From: David Hildenbrand <dahi@linux.vnet.ibm.com>
Date: Thu, 15 Jan 2015 16:56:18 +0000 (+0100)
Subject: KVM: s390: floating irqs: fix user triggerable endless loop
X-Git-Tag: fixes-v4.0-rc1~113^2~3^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8e2207cdd087ebb031e9118d1fd0902c6533a5e5;p=pandora-kernel.git

KVM: s390: floating irqs: fix user triggerable endless loop

If a vm with no VCPUs is created, the injection of a floating irq
leads to an endless loop in the kernel.

Let's skip the search for a destination VCPU for a floating irq if no
VCPUs were created.

Reviewed-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Cc: stable@vger.kernel.org # v3.15+
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
---

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