diff -drupN a/mm/mprotect.c b/mm/mprotect.c
--- a/mm/mprotect.c	2018-08-06 17:23:04.000000000 +0300
+++ b/mm/mprotect.c	2022-06-12 05:28:14.000000000 +0300
@@ -303,7 +303,7 @@ mprotect_fixup(struct vm_area_struct *vm
 	pgoff = vma->vm_pgoff + ((start - vma->vm_start) >> PAGE_SHIFT);
 	*pprev = vma_merge(mm, *pprev, start, end, newflags,
 			   vma->anon_vma, vma->vm_file, pgoff, vma_policy(vma),
-			   vma->vm_userfaultfd_ctx);
+			   vma->vm_userfaultfd_ctx, vma_get_anon_name(vma));
 	if (*pprev) {
 		vma = *pprev;
 		VM_WARN_ON((vma->vm_flags ^ newflags) & ~VM_SOFTDIRTY);