[PATCH 4.4 8/9] af_packet: tone down the Tx-ring unsupported spew.

[Greg Kroah-Hartman]

[ Upstream commit 6ae81ced378820c4c6434b1dedba14a7122df310 ]

Trinity and other fuzzers can hit this WARN on far too easily,
resulting in a tainted kernel that hinders automated fuzzing.

Replace it with a rate-limited printk.

Signed-off-by: Dave Jones <davej@xxxxxxxxxxxxxxxxx>
Acked-by: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 net/packet/af_packet.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 5d8988185c591..0dd9fc3f57e87 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -4176,7 +4176,7 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u,
 
 	/* Opening a Tx-ring is NOT supported in TPACKET_V3 */
 	if (!closing && tx_ring && (po->tp_version > TPACKET_V2)) {
-		WARN(1, "Tx-ring is not supported.\n");
+		net_warn_ratelimited("Tx-ring is not supported.\n");
 		goto out;
 	}
 
-- 
2.20.1