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af_packet: tone down the Tx-ring unsupported spew.

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[ 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@codemonkey.org.uk>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dave Jones 2016-04-04 15:11:50 -04:00 committed by Greg Kroah-Hartman
parent 52b0d2ee55
commit 8cc953562e
1 changed files with 1 additions and 1 deletions
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2
net/packet/af_packet.c
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@ -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;
}