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=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, 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 1579FC43460 for ; Mon, 17 May 2021 15:14:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E8824610FA for ; Mon, 17 May 2021 15:14:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243477AbhEQPOL (ORCPT ); Mon, 17 May 2021 11:14:11 -0400 Received: from mail.kernel.org ([198.145.29.99]:45116 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242582AbhEQPD6 (ORCPT ); Mon, 17 May 2021 11:03:58 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 4FFF861A30; Mon, 17 May 2021 14:28:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1621261688; bh=tNVJ+LDtBX91Fx5MjoR9ruWpDQ+/PZ5ajZRw+uohgOg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tzRnx5BjXYugUpUON18p8stkXP1CqZ4qepLXCiAYogsfCxf02Ur1u7FOs61NlIEvH PdFEniYZY4CK5d8XGFoRcoEgoztm1aGR0a3UYt31EXqPBLlY0kM8ZISF6C4+jUBryB jVbOc5v1HkmtFmfnKHJ3V7zVWVffS6/YoHR3Mgmk= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Miklos Szeredi , Sasha Levin Subject: [PATCH 5.10 052/289] virtiofs: fix userns Date: Mon, 17 May 2021 15:59:37 +0200 Message-Id: <20210517140306.955759648@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210517140305.140529752@linuxfoundation.org> References: <20210517140305.140529752@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Miklos Szeredi [ Upstream commit 0a7419c68a45d2d066b996be5087aa2d07ce80eb ] get_user_ns() is done twice (once in virtio_fs_get_tree() and once in fuse_conn_init()), resulting in a reference leak. Also looks better to use fsc->user_ns (which *should* be the current_user_ns() at this point). Signed-off-by: Miklos Szeredi Signed-off-by: Sasha Levin --- fs/fuse/virtio_fs.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/fs/fuse/virtio_fs.c b/fs/fuse/virtio_fs.c index f0a7f1b7b75f..b9cfb1165ff4 100644 --- a/fs/fuse/virtio_fs.c +++ b/fs/fuse/virtio_fs.c @@ -1457,8 +1457,7 @@ static int virtio_fs_get_tree(struct fs_context *fsc) return -ENOMEM; } - fuse_conn_init(fc, fm, get_user_ns(current_user_ns()), - &virtio_fs_fiq_ops, fs); + fuse_conn_init(fc, fm, fsc->user_ns, &virtio_fs_fiq_ops, fs); fc->release = fuse_free_conn; fc->delete_stale = true; fc->auto_submounts = true; -- 2.30.2