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Date: Mon, 22 Jun 2009 15:49:43 +0200
From: Andi Kleen <ak@linux.intel.com>
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To: Maciej Rutecki <maciej.rutecki@gmail.com>
CC: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       "H. Peter Anvin" <hpa@zytor.com>, "Rafael J. Wysocki" <rjw@sisk.pl>
Subject: Re: 2.6.30-git(16 and 17) system hangs after resume from suspend
 to 	disk, mce related?
References: <8db1092f0906211002y2b391212ve2902fc3a6517586@mail.gmail.com>	 <4A3E7F38.7030300@linux.intel.com>	 <8db1092f0906211313x73ac9340n9af5775b56cfd189@mail.gmail.com>	 <4A3EE668.5090400@jp.fujitsu.com>	 <8db1092f0906220019x1560c26dsd5a6daa3ea612ec@mail.gmail.com>	 <4A3F55C7.4030909@linux.intel.com>	 <8db1092f0906220453k5595998er1400567cbcdf3e12@mail.gmail.com>	 <4A3F7A93.5080004@linux.intel.com> <8db1092f0906220627w61d9f97g88c91f770f732f03@mail.gmail.com>
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> [   68.287417] ata2.01: ACPI cmd ef/03:0c:00:00:00:b0 filtered out
> [   68.290331] ata2.00: ACPI cmd ef/03:0c:00:00:00:a0 filtered out
> [   68.302257] ata1.00: ACPI cmd ef/03:45:00:00:00:a0 filtered out
> [   68.324357] ata1.00: configured for UDMA/133
> [   69.656127] btusb 4-1:1.0: no reset_resume for driver btusb?
> [   70.708015] usb 5-2: reset low speed USB device using uhci_hcd and address 3
> 
> It seems, that resume isn't resume completely.

The USB reset messages are normally not serious

> 
> 
> Also I try 20 seconds and find this in netconsole:
> [  532.576128] BUG: soft lockup - CPU#1 stuck for 61s! [ksensors:2670]
> [  532.576128] Modules linked in: i915 drm i2c_algo_bit video
> backlight output ppdev lp rfcomm l2cap xt_tcpudp xt_limit snd[
> 532.576128]  DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
> [  532.576128]  [<c01a266d>] sys_read+0x3d/0x70

Hmm strange lockup in the VFS, but in sensors context. Might or might not
be related.

Here's a debug patch for the poller: http://firstfloor.org/ak/mcp-debug
Can you apply that and try again and send me the output?

Thanks,

-Andi
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