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=-7.5 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 1CAF4C43441 for ; Thu, 29 Nov 2018 14:20:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CCB3821104 for ; Thu, 29 Nov 2018 14:20:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="FgLxajly" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CCB3821104 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 S1731361AbeK3BZ7 (ORCPT ); Thu, 29 Nov 2018 20:25:59 -0500 Received: from mail.kernel.org ([198.145.29.99]:49540 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731347AbeK3BZ6 (ORCPT ); Thu, 29 Nov 2018 20:25:58 -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 98FB6205C9; Thu, 29 Nov 2018 14:20:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1543501228; bh=ldnQ2wzyABYWoJnIt20fSowFeWlPs15ACAWsvymHv4g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FgLxajlyu1sK0aEglMew7bwC7LrxKwEKwTkcr2X5YZqRg6IAJTUw7wDw5VraK2X4E ai1Hu8u3CRC5ByAF2R+pbjxvL8J+TXia3SK5R+xq+J6EN7yiN18xOjE08/k++N5Dcu 4uNZqmbBC1xlPHA5GWSMP1peQhtRKgG9swnKxnrY= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, aszlig , Milan Broz , Daniel Zatovic , Willy Tarreau Subject: [PATCH 4.4 79/86] tty: wipe buffer. Date: Thu, 29 Nov 2018 15:12:44 +0100 Message-Id: <20181129140116.150266432@linuxfoundation.org> X-Mailer: git-send-email 2.19.2 In-Reply-To: <20181129140109.832117862@linuxfoundation.org> References: <20181129140109.832117862@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review 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 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Linus Torvalds commit c9a8e5fce009e3c601a43c49ea9dbcb25d1ffac5 upstream. After we are done with the tty buffer, zero it out. Reported-by: aszlig Tested-by: Milan Broz Tested-by: Daniel Zatovic Tested-by: aszlig Cc: Willy Tarreau Signed-off-by: Greg Kroah-Hartman --- drivers/tty/tty_buffer.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/tty/tty_buffer.c +++ b/drivers/tty/tty_buffer.c @@ -454,6 +454,8 @@ receive_buf(struct tty_struct *tty, stru if (count && disc->ops->receive_buf) disc->ops->receive_buf(tty, p, f, count); } + if (count > 0) + memset(p, 0, count); return count; }