From 866fa681855e27197034b26c62f07cfe5e4767cf Mon Sep 17 00:00:00 2001
From: Michael Kerrisk <mtk.manpages@gmail.com>
Date: Wed, 4 Feb 2015 10:16:43 +0100
Subject: [PATCH] random.4: Since Linux 3.16, reads from /dev/urandom return at
 most 32 MB

See https://bugs.debian.org/775328 and
https://bugzilla.kernel.org/show_bug.cgi?id=80981#c9

Reported-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
---
 man4/random.4 | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/man4/random.4 b/man4/random.4
index 352f1a845..f98fef0f0 100644
--- a/man4/random.4
+++ b/man4/random.4
@@ -81,7 +81,15 @@ for the device
 .IR /dev/urandom ,
 signals will not be handled until after the requested random bytes
 have been generated.
-.LP
+
+Since Linux 3.16,
+.\" commit 79a8468747c5f95ed3d5ce8376a3e82e0c5857fc
+a
+.BR read (2)
+from
+.IR /dev/urandom
+will return at most 32 MB.
+
 Writing to \fI/dev/random\fP or \fI/dev/urandom\fP will update the
 entropy pool with the data written, but this will not result in a
 higher entropy count.