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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 D77E1C3B1A4 for ; Fri, 14 Feb 2020 17:02:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A15E720656 for ; Fri, 14 Feb 2020 17:02:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581699750; bh=3lggvye2TNtsXGcR8Lo/AZGOvArFDvKoC+VW/0FRLvE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Aw5+aLU2ScJL3itrOBiU2N+kCv+nu8rHTATrSpYVd9q0yhmzar5pqg4AGL43GeWXv v5YBP+7JhOR49ICSlwmx+EdBgrD3KR0y58UWURRVN4ZwGRATwzOARvfV9AA4ATX7V3 ByXCnlpQW0nldVoNNLO4fL8/vv58vO9OpDQiAyT0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2394355AbgBNRC2 (ORCPT ); Fri, 14 Feb 2020 12:02:28 -0500 Received: from mail.kernel.org ([198.145.29.99]:46736 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404229AbgBNQQH (ORCPT ); Fri, 14 Feb 2020 11:16:07 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A516F246FF; Fri, 14 Feb 2020 16:16:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581696967; bh=3lggvye2TNtsXGcR8Lo/AZGOvArFDvKoC+VW/0FRLvE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=aKb5MAmPPKp3Sl/75EYzBKmzNpdPcf97DUOR+Cai4ERr1wFpTDFYgigpB9pYThxlY vR0PjWnSaZk7JArckWkI4cdC7G2tnhAUJ1mHlan5gtRw4GUKVnwUB7FPNZMCKIHYnl zKZEy5xioCeoeonhHr1FAcLFTDkhsldNMk9N1QpA= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Mika Westerberg , Andy Shevchenko , Sasha Levin , platform-driver-x86@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 206/252] platform/x86: intel_mid_powerbtn: Take a copy of ddata Date: Fri, 14 Feb 2020 11:11:01 -0500 Message-Id: <20200214161147.15842-206-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200214161147.15842-1-sashal@kernel.org> References: <20200214161147.15842-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Mika Westerberg [ Upstream commit 5e0c94d3aeeecc68c573033f08d9678fecf253bd ] The driver gets driver_data from memory that is marked as const (which is probably put to read-only memory) and it then modifies it. This likely causes some sort of fault to happen. Fix this by taking a copy of the structure. Fixes: c94a8ff14de3 ("platform/x86: intel_mid_powerbtn: make mid_pb_ddata const") Signed-off-by: Mika Westerberg Reviewed-by: Andy Shevchenko Signed-off-by: Andy Shevchenko Signed-off-by: Sasha Levin --- drivers/platform/x86/intel_mid_powerbtn.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/platform/x86/intel_mid_powerbtn.c b/drivers/platform/x86/intel_mid_powerbtn.c index 5ad44204a9c3c..10dbd6cac48ae 100644 --- a/drivers/platform/x86/intel_mid_powerbtn.c +++ b/drivers/platform/x86/intel_mid_powerbtn.c @@ -158,9 +158,10 @@ static int mid_pb_probe(struct platform_device *pdev) input_set_capability(input, EV_KEY, KEY_POWER); - ddata = (struct mid_pb_ddata *)id->driver_data; + ddata = devm_kmemdup(&pdev->dev, (void *)id->driver_data, + sizeof(*ddata), GFP_KERNEL); if (!ddata) - return -ENODATA; + return -ENOMEM; ddata->dev = &pdev->dev; ddata->irq = irq; -- 2.20.1