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Message-Id: <20080418200237.b5a9e805.akpm@linux-foundation.org>
Date:	Fri, 18 Apr 2008 20:02:37 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Joseph Fannin <jfannin@...il.com>
Cc:	linux-kernel@...r.kernel.org, Greg KH <greg@...ah.com>,
	Kay Sievers <kay.sievers@...y.org>,
	Dmitry Torokhov <dtor@...l.ru>
Subject: Re: 2.6.25-mm1

On Fri, 18 Apr 2008 22:13:43 -0400 Joseph Fannin <jfannin@...il.com> wrote:

> On Fri, Apr 18, 2008 at 01:47:57AM -0700, Andrew Morton wrote:
> >
> > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.25/2.6.25-mm1/ 
> 
> I've been seeing the following backtraces since 2.6.25-rc8-mm1 -- at
> least, since that's the earliest -mm I've built in a while.  I don't
> get the same in mainline.
> 
> No idea who to CC:

I have a few ideas.

>  I've sat on this report long enough.

Thanks for the report.

> I'm going to send a few different reports in separate mails, so I'll
> put my dmesg and .config up on a server:
> 
> http://home.columbus.rr.com/jfannin3/dmesg.txt
> http://home.columbus.rr.com/jfannin3/config-2.6.25-mm1.txt
> 
> [  451.915553] sysfs: duplicate filename 'pcspkr' can not be created
> [  451.915731] ------------[ cut here ]------------
> [  451.915851] WARNING: at fs/sysfs/dir.c:427 sysfs_add_one+0x85/0xe0()
> [  451.915981] Modules linked in: snd_pcsp(+) ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_mpu401_uart snd_seq_dummy snd_seq_oss snd_seq_midi psmouse snd_rawmidi serio_raw snd_seq_midi_event snd_seq button i2c_viapro snd_timer snd_seq_device pcspkr i2c_core snd snd_page_alloc via686a shpchp pci_hotplug parport_pc parport via_agp agpgart soundcore evdev sg sr_mod cdrom sd_mod 8139cp aic7xxx  scsi_transport_spi scsi_mod 8139too mii uhci_hcd usbcore raid10 raid456 async_xor async_memcpy async_tx xor raid1 raid0 multipath linear md_mod thermal processor fan fuse ext4dev mbcache jbd2 crc16
> [  451.918960] Pid: 2740, comm: modprobe Tainted: G        W 2.6.25-mm1 #7
> [  451.929271]  [<c0130fa9>] warn_on_slowpath+0x59/0x80
> [  451.929500]  [<c0132400>] ? vprintk+0x2f0/0x4a0
> [  451.929723]  [<c0356adc>] ? _spin_unlock+0x2c/0x50
> [  451.929918]  [<c01c6a7a>] ? ifind+0x4a/0xa0
> [  451.930126]  [<c0155216>] ? trace_hardirqs_on_caller+0x16/0x150
> [  451.930334]  [<c015535b>] ? trace_hardirqs_on+0xb/0x10
> [  451.930534]  [<c01325d0>] ? printk+0x20/0x30
> [  451.930727]  [<c01fcc45>] sysfs_add_one+0x85/0xe0
> [  451.930900]  [<c01fd89e>] create_dir+0x4e/0xb0
> [  451.931064]  [<c01fd930>] sysfs_create_dir+0x30/0x50
> [  451.931291]  [<c0356adc>] ? _spin_unlock+0x2c/0x50
> [  451.931485]  [<c023dac6>] kobject_add_internal+0xb6/0x190
> [  451.931656]  [<c023dc22>] ? kobject_set_name_vargs+0x32/0x40
> [  451.931857]  [<c023dc8a>] kobject_add_varg+0x5a/0x60
> [  451.932022]  [<c023e12f>] kobject_init_and_add+0x2f/0x40
> [  451.932188]  [<c02a3e44>] bus_add_driver+0x94/0x250
> [  451.932364]  [<c02a5062>] driver_register+0x42/0xf0
> [  451.932533]  [<c02a6c56>] platform_driver_register+0x66/0x70
> [  451.932702]  [<cc04b02a>] pcsp_init+0x2a/0x2c [snd_pcsp]
> [  451.932877]  [<c015e137>] sys_init_module+0x87/0x1a0
> [  451.933043]  [<c0155216>] ? trace_hardirqs_on_caller+0x16/0x150
> [  451.933246]  [<c024314c>] ? trace_hardirqs_on_thunk+0xc/0x10
> [  451.933453]  [<c0104077>] sysenter_past_esp+0x78/0xc5

Yes, there have been lots of these lately.  I expect some of them _will_ go
into mainline and they'll then slowly get weeded out.

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