Re: 2.6.20.git regression: 'PCI: add the sysfs driver name to allmodules' causes hard hang on boot
From: Mike Galbraith
Date: Sun Feb 18 2007 - 03:03:22 EST
On Sat, 2007-02-17 at 09:20 +0100, Mike Galbraith wrote:
> On Fri, 2007-02-16 at 17:50 -0800, Greg KH wrote:
> > On Sat, Feb 17, 2007 at 02:38:08AM +0100, Mike Galbraith wrote:
> > > On Fri, 2007-02-16 at 14:36 -0800, Greg KH wrote:
> > > > On Fri, Feb 16, 2007 at 10:55:10AM +0100, Mike Galbraith wrote:
> > > > > Greetings,
> > > > >
> > > > > Per $subject, git.yesterday hangs hard on boot here. A git bisect
> > > > > fingered the commit below, which I verified via git bisect reset; git
> > > > > revert -n 725522b5453dd680412f2b6463a988e4fd148757, after which box
> > > > > boots fine. (well, I hope I verified... i'm git-ignorant)
> > > >
> > > > If you change CONFIG_SYSFS_DEPRECATED to Y, does that solve the problem?
> > >
> > > It's already set.
> > It's not set in the config file you sent to me and the list :)
> Oops. (Lysdexic mouse, or friends+Aerosmith+beer+2:30A.M.:) Makes no
> difference. Nada from nmi_watchdog either btw.
The reason it's hanging is that nobody releases the driver, so we wait
forever in driver_unregister(). With the below, box boots fine...
--- drivers/base/bus.c.org 2007-02-18 08:38:57.000000000 +0100
+++ drivers/base/bus.c 2007-02-18 08:39:09.000000000 +0100
@@ -593,6 +593,7 @@ void bus_remove_driver(struct device_dri
...but that can't be right given that the darn thing booted just fine
prior to the naming patch with an equally unhappy init_ipmi_si(). Hmm.
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