On Mon, Jan 23, 2023 at 03:03:24PM +0000, Pavel Begunkov wrote:
> [ upstream commit 8579538c89e33ce78be2feb41e07489c8cbf8f31 ]
>
> IORING_SETUP_R_DISABLED rings don't have the submitter task set, so
> it's not always safe to use ->submitter_task. Disallow posting msg_ring
> messaged to disabled rings. Also add task NULL check for loosy sync
> around testing for IORING_SETUP_R_DISABLED.
>
> Cc: stable@xxxxxxxxxxxxxxx
> Fixes: 6d043ee1164ca ("io_uring: do msg_ring in target task via tw")
This commit is only in 6.2-rc1, so is it really relevant for this commit
to go to 6.1?
thanks,
greg k-h
