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openSUSE:Leap:42.3:Update
drm
0148-etnaviv-fix-gem-object-list-corruption.patch
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File 0148-etnaviv-fix-gem-object-list-corruption.patch of Package drm
From 46f062e05920a4d40dbe32aa4bc622df33db6fb2 Mon Sep 17 00:00:00 2001 From: Lucas Stach <l.stach@pengutronix.de> Date: Mon, 11 Sep 2017 15:29:31 +0200 Subject: [PATCH] etnaviv: fix gem object list corruption 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 <l.stach@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- 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) {
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