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Date: Mon, 29 Jul 2024 15:05:13 +0200
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc: Henrik Rydberg <rydberg@bitmath.org>,
	Dmitry Torokhov <dmitry.torokhov@gmail.com>,
	"linux-input@vger.kernel.org" <linux-input@vger.kernel.org>,
	LKML <linux-kernel@vger.kernel.org>,
	Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PATCH (resend)] Input: MT - limit max slots
Message-ID: <2024072944-appraisal-panning-a0b1@gregkh>
References: <a7eb34e0-28cf-4e18-b642-ea8d7959f0c7@I-love.SAKURA.ne.jp>
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In-Reply-To: <a7eb34e0-28cf-4e18-b642-ea8d7959f0c7@I-love.SAKURA.ne.jp>

On Mon, Jul 29, 2024 at 09:51:30PM +0900, Tetsuo Handa wrote:
> syzbot is reporting too large allocation at input_mt_init_slots(), for
> num_slots is supplied from userspace using ioctl(UI_DEV_CREATE).
> 
> Since nobody knows possible max slots, this patch chose 1024.
> 
> Reported-by: syzbot <syzbot+0122fa359a69694395d5@syzkaller.appspotmail.com>
> Closes: https://syzkaller.appspot.com/bug?extid=0122fa359a69694395d5
> Suggested-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
> Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
> ---
> This patch was tested in linux-next between next-20240611 and next-20240729
> via my tree. Who can take this patch? If nobody can, I will send to Linus.

What is wrong with the normal input maintainer and tree?  Why not send
it there?

thanks,

greg k-h