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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 71A07C433FF for ; Wed, 14 Aug 2019 17:22:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3F05E206C2 for ; Wed, 14 Aug 2019 17:22:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1565803342; bh=hCgr0/7hadj/Z1Ak1ssKJSqfrRjV0yt0Iiv3obLQrfo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=HoVyOA/7czaPQFpJp5tjC04IjvqLRMDH970xwPXisUMo0o8Qx7N4ZB3Dk/usTINgP gHX0yfJS6a1zneBbjOmvOvNGw5Fd5PmAI4rlK0DZ+/DfrsmMnQ+ndVt2RMPqEK8SIX f93AuFmahjFfwHjbY9jYzgY6VRMEeNTsFFnw+Smk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730199AbfHNRIp (ORCPT ); Wed, 14 Aug 2019 13:08:45 -0400 Received: from mail.kernel.org ([198.145.29.99]:58828 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728649AbfHNRIl (ORCPT ); Wed, 14 Aug 2019 13:08:41 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 772B22084D; Wed, 14 Aug 2019 17:08:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1565802521; bh=hCgr0/7hadj/Z1Ak1ssKJSqfrRjV0yt0Iiv3obLQrfo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nyE9xSufYmW53wxmKRCu0+KElmWUbTDUFEzO1AokacUkDg7gsJZHNmyHPfy39iiP8 uPoqVaT+9qJUcN7AjUbXEZUVE+vC2mfIWqBXKIChTzPvbcl7mA2g+cVCfiLS7Tt+TF eOrCfsZs6Kqq4xMG9M6rJ5T6rP+aS03XrQUXU+Fk= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, syzbot+199ea16c7f26418b4365@syzkaller.appspotmail.com, Oliver Neukum , Dmitry Torokhov Subject: [PATCH 4.19 14/91] Input: usbtouchscreen - initialize PM mutex before using it Date: Wed, 14 Aug 2019 19:00:37 +0200 Message-Id: <20190814165750.373364516@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190814165748.991235624@linuxfoundation.org> References: <20190814165748.991235624@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Oliver Neukum commit b55d996f057bf2e7ba9422a80b5e17e99860cb0b upstream. Mutexes shall be initialized before they are used. Fixes: 12e510dbc57b2 ("Input: usbtouchscreen - fix deadlock in autosuspend") Reported-by: syzbot+199ea16c7f26418b4365@syzkaller.appspotmail.com Signed-off-by: Oliver Neukum Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov Signed-off-by: Greg Kroah-Hartman --- drivers/input/touchscreen/usbtouchscreen.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/input/touchscreen/usbtouchscreen.c +++ b/drivers/input/touchscreen/usbtouchscreen.c @@ -1672,6 +1672,8 @@ static int usbtouch_probe(struct usb_int if (!usbtouch || !input_dev) goto out_free; + mutex_init(&usbtouch->pm_mutex); + type = &usbtouch_dev_info[id->driver_info]; usbtouch->type = type; if (!type->process_pkt)