From patchwork Wed Nov 16 14:24:05 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Berger X-Patchwork-Id: 9431711 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 0B96160469 for ; Wed, 16 Nov 2016 14:24:25 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EFE1E28910 for ; Wed, 16 Nov 2016 14:24:24 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E3E9328F10; Wed, 16 Nov 2016 14:24:24 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.sourceforge.net (lists.sourceforge.net [216.34.181.88]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 6346A28910 for ; Wed, 16 Nov 2016 14:24:24 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=sfs-ml-2.v29.ch3.sourceforge.com) by sfs-ml-2.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1c718P-0002rN-Lf; Wed, 16 Nov 2016 14:24:21 +0000 Received: from sog-mx-3.v43.ch3.sourceforge.com ([172.29.43.193] helo=mx.sourceforge.net) by sfs-ml-2.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1c718N-0002r2-KT for tpmdd-devel@lists.sourceforge.net; Wed, 16 Nov 2016 14:24:19 +0000 X-ACL-Warn: Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]) by sog-mx-3.v43.ch3.sourceforge.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.76) id 1c718M-0000BG-Rp for tpmdd-devel@lists.sourceforge.net; Wed, 16 Nov 2016 14:24:19 +0000 Received: from pps.filterd (m0098404.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.17/8.16.0.17) with SMTP id uAGENUL7123083 for ; Wed, 16 Nov 2016 09:24:13 -0500 Received: from e32.co.us.ibm.com (e32.co.us.ibm.com [32.97.110.150]) by mx0a-001b2d01.pphosted.com with ESMTP id 26rnse9q3n-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Wed, 16 Nov 2016 09:24:13 -0500 Received: from localhost by e32.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Wed, 16 Nov 2016 07:24:09 -0700 Received: from b03cxnp08027.gho.boulder.ibm.com (b03cxnp08027.gho.boulder.ibm.com [9.17.130.19]) by d03dlp03.boulder.ibm.com (Postfix) with ESMTP id DA4F119D8026; Wed, 16 Nov 2016 07:23:30 -0700 (MST) Received: from b03ledav003.gho.boulder.ibm.com (b03ledav003.gho.boulder.ibm.com [9.17.130.234]) by b03cxnp08027.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id uAGEO8nF38010938; Wed, 16 Nov 2016 07:24:08 -0700 Received: from b03ledav003.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 45F826A054; Wed, 16 Nov 2016 07:24:08 -0700 (MST) Received: from sbct-3.watson.ibm.com (unknown [9.2.141.158]) by b03ledav003.gho.boulder.ibm.com (Postfix) with ESMTP id BB73E6A047; Wed, 16 Nov 2016 07:24:07 -0700 (MST) From: Stefan Berger To: jarkko.sakkinen@linux.intel.com, tpmdd-devel@lists.sourceforge.net, nayna@linux.vnet.ibm.com Date: Wed, 16 Nov 2016 09:24:05 -0500 X-Mailer: git-send-email 2.5.5 X-TM-AS-GCONF: 00 X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16111614-0004-0000-0000-000010DDEAD7 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00006088; HX=3.00000240; KW=3.00000007; PH=3.00000004; SC=3.00000189; SDB=6.00781485; UDB=6.00376981; IPR=6.00558994; BA=6.00004886; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00013345; XFM=3.00000011; UTC=2016-11-16 14:24:10 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16111614-0005-0000-0000-00007AA192EA Message-Id: <1479306245-14456-1-git-send-email-stefanb@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2016-11-16_06:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1609300000 definitions=main-1611160233 X-Headers-End: 1c718M-0000BG-Rp Subject: [tpmdd-devel] [PATCH] tpm: vtpm_proxy: Do not access host's event log X-BeenThere: tpmdd-devel@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: Tpm Device Driver maintainance List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: tpmdd-devel-bounces@lists.sourceforge.net X-Virus-Scanned: ClamAV using ClamSMTP The virtual TPM driver must not access the hosts's event log, otherwise we get crashes from that. Signed-off-by: Stefan Berger --- drivers/char/tpm/tpm_eventlog.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/char/tpm/tpm_eventlog.c b/drivers/char/tpm/tpm_eventlog.c index fb603a7..e0abf40 100644 --- a/drivers/char/tpm/tpm_eventlog.c +++ b/drivers/char/tpm/tpm_eventlog.c @@ -369,6 +369,9 @@ static int tpm_read_log(struct tpm_chip *chip) { int rc; + if (chip->flags & TPM_CHIP_FLAG_VIRTUAL) + return -EFAULT; + if (chip->log.bios_event_log != NULL) { dev_dbg(&chip->dev, "%s: ERROR - event log already initialized\n",