linux-kernel - Re: [2.6.30] Kernel bug with dock driver

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Message-Id: <1245222796.9076.93.camel@rzhang-dt>
Date:	Wed, 17 Jun 2009 15:13:16 +0800
From:	Zhang Rui <rui.zhang@...el.com>
To:	"jplatte@...sa.net" <jplatte@...sa.net>
Cc:	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Henrique de Moraes Holschuh <hmh@....eng.br>
Subject: Re: [2.6.30] Kernel bug with dock driver

this seems like an thinkpad_acpi driver problem.
cc henrique.

jplatte,
it would be great if you can verify if this is a regression or not.
And please file a new bug report at
http://bugzilla.kernel.org/enter_bug.cgi?product=ACPI
attach the full dmesg after the bug and the acpidump output there.

thanks,
rui



On Mon, 2009-06-15 at 03:00 +0800, Joerg Platte wrote:
> Hi,
> 
> today I ran into the following bug several times (Kernel 2.6.30, IBM ThinkPad 
> T40 with ultrabay HD and CD/DVD):
> 
> BUG: unable to handle kernel paging request at 00001000
> IP: [<c01df5fa>] strcpy+0xe/0x1b
> *pde = 00000000
> Oops: 0000 [#1] PREEMPT
> last sysfs file: /sys/class/power_supply/BAT0/energy_full
> Modules linked in: nls_iso8859_1 nls_cp850 vfat fat usb_storage usb_libusual
> udf crc_itu_t sg sr_mod cdrom nfsd lockd nfs_acl auth_rpcgss sunrpc exportfs
> radeon drm sco bridge stp llc bnep l2cap bluetooth ipt_MASQUERADE
> iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state ipt_REJECT
> ipt_LOG xt_limit xt_tcpudp xt_mac xt_multiport iptable_filter iptable_mangle
> ip_tables x_tables nf_conntrack_ftp nf_conntrack vboxdrv binfmt_misc
> af_packet cpufreq_userspace cpufreq_stats cpufreq_powersave nsc_ircc autofs4
> fuse nls_utf8 ntfs nls_base ext2 deadline_iosched as_iosched ircomm_tty
> ircomm tun acpi_cpufreq sbs sbshc snd_intel8x0m snd_intel8x0 snd_ac97_codec
> ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_oss snd_seq_midi
> snd_rawmidi snd_seq_midi_event joydev snd_seq snd_timer snd_seq_device
> dvb_usb_cinergyT2 thinkpad_acpi irtty_sir dvb_usb yenta_socket
> rsrc_nonstatic ipw2200 pcmcia libipw sir_dev rfkill snd video led_class
> lib80211 i2c_i801 rng_core soundcore pcmcia_core snd_page_alloc 8250_pci
> dvb_core irda parport_pc parport crc_ccitt psmouse pcspkr nvram output
> battery ac button processor rtc_cmos 8250_pnp serio_raw rtc_core rtc_lib
> 8250 serial_core evdev ext3 jbd mbcache usbhid hid sd_mod ata_generic
> pata_acpi ata_piix uhci_hcd ehci_hcd libata e1000 usbcore scsi_mod intel_agp
> agpgart thermal fan unix cpufreq_conservative cpufreq_ondemand freq_table
> radeonfb fb_ddc backlight i2c_algo_bit cfbcopyarea i2c_core cfbimgblt
> cfbfillrect fbcon tileblit font bitblit softcursor fb
> 
> Pid: 52, comm: kacpi_notify Not tainted (2.6.30 #1) 2373G1G
> EIP: 0060:[<c01df5fa>] EFLAGS: 00010286 CPU: 0
> EIP is at strcpy+0xe/0x1b
> EAX: c278a22c EBX: c278a200 ECX: c278a22c EDX: 00001000
> ESI: 00001000 EDI: c278a22c EBP: f70a8f34 ESP: f70a8f28
>  DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
> Process kacpi_notify (pid: 52, ti=f70a8000 task=f70c0c40 task.ti=f70a8000)
> Stack:
>  c278a200 c278a214 c278a244 f70a8f64 c01fc898 030a8f54 00001000 f708a879
>  00000002 f6b3ca80 c278a218 00000014 f97fb132 f0a07a80 00000000 f70a8f70
>  f97fb14e 00000000 f70a8f7c f97fb023 f7041460 f70a8f8c c020199d f6984ac0
> Call Trace:
>  [<c01fc898>] ? acpi_bus_generate_netlink_event+0x140/0x199
>  [<f97fb132>] ? bay_notify+0x0/0x1f [thinkpad_acpi]
>  [<f97fb14e>] ? bay_notify+0x1c/0x1f [thinkpad_acpi]
>  [<f97fb023>] ? dispatch_acpi_notify+0x23/0x26 [thinkpad_acpi]
>  [<c020199d>] ? acpi_ev_notify_dispatch+0x4c/0x57
>  [<c01f4558>] ? acpi_os_execute_deferred+0x20/0x2c
>  [<c012cff6>] ? worker_thread+0x15a/0x1fd
>  [<c01f4538>] ? acpi_os_execute_deferred+0x0/0x2c
>  [<c012fc7d>] ? autoremove_wake_function+0x0/0x33
>  [<c012ce9c>] ? worker_thread+0x0/0x1fd
>  [<c012f8bc>] ? kthread+0x42/0x67
>  [<c012f87a>] ? kthread+0x0/0x67
>  [<c01030d3>] ? kernel_thread_helper+0x7/0x10
> Code: ff ff 21 e3 8b 5b 18 83 eb 07 39 d9 73 08 89 01 89 51 04 31 c0 c3 b8
> f2 ff ff ff c3 90 55 89 c1 89 e5 57 89 c7 56 89 d6 83 ec 04 <ac> aa 84 c0 75
> fa 5a 89 c8 5e 5f 5d c3 55 89 e5 57 89 c7 56 89
> EIP: [<c01df5fa>] strcpy+0xe/0x1b SS:ESP 0068:f70a8f28
> CR2: 0000000000001000
> ---[ end trace fe729b61cde0024d ]---
> 
> The bug message appears with a high probability - but not always - when I 
> release the eject lever to exchange the drive in the ultrabay slot. I'm not 
> sure if this bug is a regression of 2.6.30, because I did not change the drive 
> in the ultrabay for several months. Maybe it was already in 2.6.29 or before. 
> How can I help to resolve this bug?
> 
> regards,
> Jörg
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