4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Vasily Averin <v...@virtuozzo.com>


[ Upstream commit b872285751c1af010e12d02bce7069e2061a58ca ]

Signed-off-by: Vasily Averin <v...@virtuozzo.com>
Signed-off-by: J. Bruce Fields <bfie...@redhat.com>
Signed-off-by: Sasha Levin <alexander.le...@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 fs/nfs_common/grace.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/fs/nfs_common/grace.c
+++ b/fs/nfs_common/grace.c
@@ -104,7 +104,9 @@ grace_exit_net(struct net *net)
 {
        struct list_head *grace_list = net_generic(net, grace_net_id);
 
-       BUG_ON(!list_empty(grace_list));
+       WARN_ONCE(!list_empty(grace_list),
+                 "net %x %s: grace_list is not empty\n",
+                 net->ns.inum, __func__);
 }
 
 static struct pernet_operations grace_net_ops = {


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