From: Jens Axboe <axboe@kernel.dk>
To: Ammar Faizi <ammarfaizi2@gnuweeb.org>
Cc: "Chen, Rong A" <rong.a.chen@intel.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Alviro Iskandar Setiawan <alviro.iskandar@gmail.com>,
io-uring Mailing list <io-uring@vger.kernel.org>,
GNU/Weeb Mailing List <gwml@gnuweeb.org>,
Dan Carpenter <dan.carpenter@oracle.com>,
Pavel Begunkov <asml.silence@gmail.com>,
Tea Inside Mailing List <timl@vger.teainside.org>,
kernel test robot <lkp@intel.com>
Subject: Re: [PATCH io_uring-5.17 v2] io_uring: Clean up a false-positive warning from GCC 9.3.0
Date: Mon, 07 Feb 2022 08:38:22 -0700 [thread overview]
Message-ID: <164424830208.19639.16912208440698766253.b4-ty@kernel.dk> (raw)
In-Reply-To: <20220207140533.565411-1-ammarfaizi2@gnuweeb.org>
On Mon, 7 Feb 2022 21:05:33 +0700, Ammar Faizi wrote:
> From: Alviro Iskandar Setiawan <alviro.iskandar@gmail.com>
>
> In io_recv(), if import_single_range() fails, the @flags variable is
> uninitialized, then it will goto out_free.
>
> After the goto, the compiler doesn't know that (ret < min_ret) is
> always true, so it thinks the "if ((flags & MSG_WAITALL) ..." path
> could be taken.
>
> [...]
Applied, thanks!
[1/1] io_uring: Clean up a false-positive warning from GCC 9.3.0
commit: 0d7c1153d9291197c1dc473cfaade77acb874b4b
Best regards,
--
Jens Axboe
next prev parent reply other threads:[~2022-02-07 15:38 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <61f5a2fa./zZ+BkSwdkmvxv7x%lkp@intel.com>
2022-01-30 9:11 ` [ammarfaizi2-block:testing/io_uring-sendto-recvfrom.v1] BUILD SUCCESS 68d110c39241b887ec388cd3316dbedb85b0cbcf Ammar Faizi
2022-02-07 6:13 ` Chen, Rong A
2022-02-07 11:43 ` [PATCH io_uring-5.17] io_uring: Fix build error potential reading uninitialized value Ammar Faizi
2022-02-07 13:45 ` Jens Axboe
2022-02-07 14:05 ` [PATCH io_uring-5.17 v2] io_uring: Clean up a false-positive warning from GCC 9.3.0 Ammar Faizi
2022-02-07 15:38 ` Jens Axboe [this message]
2022-02-07 14:20 ` [PATCH io_uring-5.17] io_uring: Fix build error potential reading uninitialized value Dan Carpenter
2022-02-07 14:33 ` Alviro Iskandar Setiawan
2022-02-07 15:37 ` Jens Axboe
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