[PATCH] KVM: check injected pic irq

[Ben-Ami Yassour]

check that an injected pic irq is between 0 and 15.

Signed-off-by: Ben-Ami Yassour <[EMAIL PROTECTED]>
---
 arch/x86/kvm/i8259.c |    6 ++++--
 arch/x86/kvm/irq.h   |    2 ++
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c
index 3ba5e5c..c2c4884 100644
--- a/arch/x86/kvm/i8259.c
+++ b/arch/x86/kvm/i8259.c
@@ -130,8 +130,10 @@ void kvm_pic_set_irq(void *opaque, int irq, int level)
 {
        struct kvm_pic *s = opaque;
 
-       pic_set_irq1(&s->pics[irq >> 3], irq & 7, level);
-       pic_update_irq(s);
+       if (irq >= 0 && irq < PIC_NUM_PINS) {
+               pic_set_irq1(&s->pics[irq >> 3], irq & 7, level);
+               pic_update_irq(s);
+       }
 }
 
 /*
diff --git a/arch/x86/kvm/irq.h b/arch/x86/kvm/irq.h
index bef9127..ac71a04 100644
--- a/arch/x86/kvm/irq.h
+++ b/arch/x86/kvm/irq.h
@@ -30,6 +30,8 @@
 #include "ioapic.h"
 #include "lapic.h"
 
+#define PIC_NUM_PINS 16
+
 struct kvm;
 struct kvm_vcpu;
 
-- 
1.5.5.1

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