linux-kernel - Re: 2.6.25-rc7: Ugh.

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Message-ID: <Pine.LNX.4.64.0803280126550.5541@jikos.suse.cz>
Date:	Fri, 28 Mar 2008 01:32:00 +0100 (CET)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Greg KH <gregkh@...e.de>, Mark Lord <lkml@....ca>
cc:	Linux Kernel <linux-kernel@...r.kernel.org>,
	linux-usb@...r.kernel.org, Pavel Machek <pavel@...e.cz>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: 2.6.25-rc7:  Ugh.

On Thu, 27 Mar 2008, Greg KH wrote:

> > It boots, but just a simple suspend/resume (RAM) was enough to kill 
> > it. It comes back on resume, with an X desktop again, but with no USB 
> > functionality -- no mouse.
> > The keyboard still works, so I dropped to a console and tried:
> >   rmmod usbhid
> >   insmod usbhid
> > And the console hung at 100% CPU on the insmod.
> Haven't heard of this one before sorry.  Jiri, have you?

No, haven't heard anything similar either. Mark, are you able to collect 
the stacktraces via alt-sysrq-t at the time the system goes crazy?

Also, as you seem to be able to easily reproduce the bug, git-bisect might 
reveal the culprit easily. For start, you can try to bisect only let's say 
usb, hid and acpi code probably ... ?

> > kernel: [  111.361099] pciehp_resume ENTRY
> > kernel: [  112.362047] pciehp: Device 0000:0c:00.0 already exists at c:0, 
> > cannot hot-add
> > kernel: [  112.362052] pciehp: Cannot add device 0xc:0

Hmm, what device is this?

-- 
Jiri Kosina
SUSE Labs
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