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af_packet: tone down the Tx-ring unsupported spew.

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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 <[email protected]>
Acked-by: Daniel Borkmann <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Dave Jones 2016-04-04 15:11:50 -04:00 • committed by David S. Miller
commit 6ae81ced37
1 changed files with 1 additions and 1 deletions
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2
net/packet/af_packet.c
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@ -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 */
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;
}