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Date:	Sun, 17 Feb 2008 19:52:18 -0500
From:	Barnaby <diannibd@...il.com>
To:	"Dave Young" <hidave.darkstar@...il.com>
Cc:	"Marcel Holtmann" <marcel@...tmann.org>,
	LKML <linux-kernel@...r.kernel.org>, bluez-devel@...ts.sf.net,
	"David Miller" <davem@...emloft.net>
Subject: Re: 2.6.24-git16 Oops @ sysfs_move_dir w/ btdelconn

On Feb 17, 2008 4:59 AM, Dave Young <hidave.darkstar@...il.com> wrote:
>
> On Feb 16, 2008 1:16 PM, Barnaby <diannibd@...il.com> wrote:
> >
> > On Fri, Feb 15, 2008 at 6:15 PM, Dave Young <hidave.darkstar@...il.com> wrote:
> > >
> > > On Fri, Feb 15, 2008 at 8:04 AM, Barnaby <diannibd@...il.com> wrote:
> > >  > Answers at the bottom..
> > >  >
> > >  >
> > >  >
> > >  >  On 2/13/08, Dave Young <hidave.darkstar@...il.com> wrote:
> > >  >  > On Feb 8, 2008 12:57 AM, Barnaby <diannibd@...il.com> wrote:
> > >  >  >  > Hello Dave,
> > >  >  >
> > >  >  >  Add someone to cc-list
> > >  >  >
> > >  >  >
> > >  >  >  >
> > >  >  >  > Got your name and email from the 2.6.24-git16 changelog.
> > >  >  >  >
> > >  >  >  > I get these Oops when suspending or doing..
> > >  >  >  >
> > >  >  >  >  echo disable > /proc/acpi/ibm/bluetooth
> > >  >  >  > or
> > >  >  >  >  echo 0 > /sys/devices/platform/thinkpad_acpi/bluetooth_enable
> > >  >  >  >
> > >  >  >  > # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> > >  >  >  >
> > >  >  >  > Feb  7 09:19:47  BUG: unable to handle kernel NULL pointer dereference
> > >  >  >  > at 00000008
> > >  >  >  > Feb  7 09:19:47  IP: [<c0183188>] sysfs_move_dir+0x16/0x1ab
> > >  >  >  > Feb  7 09:19:47  *pde = 00000000
> > >  >  >  > Feb  7 09:19:47  Oops: 0000 [#1] PREEMPT
> > >  >  >  > Feb  7 09:19:47  Modules linked in: xt_tcpudp hidp l2cap snd_seq
> > >  >  >  > snd_seq_device snd_pcm_oss snd_mixer_oss sr_mod cdrom iptable_filter
> > >  >  >  > iptable_nat nf_conntrack_ipv4 iptable_mangle ipt_LOG xt_state ipt_ttl
> > >  >  >  > ipt_MASQUERADE nf_nat   nf_conntrack xt_DSCP ip_tables x_tables usbhid
> > >  >  >  > ipw2200 ieee80211 ieee80211_crypt thinkpad_acpi backlight acpi_cpufreq
> > >  >  >  > radeon drm intel_agp agpgart snd_intel8x0 snd_ac97_codec ac97_bus
> > >  >  >  > snd_pcm snd_timer snd soundcore             snd_page_alloc button
> > >  >  >  > thermal processor hci_usb bluetooth
> > >  >  >  > Feb  7 09:19:47
> > >  >  >  > Feb  7 09:19:47  Pid: 1412, comm: btdelconn Not tainted (2.6.24-git16 #1)
> > >  >  >  > Feb  7 09:19:47  EIP: 0060:[<c0183188>] EFLAGS: 00010246 CPU: 0
> > >  >  >  > Feb  7 09:19:47  EIP is at sysfs_move_dir+0x16/0x1ab
> > >  >  >  > Feb  7 09:19:47  EAX: c039476c EBX: f7dd0480 ECX: f6da9f58 EDX: f7dd0480
> > >  >  >  > Feb  7 09:19:47  ESI: 00000000 EDI: f5ea0c40 EBP: fffffff4 ESP: f6da9f30
> > >  >  >  > Feb  7 09:19:47  DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
