From: Mike Anderson <andmike@us.ibm.com>
To: Fredrik Tolf <fredrik@dolda2000.com>
Cc: Patrick Mansfield <patmans@us.ibm.com>, linux-kernel@vger.kernel.org
Subject: Re: Elevator bug in concert with usb-storage
Date: Fri, 24 Oct 2003 23:27:59 -0700 [thread overview]
Message-ID: <20031025062759.GB1288@beaverton.ibm.com> (raw)
In-Reply-To: <16280.9893.292564.320412@pc7.dolda2000.com>
Fredrik Tolf [fredrik@dolda2000.com] wrote:
> Sorry, that didn't work well. It doesn't crash on the same thing
> anymore, but nonetheless crashes. In addition, when I have removed the
> device but not yet umounted the filesystem, I tried to ls its root
> dir. Before, nothing extraordinary happened then, but now there's a
> couple of oopses for the ls process as well.
>
> .. snip ..
>
> Call Trace:
> [<c02176b3>] elv_queue_empty+0x1d/0x20
> [<c0219ab4>] __make_request+0x80/0x4ae
> [<c021a016>] generic_make_request+0x134/0x186
I tried to reproduce this error last night using the scsi_debug driver,
but could not. I tried different combinations of file systems (fat, ext2,
ext3). I did notice that I had elevator=deadline on the cmdline. I
removed this in case the elevator_queue_empty_fn between the two
elevators made a difference. I still was unable to reproduce. I will try
a few more combinations of things this weekend and let you know what I
find out. There might be a race still with our cleanups and I am not
able to reproduce it exactly on my system.
-andmike
--
Michael Anderson
andmike@us.ibm.com
next prev parent reply other threads:[~2003-10-25 6:24 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-23 2:25 Elevator bug in concert with usb-storage Fredrik Tolf
2003-10-23 2:48 ` Nick Piggin
2003-10-23 15:27 ` Patrick Mansfield
2003-10-23 19:06 ` Fredrik Tolf
2003-10-25 6:27 ` Mike Anderson [this message]
2003-10-25 11:46 ` Fredrik Tolf
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