From a1c8f58bb2a7793749446588918a044b32bd10ee Mon Sep 17 00:00:00 2001
From: Fabian Keil <fk@fabiankeil.de>
Date: Sat, 14 May 2016 22:05:48 +0200
Subject: [PATCH 198/257] disklatency: Skip invalid io::done probes

.. until the cause has been analyzed and fixed

Obtained from: ElectroBSD
---
 share/dtrace/disklatency | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/share/dtrace/disklatency b/share/dtrace/disklatency
index 97ef87a07980..21ff6f719053 100755
--- a/share/dtrace/disklatency
+++ b/share/dtrace/disklatency
@@ -42,7 +42,7 @@ io:::start
 }
 
 io:::done
-/this->start = start_time[arg0]/
+/(this->start = start_time[arg0]) && (args[1]->unit_number != -1)/
 {
 	this->delta = (timestamp - this->start) / 1000;
 	@q[args[1]->device_name, args[1]->unit_number] =
-- 
2.11.0