Re: [PATCH V1] block: Fix null pointer dereference issue on struct io_cq

[Christoph Hellwig]

On Wed, May 17, 2023 at 06:20:19PM +0900, Damien Le Moal wrote:
> twice for the same icq. The missing rcu lock in ioc_exit_icqs() already was in
> itself a bug, and the missing flag check is another.

spinlocks imply a rcu critical section, no need to duplicate it.