I also saw this in 2.6.22-rt9. When I disconnect a USB device the
whole USB system goes down and I'm not able to insert any other USB
device until I reboot.
This happens every time. I'm on a P4.
usb 1-1.3: USB disconnect, address 11
BUG: unable to handle kernel paging request at virtual address 00100100
printing eip:
c031c3d9
*pde = 00000000
stopped custom tracer.
Oops: 0000 [#1]
PREEMPT
Modules linked in: snd_seq_midi snd_rtctimer rtc radeon snd_hdsp snd_rawmidi
firmware_class snd_hwdep
CPU: 0
EIP: 0060:[<c031c3d9>] Not tainted VLI
EFLAGS: 00010206 (2.6.23-rt1 #1)
EIP is at evdev_disconnect+0x5b/0x96
eax: 00000000 ebx: 000ffcf0 ecx: 00000073 edx: c1e03450
esi: f7540000 edi: f754006c ebp: f7bb9800 esp: c1e07e84
ds: 007b es: 007b fs: 0000 gs: 0000 ss: 0068 preempt:00000001
Process khubd (pid: 82, ti=c1e06000 task=c1e03450 task.ti=c1e06000)
Stack: f7f1d400 f7ea4000 f7ea47f4 f7ea7000 c0319a64 00000000 f7ea6000 f7ea7000
f7bb9800 f6ac3b00 f7ea7c58 c032a139 f7ea601c f7ea6000 f7ea7000 c032d697
f7bb9800 f7bb981c c04afd40 f66f3858 c02fd799 f7bb981c c04afd88 00000000
Call Trace:
[<c0319a64>] input_unregister_device+0x67/0xfc
[<c032a139>] hidinput_disconnect+0x2e/0x47
[<c032d697>] hid_disconnect+0x76/0xce
[<c02fd799>] usb_unbind_interface+0x2d/0x6e
[<c02b7ba4>] __device_release_driver+0x71/0x8e
[<c02b7c65>] device_release_driver+0x18/0x21
[<c02b76f3>] bus_remove_device+0x70/0x80
[<c02b5ddf>] device_del+0x1bb/0x22f
[<c02fb4f1>] usb_disable_device+0x5c/0xbb
[<c02f807d>] usb_disconnect+0x7a/0xd3
[<c02f85a9>] hub_thread+0x30f/0x9ea
[<c010d79a>] update_stats_wait_end+0x9b/0xbe
[<c03c4c32>] __schedule+0x27e/0x36d
[<c01214e5>] autoremove_wake_function+0x0/0x35
[<c02f829a>] hub_thread+0x0/0x9ea
[<c012142e>] kthread+0x36/0x5c
[<c01213f8>] kthread+0x0/0x5c
[<c0102913>] kernel_thread_helper+0x7/0x10
=======================
Code: e8 3c c5 ff ff 8b 5e 64 eb 1b 8d 83 08 04 00 00 b9 06 00 02 00 ba 1d 00
00 00 e8 d7 fc e3 ff 8b 9b 10 04 00 00 81 eb 10 04 00 00 <8b> 83 10 04 00 00 0f
18 00 90 8d 93 10 04 00 00 8d 46 64 39 c2
EIP: [<c031c3d9>] evdev_disconnect+0x5b/0x96 SS:ESP 0068:c1e07e84
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