xen/events: BUG() when we can't allocate our event->irq array.
authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Thu, 29 Sep 2011 17:31:21 +0000 (13:31 -0400)
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Wed, 19 Oct 2011 21:03:25 +0000 (17:03 -0400)
In case we can't allocate we are doomed. We should BUG_ON
instead of trying to dereference it later on.

Acked-by: Ian Campbell <ian.campbell@citrix.com>
[v1: Use BUG_ON instead of BUG]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
drivers/xen/events.c

index 7523719bf8a4aab4dadfeb063151958bff9a0d45..6b002cca1f5a0a8101cfcfa0780925f2286ebcbf 100644 (file)
@@ -1670,6 +1670,7 @@ void __init xen_init_IRQ(void)
 
        evtchn_to_irq = kcalloc(NR_EVENT_CHANNELS, sizeof(*evtchn_to_irq),
                                    GFP_KERNEL);
+       BUG_ON(!evtchn_to_irq);
        for (i = 0; i < NR_EVENT_CHANNELS; i++)
                evtchn_to_irq[i] = -1;