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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A2DFACCA46F for ; Wed, 1 Jun 2022 14:01:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1354031AbiFAOBt (ORCPT ); Wed, 1 Jun 2022 10:01:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56538 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1354110AbiFAN7l (ORCPT ); Wed, 1 Jun 2022 09:59:41 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8D6EBA207E; Wed, 1 Jun 2022 06:56:15 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id CB87A6160E; Wed, 1 Jun 2022 13:56:14 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5E6F1C3411E; Wed, 1 Jun 2022 13:56:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1654091774; bh=N3kTbKDGhwPcAfEWlQX4qmpBTCC5UMNdyrw/bUyv9r4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OthGHI4g6zkm37uqh/sV4DjKevPfdX4XizvZu2/ZsZdc5T4e9y7o3iNSQCMC0w7Y1 a9ASBIMaHcHTo4cABWGx+4/Zsmr2t2uQ4pIKRuc8D179nseeUVfKsW+qy3tmqLZnS8 RrVvkXYYlmtNjCesSj+UoA5Y15jKsyWFE2PepVyRldMWkEjIN9LXrJS2iGk65VEF3l zW/cDsmzI32A6WVRYtIv9Soj4Nhp223t4Mo7H7FZYNEg10e/co7+cM7vyUICL4ZMJR 4xTn0Qi7Yru5GIqhNfWp4VfyuL53XgrYpoxvvjMOD8xiN3nNpMhjJ5k7sYegPlHEPh N1DzIH756bblA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Steve French , Ronnie Sahlberg , Sasha Levin , sfrench@samba.org, linux-cifs@vger.kernel.org, samba-technical@lists.samba.org Subject: [PATCH AUTOSEL 5.17 44/48] smb3: check for null tcon Date: Wed, 1 Jun 2022 09:54:17 -0400 Message-Id: <20220601135421.2003328-44-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220601135421.2003328-1-sashal@kernel.org> References: <20220601135421.2003328-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org From: Steve French [ Upstream commit bbdf6cf56c88845fb0b713cbf5c6623c53fe40d8 ] Although unlikely to be null, it is confusing to use a pointer before checking for it to be null so move the use down after null check. Addresses-Coverity: 1517586 ("Null pointer dereferences (REVERSE_INULL)") Reviewed-by: Ronnie Sahlberg Signed-off-by: Steve French Signed-off-by: Sasha Levin --- fs/cifs/smb2ops.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 13080d6a140b..584b78d88db6 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -757,8 +757,8 @@ int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon, struct cifs_sb_info *cifs_sb, struct cached_fid **cfid) { - struct cifs_ses *ses = tcon->ses; - struct TCP_Server_Info *server = ses->server; + struct cifs_ses *ses; + struct TCP_Server_Info *server; struct cifs_open_parms oparms; struct smb2_create_rsp *o_rsp = NULL; struct smb2_query_info_rsp *qi_rsp = NULL; @@ -776,6 +776,9 @@ int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon, if (tcon->nohandlecache) return -ENOTSUPP; + ses = tcon->ses; + server = ses->server; + if (cifs_sb->root == NULL) return -ENOENT; -- 2.35.1