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

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Message-Id: <1246291510-3676-1-git-send-email-jirislaby@gmail.com>
Date:	Mon, 29 Jun 2009 18:05:10 +0200
From:	Jiri Slaby <jirislaby@...il.com>
To:	avi@...hat.com
Cc:	kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
	Jiri Slaby <jirislaby@...il.com>
Subject: [PATCH] KVM: fix lock imbalance

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

Signed-off-by: Jiri Slaby <jirislaby@...il.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 d8b2eca..2b3307b 100644
--- a/virt/kvm/ioapic.c
+++ b/virt/kvm/ioapic.c
@@ -290,7 +290,7 @@ static void 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;
+		goto unlock;
 	}
 
 	addr &= 0xff;
@@ -311,6 +311,7 @@ static void ioapic_mmio_write(struct kvm_io_device *this, gpa_t addr, int len,
 	default:
 		break;
 	}
+unlock:
 	mutex_unlock(&ioapic->kvm->irq_lock);
 }
 
-- 
1.6.3.2

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