After unbinding drm, the user space may still owns the drm dev fd, and may still be able to call drm ioctl. Add a sanity check here to prevent that from happening. Signed-off-by: Jeffy Chen <jeffy.chen@xxxxxxxxxxxxxx> --- Changes in v5: None Changes in v4: None Changes in v3: None Changes in v2: None drivers/gpu/drm/drm_ioctl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c index 7d6deaa..15beb11 100644 --- a/drivers/gpu/drm/drm_ioctl.c +++ b/drivers/gpu/drm/drm_ioctl.c @@ -674,7 +674,7 @@ long drm_ioctl(struct file *filp, dev = file_priv->minor->dev; - if (drm_device_is_unplugged(dev)) + if (drm_device_is_unplugged(dev) || !dev->registered) return -ENODEV; is_driver_ioctl = nr >= DRM_COMMAND_BASE && nr < DRM_COMMAND_END; -- 2.1.4 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
