linux-kernel - 2.6.31.14: firewire_net issue in generic_sync_sb

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Date:	Thu, 22 Jul 2010 12:50:08 +0200
From:	Martin Mokrejs <mmokrejs@...osome.natur.cuni.cz>
To:	LKML <linux-kernel@...r.kernel.org>
Subject: 2.6.31.14: firewire_net issue in generic_sync_sb_inodes

Hi,
  I have a laptop temporarily connected via firewire 1394a to another machine.
The machine cannot sync using Alt+SysRQ+s since some conditions. Sometimes it
locks up completely and only keyboard leds are flashing and CPU fan runs at
max speed. Attached is one stacktrace I have, the other lockups are more serious
and until I find a serial cable I cannot tell you more. I cannot go for 2.6.32 or
higher here but in theory could test them temporarily. There are two firewire ports
on this Asus L3C/S laptop.
  

# lspci
00:00.0 Host bridge: Intel Corporation 82845 845 [Brookdale] Chipset Host Bridge (rev 04)
00:01.0 PCI bridge: Intel Corporation 82845 845 [Brookdale] Chipset AGP Bridge (rev 04)
00:1d.0 USB Controller: Intel Corporation 82801CA/CAM USB Controller #1 (rev 02)
00:1d.1 USB Controller: Intel Corporation 82801CA/CAM USB Controller #2 (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 42)
00:1f.0 ISA bridge: Intel Corporation 82801CAM ISA Bridge (LPC) (rev 02)
00:1f.1 IDE interface: Intel Corporation 82801CAM IDE U100 Controller (rev 02)
00:1f.3 SMBus: Intel Corporation 82801CA/CAM SMBus Controller (rev 02)
00:1f.5 Multimedia audio controller: Intel Corporation 82801CA/CAM AC'97 Audio Controller (rev 02)
00:1f.6 Modem: Intel Corporation 82801CA/CAM AC'97 Modem Controller (rev 02)
01:00.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility M7 LW [Radeon Mobility 7500]
02:05.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
02:07.0 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev a8)
02:07.1 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev a8)
02:07.2 FireWire (IEEE 1394): Ricoh Co Ltd R5C552 IEEE 1394 Controller
#

Thanks for any clues,
Martin

View attachment "dmesg-crash-firewire-net.txt" of type "text/plain" (31371 bytes)