From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:59254 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751131AbdJBMuk (ORCPT ); Mon, 2 Oct 2017 08:50:40 -0400 Subject: Patch "etnaviv: fix gem object list corruption" has been added to the 4.9-stable tree To: l.stach@pengutronix.de, gregkh@linuxfoundation.org Cc: , From: Date: Mon, 02 Oct 2017 14:50:38 +0200 Message-ID: <1506948638190253@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 etnaviv: fix gem object list corruption to the 4.9-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: etnaviv-fix-gem-object-list-corruption.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 518417525f3652c12fb5fad6da4ade66c0072fa3 Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Mon, 11 Sep 2017 15:29:31 +0200 Subject: etnaviv: fix gem object list corruption From: Lucas Stach commit 518417525f3652c12fb5fad6da4ade66c0072fa3 upstream. All manipulations of the gem_object list need to be protected by the list mutex, as GEM objects can be created and freed in parallel. This fixes a kernel memory corruption. Signed-off-by: Lucas Stach Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/etnaviv/etnaviv_gem.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/gpu/drm/etnaviv/etnaviv_gem.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.c @@ -549,12 +549,15 @@ static const struct etnaviv_gem_ops etna void etnaviv_gem_free_object(struct drm_gem_object *obj) { struct etnaviv_gem_object *etnaviv_obj = to_etnaviv_bo(obj); + struct etnaviv_drm_private *priv = obj->dev->dev_private; struct etnaviv_vram_mapping *mapping, *tmp; /* object should not be active */ WARN_ON(is_active(etnaviv_obj)); + mutex_lock(&priv->gem_lock); list_del(&etnaviv_obj->gem_node); + mutex_unlock(&priv->gem_lock); list_for_each_entry_safe(mapping, tmp, &etnaviv_obj->vram_list, obj_node) { Patches currently in stable-queue which might be from l.stach@pengutronix.de are queue-4.9/etnaviv-fix-gem-object-list-corruption.patch