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Date: Wed, 27 Apr 2011 15:14:36 +0800 Message-ID: Subject: Re: kernel panic after unplug usb bluetooth dongle From: Dave Young To: Yong Zhang Cc: Bluettooth Linux , Linux Kernel Mailing List , Thomas Gleixner Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6218 Lines: 152 On Wed, Apr 27, 2011 at 3:14 PM, Yong Zhang wrote: > On Wed, Apr 27, 2011 at 3:11 PM, Dave Young wrote: >> On Wed, Apr 27, 2011 at 2:41 PM, Yong Zhang wrote: >>> On Wed, Apr 27, 2011 at 2:35 PM, Dave Young 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: [] 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 >>> >> >> Tried, did not see any new stuff in dmesg. > > So this means you still got the PANIC, but don't see any additional output? > Yes > Thanks, > Yong > >> >>> 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:[] [] >>>> 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: >>>> [] ? sched_clock_local+0x1c/0x80 >>>> [] tick_nohz_stop_sched_tick+0x370/0x390 >>>> [] cpu_idle+0x2f/0x9a >>>> [] rest_init+0xad/0xb1 >>>> [] ? csum_partial_copy_generic+0x16c/0x16c >>>> [] start_kernel+0x399/0x3a4 >>>> [] ? early_idt_handlers+0x140/0x140 >>>> [] x86_64_start_reservations+0xb6/0xba >>>> [] 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 [] get_next_timer_interrupt+0x13d/0x21d >>>> RSP >>>> 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: >>>> [] panic+0xb7/0x1c9 >>>> [] do_exit+0xb6/0x7b3 >>>> [] ? kmsg_dump+0x120/0x12f >>>> [] ? kmsg_dump+0x91/0x12f >>>> [] oops_end+0xc1/0xc9 >>>> [] no_context+0x1f3/0x202 >>>> [] __bad_area_nosemaphore+0x1bb/0x1e1 >>>> [] ? mark_lock+0x22/0x261 >>>> [] ? __lock_acquire+0xe05/0xe14 >>>> [] bad_area_nosemaphore+0xe/0x10 >>>> [] do_page_fault+0x20b/0x421 >>>> [] ? __lock_acquire+0xe05/0xe14 >>>> [] ? __lock_acquire+0xe05/0xe14 >>>> [] ? _raw_spin_unlock_irq+0x2b/0x37 >>>> [] ? trace_hardirqs_off_thunk+0x3a/0x3c >>>> [] page_fault+0x25/0x30 >>>> [] ? get_next_timer_interrupt+0x13d/0x21d >>>> [] ? get_next_timer_interrupt+0x49/0x21d >>>> [] ? sched_clock_local+0x1c/0x80 >>>> [] tick_nohz_stop_sched_tick+0x370/0x390 >>>> [] cpu_idle+0x2f/0x9a >>>> [] rest_init+0xad/0xb1 >>>> [] ? csum_partial_copy_generic+0x16c/0x16c >>>> [] start_kernel+0x399/0x3a4 >>>> [] ? early_idt_handlers+0x140/0x140 >>>> [] x86_64_start_reservations+0xb6/0xba >>>> [] 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@vger.kernel.org >>>> More majordomo info at http://vger.kernel.org/majordomo-info.html >>>> Please read the FAQ at http://www.tux.org/lkml/ >>>> >>> >>> >>> >>> -- >>> Only stand for myself >>> >> >> >> >> -- >> Regards >> dave >> > > > > -- > Only stand for myself > -- Regards dave -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/