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Commit 6ae81ced authored by Dave Jones's avatar Dave Jones Committed by David S. Miller
Browse files

af_packet: tone down the Tx-ring unsupported spew. 



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: default avatarDave Jones <davej@codemonkey.org.uk>
Acked-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 18fcf49f

net/packet/af_packet.c

+1 −1
Original line number Original line Diff line number Diff line
@@ -4151,7 +4151,7 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u, 




	/* Opening a Tx-ring is NOT supported in TPACKET_V3 */

	/* Opening a Tx-ring is NOT supported in TPACKET_V3 */

	if (!closing && tx_ring && (po->tp_version > TPACKET_V2)) {

	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;

		goto out;

	}

	}