From: Jens Axboe <axboe@kernel.dk>
To: Colin King <colin.king@canonical.com>,
Pavel Begunkov <asml.silence@gmail.com>,
io-uring@vger.kernel.org
Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH][next] io_uring: Fix a read of ununitialized pointer tctx
Date: Fri, 3 Sep 2021 06:16:53 -0600 [thread overview]
Message-ID: <5e5e1bb9-c5d3-d668-8a61-f70538ef92df@kernel.dk> (raw)
In-Reply-To: <20210903113535.11257-1-colin.king@canonical.com>
On 9/3/21 5:35 AM, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
>
> In the unlikely case where ctx->flags & IORING_SETUP_SQPOLL is true
> and sqd is NULL the pointer tctx is not assigned a valid value and
> can contain a garbage value when it is dereferenced. Fix this by
> initializing it to NULL.
Doh - thanks, I folded this one in.
--
Jens Axboe
prev parent reply other threads:[~2021-09-03 12:16 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-03 11:35 [PATCH][next] io_uring: Fix a read of ununitialized pointer tctx Colin King
2021-09-03 12:16 ` Jens Axboe [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=5e5e1bb9-c5d3-d668-8a61-f70538ef92df@kernel.dk \
--to=axboe@kernel.dk \
--cc=asml.silence@gmail.com \
--cc=colin.king@canonical.com \
--cc=io-uring@vger.kernel.org \
--cc=kernel-janitors@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).