> > >  >  >  > Feb  7 09:19:47  Process btdelconn (pid: 1412, ti=f6da8000
> > >  >  >  > task=f6fd1550 task.ti=f6da8000)
> > >  >  >  > Feb  7 09:19:47  Stack: f56f4ea4 f7dd0480 f5ea0c40 f56f4ea4 f7dd0480
> > >  >  >  > f5ea0c40 fffffff4 c01c71a0
> > >  >  >  > Feb  7 09:19:47  f5ea0800 c034a793 f5ea0c40 f5ea0800 f5ea0800 00000000
> > >  >  >  > f56f4e3c 00000000
> > >  >  >  > Feb  7 09:19:47  00000000 f7dd0480 c0219d48 f56f4ea4 ffffffea f56f4e3c
> > >  >  >  > f5fc7c88 f5fc7c00
> > >  >  >  > Feb  7 09:19:47  Call Trace:
> > >  >  >  > Feb  7 09:19:47  [<c01c71a0>] kobject_move+0x9e/0xeb
> > >  >  >  > Feb  7 09:19:47  [<c0219d48>] device_move+0x41/0xdf
> > >  >  >  > Feb  7 09:19:47  [<f88657f6>] del_conn+0x0/0x43 [bluetooth]
> > >  >  >  > Feb  7 09:19:47  [<f8865807>] del_conn+0x11/0x43 [bluetooth]
> > >  >  >  > Feb  7 09:19:47  [<c012339b>] run_workqueue+0x83/0x10e
> > >  >  >  > Feb  7 09:19:47  [<c0123996>] worker_thread+0x0/0xb5
> > >  >  >  > Feb  7 09:19:47  [<c0123a41>] worker_thread+0xab/0xb5
> > >  >  >  > Feb  7 09:19:47  [<c0125d5e>] autoremove_wake_function+0x0/0x2d
> > >  >  >  > Feb  7 09:19:47  [<c0125caa>] kthread+0x36/0x5c
> > >  >  >  > Feb  7 09:19:47  [<c0125c74>] kthread+0x0/0x5c
> > >  >  >  > Feb  7 09:19:47  [<c01047cb>] kernel_thread_helper+0x7/0x10
> > >  >  >  > Feb  7 09:19:47  =======================
> > >  >  >  > Feb  7 09:19:47  Code: ff b8 6c 47 39 c0 e8 64 f1 15 00 89 f0 83 c4 10
> > >  >  >  > 5b 5e 5f 5d c3 55 57 56 53 89 d3 83 ec 0c 8b 70 1c b8 6c 47 39 c0 e8
> > >  >  >  > 3a f1 15 00 <8b> 56 08 85 d2 75 04 0f 0b eb fe 8b 5b 1c b8 a0 47 39 c0
> > >  >  >  > 85 db
> > >  >  >  > Feb  7 09:19:47  EIP: [<c0183188>] sysfs_move_dir+0x16/0x1ab SS:ESP
> > >  >  >  > 0068:f6da9f30
> > >  >  >  > Feb  7 09:19:47  ---[ end trace e0c3df2b167f1367 ]---
> > >  >  >  > Feb  7 09:27:44  usb 4-1: new full speed USB device using uhci_hcd and address 4
> > >  >  >  > Feb  7 09:27:44  usb 4-1: configuration #1 chosen from 1 choice
> > >  >  >  > Feb  7 09:28:06  BUG: unable to handle kernel NULL pointer dereference
> > >  >  >  > at 00000020
> > >  >  >  > Feb  7 09:28:06  IP: [<c0182a99>] sysfs_addrm_start+0x1e/0x7a
> > >  >  >  > Feb  7 09:28:06  *pde = 00000000
> > >  >  >  > Feb  7 09:28:06  Oops: 0000 [#2] PREEMPT
> > >  >  >  > Feb  7 09:28:06  Modules linked in: xt_tcpudp hidp l2cap snd_seq
> > >  >  >  > snd_seq_device snd_pcm_oss snd_mixer_oss sr_mod cdrom iptable_filter
> > >  >  >  > iptable_nat nf_conntrack_ipv4 iptable_mangle ipt_LOG xt_state ipt_ttl
> > >  >  >  > ipt_MASQUERADE nf_nat   nf_conntrack xt_DSCP ip_tables x_tables usbhid
> > >  >  >  > ipw2200 ieee80211 ieee80211_crypt thinkpad_acpi backlight acpi_cpufreq
> > >  >  >  > radeon drm intel_agp agpgart snd_intel8x0 snd_ac97_codec ac97_bus
