Re: 2.6.32.1: BUG and panic: unable to handle kernel NULL pointer dereference at 000000000000001f

[Andi Kleen <andi@firstfloor.org>]

On Thu, Dec 24, 2009 at 02:04:25PM +0100, Peter Palfrader wrote:
> On Tue, 22 Dec 2009, Peter Palfrader wrote:
> 
> > On Tue, 22 Dec 2009, Peter Palfrader wrote:
> > 
> > > > If that doesn't help perhaps disable CONFIG_HID_GYRATION,
> > > > but from your other oops something more seems to be broken anyways.
> > > 
> > > This is a static kernel - no module support.  Anyway, I also tried
> > > without CONFIG_USB_HID (which pulls in all the other HID_* things) but
> > > no luck.
> > 
> > However, disabling all of HID (CONFIG_HID_SUPPORT=n) makes the system
> > boot (Previously HID, HIDRAW and HID_SUPPORT were still enabled).

It's suspicious if you don't have such devices, that would
point to something being confused in the driver probing 
layer.

> 
> However, I still see panics on boot occassionally, tho not so often or
> reproducible.  So far only on dl385 (opteron) systems.

Multiple systems and the same oopses?

> 
> And all of the backtraces go through sysfs_new_dirent() near the top.

Please post full oopses.

-Andi

-- 
ak@linux.intel.com -- Speaking for myself only.