[3.13.y.z extended stable] Patch "KVM: s390: unintended fallthrough for external call" has been added to staging queue

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    KVM: s390: unintended fallthrough for external call

to the linux-3.13.y-queue branch of the 3.13.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.13.y-queue

This patch is scheduled to be released in version 3.13.11.10.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.13.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

------

>From 1d131bfb834107210b5b815df326a8b3ae8f9052 Mon Sep 17 00:00:00 2001
From: Christian Borntraeger <borntraeger at de.ibm.com>
Date: Wed, 3 Sep 2014 16:21:32 +0200
Subject: KVM: s390: unintended fallthrough for external call

commit f346026e55f1efd3949a67ddd1dcea7c1b9a615e upstream.

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

Signed-off-by: Christian Borntraeger <borntraeger at de.ibm.com>
Reviewed-by: Thomas Huth <thuth at linux.vnet.ibm.com>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 arch/s390/kvm/interrupt.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index 5f79d2d..f1ba119 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -71,6 +71,7 @@ static int __interrupt_is_deliverable(struct kvm_vcpu *vcpu,
 			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;
--
1.9.1