diff options
Diffstat (limited to 'virt')
| -rw-r--r-- | virt/kvm/guest_memfd.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/virt/kvm/guest_memfd.c b/virt/kvm/guest_memfd.c index 191fd42067c0..319ec491ca47 100644 --- a/virt/kvm/guest_memfd.c +++ b/virt/kvm/guest_memfd.c @@ -653,6 +653,13 @@ long kvm_gmem_populate(struct kvm *kvm, gfn_t start_gfn, void __user *src, long break; } + if (folio_test_uptodate(folio)) { + folio_unlock(folio); + folio_put(folio); + ret = -EEXIST; + break; + } + folio_unlock(folio); if (!IS_ALIGNED(gfn, (1 << max_order)) || (npages - i) < (1 << max_order)) |