> > >  >  >  > snd_pcm snd_timer snd soundcore             snd_page_alloc button
> > >  >  >  > thermal processor hci_usb bluetooth
> > >  >  >  > Feb  7 09:28:06
> > >  >  >  > Feb  7 09:28:06  Pid: 11774, comm: hidd Tainted: G      D (2.6.24-git16 #1)
> > >  >  >  > Feb  7 09:28:06  EIP: 0060:[<c0182a99>] EFLAGS: 00010246 CPU: 0
> > >  >  >  > Feb  7 09:28:06  EIP is at sysfs_addrm_start+0x1e/0x7a
> > >  >  >  > Feb  7 09:28:06  EAX: c0394760 EBX: 00000000 ECX: 00000000 EDX: 00000000
> > >  >  >  > Feb  7 09:28:06  ESI: f3733cb4 EDI: f3733cc4 EBP: 00000000 ESP: f3733ca4
> > >  >  >  > Feb  7 09:28:06  DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068
> > >  >  >  > Feb  7 09:28:06  Process hidd (pid: 11774, ti=f3732000 task=f3673550
> > >  >  >  > task.ti=f3732000)
> > >  >  >  > Feb  7 09:28:06  Stack: f6c14680 f7f9d6ec fffffff4 c0182e80 00000000
> > >  >  >  > 00000000 00000000 00000000
> > >  >  >  > Feb  7 09:28:06  f6c14680 f6c14680 fffffffe f56d563c c0182ee1 f3733cdc
> > >  >  >  > c01c6daa f5fa4c48
> > >  >  >  > Feb  7 09:28:06  c01c6eb9 f6e660f0 00000000 f6c14680 f6e660f0 f56d563c
> > >  >  >  > c01c6fe9 f3733d30
> > >  >  >  > Feb  7 09:28:06  Call Trace:
> > >  >  >  > Feb  7 09:28:06  [<c0182e80>] create_dir+0x33/0x6b
> > >  >  >  > Feb  7 09:28:06  [<c0182ee1>] sysfs_create_dir+0x29/0x3b
> > >  >  >  > Feb  7 09:28:06  [<c01c6daa>] kobject_get+0xf/0x13
> > >  >  >  > Feb  7 09:28:06  [<c01c6eb9>] kobject_add_internal+0xab/0x144
> > >  >  >  > Feb  7 09:28:06  [<c01c6fe9>] kobject_add_varg+0x39/0x42
> > >  >  >  > Feb  7 09:28:06  [<c01c723c>] kobject_add+0x4a/0x4e
> > >  >  >  > Feb  7 09:28:06  [<c0219c62>] get_device_parent+0xd7/0xfb
> > >  >  >  > Feb  7 09:28:06  [<c021a2e1>] device_add+0x79/0x418
> > >  >  >  > Feb  7 09:28:06  [<c01ca789>] snprintf+0x1c/0x1f
> > >  >  >  > Feb  7 09:28:06  [<c026c0e3>] input_register_device+0xb2/0x188
> > >  >  >  > Feb  7 09:28:06  [<c027b9a7>] hidinput_connect+0x24ff/0x2530
> > >  >  >  > Feb  7 09:28:06  [<f895d726>] hidp_send_report+0x143/0x14f [hidp]
> > >  >  >  > Feb  7 09:28:06  [<f895e486>] hidp_sock_ioctl+0xe2/0x1fa [hidp]
> > >  >  >  > Feb  7 09:28:06  [<c0128259>] enqueue_hrtimer+0xd7/0xe2
> > >  >  >  > Feb  7 09:28:06  [<c011375e>] hrtick_set+0x6a/0xc3
> > >  >  >  > Feb  7 09:28:06  [<c0103948>] do_notify_resume+0x5e3/0x644
> > >  >  >  > Feb  7 09:28:06  [<c027f217>] sock_ioctl+0x1ab/0x1cd
> > >  >  >  > Feb  7 09:28:06  [<c027f06c>] sock_ioctl+0x0/0x1cd
> > >  >  >  > Feb  7 09:28:06  [<c015aaa4>] do_ioctl+0x1c/0x5d
> > >  >  >  > Feb  7 09:28:06  [<c015ad11>] vfs_ioctl+0x22c/0x23f
> > >  >  >  > Feb  7 09:28:06  [<c02808b3>] sys_socketcall+0xd2/0x181
> > >  >  >  > Feb  7 09:28:06  [<c015ad50>] sys_ioctl+0x2c/0x44
> > >  >  >  > Feb  7 09:28:06  [<c0103c3a>] sysenter_past_esp+0x5f/0x85
