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    SubjectBUG: warning at net/core/dev.c
    	Hi!

    After booting 2.6.18-rc3 these messages appeared in kernel log:

    Jul 31 10:57:17 fw kernel: BUG: warning at net/core/dev.c:1171/skb_checksum_help()
    Jul 31 10:57:17 fw kernel: [<c025ec4c>] skb_checksum_help+0x159/0x15b
    Jul 31 10:57:17 fw kernel: [<c02afb93>] ip_nat_fn+0x1a7/0x23e
    Jul 31 10:57:17 fw kernel: [<c02af56b>] ipt_local_hook+0xac/0x115
    Jul 31 10:57:17 fw kernel: [<c0278535>] dst_output+0x0/0xc
    Jul 31 10:57:17 fw kernel: [<c02afd9a>] ip_nat_local_fn+0x65/0xd5
    Jul 31 10:57:17 fw kernel: [<c0278535>] dst_output+0x0/0xc
    Jul 31 10:57:17 fw kernel: [<c026e8fe>] nf_iterate+0x58/0x84
    Jul 31 10:57:17 fw kernel: [<c0278535>] dst_output+0x0/0xc
    Jul 31 10:57:17 fw kernel: [<c0278535>] dst_output+0x0/0xc
    Jul 31 10:57:17 fw kernel: [<c026e995>] nf_hook_slow+0x6b/0x102
    Jul 31 10:57:17 fw kernel: [<c0278535>] dst_output+0x0/0xc
    Jul 31 10:57:17 fw kernel: [<c0279290>] ip_queue_xmit+0x408/0x4f3
    Jul 31 10:57:17 fw kernel: [<c0278535>] dst_output+0x0/0xc
    Jul 31 10:57:17 fw kernel: [<c01b781f>] as_dispatch_request+0x196/0x37d
    Jul 31 10:57:17 fw kernel: [<c01aedd2>] elv_next_request+0x10e/0x184
    Jul 31 10:57:17 fw kernel: [<c02139c3>] start_io+0x9f/0x124
    Jul 31 10:57:17 fw kernel: [<c0213cb3>] do_cciss_request+0x26b/0x2f5
    Jul 31 10:57:17 fw kernel: [<c02ac2d5>] tcp_manip_pkt+0x109/0x128
    Jul 31 10:57:17 fw kernel: [<c028a02b>] tcp_transmit_skb+0x282/0x47f
    Jul 31 10:57:17 fw kernel: [<c028af5a>] tso_fragment+0x13f/0x1f4
    Jul 31 10:57:17 fw kernel: [<c028b7dc>] tcp_write_xmit+0x1a2/0x2aa
    Jul 31 10:57:17 fw kernel: [<c028b919>] __tcp_push_pending_frames+0x35/0xa2
    Jul 31 10:57:17 fw kernel: [<c0288725>] tcp_rcv_established+0x3fc/0x73b
    Jul 31 10:57:17 fw kernel: [<c02905b3>] tcp_v4_do_rcv+0xd7/0xd9
    Jul 31 10:57:17 fw kernel: [<c0290bd6>] tcp_v4_rcv+0x621/0x77e
    Jul 31 10:57:17 fw kernel: [<c02755c5>] ip_local_deliver+0x8f/0x1da
    Jul 31 10:57:17 fw kernel: [<c0275710>] ip_local_deliver_finish+0x0/0x124
    Jul 31 10:57:18 fw kernel: [<c0275a62>] ip_rcv+0x22e/0x481
    Jul 31 10:57:18 fw kernel: [<c0275cb5>] ip_rcv_finish+0x0/0x227
    Jul 31 10:57:18 fw kernel: [<c025e8a0>] __net_timestamp+0x14/0x27
    Jul 31 10:57:18 fw kernel: [<c025f50d>] netif_receive_skb+0x1a1/0x1a9
    Jul 31 10:57:18 fw kernel: [<c021a72a>] e1000_clean_rx_irq+0x1bd/0x569
    Jul 31 10:57:18 fw kernel: [<c021a1d1>] e1000_clean+0x70/0x10a
    Jul 31 10:57:18 fw kernel: [<c025f675>] net_rx_action+0x6a/0xe0
    Jul 31 10:57:18 fw kernel: [<c011af07>] __do_softirq+0x40/0x8e
    Jul 31 10:57:18 fw kernel: [<c011af7c>] do_softirq+0x27/0x29
    Jul 31 10:57:18 fw kernel: [<c0105026>] do_IRQ+0x36/0x69
    Jul 31 10:57:18 fw kernel: [<c0103492>] common_interrupt+0x1a/0x20

