[1982] in linux-scsi channel archive
Re: scsi.c module patch
daemon@ATHENA.MIT.EDU (Andrea Arcangeli)
Thu Jun 12 04:54:44 1997
Date: Thu, 12 Jun 1997 10:50:34 +0200 (CEST)
From: Andrea Arcangeli <arcangeli@mbox.queen.it>
To: "Leonard N. Zubkoff" <lnz@dandelion.com>
cc: linux-scsi@vger.rutgers.edu
In-Reply-To: <199706112356.QAA12245@dandelion.com>
On Wed, 11 Jun 1997, Leonard N. Zubkoff wrote:
> Date: Thu, 12 Jun 1997 00:53:52 +0200 (CEST)
> From: Andrea Arcangeli <arcangeli@mbox.queen.it>
>
> I have fixed the bug that causes my kernel to crash doing the script:
>
> #!/bin/sh
> while :; do
> modprobe ppa
> modprobe -r ppa
> done
>
> The crash was caused from the execution of the scsi_main_timeout function
> by the SCSI_TIMER when the module was just cleared from memory.
>
> So I have stopped the SCSI_TIMER before clear the module from memory.
>
>Can you look into *why* the timer is still active? There shouldn't be any
>active commands for the SCSI module when it is being unloaded, and hence the
>timer should already have been inactivated by update_timeout. If it hasn't
Yes, but the problem cames when the SCSI_TIMER is programmed to run
update_timeout after insmod ppa and then I run rmmod scsi_mod before
update_timeout is run. rmmod set .fn = 0 and I get an Oops with
EIP=00000000.
>been, then there's a deeper underlying problem and this patch is just masking
>the incorrect behavior.
Please explain better.
Have you tryed to run the script with scsi_mod as module?
Andrea Arcangeli
arcangeli@mbox.queen.it
HomePage: http://www.imola.queen.it/user/arcangeli/
Debian Mirror: ftp://dida43.deis.unibo.it/pub/debian/
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