diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog
index 2764d28f59..ef497492d9 100644
--- a/gdb/gdbserver/ChangeLog
+++ b/gdb/gdbserver/ChangeLog
@@ -1,3 +1,8 @@
+2015-08-19  Gary Benson  <gbenson@redhat.com>
+
+	* hostio.c (handle_pread): Do not attempt to read more data
+	than hostio_reply_with_data can fit in a packet.
+
 2015-08-18  Joel Brobecker  <brobecker@adacore.com>
 
 	* linux-aarch32-low.c (NT_ARM_VFP): Define if not already defined.
diff --git a/gdb/gdbserver/hostio.c b/gdb/gdbserver/hostio.c
index b38a6bd056..8788f07391 100644
--- a/gdb/gdbserver/hostio.c
+++ b/gdb/gdbserver/hostio.c
@@ -344,6 +344,7 @@ handle_pread (char *own_buf, int *new_packet_len)
 {
   int fd, ret, len, offset, bytes_sent;
   char *p, *data;
+  static int max_reply_size = -1;
 
   p = own_buf + strlen ("vFile:pread:");
 
@@ -359,6 +360,17 @@ handle_pread (char *own_buf, int *new_packet_len)
       return;
     }
 
+  /* Do not attempt to read more than the maximum number of bytes
+     hostio_reply_with_data can fit in a packet.  We may still read
+     too much because of escaping, but this is handled below.  */
+  if (max_reply_size == -1)
+    {
+      sprintf (own_buf, "F%x;", PBUFSIZ);
+      max_reply_size = PBUFSIZ - strlen (own_buf);
+    }
+  if (len > max_reply_size)
+    len = max_reply_size;
+
   data = xmalloc (len);
 #ifdef HAVE_PREAD
   ret = pread (fd, data, len, offset);