From: Izik Eidus <[EMAIL PROTECTED]>
Fix userspace memory handling bug related to cow the previous way we called
get_user_pages, was without the force flag and therefore it didnt break COW
shared pages. This caused host memory corruption when host userspace fork()ed.
Signed-off-by: Izik Eidus <[EMAIL PROTECTED]>
Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 845beb2..a5ee518 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -470,7 +470,7 @@ static struct page *__gfn_to_page(struct kvm *kvm, gfn_t
gfn)
return bad_page;
}
- npages = get_user_pages(current, current->mm, addr, 1, 1, 0, page,
+ npages = get_user_pages(current, current->mm, addr, 1, 1, 1, page,
NULL);
if (npages != 1) {
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