netdev - Re: Fw: [Bug 14953] New: WARNING: at /build/buildd/linux-2.6.31/net/ipv4/tcp

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Date:	Wed, 30 Dec 2009 12:09:56 +0200 (EET)
From:	"Ilpo Järvinen" <ilpo.jarvinen@...sinki.fi>
To:	Stephen Hemminger <shemminger@...tta.com>
cc:	Netdev <netdev@...r.kernel.org>, pl4nkton@...glemail.com
Subject: Re: Fw: [Bug 14953] New: WARNING: at
 /build/buildd/linux-2.6.31/net/ipv4/tcp_input.c:2920

On Tue, 29 Dec 2009, Stephen Hemminger wrote:

> 
> 
> Begin forwarded message:
> 
> Date: Tue, 29 Dec 2009 16:55:10 GMT
> From: bugzilla-daemon@...zilla.kernel.org
> To: shemminger@...ux-foundation.org
> Subject: [Bug 14953] New: WARNING: at /build/buildd/linux-2.6.31/net/ipv4/tcp_input.c:2920
> 
> 
> http://bugzilla.kernel.org/show_bug.cgi?id=14953
> 
>            Summary: WARNING: at
>                     /build/buildd/linux-2.6.31/net/ipv4/tcp_input.c:2920
>            Product: Networking
>            Version: 2.5
>     Kernel Version: 2.6.31.x
>           Platform: All
>         OS/Version: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: normal
>           Priority: P1
>          Component: IPV4
>         AssignedTo: shemminger@...ux-foundation.org
>         ReportedBy: pl4nkton@...glemail.com
>         Regression: No
> 
> 
> [77796.067111] WARNING: at /build/buildd/linux-2.6.31/net/ipv4/tcp_input.c:2920
> tcp_fastretrans_alert+0x461/0xc20()
> [77796.067119] Hardware name: System Product Name
> [77796.067123] Modules linked in: bridge 8021q garp stp snd_hda_codec_atihdmi
> snd_hda_codec_realtek snd_hda_intel snd_hda_codec radeon ttm snd_hwdep drm
> snd_pcm snd_timer i2c_algo_bit ixgbe snd shpchp soundcore iptable_filter
> psmouse dca i2c_piix4 snd_page_alloc ip_tables amd64_edac_mod serio_raw
> edac_core x_tables mdio asus_atk0110 usbhid sky2 3w_9xxx
> [77796.067183] Pid: 7217, comm: proftpd Not tainted 2.6.31-16-server #53-Ubuntu
> [77796.067188] Call Trace:
> [77796.067193]  <IRQ>  [<ffffffff8105e618>] warn_slowpath_common+0x78/0xb0
> [77796.067214]  [<ffffffff8105e65f>] warn_slowpath_null+0xf/0x20
> [77796.067222]  [<ffffffff81479281>] tcp_fastretrans_alert+0x461/0xc20
> [77796.067230]  [<ffffffff8147a4d4>] tcp_ack+0x284/0x6a0
> [77796.067237]  [<ffffffff81477fc6>] ? tcp_validate_incoming+0x96/0x330
> [77796.067245]  [<ffffffff8147b220>] tcp_rcv_established+0x400/0x690
> [77796.067254]  [<ffffffff814834bb>] tcp_v4_do_rcv+0xeb/0x150
> [77796.067262]  [<ffffffff81484aa5>] tcp_v4_rcv+0x5d5/0x830
> [77796.067270]  [<ffffffff814624e0>] ? ip_local_deliver_finish+0x0/0x2d0
> [77796.067280]  [<ffffffff8145a606>] ? nf_hook_slow+0xa6/0x100
> [77796.067288]  [<ffffffff814624e0>] ? ip_local_deliver_finish+0x0/0x2d0
> [77796.067296]  [<ffffffff814625b5>] ip_local_deliver_finish+0xd5/0x2d0
> [77796.067304]  [<ffffffff81462838>] ip_local_deliver+0x88/0xa0
> [77796.067311]  [<ffffffff81462035>] ip_rcv_finish+0x115/0x460
> [77796.067318]  [<ffffffff81462ac4>] ip_rcv+0x274/0x350
> [77796.067327]  [<ffffffff8143833a>] netif_receive_skb+0x38a/0x5d0
> [77796.067335]  [<ffffffff814387be>] napi_gro_complete+0x7e/0xd0
> [77796.067342]  [<ffffffff81438c57>] napi_gro_flush+0x27/0x50
> [77796.067349]  [<ffffffff81438c9f>] napi_complete+0x1f/0x50
> [77796.067373]  [<ffffffffa00ddac8>] ixgbe_clean_rxonly+0x98/0x130 [ixgbe]
> [77796.067382]  [<ffffffff81438dd7>] net_rx_action+0x107/0x250
> [77796.067391]  [<ffffffff810651fd>] __do_softirq+0xbd/0x200
> [77796.067399]  [<ffffffff81014bdd>] ? handle_irq+0x1d/0x30
> [77796.067420]  [<ffffffff810131ac>] call_softirq+0x1c/0x30
> [77796.067424]  <EOI>  [<ffffffff81014b85>] do_softirq+0x55/0x90
> [77796.067436]  [<ffffffff81065d90>] local_bh_enable_ip+0xa0/0xb0
> [77796.067446]  [<ffffffff81527364>] _spin_unlock_bh+0x14/0x20
> [77796.067453]  [<ffffffff8142780a>] release_sock+0xba/0xd0
> [77796.067460]  [<ffffffff81470038>] tcp_sendpage+0x68/0x80
> [77796.067470]  [<ffffffff81423746>] kernel_sendpage+0x16/0x30
> [77796.067478]  [<ffffffff81423796>] sock_sendpage+0x36/0x40
> [77796.067487]  [<ffffffff81140241>] pipe_to_sendpage+0x61/0x80
> [77796.067495]  [<ffffffff811402ca>] splice_from_pipe_feed+0x6a/0x120
> [77796.067502]  [<ffffffff811401e0>] ? pipe_to_sendpage+0x0/0x80
> [77796.067510]  [<ffffffff811401e0>] ? pipe_to_sendpage+0x0/0x80
> [77796.067517]  [<ffffffff811408de>] __splice_from_pipe+0x6e/0x80
> [77796.067525]  [<ffffffff811401e0>] ? pipe_to_sendpage+0x0/0x80
> [77796.067532]  [<ffffffff81140b3c>] splice_from_pipe+0x4c/0x70
> [77796.067540]  [<ffffffff81140ba0>] generic_splice_sendpage+0x10/0x20
> [77796.067548]  [<ffffffff8114147d>] do_splice_from+0x6d/0xa0
> [77796.067556]  [<ffffffff8114174b>] direct_splice_actor+0x1b/0x20
> [77796.067563]  [<ffffffff811412be>] splice_direct_to_actor+0xce/0x1c0
> [77796.067571]  [<ffffffff81141730>] ? direct_splice_actor+0x0/0x20
> [77796.067579]  [<ffffffff811413f8>] do_splice_direct+0x48/0x60
> [77796.067589]  [<ffffffff8111f0e1>] do_sendfile+0x1a1/0x240
> [77796.067598]  [<ffffffff8111f201>] sys_sendfile64+0x81/0xa0
> [77796.067607]  [<ffffffff81011fc2>] system_call_fastpath+0x16/0x1b
> [77796.067613] ---[ end trace 876820b0d94f728a ]---

I guess this is not reproducable for you, no? ...I'll probably one day try 
to add some additional info to be printed so that we get at least some 
idea on what is causing this miscount through kerneloops.org.


-- 
 i.
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