linux-kernel - Re: [PATCH v3 1/2] xen/xenbus: reference count registered modules

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Message-ID: <d6998d80-99f1-ffa4-f4cf-5c9bb938587d@suse.com>
Date:   Wed, 4 Dec 2019 11:36:29 +0100
From:   Jürgen Groß <jgross@...e.com>
To:     Paul Durrant <pdurrant@...zon.com>, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org, xen-devel@...ts.xenproject.org
Cc:     Jan Beulich <jbeulich@...e.com>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Stefano Stabellini <sstabellini@...nel.org>
Subject: Re: [PATCH v3 1/2] xen/xenbus: reference count registered modules

On 02.12.19 12:41, Paul Durrant wrote:
> To prevent a PV driver module being removed whilst attached to its other
> end, and hence xenbus calling into potentially invalid text, take a
> reference on the module before calling the probe() method (dropping it if
> unsuccessful) and drop the reference after returning from the remove()
> method.
> 
> Suggested-by: Jan Beulich <jbeulich@...e.com>
> Signed-off-by: Paul Durrant <pdurrant@...zon.com>

Pushed to xen/tip.git for-linus-5.5b


Juergen