Re: [PATCH -next 8/8] block: fix null-pointer dereference in ioc_pd_init

[Christoph Hellwig]

On Mon, Nov 28, 2022 at 11:44:34PM +0800, Li Nan wrote:
> Fix problem by moving rq_qos_exit() to disk_release().

No, that now means it is removed to later.  You need to add proper
synchronization.