From patchwork Mon Dec 28 12:44:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 353421 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=-18.8 required=3.0 tests=BAYES_00,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 E9FFBC433E6 for ; Mon, 28 Dec 2020 15:04:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C185D22472 for ; Mon, 28 Dec 2020 15:04:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733033AbgL1PEG (ORCPT ); Mon, 28 Dec 2020 10:04:06 -0500 Received: from mail.kernel.org ([198.145.29.99]:46286 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2439728AbgL1OMD (ORCPT ); Mon, 28 Dec 2020 09:12:03 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id E77AC207B2; Mon, 28 Dec 2020 14:11:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1609164708; bh=c4uzeTj50vlQD7eHvOSJxiqzCvF4akCT+NmJ+f63u88=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jgoelqScNYEDX1GE+GJWopDBVgFyLoDUft1YyGTmvkNsOznGkqxlkIIYsjTW9P6cn fcGg4K/G5jOvPvAGdezMpKyagr5YYZAPrAoFLs0Od3JSTgD1WkJ8/TtpSidWdP2RJR 12b+bBam/D7OPfRLhh3Ich1BkUXoX7u8PVVHrB6g= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Trond Myklebust , Sasha Levin Subject: [PATCH 5.10 269/717] NFSv4: Fix the alignment of page data in the getdeviceinfo reply Date: Mon, 28 Dec 2020 13:44:27 +0100 Message-Id: <20201228125033.901340432@linuxfoundation.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201228125020.963311703@linuxfoundation.org> References: <20201228125020.963311703@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Trond Myklebust [ Upstream commit 046e5ccb4198b990190e11fb52fd9cfd264402eb ] We can fit the device_addr4 opaque data padding in the pages. Fixes: cf500bac8fd4 ("SUNRPC: Introduce rpc_prepare_reply_pages()") Signed-off-by: Trond Myklebust Signed-off-by: Sasha Levin --- fs/nfs/nfs4xdr.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index c6dbfcae75171..c16b93df1bc14 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -3009,15 +3009,19 @@ static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req, struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; + uint32_t replen; encode_compound_hdr(xdr, req, &hdr); encode_sequence(xdr, &args->seq_args, &hdr); + + replen = hdr.replen + op_decode_hdr_maxsz; + encode_getdeviceinfo(xdr, args, &hdr); - /* set up reply kvec. Subtract notification bitmap max size (2) - * so that notification bitmap is put in xdr_buf tail */ + /* set up reply kvec. device_addr4 opaque data is read into the + * pages */ rpc_prepare_reply_pages(req, args->pdev->pages, args->pdev->pgbase, - args->pdev->pglen, hdr.replen - 2); + args->pdev->pglen, replen + 2 + 1); encode_nops(&hdr); }