On Wed, May 10, 2023 at 05:17:04PM +0800, wangyouwan wrote: > After waking up from sleep, 100% of the time it occurred. I suspected > that there was a firmware issue with the machine I was debugging, but > other machines did not notice it. Therefore, I attempted to make a > modification here to avoid it Okay then I suggest to investigate what causes the ->msgs to be NULL and fix that. When the transfer function is called we expect there to be something to be sent out so this should not happen.