Hi USB developers!
My laptop just showed me the following:
usb 2-2: USB disconnect, address 2
BUG: atomic counter underflow at:
[<c01c1d6d>] kref_put+0x48/0x8b
[<c02f87db>] klist_release+0x0/0x4d
[<c02f886d>] klist_remove+0x14/0x30
[<c0228e8a>] __device_release_driver+0x38/0x5b
[<c0228ec3>] device_release_driver+0x16/0x24
[<c02288b5>] bus_remove_device+0x4c/0x5a
[<c0227c8d>] device_del+0x28/0x55
[<c0227cc2>] device_unregister+0x8/0x10
[<e08e711a>] hub_port_connect_change+0x51/0x3cc [usbcore]
[<e08e4f8c>] clear_port_feature+0x48/0x4d [usbcore]
[<e08e772c>] hub_events+0x297/0x400 [usbcore]
[<e08e7895>] hub_thread+0x0/0xe1 [usbcore]
[<e08e78a9>] hub_thread+0x14/0xe1 [usbcore]
[<c012d99a>] autoremove_wake_function+0x0/0x37
[<c012d5bb>] kthread+0x87/0x8b
[<c012d534>] kthread+0x0/0x8b
[<c010131d>] kernel_thread_helper+0x5/0xb
Unable to handle kernel NULL pointer dereference at virtual address 00000000
printing eip:
c02f90eb
*pde = 00000000
Oops: 0002 [#1]
PREEMPT
last sysfs file: /devices/system/cpu/cpu0/cpufreq/scaling_cur_freq
Modules linked in: radeon drm vmnet vmmon arc4 ieee80211_crypt_wep crc32
binfmt_misc autofs4 joydev sd_mod ehci_hcd ohci1394 ieee1394 yenta_socket
rsrc_nonstatic pcmcia_core snd_intel8x0m snd_intel8x0 snd_ac97_codec
snd_ac97_bus usb_storage uhci_hcd evdev usbcore acerhk intel_agp agpgart b44
hostap_pci hostap ieee80211_crypt
CPU: 0
EIP: 0060:[<c02f90eb>] Tainted: P VLI
EFLAGS: 00010046 (2.6.13-rc6-mm2)
EIP is at wait_for_completion+0x69/0xf7
eax: df558c9c ebx: df558cc4 ecx: dfc72000 edx: 00000000
esi: df558c98 edi: dfc73ee4 ebp: dfc73ef8 esp: dfc73ed8
ds: 007b es: 007b ss: 0068
Process khubd (pid: 1195, threadinfo=dfc72000 task=dfd45a10)
Stack: 00000001 dfd45a10 c011747e df558c9c 00000000 df558cc4 df558c64 e08fbce0
00000002 c0228e8a df558c64 df76d864 deeec780 c0228ec3 df558c64 c02288b5
df558c64 c0227c8d df558c64 00000101 c0227cc2 00000003 e08e711a 80000100
Call Trace:
[<c011747e>] default_wake_function+0x0/0xc
[<c0228e8a>] __device_release_driver+0x38/0x5b
[<c0228ec3>] device_release_driver+0x16/0x24
[<c02288b5>] bus_remove_device+0x4c/0x5a
[<c0227c8d>] device_del+0x28/0x55
[<c0227cc2>] device_unregister+0x8/0x10
[<e08e711a>] hub_port_connect_change+0x51/0x3cc [usbcore]
[<e08e4f8c>] clear_port_feature+0x48/0x4d [usbcore]
[<e08e772c>] hub_events+0x297/0x400 [usbcore]
[<e08e7895>] hub_thread+0x0/0xe1 [usbcore]
[<e08e78a9>] hub_thread+0x14/0xe1 [usbcore]
[<c012d99a>] autoremove_wake_function+0x0/0x37
[<c012d5bb>] kthread+0x87/0x8b
[<c012d534>] kthread+0x0/0x8b
[<c010131d>] kernel_thread_helper+0x5/0xb
Code: 45 f0 00 00 00 00 8b 01 89 45 e4 c7 45 e8 7e 74 11 c0 c7 45 e0 01 00 00 00
8d 46 04 8b 50 04 8d 7d ec 89 78 04 89 45 ec 89 55 f0 <89> 3a 89 cb 8b 03 c7 00
02 00 00 00 fb 83 6b 14 01 8b 43 08 a8
<3>BUG: khubd[1195] exited with nonzero preempt_count 1!
Best wishes
Norbert
-------------------------------------------------------------------------------
Dr. Norbert Preining <preining AT logic DOT at> Università di Siena
sip:[EMAIL PROTECTED] +43 (0) 59966-690018
gpg DSA: 0x09C5B094 fp: 14DF 2E6C 0307 BE6D AD76 A9C0 D2BF 4AA3 09C5 B094
-------------------------------------------------------------------------------
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