linux-kernel - [PATCH 3.2 006/164] KVM: s390: unintended fallthrough for external call

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Date:	Fri, 12 Dec 2014 06:14:25 +0000
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org,
	"Thomas Huth" <thuth@...ux.vnet.ibm.com>,
	"Christian Borntraeger" <borntraeger@...ibm.com>
Subject: [PATCH 3.2 006/164] KVM: s390: unintended fallthrough for
 external call

3.2.65-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Christian Borntraeger <borntraeger@...ibm.com>

commit f346026e55f1efd3949a67ddd1dcea7c1b9a615e upstream.

We must not fallthrough if the conditions for external call are not met.

Signed-off-by: Christian Borntraeger <borntraeger@...ibm.com>
Reviewed-by: Thomas Huth <thuth@...ux.vnet.ibm.com>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 arch/s390/kvm/interrupt.c | 1 +
 1 file changed, 1 insertion(+)

--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -43,6 +43,7 @@ static int __interrupt_is_deliverable(st
 			return 0;
 		if (vcpu->arch.sie_block->gcr[0] & 0x2000ul)
 			return 1;
+		return 0;
 	case KVM_S390_INT_EMERGENCY:
 		if (psw_extint_disabled(vcpu))
 			return 0;

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