The user can pass bad data into kgsl_ioctl_gpuobj_sync(). If _copy_from_user() fails do to bad data, undo any current references taken through this ioctl call. Bug: 74237606 Change-Id: I56195520b9dadba20ee419658fc2cbb282b8449c Signed-off-by: Carter Cooper <ccooper@codeaurora.org> Signed-off-by: samit vats <svats@codeaurora.org>