Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753848AbcCMAhP (ORCPT ); Sat, 12 Mar 2016 19:37:15 -0500 Received: from mailout.easymail.ca ([64.68.201.169]:33729 "EHLO mailout.easymail.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753089AbcCMAhI (ORCPT ); Sat, 12 Mar 2016 19:37:08 -0500 X-Spam-Flag: NO X-Spam-Score: -3.692 From: Shuah Khan To: mchehab@osg.samsung.com Cc: Shuah Khan , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] media: add dump_stack() if called in atomic context Date: Sat, 12 Mar 2016 17:37:05 -0700 Message-Id: <1457829425-4411-1-git-send-email-shuahkh@osg.samsung.com> X-Mailer: git-send-email 2.5.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 968 Lines: 35 Change media_add_link() and media_devnode_create() to dump_stack when called in atomic context. Signed-off-by: Shuah Khan Suggested-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index e95070b..66a5392 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -570,6 +570,9 @@ static struct media_link *media_add_link(struct list_head *head) { struct media_link *link; + if (in_atomic()) + dump_stack(); + link = kzalloc(sizeof(*link), GFP_KERNEL); if (link == NULL) return NULL; @@ -891,6 +894,9 @@ struct media_intf_devnode *media_devnode_create(struct media_device *mdev, { struct media_intf_devnode *devnode; + if (in_atomic()) + dump_stack(); + devnode = kzalloc(sizeof(*devnode), GFP_KERNEL); if (!devnode) return NULL; -- 2.5.0