linux-kernel - Re: 回复: 回复: [PATCH v2] usb: gadget: function: printer: fix use-after-free in __lock

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Message-ID: <20200618082818.GA1058534@kroah.com>
Date:   Thu, 18 Jun 2020 10:28:18 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     "Zhang, Qiang" <Qiang.Zhang@...driver.com>
Cc:     "balbi@...nel.org" <balbi@...nel.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: 回复: 回复: [PATCH v2] usb: gadget: function: printer: fix
 use-after-free in __lock_acquire

On Wed, Jun 10, 2020 at 04:58:44AM +0000, Zhang, Qiang wrote:
> cdev  object reference count and "struct printer_dev" object
> reference count(kref), This two reference counts do not conflict.  in
> file usb-skeleton.c also used a similar method， "struct usb_skel"
> contains kref members.

I do not understand what you are referring to here, sorry.

greg k-h