From: Jens Axboe <axboe@kernel.dk>
To: io-uring@vger.kernel.org, Stefan Metzmacher <metze@samba.org>,
asml.silence@gmail.com
Cc: stable@vger.kernel.org
Subject: Re: [PATCH 1/1] io_uring/net: fix fast_iov assignment in io_setup_async_msg()
Date: Thu, 29 Sep 2022 07:13:02 -0600 [thread overview]
Message-ID: <166445718246.10317.17940058168765174614.b4-ty@kernel.dk> (raw)
In-Reply-To: <b2e7be246e2fb173520862b0c7098e55767567a2.1664436949.git.metze@samba.org>
On Thu, 29 Sep 2022 09:39:10 +0200, Stefan Metzmacher wrote:
> I hit a very bad problem during my tests of SENDMSG_ZC.
> BUG(); in first_iovec_segment() triggered very easily.
> The problem was io_setup_async_msg() in the partial retry case,
> which seems to happen more often with _ZC.
>
> iov_iter_iovec_advance() may change i->iov in order to have i->iov_offset
> being only relative to the first element.
>
> [...]
Applied, thanks!
[1/1] io_uring/net: fix fast_iov assignment in io_setup_async_msg()
commit: 3e4cb6ebbb2bad201c1186bc0b7e8cf41dd7f7e6
Best regards,
--
Jens Axboe
prev parent reply other threads:[~2022-09-29 13:13 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cover.1664436949.git.metze@samba.org>
2022-09-29 7:39 ` [PATCH 1/1] io_uring/net: fix fast_iov assignment in io_setup_async_msg() Stefan Metzmacher
2022-09-29 12:53 ` Pavel Begunkov
2022-09-29 13:13 ` Jens Axboe [this message]
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