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Bug#852324: Disable CONFIG_DEBUG_WX in order to avoid this issue.



On Mon, 2017-07-24 at 20:18 +0200, Helio Loureiro wrote:
> Hi,
> 
> First an errata: I don't see messages since March, not January as I stated
> wrongly before.
> 
> And I tracked similar messages on other distros and found a message from
> Linus himself about a way to avoid such error:
> 
> https://lkml.org/lkml/2015/12/14/670
> 
> Checking standard Debian kernel settings, I can see it is indeed enabled.
> 
> # grep CONFIG_DEBUG_WX /boot/config-4.9.0-3-amd64
> CONFIG_DEBUG_WX=y
> 
> So is possible to delivery a correction kernel package with such parameter
> disabled?

This check catches a real security weakness in Xen.  We won't disable
checking for it.  Note that I did downgrade the severity of the warning
when running on Xen, since we know about it and don't expect it to be
fixed soon.

Ben.

-- 
Ben Hutchings
Reality is just a crutch for people who can't handle science fiction.

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