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=-6.1 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 A4293C07E85 for ; Tue, 11 Dec 2018 15:51:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6CED420880 for ; Tue, 11 Dec 2018 15:51:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1544543464; bh=ZShHpVnuuL/xjVxHnef/pKWMk+2XiMoqV21r/CH7YFw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=fG+But9752Oo5W/izEi4bmWlPZNkf6LDvHa6PHwsvfgmfZRe7VnmgKZyT4PHmuOz+ Drl057wXi+ripUZ5rP09mRVs3Ighzaf0aD5xUaukml/x4ax0LKFjR8VKBBGaUiKFov WyBYxBzwY8gQVJNrN5XnppcQ/qCyvlTk7GtFZcAw= DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6CED420880 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729413AbeLKPvC (ORCPT ); Tue, 11 Dec 2018 10:51:02 -0500 Received: from mail.kernel.org ([198.145.29.99]:39602 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728634AbeLKPvA (ORCPT ); Tue, 11 Dec 2018 10:51:00 -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 F410C20855; Tue, 11 Dec 2018 15:50:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1544543459; bh=ZShHpVnuuL/xjVxHnef/pKWMk+2XiMoqV21r/CH7YFw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TMWq7FW59meD3ztxm9kvEOjXfk47wo3wPVJ5grPGTvyp5ypmU1FNgjB+4Xk8EERGJ 26XfTDBEc6y45G1lw7iHHKRDuZnQBNGWu0qecc8RSTQqqnB43hKsl07gQt7aFu1JWu fgUWEt80k+l/CdOTRBxh2puFCHxc4q0JAIdtdM2M= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Chuck Lever , stable@kernel.org, Trond Myklebust Subject: [PATCH 4.9 32/51] SUNRPC: Fix leak of krb5p encode pages Date: Tue, 11 Dec 2018 16:41:40 +0100 Message-Id: <20181211151616.755917173@linuxfoundation.org> X-Mailer: git-send-email 2.20.0 In-Reply-To: <20181211151612.328911565@linuxfoundation.org> References: <20181211151612.328911565@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 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Chuck Lever commit 8dae5398ab1ac107b1517e8195ed043d5f422bd0 upstream. call_encode can be invoked more than once per RPC call. Ensure that each call to gss_wrap_req_priv does not overwrite pointers to previously allocated memory. Signed-off-by: Chuck Lever Cc: stable@kernel.org Signed-off-by: Trond Myklebust Signed-off-by: Greg Kroah-Hartman --- net/sunrpc/auth_gss/auth_gss.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/net/sunrpc/auth_gss/auth_gss.c +++ b/net/sunrpc/auth_gss/auth_gss.c @@ -1736,6 +1736,7 @@ priv_release_snd_buf(struct rpc_rqst *rq for (i=0; i < rqstp->rq_enc_pages_num; i++) __free_page(rqstp->rq_enc_pages[i]); kfree(rqstp->rq_enc_pages); + rqstp->rq_release_snd_buf = NULL; } static int @@ -1744,6 +1745,9 @@ alloc_enc_pages(struct rpc_rqst *rqstp) struct xdr_buf *snd_buf = &rqstp->rq_snd_buf; int first, last, i; + if (rqstp->rq_release_snd_buf) + rqstp->rq_release_snd_buf(rqstp); + if (snd_buf->page_len == 0) { rqstp->rq_enc_pages_num = 0; return 0;