From: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Date: Mon, 28 Nov 2011 16:49:09 +0000 (-0500)
Subject: xen/events: prevent calling evtchn_get on invalid channels
X-Git-Tag: v3.3-rc1~129^2~22
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c3b3f16d1bceb5ac5f21528f889810b4ac5a3596;p=pandora-kernel.git

xen/events: prevent calling evtchn_get on invalid channels

The event channel number provided to evtchn_get can be provided by
userspace, so needs to be checked against the maximum number of event
channels prior to using it to index into evtchn_to_irq.

Signed-off-by: Daniel De Graaf <dgdegra@tycho.nsa.gov>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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