From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Lezcano Subject: Re: [PATCH] cpuidle: fix number of initialized/destroyed states Date: Mon, 07 Jan 2013 23:56:36 +0100 Message-ID: <50EB52A4.10307@linaro.org> References: <1357585921-3391-1-git-send-email-krzysiek@podlesie.net> <339419841.p0RXgOP6cW@vostro.rjw.lan> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mail-we0-f173.google.com ([74.125.82.173]:62048 "EHLO mail-we0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754131Ab3AGW4h (ORCPT ); Mon, 7 Jan 2013 17:56:37 -0500 Received: by mail-we0-f173.google.com with SMTP id z2so10501069wey.18 for ; Mon, 07 Jan 2013 14:56:36 -0800 (PST) In-Reply-To: <339419841.p0RXgOP6cW@vostro.rjw.lan> Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: "Rafael J. Wysocki" Cc: Krzysztof Mazur , linux-kernel@vger.kernel.org, Linux PM list , Lists Linaro-dev On 01/07/2013 10:58 PM, Rafael J. Wysocki wrote: > Hi, >=20 > Thanks for the patch! >=20 > I'd like Daniel to have a look at it still. I agree with this patch. I was about to send exactly the same. Thanks Krzysztof for fixing this. > On Monday, January 07, 2013 08:12:01 PM Krzysztof Mazur wrote: >> Commit bf4d1b5ddb78f86078ac6ae0415802d5f0c68f92 (cpuidle: support >> multiple drivers) changed the number of initialized state kobjects >> in cpuidle_add_state_sysfs() from device->state_count to drv->state_= count, >> but leaved device->state_count in cpuidle_remove_state_sysfs(). >> Those two values might have different values, causing for instance >> NULL pointer dereference in cpuidle_remove_state_sysfs(). >> >> Signed-off-by: Krzysztof Mazur Acked-by: Daniel Lezcano --=20 Linaro.org =E2=94=82 Open source software for= ARM SoCs =46ollow Linaro: Facebook | Twitter | Blog