From ca215e985fadd8de53605ece5d31f924e0f8fde0 Mon Sep 17 00:00:00 2001
From: Jan Kara <jack@suse.cz>
Date: Thu, 5 May 2016 17:17:09 +0200
Subject: [PATCH] Zero sectors are strange

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>
---
 iowatcher/blkparse.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/iowatcher/blkparse.c b/iowatcher/blkparse.c
index 78a16e5..c7d1d65 100644
--- a/iowatcher/blkparse.c
+++ b/iowatcher/blkparse.c
@@ -1097,6 +1097,8 @@ void add_pending_io(struct trace *trace, struct graph_line_data *gld)
 		return;
 
 	if (action == __BLK_TA_QUEUE) {
+		if (io->sector == 0)
+			return;
 		if (trace->found_issue || trace->found_completion) {
 			pio = hash_queued_io(trace->io);
 			/*
-- 
2.25.1