From: Pavel Begunkov <asml.silence@gmail.com>
To: Jens Axboe <axboe@kernel.dk>, Dan Carpenter <dan.carpenter@oracle.com>
Cc: linux-fsdevel@vger.kernel.org, io-uring@vger.kernel.org,
kernel-janitors@vger.kernel.org
Subject: Re: [PATCH] io_uring: fix a use after free in io_async_task_func()
Date: Wed, 8 Jul 2020 22:28:51 +0300 [thread overview]
Message-ID: <66d2af76-eee0-e30d-44e5-ed70d9d808a5@gmail.com> (raw)
In-Reply-To: <58b9349b-22fd-e474-c746-2d3b542f5b23@kernel.dk>
On 08/07/2020 22:15, Jens Axboe wrote:
> On 7/8/20 12:47 PM, Dan Carpenter wrote:
>> The "apoll" variable is freed and then used on the next line. We need
>> to move the free down a few lines.
>
> Thanks for spotting this Dan, applied.
I wonder why gcc can't find it... It shouldn't be hard to do after
marking free-like functions with an attribute.
Are there such tools for the kernel?
--
Pavel Begunkov
next prev parent reply other threads:[~2020-07-08 19:30 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-08 18:47 [PATCH] io_uring: fix a use after free in io_async_task_func() Dan Carpenter
2020-07-08 19:01 ` Pavel Begunkov
2020-07-08 19:14 ` Jens Axboe
2020-07-08 19:15 ` Jens Axboe
2020-07-08 19:28 ` Pavel Begunkov [this message]
2020-07-08 19:56 ` Matthew Wilcox
2020-07-09 9:47 ` Pavel Begunkov
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