linux-kernel - Re: [PATCH v3] drivers: core: Remove glue dirs early only when refcount is 1

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Message-ID: <20190524190409.GA29565@kroah.com>
Date:   Fri, 24 May 2019 21:04:09 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Prateek Sood <prsood@...eaurora.org>
Cc:     rafael@...nel.org, sramana@...eaurora.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] drivers: core: Remove glue dirs early only when
 refcount is 1

On Wed, May 01, 2019 at 05:29:59PM +0530, Prateek Sood wrote:
> While loading firmware blobs parallely in different threads, it is possible
> to free sysfs node of glue_dirs in device_del() from a thread while another
> thread is trying to add subdir from device_add() in glue_dirs sysfs node.

<snip>

Is this the same fix that:
	Subject: [PATCH v4] driver core: Fix use-after-free and double free on glue directory
is also trying to fix?

Why is it doing so in such a different way?

thanks,

greg k-h