From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:51345 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752149AbbFCDxh (ORCPT ); Tue, 2 Jun 2015 23:53:37 -0400 Subject: Patch "ARM: EXYNOS: Fix dereference of ERR_PTR returned by of_genpd_get_from_provider" has been added to the 4.0-stable tree To: k.kozlowski@samsung.com, gregkh@linuxfoundation.org, kgene@kernel.org Cc: , From: Date: Wed, 03 Jun 2015 12:53:28 +0900 Message-ID: <143330360820876@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 ARM: EXYNOS: Fix dereference of ERR_PTR returned by of_genpd_get_from_provider to the 4.0-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: arm-exynos-fix-dereference-of-err_ptr-returned-by-of_genpd_get_from_provider.patch and it can be found in the queue-4.0 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 0b7dc0ff95237a53287e52f1aab7408ebf1c4085 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Wed, 13 May 2015 17:45:52 +0900 Subject: ARM: EXYNOS: Fix dereference of ERR_PTR returned by of_genpd_get_from_provider From: Krzysztof Kozlowski commit 0b7dc0ff95237a53287e52f1aab7408ebf1c4085 upstream. ERR_PTR was dereferenced during sub domain parsing, if parent domain could not be obtained (because of invalid phandle or deferred registration of parent domain). The Exynos power domain code checked whether of_genpd_get_from_provider() returned NULL and in that case it skipped that power domain node. However this function returns ERR_PTR or valid pointer, not NULL. Fixes: 0f7807518fe1 ("ARM: EXYNOS: add support for sub-power domains") Signed-off-by: Krzysztof Kozlowski Signed-off-by: Kukjin Kim Signed-off-by: Greg Kroah-Hartman --- arch/arm/mach-exynos/pm_domains.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/arch/arm/mach-exynos/pm_domains.c +++ b/arch/arm/mach-exynos/pm_domains.c @@ -169,7 +169,7 @@ no_clk: args.np = np; args.args_count = 0; child_domain = of_genpd_get_from_provider(&args); - if (!child_domain) + if (IS_ERR(child_domain)) continue; if (of_parse_phandle_with_args(np, "power-domains", @@ -177,7 +177,7 @@ no_clk: continue; parent_domain = of_genpd_get_from_provider(&args); - if (!parent_domain) + if (IS_ERR(parent_domain)) continue; if (pm_genpd_add_subdomain(parent_domain, child_domain)) Patches currently in stable-queue which might be from k.kozlowski@samsung.com are queue-4.0/arm-exynos-fix-dereference-of-err_ptr-returned-by-of_genpd_get_from_provider.patch queue-4.0/arm-dts-set-display-clock-correctly-for-exynos4412-trats2.patch