> > >  >  >  > Feb  7 09:28:06  [<c02e0000>] piix_init_one+0x1a7/0x525
> > >  >  >  > Feb  7 09:28:06  =======================
> > >  >  >  > Feb  7 09:28:06  Code: 89 f8 e8 3d ff ff ff 31 c0 5b 5e 5f c3 57 b9 04
> > >  >  >  > 00 00 00 56 89 c6 53 31 c0 89 d3 89 f7 f3 ab b8 60 47 39 c0 89 16 e8
> > >  >  >  > 29 f8 15 00 <8b> 53 20 b9 e3 27 18 c0 a1 fc 19 40 c0 53 e8 0c e0 fd ff
> > >  >  >  > 5b 85
> > >  >  >  > Feb  7 09:28:06  EIP: [<c0182a99>] sysfs_addrm_start+0x1e/0x7a SS:ESP
> > >  >  >  > 0068:f3733ca4
> > >  >  >  > Feb  7 09:28:06  ---[ end trace e0c3df2b167f1367 ]---
> > >  >  >  >
> > >  >  >  > # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> > >  >  >  >
> > >  >  >  > This does not happen in 2.6.22
> > >  >  >  >
> > >  >  >  > Please let me know if you need more info, or need me to report this elsewhere.
> > >  >  >
> > >  >  >
> > >  >  > Does 2.6.24 work?
> > >  >
> > >  >  Just had an oops w/ 2.6.24.2 and was about to send the attached to
> > >  >  lkml. Although it happens less frequently in 2.6.24.2 and I don't see
> > >  >  btdelconn in the single Oops I've had in 2.6.24.2
> > >  >
> > >  >
> > >  >  > How do you use bluetooth, just as hid devices?
> > >  >
> > >  >  Just one bluetooth mouse.
> > >  >
> > >  >
> > >  >  >  Could you post full dmesg?
> > >  >
> > >  >  I'll attach the plain text file will most of the output requested by
> > >  >
> > >  >  /usr/src/linux/REPORTING-BUGS
> > >  >
> > >  >  the outpu of DMESG from after booting to recover from the Oops is at the bottom.
> > >  >
> > >  >  >  Regards
> > >  >  >
> > >  >  > dave
> > >  >
> > >  >  Thank you!
> > >  >
> > >  >  Barnaby
> > >  >
> > >
> > >  Hi,
> > >
> > >  Please try the attached patch and help to verify.
> > >
> > >  Regards
> > >  dave
> > >
> >
> > Hi,
> >
> > Oops is still present, heres what I did..
>
> For your case could you please try another patch? Thanks.
> (Attached because I can not access my own linux pc.)
>
> Regards
> dave
>

Oops is no longer seen,

Kernel tested has both patches applied..


root@...anni-lnx:~# uname -a
Linux bdianni-lnx 2.6.24.2 #8 PREEMPT Fri Feb 15 23:50:59 EST 2008 i686
Intel(R) Pentium(R) M processor 2.13GHz GenuineIntel GNU/Linux

w/ diff1 doest NOT Oops

root@...anni-lnx:~#  echo enable > /proc/acpi/ibm/bluetooth

Feb 17 10:05:46 bdianni-lnx usb 4-1: USB disconnect, address 2

# no Oops here
# then

root@...anni-lnx:~#  echo enable > /proc/acpi/ibm/bluetooth

Feb 17 10:06:17 bdianni-lnx usb 4-1: new full speed USB device using
uhci_hcd and address 4
Feb 17 10:06:18 bdianni-lnx usb 4-1: configuration #1 chosen from 1
choice
Feb 17 10:06:27 bdianni-lnx input: Logitech Bluetooth Mouse as
/devices/pci0000:00/0000:00:1d.2/usb4/4-1/4-1:1.0/hci0/acl00076169DBC8/input/
  input8

Thank you,

Barnaby
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