diff --git a/man2/ioctl_userfaultfd.2 b/man2/ioctl_userfaultfd.2
index 60fd29b77..32f0744d1 100644
--- a/man2/ioctl_userfaultfd.2
+++ b/man2/ioctl_userfaultfd.2
@@ -196,6 +196,15 @@ with the
 flag set,
 .BR memfd_create (2),
 and so on.
+.TP
+.B UFFD_FEATURE_SIGBUS
+Since Linux 4.14, If this feature bit is set, no page-fault events
+.B (UFFD_EVENT_PAGEFAULT)
+will be delivered, instead a
+.B SIGBUS
+signal will be sent to the faulting process. Applications using this
+feature will not require the use of a userfaultfd monitor for processing
+memory accesses to the regions registered with userfaultfd.
 .IP
 The returned
 .I ioctls
diff --git a/man2/userfaultfd.2 b/man2/userfaultfd.2
index 1741ee3ad..3c5b9c0ab 100644
--- a/man2/userfaultfd.2
+++ b/man2/userfaultfd.2
@@ -171,6 +171,29 @@ or
 .B UFFDIO_ZERO
 .BR ioctl (2)
 operations to resolve the page fault.
+.PP
+Starting from Linux 4.14, if application sets
+.B UFFD_FEATURE_SIGBUS
+feature bit using
+.B UFFDIO_API
+.BR ioctl (2),
+no page fault notification will be forwarded to
+the user-space, instead a
+.B SIGBUS
+signal is delivered to the faulting process. With this feature,
+userfaultfd can be used for robustness purpose to simply catch
+any access to areas within the registered address range that do not
+have pages allocated, without having to listen to userfaultfd events.
+No userfaultfd monitor will be required for dealing with such memory
+accesses. For example, this feature can be useful for applications that
+want to prevent the kernel from automatically allocating pages and filling
+holes in sparse files when the hole is accessed thru mapped address.
+.PP
+The
+.B UFFD_FEATURE_SIGBUS
+feature is implicitly inherited through fork() if used in combination with
+.BR UFFD_FEATURE_FORK .
+
 .PP
 Details of the various
 .BR ioctl (2)