svm_create_vcpu() does not free the pages allocated during the creation
when it fails to complete the allocations. This patch fixes it.
Signed-off-by: Takuya Yoshikawa
---
arch/x86/kvm/svm.c | 25 +++--
1 files changed, 15 insertions(+), 10 deletions(-)
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index def4877..3a2f2b9 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -836,29 +836,28 @@ static struct kvm_vcpu *svm_create_vcpu(struct kvm *kvm,
unsigned int id)
if (err)
goto free_svm;
+ err = -ENOMEM;
page = alloc_page(GFP_KERNEL);
- if (!page) {
- err = -ENOMEM;
+ if (!page)
goto uninit;
- }
- err = -ENOMEM;
msrpm_pages = alloc_pages(GFP_KERNEL, MSRPM_ALLOC_ORDER);
if (!msrpm_pages)
- goto uninit;
+ goto free_page1;
nested_msrpm_pages = alloc_pages(GFP_KERNEL, MSRPM_ALLOC_ORDER);
if (!nested_msrpm_pages)
- goto uninit;
-
- svm->msrpm = page_address(msrpm_pages);
- svm_vcpu_init_msrpm(svm->msrpm);
+ goto free_page2;
hsave_page = alloc_page(GFP_KERNEL);
if (!hsave_page)
- goto uninit;
+ goto free_page3;
+
svm->nested.hsave = page_address(hsave_page);
+ svm->msrpm = page_address(msrpm_pages);
+ svm_vcpu_init_msrpm(svm->msrpm);
+
svm->nested.msrpm = page_address(nested_msrpm_pages);
svm_vcpu_init_msrpm(svm->nested.msrpm);
@@ -875,6 +874,12 @@ static struct kvm_vcpu *svm_create_vcpu(struct kvm *kvm,
unsigned int id)
return &svm->vcpu;
+free_page3:
+ __free_pages(nested_msrpm_pages, MSRPM_ALLOC_ORDER);
+free_page2:
+ __free_pages(msrpm_pages, MSRPM_ALLOC_ORDER);
+free_page1:
+ __free_page(page);
uninit:
kvm_vcpu_uninit(&svm->vcpu);
free_svm:
--
1.6.3.3
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