From 551f85464bbd6275a1d645a06089f4c7db55b866 Mon Sep 17 00:00:00 2001
From: Volker Lendecke <vl@samba.org>
Date: Thu, 13 Sep 2018 18:56:54 +0200
Subject: [PATCH] smbd: Add a paranoia check for leases

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
---
 source3/smbd/oplock.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/source3/smbd/oplock.c b/source3/smbd/oplock.c
index 2faad788d46..827dbeb4ef2 100644
--- a/source3/smbd/oplock.c
+++ b/source3/smbd/oplock.c
@@ -347,6 +347,12 @@ static void lease_timeout_handler(struct tevent_context *ctx,
 		return;
 	}
 
+	/*
+	 * Paranoia check: There can only be one fsp_lease per lease
+	 * key
+	 */
+	SMB_ASSERT(fsp->lease == lease);
+
 	lck = get_existing_share_mode_lock(
 			talloc_tos(), fsp->file_id);
 	if (lck == NULL) {