCXy+Mf6Rm8RNS1BGS16O2Ru5vc WA7zKl9xPGJBByZP/WdivCo51+QRdLEasvH0TYkogfMOEHr9c78z7RU3vgBXpazzss +UJJYDRcv5YCrzKA0qNeDD3jHEdI015R1IRTCFlE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S370669AbgDONNl (ORCPT ); Wed, 15 Apr 2020 09:13:41 -0400 Received: from mail.kernel.org ([198.145.29.99]:55014 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2897049AbgDOLfZ (ORCPT ); Wed, 15 Apr 2020 07:35:25 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A02AE20737; Wed, 15 Apr 2020 11:35:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586950525; bh=FtXTfofnjxnh+C0trmA6BpW36cW+yD3+qYSHdl9Ug4M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KxW4A6k8wrrZ3JErvUi5HdHPMuvtpGUv6wrHvOIIAj6N0T4eCKYvgRx6qLZ+Ig4Xf A1odxLHabbXq7kpgE6mkGflz+9H3EYiqyPferC5xkHy5MlLwlzg+5aBH1WBAB2u4k4 Ukr7U9U3YinEYzkyzEkvw97KOP2zYm1THDJecM4U= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Trond Myklebust , Sasha Levin , linux-nfs@vger.kernel.org Subject: [PATCH AUTOSEL 5.6 034/129] NFS: alloc_nfs_open_context() must use the file cred when available Date: Wed, 15 Apr 2020 07:33:09 -0400 Message-Id: <20200415113445.11881-34-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200415113445.11881-1-sashal@kernel.org> References: <20200415113445.11881-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Trond Myklebust [ Upstream commit 1d179d6bd67369a52edea8562154b31ee20be1cc ] If we're creating a nfs_open_context() for a specific file pointer, we must use the cred assigned to that file. Fixes: a52458b48af1 ("NFS/NFSD/SUNRPC: replace generic creds with 'struct cred'.") Signed-off-by: Trond Myklebust Signed-off-by: Sasha Levin --- fs/nfs/inode.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 11bf15800ac99..a10fb87c6ac33 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -959,16 +959,16 @@ struct nfs_open_context *alloc_nfs_open_context(struct dentry *dentry, struct file *filp) { struct nfs_open_context *ctx; - const struct cred *cred = get_current_cred(); ctx = kmalloc(sizeof(*ctx), GFP_KERNEL); - if (!ctx) { - put_cred(cred); + if (!ctx) return ERR_PTR(-ENOMEM); - } nfs_sb_active(dentry->d_sb); ctx->dentry = dget(dentry); - ctx->cred = cred; + if (filp) + ctx->cred = get_cred(filp->f_cred); + else + ctx->cred = get_current_cred(); ctx->ll_cred = NULL; ctx->state = NULL; ctx->mode = f_mode; -- 2.20.1