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=-16.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 1EBADC433DB for ; Sun, 28 Mar 2021 08:46:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D9F946196C for ; Sun, 28 Mar 2021 08:46:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231259AbhC1Ipt (ORCPT ); Sun, 28 Mar 2021 04:45:49 -0400 Received: from mail.kernel.org ([198.145.29.99]:37910 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229542AbhC1Ipl (ORCPT ); Sun, 28 Mar 2021 04:45:41 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id C2E376196C; Sun, 28 Mar 2021 08:45:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1616921133; bh=3MfptsBDXUmNMmv4TO5l2srJOZ/R1fwboYZKKzF3mp4=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=XdLjCw4V448T8l6ky+w8KiNUISRGwRWXzlWaNEV1uhgiwRwpJTVFN+NsYiLxHuFUs 6eVbaE1k1Jqn99CJMNviWBXuribiWO9C8rMO1qyBiVdFOPzCuv18AEWLA9DuO4rSQO xYGqaY3ZM15+HWm9w81a+cU/XcwCE8qkeV28ksEA= Date: Sun, 28 Mar 2021 10:45:28 +0200 From: Greg KH To: Pavel Skripkin Cc: jirislaby@kernel.org, linux-kernel@vger.kernel.org, syzbot+bcc922b19ccc64240b42@syzkaller.appspotmail.com Subject: Re: [PATCH] tty: fix memory leak in vc_deallocate Message-ID: References: <20210327214443.21548-1-paskripkin@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210327214443.21548-1-paskripkin@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Mar 28, 2021 at 12:44:43AM +0300, Pavel Skripkin wrote: > syzbot reported memory leak in tty/vt. > The problem was in VT_DISALLOCATE ioctl cmd. > After allocating unimap with PIO_UNIMAP it wasn't > freed via VT_DISALLOCATE, but vc_cons[currcons].d was > zeroed. > > Signed-off-by: Pavel Skripkin > Reported-by: syzbot+bcc922b19ccc64240b42@syzkaller.appspotmail.com > --- > drivers/tty/vt/vt.c | 1 + > 1 file changed, 1 insertion(+) Is this patch tested by syzbot to fix the problem? thanks, greg k-h