Re: [crash, bisected] I2C, kobject (ffff81003e8c4160): tried to init an initialized object

Jean Delvare
2008-07-16T10:08:25Z

On Wed, 16 Jul 2008 11:07:02 +0200, Jean Delvare wrote:
> Hi Ingo,
>
> On Wed, 16 Jul 2008 10:23:52 +0200, Ingo Molnar wrote:
> >
> > hi Jean,
> >
> > * Jean Delvare <khali@linux-fr.org> wrote:
> >
> > > i2c-nforce2: Add support for multiplexing on the Tyan S4985
> >
> > -tip random boot testing started triggering the following upstream boot
> > crash, starting two days ago when the i2c tree was merged:
> >
> > [ 11.772002] kobject (ffff81003e8c4160): tried to init an initialized object, something is seriously wrong.
> > [ 11.784004] Pid: 1, comm: swapper Not tainted 2.6.26-00007-g279e902-dirty #19896
> > [ 11.793651]
> > [ 11.793651] Call Trace:
> > [ 11.793651] [<ffffffff8054471a>] kobject_init+0x7a/0x80
> > [ 11.798969] [<ffffffff805f0f9d>] device_initialize+0x2d/0xd0
> > [ 11.806323] [<ffffffff805f19a1>] device_register+0x11/0x20
> > [ 11.811903] [<ffffffff8087ee3b>] i2c_register_adapter+0xab/0x1d0
> > [ 11.817666] [<ffffffff8087f0e6>] i2c_add_adapter+0x96/0xb0
> > [ 11.823761] [<ffffffff81196372>] nforce2_s4985_init+0x272/0x370
> > [ 11.829358] [<ffffffff8027516a>] ? getnstimeofday+0x3a/0xc0
> > [ 11.835365] [<ffffffff802728ba>] ? ktime_get_ts+0x4a/0x60
> > [ 11.840853] [<ffffffff81196100>] ? nforce2_s4985_init+0x0/0x370
> > [ 11.846859] [<ffffffff81160aa3>] kernel_init+0x123/0x300
> > [ 11.852261] [<ffffffff81160140>] ? early_idt_handler+0x0/0x74
> > [ 11.857957] [<ffffffff80228548>] child_rip+0xa/0x12
> > [ 11.863781] [<ffffffff81160140>] ? early_idt_handler+0x0/0x74
> > [ 11.868757] [<ffffffff81160980>] ? kernel_init+0x0/0x300
> > [ 11.874160] [<ffffffff8022853e>] ? child_rip+0x0/0x12
> > [ 11.879989]
> > [ 11.881141] general protection fault: 0000 [1] SMP
> > [ 11.881141] CPU 1

Good news: I can reproduce this locally. Stay tuned...

--
Jean Delvare