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Re: HIGHMEM lockups with XFS fs

To: Bryan Whitehead <driver@xxxxxxxxxxxx>
Subject: Re: HIGHMEM lockups with XFS fs
From: Eric Sandeen <sandeen@xxxxxxx>
Date: Mon, 11 Nov 2002 19:35:34 -0600 (CST)
Cc: linux-xfs@xxxxxxxxxxx
In-reply-to: <3DD03603.7050106@xxxxxxxxxxxx>
Sender: linux-xfs-bounce@xxxxxxxxxxx
Hi Bryan - 

We're big fans of kdb around here, if you could compile with kdb, break
into it when you lock up, and do a backtrace on some (or all...)
of the processes, that would be a good start.

kdb> ps         will give you a process list
kdb> btp <pid>  will backtrace <pid>
kdb> bta        will backtrace all pids

-Eric

On Mon, 11 Nov 2002, Bryan Whitehead wrote:

> I've run memtest to verify that all my memory is ok. When I remove all 
> XFS partitions and run ext3 I don't get lockups.
> 
> The hard lock keeps me from even syncing the disk (Alt-SysRq-S). I was 
> however with a serial-console get some information. I attached the boot 
> sequence allong with the alt-sysrq output after lockup.
> 
> I have the time to help track this bug down, just give me instructions 
> on what you'd like me todo. (I can rebuild and patch kernels if needed)
> 
> -- 
> Bryan Whitehead
> SysAdmin - JPL - Interferometry Systems and Technology
> Phone: 818 354 2903
> driver@xxxxxxxxxxxx
> 


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