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-rw-r--r--virt/kvm/kvm_main.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 74f73192094..ec2e3c6ac7e 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -947,12 +947,13 @@ static pfn_t hva_to_pfn(struct kvm *kvm, unsigned long addr)
if (unlikely(npages != 1)) {
struct vm_area_struct *vma;
+ down_read(&current->mm->mmap_sem);
if (is_hwpoison_address(addr)) {
+ up_read(&current->mm->mmap_sem);
get_page(hwpoison_page);
return page_to_pfn(hwpoison_page);
}
- down_read(&current->mm->mmap_sem);
vma = find_vma(current->mm, addr);
if (vma == NULL || addr < vma->vm_start ||