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

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Message-ID: <ZupxZeILxuKqFsRq@ly-workstation>
Date: Wed, 18 Sep 2024 14:21:25 +0800
From: "Lai, Yi" <yi1.lai@...ux.intel.com>
To: Jens Axboe <axboe@...nel.dk>
Cc: Felix Moessbauer <felix.moessbauer@...mens.com>, 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

Thanks for reply. I will include lkp into search database before sending
out fuzzing findings.

Regards,
Yi Lai

On Wed, Sep 18, 2024 at 12:16:41AM -0600, Jens Axboe wrote:
> 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