Re: [Xen-devel] [PATCH v2 1/2] xen/xenbus: reference count registered modules

[Jürgen Groß <jgross@xxxxxxxx>]

On 29.11.19 14:43, Paul Durrant wrote:
> To prevent a module being removed whilst attached to a frontend, 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.
>
> NOTE: This allows the ad-hoc reference counting in xen-netback to be
>        removed. This will be done in a subsequent patch.
>
> Suggested-by: Jan Beulich <jbeulich@xxxxxxxx>
> Signed-off-by: Paul Durrant <pdurrant@xxxxxxxxxx>
Reviewed-by: Juergen Gross <jgross@xxxxxxxx>


Juergen

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