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-rw-r--r--net/sched/cls_flower.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c
index 70b357f23391..25a4d64b82db 100644
--- a/net/sched/cls_flower.c
+++ b/net/sched/cls_flower.c
@@ -1500,6 +1500,14 @@ static int fl_change(struct net *net, struct sk_buff *in_skb,
if (!tc_in_hw(fnew->flags))
fnew->flags |= TCA_CLS_FLAGS_NOT_IN_HW;
+ /* tp was deleted concurrently. -EAGAIN will cause caller to lookup
+ * proto again or create new one, if necessary.
+ */
+ if (tp->deleting) {
+ err = -EAGAIN;
+ goto errout_hw;
+ }
+
refcount_inc(&fnew->refcnt);
if (fold) {
/* Fold filter was deleted concurrently. Retry lookup. */