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drm/atomic: Reject properties not part of the object.

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The legacy setprop ioctl doesn't attempt to set properties
that are not enumerated on the object. The atomic ioctl does,
fix this by validating first.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1473062773-5045-1-git-send-email-maarten.lankhorst@linux.intel.com
This commit is contained in:
Maarten Lankhorst 2016-09-05 10:06:13 +02:00 committed by Sean Paul
parent 75ac49532a
commit 4e9951d960
1 changed files with 10 additions and 1 deletions
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11
drivers/gpu/drm/drm_atomic.c
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@ -1609,7 +1609,7 @@ int drm_mode_atomic_ioctl(struct drm_device *dev,
struct drm_crtc_state *crtc_state;
unsigned plane_mask;
int ret = 0;
unsigned int i, j;
unsigned int i, j, k;
/* disallow for drivers not supporting atomic: */
if (!drm_core_check_feature(dev, DRIVER_ATOMIC))
@ -1691,6 +1691,15 @@ int drm_mode_atomic_ioctl(struct drm_device *dev,
goto out;
}
for (k = 0; k < obj->properties->count; k++)
if (obj->properties->properties[k]->base.id == prop_id)
break;
if (k == obj->properties->count) {
ret = -EINVAL;
goto out;
}
prop = drm_property_find(dev, prop_id);
if (!prop) {
drm_mode_object_unreference(obj);