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=-10.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 70B1BC43387 for ; Mon, 7 Jan 2019 12:58:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 388F5206BB for ; Mon, 7 Jan 2019 12:58:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1546865922; bh=uC8bQhr7vA1U0vobe1Xh0Rmjk/lAhtyZ2vdWrv44/EY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=SL4L8jbdOQkd76jZtbUjebA/oM73IQ3Yp8pOR6v0hO2F9NdFMf383MT2HTu/WttJC gqFFlG8FnebFMGVzA/kgIb4Ga3Co7fcx81L6sSurTOT6TomthNllCDwMmbut6mMLyv 4X37JikGS1MZeeq9qf40nNwwJAw24hc8EeDdsr4s= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730032AbfAGM6l (ORCPT ); Mon, 7 Jan 2019 07:58:41 -0500 Received: from mail.kernel.org ([198.145.29.99]:46258 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730018AbfAGM6j (ORCPT ); Mon, 7 Jan 2019 07:58:39 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 57615206BB; Mon, 7 Jan 2019 12:58:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1546865918; bh=uC8bQhr7vA1U0vobe1Xh0Rmjk/lAhtyZ2vdWrv44/EY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VOEpOpu1Li81kvESJQjIXvL4Tup4x/mc4+D+BUzhRYR6ncHQRN6AHUxauouZv76lN pLIx2/9MUWwk9MhpyAbm3HGntEHy/fBXyL8uA8QhwbAU4TUfSSDjwozc/xn1DXSikb SeAqWhHITRrX5VEDsyxRXwywp48N6rUVrCjx/UR0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Paul Aurich , Yves-Alexis Perez , Steve French , Ronnie Sahlberg Subject: [PATCH 4.19 158/170] smb3: fix large reads on encrypted connections Date: Mon, 7 Jan 2019 13:33:05 +0100 Message-Id: <20190107104511.589810428@linuxfoundation.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190107104452.953560660@linuxfoundation.org> References: <20190107104452.953560660@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Paul Aurich commit 6d2f84eee098540ae857998fe32f29b9e2cd9613 upstream. When passing a large read to receive_encrypted_read(), ensure that the demultiplex_thread knows that a MID was processed. Without this, those operations never complete. This is a similar issue/fix to lease break handling: commit 7af929d6d05ba5564139718e30d5bc96bdbc716a ("smb3: fix lease break problem introduced by compounding") CC: Stable # 4.19+ Fixes: b24df3e30cbf ("cifs: update receive_encrypted_standard to handle compounded responses") Signed-off-by: Paul Aurich Tested-by: Yves-Alexis Perez Signed-off-by: Steve French Reviewed-by: Ronnie Sahlberg Signed-off-by: Greg Kroah-Hartman --- fs/cifs/smb2ops.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -3184,8 +3184,10 @@ smb3_receive_transform(struct TCP_Server } /* TODO: add support for compounds containing READ. */ - if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server)) + if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server)) { + *num_mids = 1; return receive_encrypted_read(server, &mids[0]); + } return receive_encrypted_standard(server, mids, bufs, num_mids); }