[PATCH AUTOSEL for 4.9 28/55] grace: replace BUG_ON by WARN_ONCE in exit_net hook

[Sasha Levin]

From: Vasily Averin <vvs@xxxxxxxxxxxxx>

[ Upstream commit b872285751c1af010e12d02bce7069e2061a58ca ]

Signed-off-by: Vasily Averin <vvs@xxxxxxxxxxxxx>
Signed-off-by: J. Bruce Fields <bfields@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
---
 fs/nfs_common/grace.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/nfs_common/grace.c b/fs/nfs_common/grace.c
index fd8c9a5bcac4..e280e9c9ebf3 100644
--- 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 = {
-- 
2.11.0