* 2.6.28-03117: WARNING: at net/ipv4/tcp_input.c:2504 tcp_mark_head_lost()
@ 2009-01-01 12:41 Alexander Beregalov
2009-01-01 14:28 ` Ilpo Järvinen
0 siblings, 1 reply; 4+ messages in thread
From: Alexander Beregalov @ 2009-01-01 12:41 UTC (permalink / raw)
To: netdev
WARNING: at net/ipv4/tcp_input.c:2504 tcp_mark_head_lost+0x1df/0x200()
Modules linked in: w83627hf hwmon_vid i2c_nforce2
Pid: 0, comm: swapper Not tainted 2.6.28-03117-g6a94cb7 #1
Call Trace:
[<c040f321>] ? printk+0x18/0x1f
[<c0128354>] warn_on_slowpath+0x54/0x80
[<c014bd25>] ? __lock_acquire+0x2c5/0x1000
[<c014b74c>] ? trace_hardirqs_on_caller+0x7c/0x160
[<c0399041>] ? dev_queue_xmit+0xe1/0x5d0
[<c014bd25>] ? __lock_acquire+0x2c5/0x1000
[<c014862b>] ? trace_hardirqs_off+0xb/0x10
[<c03bfaff>] tcp_mark_head_lost+0x1df/0x200
[<c03c561d>] tcp_ack+0x18dd/0x1ef0
[<c03c5ec9>] tcp_rcv_established+0x299/0x5b0
[<c03cc840>] tcp_v4_do_rcv+0x90/0x1b0
[<c0411b5c>] ? _spin_lock_nested+0x6c/0x80
[<c03cdd27>] ? tcp_v4_rcv+0x467/0x5f0
[<c03cddf2>] tcp_v4_rcv+0x532/0x5f0
[<c03b149c>] ip_local_deliver+0x6c/0xe0
[<c03b12b5>] ip_rcv+0x2b5/0x430
[<c0396b60>] netif_receive_skb+0x240/0x310
[<c03484d8>] nv_napi_poll+0x298/0x670
[<c014b83b>] ? trace_hardirqs_on+0xb/0x10
[<c039a636>] net_rx_action+0x106/0x1b0
[<c012cf0f>] __do_softirq+0x7f/0x120
[<c012d015>] do_softirq+0x65/0x70
[<c012d0ad>] irq_exit+0x8d/0xa0
[<c0105525>] do_IRQ+0x95/0xc0
[<c014b7de>] ? trace_hardirqs_on_caller+0x10e/0x160
[<c0103a2c>] common_interrupt+0x2c/0x34
[<c0109fbf>] ? default_idle+0x4f/0x60
[<c0101ba5>] cpu_idle+0x55/0xb0
[<c0405781>] rest_init+0x61/0x70
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: 2.6.28-03117: WARNING: at net/ipv4/tcp_input.c:2504 tcp_mark_head_lost()
2009-01-01 12:41 2.6.28-03117: WARNING: at net/ipv4/tcp_input.c:2504 tcp_mark_head_lost() Alexander Beregalov
@ 2009-01-01 14:28 ` Ilpo Järvinen
2009-01-01 14:50 ` Alexander Beregalov
0 siblings, 1 reply; 4+ messages in thread
From: Ilpo Järvinen @ 2009-01-01 14:28 UTC (permalink / raw)
To: Alexander Beregalov; +Cc: netdev
On Thu, 1 Jan 2009, Alexander Beregalov wrote:
> WARNING: at net/ipv4/tcp_input.c:2504 tcp_mark_head_lost+0x1df/0x200()
> Modules linked in: w83627hf hwmon_vid i2c_nforce2
> Pid: 0, comm: swapper Not tainted 2.6.28-03117-g6a94cb7 #1
> Call Trace:
> [<c040f321>] ? printk+0x18/0x1f
> [<c0128354>] warn_on_slowpath+0x54/0x80
> [<c014bd25>] ? __lock_acquire+0x2c5/0x1000
> [<c014b74c>] ? trace_hardirqs_on_caller+0x7c/0x160
> [<c0399041>] ? dev_queue_xmit+0xe1/0x5d0
> [<c014bd25>] ? __lock_acquire+0x2c5/0x1000
> [<c014862b>] ? trace_hardirqs_off+0xb/0x10
> [<c03bfaff>] tcp_mark_head_lost+0x1df/0x200
> [<c03c561d>] tcp_ack+0x18dd/0x1ef0
> [<c03c5ec9>] tcp_rcv_established+0x299/0x5b0
> [<c03cc840>] tcp_v4_do_rcv+0x90/0x1b0
...snip...
