From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andre Tomt <andre@tomt.net>
Subject: Re: Fw: [Bug 201423] New: eth0: hw csum failure
Date: Fri, 26 Oct 2018 14:38:17 +0200
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Cc: Stephen Hemminger <stephen@networkplumber.org>,
        netdev <netdev@vger.kernel.org>, rossi.f@inwind.it,
        Dimitris Michailidis <dmichail@google.com>
To: Eric Dumazet <eric.dumazet@gmail.com>,
        Eric Dumazet <edumazet@google.com>
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On 26.10.2018 13:45, Andre Tomt wrote:
> On 25.10.2018 19:38, Eric Dumazet wrote:
>>
>>
>> On 10/24/2018 12:41 PM, Andre Tomt wrote:
>>>
>>> It eventually showed up again with mlx4, on 4.18.16 + fix and also on 
>>> 4.19. I still do not have a useful packet capture.
>>>
>>> It is running a torrent client serving up various linux distributions.
>>>
>>
>> Have you also applied this fix ?
>>
>> https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=db4f1be3ca9b0ef7330763d07bf4ace83ad6f913 
>>
>>
> 
> No. I've applied it now to 4.19 and will report back if anything shows up.

And it tripped again with that commit; however on another box with a 
much more complicated setup (VRFs, sch_cake, ifb, conntrack/nat, 6in4 
tunnel, VF device on mlx4)

> [ 8197.348260] wanib: hw csum failure
> [ 8197.348288] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 4.19.0-1 #1
> [ 8197.348289] Hardware name: Supermicro SYS-5018D-FN8T/X10SDV-TP8F, BIOS 1.3 03/19/2018
> [ 8197.348290] Call Trace:
> [ 8197.348296]  <IRQ>
> [ 8197.348304]  dump_stack+0x5c/0x80
> [ 8197.348308]  __skb_checksum_complete+0xac/0xc0
> [ 8197.348318]  icmp_error+0x1c8/0x1f0 [nf_conntrack]
> [ 8197.348325]  ? ip_output+0x61/0xc0
> [ 8197.348328]  ? skb_copy_bits+0x13d/0x220
> [ 8197.348334]  nf_conntrack_in+0xd8/0x390 [nf_conntrack]
> [ 8197.348339]  ? ___pskb_trim+0x192/0x330
> [ 8197.348343]  nf_hook_slow+0x43/0xc0
> [ 8197.348346]  ip_rcv+0x90/0xb0
> [ 8197.348349]  ? ip_rcv_finish_core.isra.0+0x310/0x310
> [ 8197.348354]  __netif_receive_skb_one_core+0x42/0x50
> [ 8197.348357]  netif_receive_skb_internal+0x24/0xb0
> [ 8197.348361]  ifb_ri_tasklet+0x167/0x260 [ifb]
> [ 8197.348365]  tasklet_action_common.isra.3+0x49/0xb0
> [ 8197.348369]  __do_softirq+0xe7/0x2d3
> [ 8197.348372]  irq_exit+0x96/0xd0
> [ 8197.348375]  do_IRQ+0x85/0xd0
> [ 8197.348378]  common_interrupt+0xf/0xf
> [ 8197.348379]  </IRQ>
> [ 8197.348382] RIP: 0010:cpuidle_enter_state+0xb9/0x320
> [ 8197.348384] Code: e8 1c 16 bc ff 80 7c 24 0b 00 74 17 9c 58 0f 1f 44 00 00 f6 c4 02 0f 85 3b 02 00 00 31 ff e8 3e fb c0 ff fb 66 0f 1f 44 00 00 <48> b8 ff ff ff ff f3 01 00 00 48 2b 1c 24 ba ff ff ff 7f 48 39 c3
> [ 8197.348386] RSP: 0018:ffff9f0441953ea8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffd5
> [ 8197.348388] RAX: ffff9759efae0fc0 RBX: 000007749807d911 RCX: 000000000000001f
> [ 8197.348390] RDX: 000007749807d911 RSI: 000000003a2e8670 RDI: 0000000000000000
> [ 8197.348393] RBP: ffff9759efae98a8 R08: 0000000000000002 R09: 0000000000020840
> [ 8197.348396] R10: 00626b4810384abc R11: ffff9759efae01e8 R12: 0000000000000001
> [ 8197.348398] R13: ffffffff8d0ac638 R14: 0000000000000001 R15: 0000000000000000
> [ 8197.348402]  ? cpuidle_enter_state+0x94/0x320
> [ 8197.348407]  do_idle+0x1e4/0x220
> [ 8197.348411]  cpu_startup_entry+0x5f/0x70
> [ 8197.348415]  start_secondary+0x185/0x1a0
> [ 8197.348417]  secondary_startup_64+0xa4/0xb0