linux-kernel - [PATCH 47/47] KVM: fix lock imbalance

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Message-Id: <1250686963-8357-48-git-send-email-avi@redhat.com>
Date:	Wed, 19 Aug 2009 16:02:43 +0300
From:	Avi Kivity <avi@...hat.com>
To:	kvm@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH 47/47] KVM: fix lock imbalance

From: Jiri Slaby <jirislaby@...il.com>

There is a missing unlock on one fail path in ioapic_mmio_write,
fix that.

Signed-off-by: Jiri Slaby <jirislaby@...il.com>
Signed-off-by: Avi Kivity <avi@...hat.com>
---
 virt/kvm/ioapic.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c
index ddf6aa9..8a9c6cc 100644
--- a/virt/kvm/ioapic.c
+++ b/virt/kvm/ioapic.c
@@ -292,7 +292,7 @@ static int ioapic_mmio_write(struct kvm_io_device *this, gpa_t addr, int len,
 		data = *(u32 *) val;
 	else {
 		printk(KERN_WARNING "ioapic: Unsupported size %d\n", len);
-		return 0;
+		goto unlock;
 	}
 
 	addr &= 0xff;
@@ -313,6 +313,7 @@ static int ioapic_mmio_write(struct kvm_io_device *this, gpa_t addr, int len,
 	default:
 		break;
 	}
+unlock:
 	mutex_unlock(&ioapic->kvm->irq_lock);
 	return 0;
 }
-- 
1.6.3.3

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