kernel panic after unplug usb bluetooth dongle

[Dave Young]

Hi,

Unplug usb bluetooth dongle make kernel panic as below. Thomas, any
idea about it?

usb 6-1: USB disconnect, device number 3
btusb_intr_complete: hci0 urb ffff8801275bb9c0 failed to resubmit (19)
btusb_bulk_complete: hci0 urb ffff8801275bb540 failed to resubmit (19)
btusb_bulk_complete: hci0 urb ffff8801275bb6c0 failed to resubmit (19)
btusb_send_frame: hci0 urb ffff8801275bb6c0 submission failed
BUG: unable to handle kernel NULL pointer dereference at           (null)
IP: [<ffffffff81048988>] get_next_timer_interrupt+0x13d/0x21d
PGD 12609c067 PUD 1260b5067 PMD 0
Oops: 0000 [#1] SMP
last sysfs file: /sys/devices/virtual/dmi/id/chassis_type
CPU 0
Modules linked in: tun rfcomm bnep snd_pcm_oss snd_mixer_oss kvm_intel
kvm btusb bluetooth snd_hda_codec_analog snd_hda_intel dell_wmi
sparse_keymap snd_hda_codec snd_hwdep e1000e snd_pcm wmi snd_timer
8139too rfkill snd_page_alloc

Pid: 0, comm: swapper Not tainted 2.6.39-rc5 #224 Dell Inc. OptiPlex
780                 /0V4W66
RIP: 0010:[<ffffffff81048988>]  [<ffffffff81048988>]
get_next_timer_interrupt+0x13d/0x21d
RSP: 0018:ffffffff817dddf8  EFLAGS: 00010097
RAX: 0000000000000000 RBX: ffffffff819adb80 RCX: 000000000000003e
RDX: 0000000000000000 RSI: 000000000000003e RDI: 0000000000000000
RBP: ffffffff817dde58 R08: ffffffff817dde08 R09: 00000000010000fe
R10: 0000000000000000 R11: 0000000000000001 R12: 000000010000fdf7
R13: ffffffff819aefb0 R14: ffffffff819aebd0 R15: 0000000000000040
FS:  0000000000000000(0000) GS:ffff880127c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000000 CR3: 000000012605a000 CR4: 00000000000406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process swapper (pid: 0, threadinfo ffffffff817dc000, task ffffffff81800020)
Stack:
 ffffffff817dde28 ffffffff8105c769 ffffffff819aebd0 ffffffff819aefd0
 ffffffff819af3d0 ffffffff819af7d0 ffffffff817dde48 000000000000ccc0
 ffff880127c0e2a0 00000000a983c6e8 0000000000000000 000000010000fdf7
Call Trace:
 [<ffffffff8105c769>] ? sched_clock_local+0x1c/0x80
 [<ffffffff810652c4>] tick_nohz_stop_sched_tick+0x370/0x390
 [<ffffffff81001e77>] cpu_idle+0x2f/0x9a
 [<ffffffff814fd409>] rest_init+0xad/0xb1
 [<ffffffff814fd35c>] ? csum_partial_copy_generic+0x16c/0x16c
 [<ffffffff818b0c49>] start_kernel+0x399/0x3a4
 [<ffffffff818b0140>] ? early_idt_handlers+0x140/0x140
 [<ffffffff818b02af>] x86_64_start_reservations+0xb6/0xba
 [<ffffffff818b03b3>] x86_64_start_kernel+0x100/0x10f
Code: 04 4a 8b 14 30 4d 8d 2c 06 eb 20 4c 89 d0 f6 42 18 01 75 11 48
8b 42 10 41 bb 01 00 00 00 4c 39 d0 49 0f 49 c2 48 89 fa 49 89 c2
 8b 3a 4c 39 ea 0f 18 0f 75 d5 45 85 db 74 10 85 f6 74 04 39
RIP  [<ffffffff81048988>] get_next_timer_interrupt+0x13d/0x21d
 RSP <ffffffff817dddf8>
CR2: 0000000000000000
---[ end trace 5621bb82abfeb30f ]---
Kernel panic - not syncing: Attempted to kill the idle task!
Pid: 0, comm: swapper Tainted: G      D     2.6.39-rc5 #224
Call Trace:
 [<ffffffff8151a544>] panic+0xb7/0x1c9
 [<ffffffff8103ef48>] do_exit+0xb6/0x7b3
 [<ffffffff8103bd25>] ? kmsg_dump+0x120/0x12f
 [<ffffffff8103bc96>] ? kmsg_dump+0x91/0x12f
 [<ffffffff8151e23f>] oops_end+0xc1/0xc9
 [<ffffffff810228c3>] no_context+0x1f3/0x202
 [<ffffffff81022a8d>] __bad_area_nosemaphore+0x1bb/0x1e1
 [<ffffffff810685c8>] ? mark_lock+0x22/0x261
 [<ffffffff8106a49c>] ? __lock_acquire+0xe05/0xe14
 [<ffffffff81022ac1>] bad_area_nosemaphore+0xe/0x10
 [<ffffffff815202a3>] do_page_fault+0x20b/0x421
 [<ffffffff8106a49c>] ? __lock_acquire+0xe05/0xe14
 [<ffffffff8106a49c>] ? __lock_acquire+0xe05/0xe14
 [<ffffffff8151d020>] ? _raw_spin_unlock_irq+0x2b/0x37
 [<ffffffff812816fd>] ? trace_hardirqs_off_thunk+0x3a/0x3c
 [<ffffffff8151d5e5>] page_fault+0x25/0x30
 [<ffffffff81048988>] ? get_next_timer_interrupt+0x13d/0x21d
 [<ffffffff81048894>] ? get_next_timer_interrupt+0x49/0x21d
 [<ffffffff8105c769>] ? sched_clock_local+0x1c/0x80
 [<ffffffff810652c4>] tick_nohz_stop_sched_tick+0x370/0x390
 [<ffffffff81001e77>] cpu_idle+0x2f/0x9a
 [<ffffffff814fd409>] rest_init+0xad/0xb1
 [<ffffffff814fd35c>] ? csum_partial_copy_generic+0x16c/0x16c
 [<ffffffff818b0c49>] start_kernel+0x399/0x3a4
 [<ffffffff818b0140>] ? early_idt_handlers+0x140/0x140
 [<ffffffff818b02af>] x86_64_start_reservations+0xb6/0xba
 [<ffffffff818b03b3>] x86_64_start_kernel+0x100/0x10f

-- 
Regards
dave
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