Re: [PATCH 5.11] io_uring: NULL files dereference by SQPOLL

Pavel Begunkov
2020-11-08T11:42:23Z

On 08/11/2020 06:50, Josef wrote:
>> Josef, could you try this one?
>
> the null files dereference error no longer occurs, but after a certain
> point in time the OP_READ operation always returns -EFAULT

That confirms the issue, and for efaults, as describes, I expect them to
start falling out after the task-creator exits or do exec. Just to note
that the patch only propagates errors and doesn't change the semantics.

>
> BTW forgot to mention that the NULL files dereference error only
> occurs when OP_READ returns a -EFAULT
--
Pavel Begunkov