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Date: Wed, 21 Mar 2007 23:44:56 -0800
From: Andrew Morton <akpm@linux-foundation.org>
To: "Miles Lane" <miles.lane@gmail.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
       Monakhov Dmitriy <dmonakhov@openvz.org>
Subject: Re: 2.6.21-rc4-mm1 + 4 hotfixes -- BUG: unable to handle kernel
 paging request at virtual address 6b6b6ceb -- EIP is at module_put+0x7/0x1f
Message-Id: <20070321234456.946d1742.akpm@linux-foundation.org>
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References: <a44ae5cd0703220029lb4df507ne21da177f7c05008@mail.gmail.com>
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On Thu, 22 Mar 2007 00:29:54 -0700 "Miles Lane" <miles.lane@gmail.com> wrote:

> kobject 0000:01:06.0: cleaning up
> kobject firmware: cleaning up
> BUG: unable to handle kernel paging request at virtual address 6b6b6ceb
>  printing eip:
> c0137c22
> *pde = 00000000
> Oops: 0002 [#1]
> last sysfs file:
> devices/pci0000:00/0000:00:1e.0/0000:01:06.0/firmware/0000:01:06.0/loading
> Modules linked in: intel_rng rng_core ac97_bus snd_pcm_oss
> snd_mixer_oss mmc_core ipw2200 snd_pcm snd_seq_dummy snd_seq_oss
> fw_ohci fw_core yenta_socket rsrc_nonstatic pcmcia_core ieee80211
> ieee80211_crypt snd_seq_midi_event snd_seq snd_timer snd_seq_device
> iTCO_wdt tifm_7xx1 tifm_core snd psmouse iTCO_vendor_support intel_agp
> agpgart rtc soundcore shpchp pci_hotplug evdev snd_page_alloc ext3 jbd
> mbcache sg sr_mod cdrom sd_mod pata_acpi ata_piix ohci1394 ieee1394
> 8139too mii libata scsi_mod ehci_hcd uhci_hcd usbcore thermal
> processor fan
> CPU:    0
> EIP:    0060:[<c0137c22>]    Not tainted VLI
> EFLAGS: 00010202   (2.6.21-rc4-mm1 #4)
> EIP is at module_put+0x7/0x1f
> eax: 6b6b6b6b   ebx: c34bea98   ecx: c01618d2   edx: 00000001
> esi: c3580000   edi: c34ba2fc   ebp: c3597f38   esp: c3597f38
> ds: 007b   es: 007b   fs: 00d8  gs: 0033  ss: 0068
> Process firmware_helper (pid: 1895, ti=c3596000 task=c35a40b0 task.ti=c3596000)
> Stack: c3597f48 c019db66 00000008 c3569548 c3597f70 c0165eee 00000000 00000000
>        c39bc5f8 c1c12118 c3569548 c34ba2fc c3590310 00000000 c3597f80 c0166036
>        c34ba2fc c34ba2fc c3597f98 c0163ac6 c3590334 00000003 c3590310 c3590334
> Call Trace:
>  [<c0104c22>] show_trace_log_lvl+0x1a/0x2f
>  [<c0104cd2>] show_stack_log_lvl+0x9b/0xaa
>  [<c0104e97>] show_registers+0x1b6/0x288
>  [<c010505d>] die+0xf4/0x209
>  [<c0114b20>] do_page_fault+0x45d/0x529
>  [<c028a10c>] error_code+0x74/0x7c
>  [<c019db66>] release+0x2a/0x37
>  [<c0165eee>] __fput+0xbe/0x168
>  [<c0166036>] fput+0x31/0x35
>  [<c0163ac6>] filp_close+0x54/0x5c
>  [<c0164a97>] sys_close+0x6f/0xa7
>  [<c0103c94>] sysenter_past_esp+0x5d/0x99
>  =======================

yeah, please try

ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.21-rc4/2.6.21-rc4-mm1/hot-fixes/revert-driver-core-handles-kobject_uevent-failure-while-device_add.patch

That might make things happier, but I don't see why the original patch
would cause an oops.  So if
revert-driver-core-handles-kobject_uevent-failure-while-device_add.patch
fixes the oops then we probably have another bug in there.