diff --git a/man2/signalfd.2 b/man2/signalfd.2
index 95c61379e..ccf81c79b 100644
--- a/man2/signalfd.2
+++ b/man2/signalfd.2
@@ -313,6 +313,13 @@ If a signal appears in the
 .I mask
 of more than one of the file descriptors, then occurrences
 of that signal can be read (once) from any one of the descriptors.
+.SH BUGS
+In kernels up to and including 2.6.25, the
+.I ssi_ptr
+and
+.I ssi_int
+fields are not filled in with the data accompanying a signal sent by
+.BR sigqueue (2).
 .SH EXAMPLE
 The program below accepts the signals
 .B SIGINT