Hi, Just booted -rc5 on another one of my boxes, and I get literally tons of these everytime there's some network activity: printk: 300 messages suppressed. <NULL>: hw csum failure. Call Trace: <IRQ> <ffffffff80357463>{__skb_checksum_complete+76} <ffffffff80381e89>{tcp_rcv_established+1384} <ffffffff80388ee9>{tcp_v4_d} <ffffffff8038a4ee>{tcp_v4_rcv+2285} <ffffffff8036f59f>{ip_local_deliver+} <ffffffff8036f480>{ip_rcv+1043} <ffffffff8035bc0a>{netif_receive_skb+460} <ffffffff8035bd08>{process_backlog+142} <ffffffff8035a8a5>{net_rx_action} <ffffffff8013641e>{__do_softirq+100} <ffffffff8010ef9b>{call_softirq+31} <ffffffff8011028c>{do_softirq+44} <ffffffff801102c4>{do_IRQ+52} <ffffffff8010df9a>{ret_from_intr+0} <EOI> <ffffffff8010c4a3>{default_id} <ffffffff8010c547>{cpu_idle+97} <ffffffff806327d5>{start_kernel+389} <ffffffff8063225e>{_sinittext+606} The box is using the sk98lin driver. -- Jens Axboe - : send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html