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 80357C54EBE for ; Mon, 16 Jan 2023 15:57:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230439AbjAPP53 (ORCPT ); Mon, 16 Jan 2023 10:57:29 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38658 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231575AbjAPP5G (ORCPT ); Mon, 16 Jan 2023 10:57:06 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E601E15543 for ; Mon, 16 Jan 2023 07:56:48 -0800 (PST) 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 7E0A961030 for ; Mon, 16 Jan 2023 15:56:48 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8D31DC433F0; Mon, 16 Jan 2023 15:56:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1673884607; bh=dkdohJDEl1IesWSAYNd0A29hwys0C34LS9RHYFPeMBA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VJgetxWJDUC6TvG9iMiUJezm+pYqq2gawj2qM/cL87/ixYfV+Vhbl37FvmlfHRR3u mzNIpzDhaRTYQSyncYhCjRmrsrmH/sSExQQHZiCETGTI0xvO/PxFjZYTjsjLHKDKGg X84IVcitpBMm+6sA+5v7IZPDuL43yUYvmqpExGnI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, "Paulo Alcantara (SUSE)" , Steve French Subject: [PATCH 6.1 040/183] cifs: fix file info setting in cifs_open_file() Date: Mon, 16 Jan 2023 16:49:23 +0100 Message-Id: <20230116154805.077616563@linuxfoundation.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230116154803.321528435@linuxfoundation.org> References: <20230116154803.321528435@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Paulo Alcantara commit ba5d4c1596cada37793d405dd18d695cd3508902 upstream. In cifs_open_file(), @buf must hold a pointer to a cifs_open_info_data structure which is passed by cifs_nt_open(), so assigning @buf directly to @fi was obviously wrong. Fix this by passing a valid FILE_ALL_INFO structure to SMBLegacyOpen() and CIFS_open(), and then copy the set structure to the corresponding cifs_open_info_data::fi field with move_cifs_info_to_smb2() helper. Link: https://bugzilla.kernel.org/show_bug.cgi?id=216889 Fixes: 76894f3e2f71 ("cifs: improve symlink handling for smb2+") Signed-off-by: Paulo Alcantara (SUSE) Signed-off-by: Steve French Signed-off-by: Greg Kroah-Hartman --- fs/cifs/smb1ops.c | 54 ++++++++++++++++++++++++----------------------- 1 file changed, 28 insertions(+), 26 deletions(-) diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c index 5fe2c2f8ef41..4cb364454e13 100644 --- a/fs/cifs/smb1ops.c +++ b/fs/cifs/smb1ops.c @@ -719,17 +719,25 @@ cifs_mkdir_setinfo(struct inode *inode, const char *full_path, static int cifs_open_file(const unsigned int xid, struct cifs_open_parms *oparms, __u32 *oplock, void *buf) { - FILE_ALL_INFO *fi = buf; + struct cifs_open_info_data *data = buf; + FILE_ALL_INFO fi = {}; + int rc; if (!(oparms->tcon->ses->capabilities & CAP_NT_SMBS)) - return SMBLegacyOpen(xid, oparms->tcon, oparms->path, - oparms->disposition, - oparms->desired_access, - oparms->create_options, - &oparms->fid->netfid, oplock, fi, - oparms->cifs_sb->local_nls, - cifs_remap(oparms->cifs_sb)); - return CIFS_open(xid, oparms, oplock, fi); + rc = SMBLegacyOpen(xid, oparms->tcon, oparms->path, + oparms->disposition, + oparms->desired_access, + oparms->create_options, + &oparms->fid->netfid, oplock, &fi, + oparms->cifs_sb->local_nls, + cifs_remap(oparms->cifs_sb)); + else + rc = CIFS_open(xid, oparms, oplock, &fi); + + if (!rc && data) + move_cifs_info_to_smb2(&data->fi, &fi); + + return rc; } static void @@ -1053,7 +1061,7 @@ cifs_make_node(unsigned int xid, struct inode *inode, struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); struct inode *newinode = NULL; int rc = -EPERM; - FILE_ALL_INFO *buf = NULL; + struct cifs_open_info_data buf = {}; struct cifs_io_parms io_parms; __u32 oplock = 0; struct cifs_fid fid; @@ -1085,14 +1093,14 @@ cifs_make_node(unsigned int xid, struct inode *inode, cifs_sb->local_nls, cifs_remap(cifs_sb)); if (rc) - goto out; + return rc; rc = cifs_get_inode_info_unix(&newinode, full_path, inode->i_sb, xid); if (rc == 0) d_instantiate(dentry, newinode); - goto out; + return rc; } /* @@ -1100,19 +1108,13 @@ cifs_make_node(unsigned int xid, struct inode *inode, * support block and char device (no socket & fifo) */ if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL)) - goto out; + return rc; if (!S_ISCHR(mode) && !S_ISBLK(mode)) - goto out; + return rc; cifs_dbg(FYI, "sfu compat create special file\n"); - buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); - if (buf == NULL) { - rc = -ENOMEM; - goto out; - } - oparms.tcon = tcon; oparms.cifs_sb = cifs_sb; oparms.desired_access = GENERIC_WRITE; @@ -1127,21 +1129,21 @@ cifs_make_node(unsigned int xid, struct inode *inode, oplock = REQ_OPLOCK; else oplock = 0; - rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, buf); + rc = tcon->ses->server->ops->open(xid, &oparms, &oplock, &buf); if (rc) - goto out; + return rc; /* * BB Do not bother to decode buf since no local inode yet to put * timestamps in, but we can reuse it safely. */ - pdev = (struct win_dev *)buf; + pdev = (struct win_dev *)&buf.fi; io_parms.pid = current->tgid; io_parms.tcon = tcon; io_parms.offset = 0; io_parms.length = sizeof(struct win_dev); - iov[1].iov_base = buf; + iov[1].iov_base = &buf.fi; iov[1].iov_len = sizeof(struct win_dev); if (S_ISCHR(mode)) { memcpy(pdev->type, "IntxCHR", 8); @@ -1160,8 +1162,8 @@ cifs_make_node(unsigned int xid, struct inode *inode, d_drop(dentry); /* FIXME: add code here to set EAs */ -out: - kfree(buf); + + cifs_free_open_info(&buf); return rc; } -- 2.39.0