提交 a0a0bde3 编写于 作者: T Takashi Iwai 提交者: Daniel Vetter

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: NTakashi Iwai <tiwai@suse.de>
[danvet: Add note that just dropping the event is ok.]
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
上级 e2beb6cd
无相关合并请求
...@@ -527,6 +527,7 @@ ssize_t drm_read(struct file *filp, char __user *buffer, ...@@ -527,6 +527,7 @@ ssize_t drm_read(struct file *filp, char __user *buffer,
if (copy_to_user(buffer + total, if (copy_to_user(buffer + total,
e->event, e->event->length)) { e->event, e->event->length)) {
total = -EFAULT; total = -EFAULT;
e->destroy(e);
break; break;
} }
......
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