linux-kernel - Re: rmmod/delete_module hangs forever

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Date:	Thu, 19 Mar 2009 13:18:05 -0700
From:	"Robin H. Johnson" <robbat2@...too.org>
To:	linux-kernel@...r.kernel.org
Subject: Re: rmmod/delete_module hangs forever

On Sat, Mar 14, 2009 at 02:39:47PM -0700, Robin H. Johnson wrote:
> Strace gives me this fun in the end:
> delete_module("button", O_RDONLY|O_EXCL|O_NONBLOCK
> and it just sits there.
Ok, after much head-scratching and bisect-powered reboots I have
disproved for myself that this is a kernel issue.

Instead it's some weird interaction between certain BIOS settings on my
motherboard (ASUS P5Q Premium) and my SCSI controller (HP SC11Xe,
FusionMPT based) I use for tape specifically when there are no SCSI
devices on the bus. Skipping the mptspi module, or connecting a SCSI
device causes the problem to go away, ditto changing some settings in
the BIOS that cause IRQs to be allocated differently.

-- 
Robin Hugh Johnson
Gentoo Linux Developer & Infra Guy
E-Mail     : robbat2@...too.org
GnuPG FP   : 11AC BA4F 4778 E3F6 E4ED  F38E B27B 944E 3488 4E85

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