Re: [PATCH] io_uring: Add NULL checks for current->io_uring

From: Jia-Ju Bai
Date: Wed Jan 11 2023 - 21:10:41 EST




On 2023/1/11 22:49, Jens Axboe wrote:
On 1/11/23 3:19 AM, Jia-Ju Bai wrote:
As described in a previous commit 998b30c3948e, current->io_uring could
be NULL, and thus a NULL check is required for this variable.

In the same way, other functions that access current->io_uring also
require NULL checks of this variable.
This seems odd. Have you actually seen traces of this, or is it just
based on "guess it can be NULL sometimes, check it in all spots"?


Thanks for the reply!
I checked the previous commit and inferred that there may be some problems.
I am not quite sure of this, and thus want to listen to your opinions :)


Best wishes,
Jia-Ju Bai