Re: compositing broken in -next (idr bug)

From: Jiri Slaby
Date: Tue Feb 12 2013 - 17:08:49 EST


On 02/12/2013 11:03 PM, Jiri Slaby wrote:
> On 02/12/2013 10:55 PM, Jiri Slaby wrote:
>> --- a/drivers/gpu/drm/drm_gem.c
>> +++ b/drivers/gpu/drm/drm_gem.c
>> @@ -453,7 +453,8 @@ drm_gem_flink_ioctl(struct drm_device *dev, void *data,
>> spin_lock(&dev->object_name_lock);
>> if (!obj->name) {
>> ret = idr_alloc(&dev->object_name_idr, obj, 1, 0,
>> GFP_NOWAIT);
>> - obj->name = ret;
>> + if (ret >= 0)
>> + obj->name = ret;
>> args->name = (uint64_t) obj->name;
>> spin_unlock(&dev->object_name_lock);
>>
>> @@ -469,6 +470,7 @@ drm_gem_flink_ioctl(struct drm_device *dev, void *data,
>> }
>>
>> err:
>> + idr_preload_end();
>> drm_gem_object_unreference_unlocked(obj);
>> return ret;
>
> Oh my, maybe: return ret < 0 ? ret : 0... Let's try.

Bull's eye.

--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -459,6 +459,7 @@ drm_gem_flink_ioctl(struct drm_device *dev, void *data,

if (ret < 0)
goto err;
+ ret = 0;

/* Allocate a reference for the name table. */
drm_gem_object_reference(obj);

--
js
suse labs
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