drm: Fix memory leak at error path of drm_read()
Note that the read manpages explicitly states that the read position
is undefined on error. Since EFAULT is just a userspace bug we are
therefore fine with just dropping the event on the floor.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
[danvet: Add note that just dropping the event is ok.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c
index 91e1105..0b9514b 100644
--- a/drivers/gpu/drm/drm_fops.c
+++ b/drivers/gpu/drm/drm_fops.c
@@ -527,6 +527,7 @@
if (copy_to_user(buffer + total,
e->event, e->event->length)) {
total = -EFAULT;
+ e->destroy(e);
break;
}