linux-kernel - Re: [PATCH v4] driver core: Fix use-after-free and double free on glue directory

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Message-ID: <20190524190443.GB29565@kroah.com>
Date:   Fri, 24 May 2019 21:04:43 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Muchun Song <smuchun@...il.com>
Cc:     rafael@...nel.org, benh@...nel.crashing.org, prsood@...eaurora.org,
        mojha@...eaurora.org, gkohli@...eaurora.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        zhaowuyun@...gtech.com
Subject: Re: [PATCH v4] driver core: Fix use-after-free and double free on
 glue directory

On Thu, May 16, 2019 at 10:23:42PM +0800, Muchun Song wrote:
> There is a race condition between removing glue directory and adding a new
> device under the glue directory. It can be reproduced in following test:

<snip>

Is this related to:
	Subject: [PATCH v3] drivers: core: Remove glue dirs early only when refcount is 1

?

If so, why is the solution so different?

thanks,

greg k-h