On Wed, Apr 27, 2011 at 2:35 PM, Dave Young <hidave.darkstar@xxxxxxxxx> wrote: > 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 Seems a hrtimer is freed abnormaly. Could you try to build your kernel with CONFIG_DEBUG_OBJECTS_TIMERS=y Thanks, Yong > 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>] Â[<ffffffff81048988>] > get_next_timer_interrupt+0x13d/0x21d > RSP: 0018:ffffffff817dddf8 ÂEFLAGS: 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: Â0000000000000000(0000) GS:ffff880127c00000(0000) knlGS:0000000000000000 > CS: Â0010 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: > Âffffffff817dde28 ffffffff8105c769 ffffffff819aebd0 ffffffff819aefd0 > Âffffffff819af3d0 ffffffff819af7d0 ffffffff817dde48 000000000000ccc0 > Âffff880127c0e2a0 00000000a983c6e8 0000000000000000 000000010000fdf7 > Call Trace: > Â[<ffffffff8105c769>] ? sched_clock_local+0x1c/0x80 > Â[<ffffffff810652c4>] tick_nohz_stop_sched_tick+0x370/0x390 > Â[<ffffffff81001e77>] cpu_idle+0x2f/0x9a > Â[<ffffffff814fd409>] rest_init+0xad/0xb1 > Â[<ffffffff814fd35c>] ? csum_partial_copy_generic+0x16c/0x16c > Â[<ffffffff818b0c49>] start_kernel+0x399/0x3a4 > Â[<ffffffff818b0140>] ? early_idt_handlers+0x140/0x140 > Â[<ffffffff818b02af>] x86_64_start_reservations+0xb6/0xba > Â[<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 > Â8b 3a 4c 39 ea 0f 18 0f 75 d5 45 85 db 74 10 85 f6 74 04 39 > RIP Â[<ffffffff81048988>] get_next_timer_interrupt+0x13d/0x21d > ÂRSP <ffffffff817dddf8> > CR2: 0000000000000000 > ---[ end trace 5621bb82abfeb30f ]--- > Kernel panic - not syncing: Attempted to kill the idle task! > Pid: 0, comm: swapper Tainted: G   ÂD   2.6.39-rc5 #224 > Call Trace: > Â[<ffffffff8151a544>] panic+0xb7/0x1c9 > Â[<ffffffff8103ef48>] do_exit+0xb6/0x7b3 > Â[<ffffffff8103bd25>] ? kmsg_dump+0x120/0x12f > Â[<ffffffff8103bc96>] ? kmsg_dump+0x91/0x12f > Â[<ffffffff8151e23f>] oops_end+0xc1/0xc9 > Â[<ffffffff810228c3>] no_context+0x1f3/0x202 > Â[<ffffffff81022a8d>] __bad_area_nosemaphore+0x1bb/0x1e1 > Â[<ffffffff810685c8>] ? mark_lock+0x22/0x261 > Â[<ffffffff8106a49c>] ? __lock_acquire+0xe05/0xe14 > Â[<ffffffff81022ac1>] bad_area_nosemaphore+0xe/0x10 > Â[<ffffffff815202a3>] do_page_fault+0x20b/0x421 > Â[<ffffffff8106a49c>] ? __lock_acquire+0xe05/0xe14 > Â[<ffffffff8106a49c>] ? __lock_acquire+0xe05/0xe14 > Â[<ffffffff8151d020>] ? _raw_spin_unlock_irq+0x2b/0x37 > Â[<ffffffff812816fd>] ? trace_hardirqs_off_thunk+0x3a/0x3c > Â[<ffffffff8151d5e5>] page_fault+0x25/0x30 > Â[<ffffffff81048988>] ? get_next_timer_interrupt+0x13d/0x21d > Â[<ffffffff81048894>] ? get_next_timer_interrupt+0x49/0x21d > Â[<ffffffff8105c769>] ? sched_clock_local+0x1c/0x80 > Â[<ffffffff810652c4>] tick_nohz_stop_sched_tick+0x370/0x390 > Â[<ffffffff81001e77>] cpu_idle+0x2f/0x9a > Â[<ffffffff814fd409>] rest_init+0xad/0xb1 > Â[<ffffffff814fd35c>] ? csum_partial_copy_generic+0x16c/0x16c > Â[<ffffffff818b0c49>] start_kernel+0x399/0x3a4 > Â[<ffffffff818b0140>] ? early_idt_handlers+0x140/0x140 > Â[<ffffffff818b02af>] x86_64_start_reservations+0xb6/0xba > Â[<ffffffff818b03b3>] x86_64_start_kernel+0x100/0x10f > > -- > Regards > dave > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at Âhttp://vger.kernel.org/majordomo-info.html > Please read the FAQ at Âhttp://www.tux.org/lkml/ > -- Only stand for myself -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
