> On Sun, 3 Feb 2008 15:07:44 -0800 Andrew Morton <akpm@linux-foundation.org> wrote:
>
> > On Sun, 3 Feb 2008 15:02:46 -0800 Andrew Morton <akpm@linux-foundation.org> wrote:
> >
> > >
> > > With current mainline I'm getting intermittent hangs here:
> > >
> > >
http://userweb.kernel.org/~akpm/p2033590.jpg
> > >
> > > with this config:
> > >
> > >
http://userweb.kernel.org/~akpm/config-sony.txt
> > >
> > > on the Vaio. Sometimes it boots (then hits another different hang),
> > > sometimes it gets stuck there.
>
> CONFIG_DEBUG_LOCKING_API_SELFTESTS=n fixed that up.
>
> >
> > The second hang is in kobject_uevent_init(). All that function does is call
> > netlink_kernel_create().
>
> And I've fully bisected this hang twice and both times came up with
>
> commit 33f807ba0d9259e7c75c7a2ce8bd2787e5b540c7
> Author: Stephen Hemminger <shemminger@linux-foundation.org>
> Date: Mon Nov 19 19:24:52 2007 -0800
>
> [NETPOLL]: Kill NETPOLL_RX_DROP, set but never tested.
>
> which is stupid because that patch doesn't do anything.
>
> However I am using netconsole-over-e100 and the hang does go away when I
> disable netconsole on the kernel boot command line.
>
> I'd say it's some timing thing in netpoll/netconsole/napi/etc.
>
