linux-kernel - Re: 2.6.25-rc1-sha1: WARNING: at lib/kref.c:43 kref

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Message-Id: <20080218045925.40fc5ddb.akpm@linux-foundation.org>
Date:	Mon, 18 Feb 2008 04:59:25 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Alexey Dobriyan <adobriyan@...ru>
Cc:	linux-kernel@...r.kernel.org, Kay Sievers <kay.sievers@...y.org>,
	Greg KH <greg@...ah.com>
Subject: Re: 2.6.25-rc1-sha1: WARNING: at lib/kref.c:43 kref_get+0x20/0x30()

On Fri, 15 Feb 2008 14:08:53 +0300 Alexey Dobriyan <adobriyan@...ru> wrote:

> Booting without SYSFS fills dmesg like this

Does the system normally boot without sysfs?  Surprised.

> ------------[ cut here ]------------
> WARNING: at lib/kref.c:43 kref_get+0x20/0x30()
> Modules linked in: loop(+)
> Pid: 994, comm: modprobe Tainted: G   M     2.6.25-rc1 #6
> 
> Call Trace:
>  [<ffffffff802317f4>] warn_on_slowpath+0x64/0x90
>  [<ffffffff8028db08>] init_object+0x88/0xa0
>  [<ffffffff8028f55e>] __slab_alloc+0xbe/0x550
>  [<ffffffff8031aa28>] kvasprintf+0x58/0x90
>  [<ffffffff8031874c>] vsnprintf+0x33c/0x6e0
>  [<ffffffff8031aa41>] kvasprintf+0x71/0x90
>  [<ffffffff8022c597>] hrtick_set+0x77/0x140
>  [<ffffffff80314860>] kref_get+0x20/0x30
>  [<ffffffff80313932>] kobject_get+0x12/0x20
>  [<ffffffff803139f9>] kobject_add_internal+0x49/0xf0
>  [<ffffffff80313bb3>] kobject_add_varg+0x73/0x80
>  [<ffffffff80313fa4>] kobject_add+0x54/0x80
>  [<ffffffff8028ec53>] check_object+0x103/0x230
>  [<ffffffff8028db08>] init_object+0x88/0xa0
>  [<ffffffff80313744>] kobject_create+0x14/0x40
>  [<ffffffff8028fbd3>] kmem_cache_alloc+0xd3/0xe0
>  [<ffffffff803136b4>] kobject_init+0x34/0xb0
>  [<ffffffff8031375b>] kobject_create+0x2b/0x40
>  [<ffffffff8031400c>] kobject_create_and_add+0x3c/0x80
>  [<ffffffff8025e137>] load_module+0x1847/0x1970
>  [<ffffffff80288800>] alloc_pages_current+0x0/0x90
>  [<ffffffff8025e2c2>] sys_init_module+0x62/0x1a0
> 

Is this a regression?
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