linux-kernel - Re: [PATCH 1/1] io_uring/sqpoll: do not allow pinning outside of cpuset

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Message-ID: <5237b4c0-973f-44cc-a6ee-08302871fd19@kernel.dk>
Date: Wed, 18 Sep 2024 00:16:41 -0600
From: Jens Axboe <axboe@...nel.dk>
To: "Lai, Yi" <yi1.lai@...ux.intel.com>,
 Felix Moessbauer <felix.moessbauer@...mens.com>
Cc: asml.silence@...il.com, linux-kernel@...r.kernel.org,
 io-uring@...r.kernel.org, cgroups@...r.kernel.org, dqminh@...udflare.com,
 longman@...hat.com, adriaan.schmidt@...mens.com,
 florian.bezdeka@...mens.com, stable@...r.kernel.org,
 syzkaller-bugs@...glegroups.com, pengfei.xu@...el.com, yi1.lai@...el.com
Subject: Re: [PATCH 1/1] io_uring/sqpoll: do not allow pinning outside of
 cpuset

On 9/17/24 9:56 PM, Lai, Yi wrote:
> Hi Felix Moessbauer,
> 
> Greetings!
> 
> I used Syzkaller and found that there is KASAN: use-after-free Read in io_sq_offload_create in Linux-next tree - next-20240916.
> 
> After bisection and the first bad commit is:
> "
> f011c9cf04c0 io_uring/sqpoll: do not allow pinning outside of cpuset
> "

This is known and fixed:

https://git.kernel.dk/cgit/linux/commit/?h=for-6.12/io_uring&id=a09c17240bdf2e9fa6d0591afa9448b59785f7d4

-- 
Jens Axboe