From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:58163 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752399AbbLVCTy (ORCPT ); Mon, 21 Dec 2015 21:19:54 -0500 Subject: patch "coresight: checking for NULL string in coresight_name_match()" added to char-misc-next To: mathieu.poirier@linaro.org, gregkh@linuxfoundation.org, stable@vger.kernel.org, tyler.baker@linaro.org From: Date: Mon, 21 Dec 2015 18:19:37 -0800 Message-ID: <1450750777107127@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled coresight: checking for NULL string in coresight_name_match() to my char-misc git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git in the char-misc-next branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will also be merged in the next major kernel release during the merge window. If you have any questions about this process, please let me know. >>From fadf3a44e974b030e7145218ad1ab25e3ef91738 Mon Sep 17 00:00:00 2001 From: Mathieu Poirier Date: Thu, 17 Dec 2015 08:47:02 -0700 Subject: coresight: checking for NULL string in coresight_name_match() Connection child names associated to ports can sometimes be NULL, which is the case when booting a system on QEMU or when the Coresight power domain isn't switched on. This patch is adding a check to make sure a NULL string isn't fed to strcmp(), something that avoid crashing the system. Cc: # v3.18+ Reported-by: Tyler Baker Signed-off-by: Mathieu Poirier Signed-off-by: Greg Kroah-Hartman --- drivers/hwtracing/coresight/coresight.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hwtracing/coresight/coresight.c b/drivers/hwtracing/coresight/coresight.c index e25492137d8b..93738dfbf631 100644 --- a/drivers/hwtracing/coresight/coresight.c +++ b/drivers/hwtracing/coresight/coresight.c @@ -548,7 +548,7 @@ static int coresight_name_match(struct device *dev, void *data) to_match = data; i_csdev = to_coresight_device(dev); - if (!strcmp(to_match, dev_name(&i_csdev->dev))) + if (to_match && !strcmp(to_match, dev_name(&i_csdev->dev))) return 1; return 0; -- 2.6.4