linux-kernel - [184/200] KVM: s390: Fix possible memory leak of in kvm_arch_vcpu

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Message-Id: <20100701174302.073506620@clark.site>
Date:	Thu, 01 Jul 2010 10:44:34 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Wei Yongjun <yjwei@...fujitsu.com>,
	Carsten Otte <cotte@...ibm.com>, Avi Kivity <avi@...hat.com>
Subject: [184/200] KVM: s390: Fix possible memory leak of in kvm_arch_vcpu_create()

2.6.34-stable review patch.  If anyone has any objections, please let me know.

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

From: Wei Yongjun <yjwei@...fujitsu.com>

This patch fixed possible memory leak in kvm_arch_vcpu_create()
under s390, which would happen when kvm_arch_vcpu_create() fails.

Signed-off-by: Wei Yongjun <yjwei@...fujitsu.com>
Acked-by: Carsten Otte <cotte@...ibm.com>
Cc: stable@...nel.org
Signed-off-by: Avi Kivity <avi@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

(Cherry-picked from commit 7b06bf2ffa15e119c7439ed0b024d44f66d7b605)
---
 arch/s390/kvm/kvm-s390.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -341,11 +341,13 @@ struct kvm_vcpu *kvm_arch_vcpu_create(st
 
 	rc = kvm_vcpu_init(vcpu, kvm, id);
 	if (rc)
-		goto out_free_cpu;
+		goto out_free_sie_block;
 	VM_EVENT(kvm, 3, "create cpu %d at %p, sie block at %p", id, vcpu,
 		 vcpu->arch.sie_block);
 
 	return vcpu;
+out_free_sie_block:
+	free_page((unsigned long)(vcpu->arch.sie_block));
 out_free_cpu:
 	kfree(vcpu);
 out_nomem:


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