Messages in this thread | | | Date | Wed, 10 Dec 2008 14:28:12 -0800 | From | Greg KH <> | Subject | Re: [PATCH] ibmphp: Fix module ref count underflow |
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On Wed, Dec 10, 2008 at 02:43:34PM -0500, Neil Horman wrote: > Hey- > I happened to notice that the ibmphp hotplug driver does something > rather silly in its init routine. It purposely calls module_put so as to > underflow its module ref count to avoid being removed from the kernel. This is > bad practice, and wrong, since it provides a window for subsequent module_gets > to reset the refcount to zero, allowing an unload to race in and cause all sorts > of mysterious panics. If the module is unsafe to load, it should inform the > kernel as such with a call to __unsafe. The patch below does that. > > Regards > Neil > > Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Jesse is the PCI maintainer now, you should send this to him to verify that it goes in.
Feel free to add my: Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
to this, nice job.
thanks,
greg k-h
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