Can you reproduce it?
--
i.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: 2.6.28-03117: WARNING: at net/ipv4/tcp_input.c:2504 tcp_mark_head_lost()
2009-01-01 14:28 ` Ilpo Järvinen
@ 2009-01-01 14:50 ` Alexander Beregalov
2009-01-01 19:30 ` Ilpo Järvinen
0 siblings, 1 reply; 4+ messages in thread
From: Alexander Beregalov @ 2009-01-01 14:50 UTC (permalink / raw)
To: Ilpo Järvinen; +Cc: netdev
2009/1/1 Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>:
> On Thu, 1 Jan 2009, Alexander Beregalov wrote:
>
>> WARNING: at net/ipv4/tcp_input.c:2504 tcp_mark_head_lost+0x1df/0x200()
>> Modules linked in: w83627hf hwmon_vid i2c_nforce2
>> Pid: 0, comm: swapper Not tainted 2.6.28-03117-g6a94cb7 #1
>> Call Trace:
>> [<c040f321>] ? printk+0x18/0x1f
>> [<c0128354>] warn_on_slowpath+0x54/0x80
>> [<c014bd25>] ? __lock_acquire+0x2c5/0x1000
>> [<c014b74c>] ? trace_hardirqs_on_caller+0x7c/0x160
>> [<c0399041>] ? dev_queue_xmit+0xe1/0x5d0
>> [<c014bd25>] ? __lock_acquire+0x2c5/0x1000
>> [<c014862b>] ? trace_hardirqs_off+0xb/0x10
>> [<c03bfaff>] tcp_mark_head_lost+0x1df/0x200
>> [<c03c561d>] tcp_ack+0x18dd/0x1ef0
>> [<c03c5ec9>] tcp_rcv_established+0x299/0x5b0
>> [<c03cc840>] tcp_v4_do_rcv+0x90/0x1b0
>
> ...snip...
>
> Can you reproduce it?
No, I do not know how to reproduce it.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: 2.6.28-03117: WARNING: at net/ipv4/tcp_input.c:2504 tcp_mark_head_lost()
2009-01-01 14:50 ` Alexander Beregalov
@ 2009-01-01 19:30 ` Ilpo Järvinen
0 siblings, 0 replies; 4+ messages in thread
From: Ilpo Järvinen @ 2009-01-01 19:30 UTC (permalink / raw)
To: Alexander Beregalov; +Cc: Netdev
[-- Attachment #1: Type: TEXT/PLAIN, Size: 938 bytes --]
On Thu, 1 Jan 2009, Alexander Beregalov wrote:
> 2009/1/1 Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>:
>> On Thu, 1 Jan 2009, Alexander Beregalov wrote:
>>
>>> WARNING: at net/ipv4/tcp_input.c:2504 tcp_mark_head_lost+0x1df/0x200()
>>
>> ...snip...
>>
>> Can you reproduce it?
>
> No, I do not know how to reproduce it.
Yeah, it's probably the same old miscount I've not yet been able to track
down... I have some plans though by using kerneloops.org to collect the
necessary counters & state since nobody seems to be able to hit it except
once in a life time. Quite likely it has been there nearly forever but I
only started tracking them around 2.6.21-25 timeframe (I don't remember
the exact version anymore). Anyway, it's just a miscount that mostly
affects TCP packet timing so that there might be more delays and
burstiness (during that rare event, however, the timescale is likely so
short that no human can notice).
--
i.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2009-01-01 19:30 UTC | newest]
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2009-01-01 12:41 2.6.28-03117: WARNING: at net/ipv4/tcp_input.c:2504 tcp_mark_head_lost() Alexander Beregalov
2009-01-01 14:28 ` Ilpo Järvinen
2009-01-01 14:50 ` Alexander Beregalov
2009-01-01 19:30 ` Ilpo Järvinen
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