    and

    Jul 31 10:57:18 fw kernel: BUG: warning at net/core/dev.c:1225/skb_gso_segment()
    Jul 31 10:57:18 fw kernel: [<c025ee15>] skb_gso_segment+0x1c7/0x1cc
    Jul 31 10:57:18 fw kernel: [<c025eea7>] dev_gso_segment+0x1a/0x41
    Jul 31 10:57:18 fw kernel: [<c025ef47>] dev_hard_start_xmit+0x79/0xf7
    Jul 31 10:57:18 fw kernel: [<c026a34c>] __qdisc_run+0x84/0x156
    Jul 31 10:57:18 fw kernel: [<c025f1b9>] dev_queue_xmit+0x1f4/0x20d
    Jul 31 10:57:18 fw kernel: [<c0278d5d>] ip_output+0x120/0x24b
    Jul 31 10:57:18 fw kernel: [<c0278a81>] ip_finish_output+0x0/0x1bc
    Jul 31 10:57:18 fw kernel: [<c02792a9>] ip_queue_xmit+0x421/0x4f3
    Jul 31 10:57:18 fw kernel: [<c0278535>] dst_output+0x0/0xc
    Jul 31 10:57:18 fw kernel: [<c01b781f>] as_dispatch_request+0x196/0x37d
    Jul 31 10:57:18 fw kernel: [<c01aedd2>] elv_next_request+0x10e/0x184
    Jul 31 10:57:18 fw kernel: [<c02139c3>] start_io+0x9f/0x124
    Jul 31 10:57:18 fw kernel: [<c0213cb3>] do_cciss_request+0x26b/0x2f5
    Jul 31 10:57:18 fw kernel: [<c02ac2d5>] tcp_manip_pkt+0x109/0x128
    Jul 31 10:57:18 fw kernel: [<c028a02b>] tcp_transmit_skb+0x282/0x47f
    Jul 31 10:57:18 fw kernel: [<c028af5a>] tso_fragment+0x13f/0x1f4
    Jul 31 10:57:18 fw kernel: [<c028b7dc>] tcp_write_xmit+0x1a2/0x2aa
    Jul 31 10:57:18 fw kernel: [<c028b919>] __tcp_push_pending_frames+0x35/0xa2
    Jul 31 10:57:18 fw kernel: [<c0288725>] tcp_rcv_established+0x3fc/0x73b
    Jul 31 10:57:18 fw kernel: [<c02905b3>] tcp_v4_do_rcv+0xd7/0xd9
    Jul 31 10:57:18 fw kernel: [<c0290bd6>] tcp_v4_rcv+0x621/0x77e
    Jul 31 10:57:18 fw kernel: [<c02755c5>] ip_local_deliver+0x8f/0x1da
    Jul 31 10:57:18 fw kernel: [<c0275710>] ip_local_deliver_finish+0x0/0x124
    Jul 31 10:57:18 fw kernel: [<c0275a62>] ip_rcv+0x22e/0x481
    Jul 31 10:57:18 fw kernel: [<c0275cb5>] ip_rcv_finish+0x0/0x227
    Jul 31 10:57:18 fw kernel: [<c025e8a0>] __net_timestamp+0x14/0x27
    Jul 31 10:57:18 fw kernel: [<c025f50d>] netif_receive_skb+0x1a1/0x1a9
    Jul 31 10:57:18 fw kernel: [<c021a72a>] e1000_clean_rx_irq+0x1bd/0x569
    Jul 31 10:57:18 fw kernel: [<c021a1d1>] e1000_clean+0x70/0x10a
    Jul 31 10:57:18 fw kernel: [<c025f675>] net_rx_action+0x6a/0xe0
    Jul 31 10:57:18 fw kernel: [<c011af07>] __do_softirq+0x40/0x8e
    Jul 31 10:57:19 fw kernel: [<c011af7c>] do_softirq+0x27/0x29
    Jul 31 10:57:19 fw kernel: [<c0105026>] do_IRQ+0x36/0x69
    Jul 31 10:57:19 fw kernel: [<c0103492>] common_interrupt+0x1a/0x20


    The machine seems to work fine, but messages are somewhat odd.
    System is HP DL380g4 with two 2port e1000 NICs and SCSI discs
    on cciss controller.

    Are these messages OK ?


    Thanks,
    Vita
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