From 749e6720d2ee10d5221d5d7b8cee8ac5d1cd690e Mon Sep 17 00:00:00 2001 From: Or Gerlitz Date: Thu, 16 Feb 2017 10:31:10 +0200 Subject: [PATCH] net/sched: cls_flower: Properly handle classifier flags dumping Dump the classifier flags only if non zero and make sure to check the return status of the handler that puts them into the netlink msg. Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller --- net/sched/cls_flower.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c index 0826c8ec3a76..850d98294bf6 100644 --- a/net/sched/cls_flower.c +++ b/net/sched/cls_flower.c @@ -1229,7 +1229,8 @@ static int fl_dump(struct net *net, struct tcf_proto *tp, unsigned long fh, if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags)) goto nla_put_failure; - nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags); + if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags)) + goto nla_put_failure; if (tcf_exts_dump(skb, &f->exts)) goto nla_put_failure; -- 2.20.1