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Subject: Re: PROBLEM: oops
From: Peter Zijlstra <peterz@infradead.org>
To: =?UTF-8?Q?Pawe=C5=82_Go=C5=82aszewski?= <blues@gda.pl>
Cc: linux-kernel@vger.kernel.org, Ingo Molnar <mingo@elte.hu>
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Date: Tue, 25 Aug 2009 16:06:46 +0200
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On Tue, 2009-08-25 at 15:55 +0200, Paweł Gołaszewski wrote:
> No matter which kernel I'm using (2.6.27 - 2.6.30) it crashes. Works for 
> few minutes and crashes. Even SysRq doesn't work.
> 
> Dunno how to trigger it on other machine than mine (I have two, both 
> affected). If more info is required - just ask.
> [...]
> [24483.211036] BUG: unable to handle kernel NULL pointer dereference at 00000058
> [24483.211144] IP: [<c081cf9a>] pick_next_task_fair+0x6a/0x100
> [24483.211247] Oops: 0000 [#1] SMP 
> [24483.211300] Modules linked in: netconsole configfs dm_mod softdog sch_sfq xfs raid10 uhci_hcd eepro100 ppdev parport_pc floppy parport ehci_hcd e100 piix i2c_piix4 thermal psmouse e1000 container ide_core usbcore mii button pcspkr serio_raw processor i2c_core sg evdev ext3 jbd mbcache scsi_wait_scan sd_mod crc_t10dif ata_piix libata dock aic7xxx sym53c8xx scsi_transport_spi scsi_mod raid1 md_mod
> [24483.211878] 
> [24483.211910] Pid: 1677, comm: md2_raid10 Not tainted (2.6.27.31-1 #1)

So you're saying .30 crashes at the exact same place?