Re: 2.6.25-rc2 Thinkpad T30 docking fails with oops.

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On Fri, 22 Feb 2008 00:34:17 -0800
Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote:

> On Tue, 19 Feb 2008 20:47:08 +0000 Paul Martin <pm@xxxxxxxxxx> wrote:
> 
> > Now, this was working in 2.6.23, but is not in any later kernel.
> > Previously reported, but I guess that the previous report was
> > ignored due to the kernel being tainted.
> 
> Not really.  A lot of acpi-related bug reports get the
> crickets-chirping treatment.
> 
> The usual response with acpi is "please raise a bugzilla report", and
> the acpi developers do respond well to bugzilla reports.  But really,
> a recent and oops-causing regression shouldn't require such actions -
> developers should be running around with their hair on fire.
> 
> > Well, there's nothing other than pure Linus here.
> > 
> > When booted up docked, there is no oops until you try to undock.
> > 
> > Whilst I will be looking for replies in the list, I'd appreciate
> > being CC'd on any replies.
> > 
> > ACPI: \_SB_.PCI0.PCI1.DOCK - docking
> > PCI: Transparent bridge - 0000:02:03.0
> > ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PCI1.DOCK._PRT]
> > BUG: unable to handle kernel NULL pointer dereference at 00000000
> > IP: [<c01dd6f2>] pdev_sort_resources+0x8a/0x116
> > *pde = 00000000 
> > Oops: 0000 [#1] PREEMPT SMP 
> > Modules linked in: radeon drm rfcomm l2cap bluetooth ppdev lp ipv6
> > ext3 jbd mbcache fuse dm_crypt crypto_blkcipher dm_mod
> > cpufreq_stats speedstep_ich speedstep_lib thinkpad_acpi nvram
> > acpiphp bay dock pcmcia firmware_class joydev yenta_socket
> > rsrc_nonstatic pcmcia_core battery irtty_sir ac sir_dev
> > snd_intel8x0 snd_ac97_codec nsc_ircc ac97_bus snd_pcm_oss
> > snd_mixer_oss snd_pcm snd_timer irda parport_pc i2c_i801 button
> > shpchp pci_hotplug crc_ccitt parport snd psmouse intel_agp agpgart
> > iTCO_wdt evdev serio_raw soundcore snd_page_alloc rtc pcspkr xfs
> > floppy e100 mii uhci_hcd usbcore sg sr_mod cdrom sd_mod thermal
> > processor fan ata_piix libata scsi_mod radeonfb fb_ddc i2c_algo_bit
> > i2c_core
> > 
> > Pid: 39, comm: kacpi_notify Not tainted (2.6.25-rc2 #1)
> > EIP: 0060:[<c01dd6f2>] EFLAGS: 00010246 CPU: 0
> > EIP is at pdev_sort_resources+0x8a/0x116
> > EAX: 00000000 EBX: 00000000 ECX: 00000000 EDX: 00000fff
> > ESI: f5e30cc4 EDI: f74f1e80 EBP: f74f1e68 ESP: f74f1e48
> >  DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
> > Process kacpi_notify (pid: 39, ti=f74f0000 task=f74cf120
> > task.ti=f74f0000) Stack: 00000000 f5e30cf0 f74f1e80 f5e30c00
> > 00000007 f5e30c00 f74cb414 f74cb400 f74f1e9c c02a9cce f5e30c08
> > f7431f90 f7431978 f5420c00 00000000 f7d6d408 f7d6d3c0 f74f1e9c
> > 00000000 f7d6d3c8 f7d6d3c0 f74f1ed8 f9b278ca f74cb40c Call Trace:
> >  [<c02a9cce>] ? pci_bus_assign_resources+0x59/0x341
> >  [<f9b278ca>] ? acpiphp_enable_slot+0x2a1/0x3a3 [acpiphp]
> >  [<f9b27ad9>] ? handle_hotplug_event_func+0x63/0x101 [acpiphp]
> >  [<f9b27167>] ? post_dock_fixups+0x6c/0x79 [acpiphp]
> >  [<c013506e>] ? notifier_call_chain+0x2b/0x4a
> >  [<f9b27a76>] ? handle_hotplug_event_func+0x0/0x101 [acpiphp]
> >  [<f9b22168>] ? hotplug_dock_devices+0x39/0xe1 [dock]
> >  [<f9b22441>] ? dock_notify+0x75/0xc0 [dock]
> >  [<c01f83c9>] ? acpi_ev_notify_dispatch+0x4f/0x5a
> >  [<c01f32c0>] ? acpi_os_execute_deferred+0x20/0x2c
> >  [<c012ef41>] ? run_workqueue+0x78/0xfb
> >  [<c01f32a0>] ? acpi_os_execute_deferred+0x0/0x2c
> >  [<c012f79d>] ? worker_thread+0xb6/0xc2
> >  [<c0131b25>] ? autoremove_wake_function+0x0/0x30
> >  [<c012f6e7>] ? worker_thread+0x0/0xc2
> >  [<c0131a52>] ? kthread+0x3b/0x61
> >  [<c0131a17>] ? kthread+0x0/0x61
> >  [<c010568f>] ? kernel_thread_helper+0x7/0x10
> >  =======================
> > Code: 50 52 51 ff 75 f0 68 a0 af 34 c0 e8 ce 4e f4 ff 83 c4 1c e9
> > 87 00 00 00 8b 7d e8 8d 42 01 83 7d f0 06 89 7d e0 0f 4e c8 8b 45
> > e0 <8b> 18 31 c0 85 db 74 29 8b 53 04 8b 43 08 89 d7 05 8c 01 00 00
> > EIP: [<c01dd6f2>] pdev_sort_resources+0x8a/0x116 SS:ESP
> > 0068:f74f1e48 ---[ end trace 623ea8d57da4defe ]---
> 
> I suppose that if you're feeling keen, a bisection search as per
> http://www.kernel.org/doc/local/git-quick.html would help things
> along, thanks.
> 

Hi Paul,
I'll try to take a look at this today - I've got a T30 around here
somewhere I can try to duplicate.

Kristen
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