diff --git a/man2/ioctl_userfaultfd.2 b/man2/ioctl_userfaultfd.2
index 6edd3966a..e12b9de8d 100644
--- a/man2/ioctl_userfaultfd.2
+++ b/man2/ioctl_userfaultfd.2
@@ -481,6 +481,19 @@ was invalid.
 An invalid bit was specified in the
 .IR mode
 field.
+.TP
+.B ENOENT
+(Since Linux 4.11)
+The faulting process has changed
+its virtual memory layout simultaneously with outstanding
+.I UFFDIO_COPY
+operation.
+.TP
+.B ENOSPC
+(Since Linux 4.11)
+The faulting process has exited at the time of
+.I UFFDIO_COPY
+operation.
 .\"
 .SS UFFDIO_ZEROPAGE
 (Since Linux 4.3.)