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Message-ID: <4394916B.6060606@tmr.com>
Date: Mon, 05 Dec 2005 14:13:47 -0500
From: Bill Davidsen <davidsen@tmr.com>
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To: Johannes Stezenbach <js@linuxtv.org>
CC: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       shemminger@osdl.org, netdev@vger.kernel.org
Subject: Re: Linux 2.6.15-rc5: sk98lin broken
References: <Pine.LNX.4.64.0512032155290.3099@g5.osdl.org> <20051204234320.GA7478@linuxtv.org>
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Johannes Stezenbach wrote:
> On Sat, Dec 03, 2005, Linus Torvalds wrote:
> 
>>shemminger@osdl.org:
>>      sk98lin: fix checksumming code
>>      sk98lin: add permanent address support
>>      sk98lin: avoid message confusion with skge
> 
> 
> I have an Asus P4P800 "Deluxe" with 3c940 LOM.
> 
> If I ping the box I get the following:
> 
> Dec  4 22:57:02 abc kernel: [<c0103c00>] dump_stack+0x17/0x19
> Dec  4 22:57:02 abc kernel: [<c03b99e9>] netdev_rx_csum_fault+0x27/0x2d
> Dec  4 22:57:02 abc kernel: [<c03b75a9>] __skb_checksum_complete+0x5a/0x60
> Dec  4 22:57:02 abc kernel: [<c0404c51>] icmp_error+0xbd/0x193
> Dec  4 22:57:02 abc kernel: [<c0402291>] ip_conntrack_in+0x67/0x279
> Dec  4 22:57:02 abc kernel: [<c03c8cbf>] nf_iterate+0x59/0x7d
> Dec  4 22:57:02 abc kernel: [<c03c8d3a>] nf_hook_slow+0x57/0x106
> Dec  4 22:57:02 abc kernel: [<c03d1074>] ip_rcv+0x1af/0x580
> Dec  4 22:57:02 abc kernel: [<c03ba1ed>] netif_receive_skb+0x15a/0x1ef
> Dec  4 22:57:02 abc kernel: [<c03ba301>] process_backlog+0x7f/0x10d
> Dec  4 22:57:02 abc kernel: [<c03ba40c>] net_rx_action+0x7d/0x110
> Dec  4 22:57:02 abc kernel: [<c01250a2>] __do_softirq+0x72/0xe1
> Dec  4 22:57:02 abc kernel: [<c0104ed7>] do_softirq+0x5d/0x61
> Dec  4 22:57:02 abc kernel: =======================
> Dec  4 22:57:02 abc kernel: [<c01251fa>] irq_exit+0x48/0x4a
> Dec  4 22:57:02 abc kernel: [<c0104d9d>] do_IRQ+0x5d/0x8f
> Dec  4 22:57:02 abc kernel: [<c010372e>] common_interrupt+0x1a/0x20
> Dec  4 22:57:02 abc kernel: [<c0100d51>] cpu_idle+0x49/0xa0
> Dec  4 22:57:02 abc kernel: [<c01002d7>] rest_init+0x37/0x39
> Dec  4 22:57:02 abc kernel: [<c057f8cf>] start_kernel+0x164/0x177
> Dec  4 22:57:02 abc kernel: [<c0100210>] 0xc0100210
> 
>   (once for each ICMP packet)
> 
> 2.6.15-rc2 works fine.

I can confirm that 2.6.15-rc3 works as well:
eth0: 3Com Gigabit LOM (3C940)
       PrefPort:A  RlmtMode:Check Link State
ip_tables: (C) 2000-2002 Netfilter core team
ip_tables: (C) 2000-2002 Netfilter core team
eth0: network connection up using port A
     speed:           100
     autonegotiation: yes
     duplex mode:     full
     flowctrl:        symmetric
     irq moderation:  disabled
     scatter-gather:  enabled

No messages from ping, although the pig is somewhat slower than I would 
expect, ~200us response time.

Looks like a regression, I can't try the latest kernel until Friday, 
it's 260 miles round trip to the machine if it doesn't boot cleanly.
> 
> 
> Johannes


-- 
    -bill davidsen (davidsen@tmr.com)
"The secret to procrastination is to put things off until the
  last possible moment - but no longer"  -me

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