netdev - WARNING: at net/ipv4/tcp

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Message-ID: <alpine.DEB.2.01.1202261556150.4930@trent.utfs.org>
Date:	Sun, 26 Feb 2012 16:05:57 -0800 (PST)
From:	Christian Kujau <lists@...dbynature.de>
To:	netdev@...r.kernel.org
cc:	markus@...ppelsdorf.de
Subject: WARNING: at net/ipv4/tcp_input.c:3418

Hi,

I'm getting the same message here on PowerPC (32bit):

------------[ cut here ]------------
WARNING: at /usr/local/src/linux-2.6-git/net/ipv4/tcp_input.c:3418
Modules linked in: tun nfs ecryptfs netconsole therm_adt746x aes_generic 
arc4 b43 i2c_powermac sd_mod firewire_sbp2 mac80211 cfg80211 usb_storage 
scsi_mod
NIP: c04720c4 LR: c04720b8 CTR: c049f2c8
REGS: efff1c20 TRAP: 0700   Tainted: G        W     (3.3.0-rc4)
MSR: 00029032 <EE,ME,IR,DR,RI>  CR: 42048448  XER: 20000000
TASK = ee666780[1964] 'milkyway_0.50_p' THREAD: ee6c6000
GPR00: ffffffff efff1cd0 ee666780 ee70c0a0 0000000b ffffffff c0426e70 00000000 
GPR08: 0000000b 00000001 00000000 00000009 42048448 1013488c 00000000 4f4a260f 
GPR16: 29c2cc42 00000502 00000000 000001cb 000001cb ee70c1b0 0000000b 00000000 
GPR24: 00000001 0000000c ffffffff ecef8580 0000000b 3c176da7 ee70c0a0 c0690000 
NIP [c04720c4] tcp_ack+0x720/0x10a0
LR [c04720b8] tcp_ack+0x714/0x10a0
Call Trace:
[efff1cd0] [c04720b8] tcp_ack+0x714/0x10a0 (unreliable)
[efff1d60] [c04756f0] tcp_rcv_established+0x214/0x6c4
[efff1d90] [c047d1dc] tcp_v4_do_rcv+0xd8/0x2a4
[efff1dd0] [c047db0c] tcp_v4_rcv+0x764/0x8e4
[efff1e10] [c045ac6c] ip_local_deliver+0xe0/0x1dc
[efff1e30] [c045a870] ip_rcv+0x378/0x694
[efff1e50] [c04302c8] __netif_receive_skb+0x320/0x52c
[efff1eb0] [c0430790] napi_skb_finish+0x6c/0x90
[efff1ec0] [c03b2e20] gem_poll+0x694/0x1274
[efff1f50] [c0430ccc] net_rx_action+0x1d4/0x278
[efff1fa0] [c003bac0] __do_softirq+0xf4/0x1bc
[efff1ff0] [c00103b0] call_do_softirq+0x14/0x24
[ee6c7ee0] [c00070ac] do_softirq+0xfc/0x128
[ee6c7f00] [c003b73c] irq_exit+0xac/0xcc
[ee6c7f10] [c00071d8] do_IRQ+0x8c/0x1b0
[ee6c7f40] [c0012e60] ret_from_except+0x0/0x14
Instruction dump:
2f800000 419e0020 73250008 4182046c 38a0ffff 7ec4b378 7fc3f378 7c0903a6 
4e800421 801e04e8 7c1a0378 54090ffe <0f090000> 809e04e4 54890ffe 0f090000 
---[ end trace de136ca1488e7a83 ]---
Leak s=4294967295 1


Yesterday the machine panick'ed and shutdown shortly after the message 
appeared. From today's logs I can see the message appeared some 10 hours 
ago but the machine is still up & running. I've been running 3.3.0-rc4 for 
some time now, but network activity went up a few days ago, so that 
might've triggered it.

Ful dmesg & .config: http://nerdbynature.de/bits/3.3.0-rc4/ipv4/

Note: the machine's internal battery seems to be bad, that's why the 
timestamps during bootup are b0rked in those logfiles.

Please Cc me on replies as I'm not subscribed to netdev.

Thanks,
Christian.
-- 
BOFH excuse #444:

overflow error in /dev/null
--
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