From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Benjamin Marzinski <bmarzins@redhat.com>
Date: Wed, 10 Oct 2018 11:15:30 -0500
Subject: [PATCH] libmultipath: timeout on unresponsive tur thread

If the tur checker thread has been cancelled but isn't responding,
timeout instead of doing a sync check.  This will keep one bad
device from impacting all of multipathd.

Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
---
 libmultipath/checkers/tur.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/libmultipath/checkers/tur.c b/libmultipath/checkers/tur.c
index 86c0cdc..b2a2170 100644
--- a/libmultipath/checkers/tur.c
+++ b/libmultipath/checkers/tur.c
@@ -305,10 +305,10 @@ int libcheck_check(struct checker * c)
 	} else {
 		if (uatomic_read(&ct->holders) > 1) {
 			/* The thread has been cancelled but hasn't
-			 * quilt. Fail back to synchronous mode */
-			condlog(3, "%d:%d : tur checker failing back to sync",
+			 * quit. exit with timeout. */
+			condlog(3, "%d:%d : tur thread not responding",
 				major(ct->devt), minor(ct->devt));
-			return tur_check(c->fd, c->timeout, c->message);
+			return PATH_TIMEOUT;
 		}
 		/* Start new TUR checker */
 		pthread_mutex_lock(&ct->lock);
-- 
2.7.4