[PATCH 4/9] xen/events: BUG() when we can't allocate our event->irq array.

[Konrad Rzeszutek Wilk]

In case we can't allocate we are doomed. We should BUG_ON
instead of trying to dereference it later on.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
---
 drivers/xen/events.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 7523719..5db04bf 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -1670,6 +1670,8 @@ void __init xen_init_IRQ(void)
 
 	evtchn_to_irq = kcalloc(NR_EVENT_CHANNELS, sizeof(*evtchn_to_irq),
 				    GFP_KERNEL);
+	if (!evtchn_to_irq)
+		BUG();
 	for (i = 0; i < NR_EVENT_CHANNELS; i++)
 		evtchn_to_irq[i] = -1;
 
-- 
1.7.4.1

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