From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754175AbcDJUC5 (ORCPT ); Sun, 10 Apr 2016 16:02:57 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:53884 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932201AbcDJTIW (ORCPT ); Sun, 10 Apr 2016 15:08:22 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Harald Hoyer , Jarkko Sakkinen Subject: [PATCH 4.4 086/210] tpm_eventlog.c: fix binary_bios_measurements Date: Sun, 10 Apr 2016 11:35:07 -0700 Message-Id: <20160410183529.669803231@linuxfoundation.org> X-Mailer: git-send-email 2.8.0 In-Reply-To: <20160410183526.651820045@linuxfoundation.org> References: <20160410183526.651820045@linuxfoundation.org> User-Agent: quilt/0.64 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org 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: Harald Hoyer commit 186d124f07da193a8f47e491af85cb695d415f2f upstream. The commit 0cc698af36ff ("vTPM: support little endian guests") copied the event, but without the event data, did an endian conversion on the size and tried to output the event data from the copied version, which has only have one byte of the data, resulting in garbage event data. [jarkko.sakkinen@linux.intel.com: fixed minor coding style issues and renamed the local variable tempPtr as temp_ptr now that there is an excuse to do this.] Signed-off-by: Harald Hoyer Fixes: 0cc698af36ff ("vTPM: support little endian guests") Reviewed-by: Jarkko Sakkinen Signed-off-by: Greg Kroah-Hartman --- drivers/char/tpm/tpm_eventlog.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) --- a/drivers/char/tpm/tpm_eventlog.c +++ b/drivers/char/tpm/tpm_eventlog.c @@ -232,7 +232,7 @@ static int tpm_binary_bios_measurements_ { struct tcpa_event *event = v; struct tcpa_event temp_event; - char *tempPtr; + char *temp_ptr; int i; memcpy(&temp_event, event, sizeof(struct tcpa_event)); @@ -242,10 +242,16 @@ static int tpm_binary_bios_measurements_ temp_event.event_type = do_endian_conversion(event->event_type); temp_event.event_size = do_endian_conversion(event->event_size); - tempPtr = (char *)&temp_event; + temp_ptr = (char *) &temp_event; - for (i = 0; i < sizeof(struct tcpa_event) + temp_event.event_size; i++) - seq_putc(m, tempPtr[i]); + for (i = 0; i < (sizeof(struct tcpa_event) - 1) ; i++) + seq_putc(m, temp_ptr[i]); + + temp_ptr = (char *) v; + + for (i = (sizeof(struct tcpa_event) - 1); + i < (sizeof(struct tcpa_event) + temp_event.event_size); i++) + seq_putc(m, temp_ptr[i]); return 0;