linux-kernel - Re: [PATCH tools/io_uring] tools/io_uring: correctly set "ret" for sq

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Date:   Wed, 22 Feb 2023 20:46:04 -0700
From:   Jens Axboe <axboe@...nel.dk>
To:     Ziyang Zhang <ZiyangZhang@...ux.alibaba.com>,
        asml.silence@...il.com
Cc:     io-uring@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH tools/io_uring] tools/io_uring: correctly set "ret" for
 sq_poll case

On 2/21/23 12:37?AM, Ziyang Zhang wrote:
> For sq_poll case, "ret" is not initialized or cleared/set. In this way,
> output of this test program is incorrect and we can not even stop this
> program by pressing CTRL-C.
> 
> Reset "ret" to zero in each submission/completion round, and assign
> "ret" to "this_reap".

Can you check if this issue also exists in the fio copy of this, which
is t/io_uring.c in:

git://git.kernel.dk/fio

The copy in the kernel is pretty outdated at this point, and should
probably get removed. But if the bug is in the above main version, then
we should fix it there and then ponder if we want to remove the one in
the kernel or just get it updated to match the upstream version.

-- 
Jens Axboe