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Date: Wed, 6 Sep 2017 15:47:05 +0200
From: Greg KH <gregkh@linuxfoundation.org>
To: Zhenhua <lizhenhuajiyang@163.com>
Cc: jslaby@suse.com, mingo@kernel.org, andriy.shevchenko@linux.intel.com,
        mail@maciej.szmigiero.name, mgorman@suse.de, safinaskar@mail.ru,
        mhocko@suse.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/1] drivers/tty: check for null pointer
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On Wed, Sep 06, 2017 at 09:38:11PM +0800, Zhenhua wrote:
> The parameter "handler" is not checked, which may cause system
> crash on some broken devices.

Then those broken drivers need to be fixed.

What specific in-kernel drivers have this problem?

thanks,

greg k-h