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Subject: Re: 2.6.25-rc3-mm1
From: Kay Sievers <kay.sievers@vrfy.org>
To: Pavel Emelyanov <xemul@openvz.org>
Cc: Andrew Morton <akpm@linux-foundation.org>, linux-kernel@vger.kernel.org,
       Greg KH <gregkh@suse.de>
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Date: Wed, 05 Mar 2008 14:54:20 +0100
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On Wed, 2008-03-05 at 16:38 +0300, Pavel Emelyanov wrote:
> Kay Sievers wrote:
> > On Wed, 2008-03-05 at 16:04 +0300, Pavel Emelyanov wrote:
> >> With CONFIG_SYSFS not set got this on boot:
> >>
> >> kobject: '<NULL>' (f88774c8): is not initialized, yet kobject_put() is
> >> ------------[ cut here ]------------
> >> WARNING: at lib/kobject.c:652 kobject_put+0x29/0x3c()
> >> Modules linked in: sky2 e1000
> >> Pid: 1303, comm: modprobe Not tainted 2.6.25-rc3-mm1 #79
> >>  [<c041855b>] warn_on_slowpath+0x40/0x66
> >>  [<c041c687>] irq_exit+0x50/0x67
> >>  [<c040cc70>] smp_apic_timer_interrupt+0x6e/0x7a
> >>  [<c0403380>] apic_timer_interrupt+0x28/0x30
> >>  [<c0418e36>] vprintk+0x2b0/0x2df
> >>  [<c04118e8>] __update_rq_clock+0x1d/0x110
> >>  [<c0565e43>] schedule_timeout+0x13/0x86
> >>
> >>  [<c05656c2>] wait_for_common+0xd1/0x123
> >>  [<c0418e79>] printk+0x14/0x18
> >>  [<c04b34bf>] kobject_put+0x29/0x3c
> >>  [<c0431e39>] free_module+0x2f/0x72
> >>  [<c04328dd>] sys_init_module+0xa61/0x15d2
> >>
> >>  [<c04ba863>] pci_bus_read_config_byte+0x0/0x58
> >>  [<c0454f87>] vfs_read+0x6c/0x8b
> >>  [<c0455323>] sys_read+0x3c/0x63
> >>  [<c04028b2>] sysenter_past_esp+0x5f/0x85
> >>
> >>  =======================
> >> ---[ end trace d50646e8e8e48682 ]---
> > 
> > Does this fix it?:
> > 
> > http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=120fc3d77acfd91f3521737a440d42839c475982
> 
> This is already in 2.6.25-rc3-mm1, so the answer is "no it does not" :)

Ok. Care to enable CONFIG_DEBUG_KOBJECT, and post the part of the log
that happens right before the WARN()? We might get a hint where to look
for the stuff that goes wrong.

Thanks,
Kay

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