On Sun, Mar 27 2005, Chris Rankin wrote:
> [gcc-3.4.3, Linux-2.6.11-SMP, Dual P4 Xeon with HT enabled]
>
> Hi,
>
> My Linux 2.6.11 box oopsed when I tried to logout. I have switched to using the anticipatory
> scheduler instead.
>
> Cheers,
> Chris
>
> NMI Watchdog detected LOCKUP on CPU1, eip c0275cc7, registers:
> Modules linked in: snd_pcm_oss snd_mixer_oss snd_usb_audio snd_usb_lib snd_intel8x0 snd_seq_oss
> snd_seq_midi snd_emu10k1_synth snd_emu10k1 snd_ac97_codec snd_pcm snd_page_alloc snd_emux_synth
> snd_seq_virmidi snd_rawmidi snd_seq_midi_event snd_seq_midi_emul snd_hwdep snd_util_mem snd_seq
> snd_seq_device snd_rtctimer snd_timer snd nls_iso8859_1 nls_cp437 vfat fat usb_storage radeon drm
> i2c_algo_bit emu10k1_gp gameport deflate zlib_deflate zlib_inflate twofish serpent aes_i586
> blowfish des sha256 crypto_null af_key binfmt_misc eeprom i2c_sensor button processor psmouse
> pcspkr p4_clockmod speedstep_lib usbserial lp nfsd exportfs md5 ipv6 sd_mod scsi_mod autofs nfs
> lockd sunrpc af_packet ohci_hcd parport_pc parport e1000 video1394 raw1394 i2c_i801 i2c_core
> ohci1394 ieee1394 ehci_hcd soundcore pwc videodev uhci_hcd usbcore intel_agp agpgart ide_cd cdrom
> ext3 jbd
> CPU: 1
> EIP: 0060:[<c0275cc7>] Not tainted VLI
> EFLAGS: 00200086 (2.6.11)
> EIP is at _spin_lock+0x7/0xf
> eax: f7b8b01c ebx: f7c82b88 ecx: f7c82b94 edx: f6c33714
> esi: eb68ad88 edi: f6c33708 ebp: f6c33714 esp: f5b32f70
> ds: 007b es: 007b ss: 0068
> Process nautilus (pid: 5757, threadinfo=f5b32000 task=f7518020)
> Stack: c01f7f79 00200282 f76bda24 f6c323e4 f7518020 00000000 00000000 c01f1d0c
> f5b32000 c011d7b3 00000001 00000000 b65ffa40 00000000 f5b32fac 00000000
> 00000000 00000000 f5b32000 c011d8d6 c0102e7f 00000000 b65ffbf0 b6640bf0
> Call Trace:
> [<c01f7f79>] cfq_exit_io_context+0x54/0xb3
> [<c01f1d0c>] exit_io_context+0x45/0x51
> [<c011d7b3>] do_exit+0x205/0x308
> [<c011d8d6>] next_thread+0x0/0xc
> [<c0102e7f>] syscall_call+0x7/0xb
> Code: 05 e8 3a e6 ff ff c3 ba 00 f0 ff ff 21 e2 81 42 14 00 01 00 00 f0 81 28 00 00 00 01 74 05 e8
> 1d e6 ff ff c3 f0 fe 08 79 09 f3 90 <80> 38 00 7e f9 eb f2 c3 f0 81 28 00 00 00 01 74 05 e8 ff e5
> ff
> console shuts up ...
The queue was gone by the time the process exited. What type of storage
do you have attached to the box? At least with SCSI, it has some
problems in this area - it will glady free the scsi device structure
(where the queue lock is located) while the queue reference count still
hasn't dropped to zero.
--
Jens Axboe
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