[svlug] Kernel panic?

[Sanatan Rai]

Hi,
   I see this in my logs:

Dec 15 16:00:03 fractal kernel: [333635.322172] *pde = 00000000
Dec 15 16:00:03 fractal kernel: [333635.322186] Modules linked in:
nls_utf8 cifs radeon ttm drm_kms_helper drm i2c_algo_bit appletalk
ppdev lp iptable_filter ip_tables x_tables nfsd lockd nfs_acl
auth_rpcgss sunrpc exportfs battery acpi_cpufreq cpufreq_powersave
cpufreq_userspace cpufreq_stats cpufreq_conservative fuse hwmon_vid
loop usbhid hid usb_storage snd_hda_codec_cmedia uhci_hcd
snd_hda_intel ide_cd_mod cdrom snd_hda_codec snd_hwdep snd_pcm_oss
snd_mixer_oss snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event
snd_seq snd_timer snd_seq_device firewire_ohci ehci_hcd snd floppy
parport_pc intel_agp firewire_core i2c_i801 psmouse pcspkr usbcore
via_rhine evdev serio_raw agpgart i2c_core piix mii soundcore parport
crc_itu_t nls_base processor button snd_page_alloc rng_core ext3 jbd
mbcache dm_mod sd_mod crc_t10dif ata_piix ide_pci_generic fan ide_core
ata_generic libata scsi_mod thermal thermal_sys
Dec 15 16:00:03 fractal kernel: [333635.322285]
Dec 15 16:00:03 fractal kernel: [333635.322291] Pid: 1369, comm: find
Not tainted (2.6.32-bpo.3-686 #1) MS-7091
Dec 15 16:00:03 fractal kernel: [333635.322295] EIP: 0060:[<c10dc258>]
EFLAGS: 00010286 CPU: 1
Dec 15 16:00:03 fractal kernel: [333635.322300] EIP is at
time_out_leases+0x33/0x45
Dec 15 16:00:03 fractal kernel: [333635.322303] EAX: dbb55e9c EBX:
80000000 ECX: c137f7dc EDX: 00000000
Dec 15 16:00:03 fractal kernel: [333635.322307] ESI: dbb55f44 EDI:
00000000 EBP: 00000000 ESP: dfd45e70
Dec 15 16:00:03 fractal kernel: [333635.322311]  DS: 007b ES: 007b FS:
00d8 GS: 00e0 SS: 0068
Dec 15 16:00:03 fractal kernel: [333635.322321]  dbb55e9c f6f96340
c10dd7bf c10ba0cf f57f0000 00098801 dbb55e9c f6fcaf00
Dec 15 16:00:03 fractal kernel: [333635.322331] <0> f6fcaf68 f6fcaf68
c10c49a7 00000024 dbb55e9c 00000024 dbb55e9c 00000024
Dec 15 16:00:03 fractal kernel: [333635.322342] <0> 00000024 dbb55e9c
00098801 00000000 f3873198 c10bb16e 00000103 dfd45f00
Dec 15 16:00:03 fractal kernel: [333635.322360]  [<c10dd7bf>] ?
__break_lease+0x97/0x321
Dec 15 16:00:03 fractal kernel: [333635.322366]  [<c10ba0cf>] ?
__link_path_walk+0x506/0x5c0
Dec 15 16:00:03 fractal kernel: [333635.322372]  [<c10c49a7>] ?
mntput_no_expire+0x17/0xb6
Dec 15 16:00:03 fractal kernel: [333635.322378]  [<c10bb16e>] ?
may_open+0xff/0x18f
Dec 15 16:00:03 fractal kernel: [333635.322383]  [<c10bb927>] ?
do_filp_open+0x3fa/0x7e0
Dec 15 16:00:03 fractal kernel: [333635.322389]  [<c10c35d1>] ?
alloc_fd+0x52/0xb7
Dec 15 16:00:03 fractal kernel: [333635.322395]  [<c10b1653>] ?
do_sys_open+0x4c/0xdf
Dec 15 16:00:03 fractal kernel: [333635.322400]  [<c10b172a>] ?
sys_open+0x1e/0x23
Dec 15 16:00:03 fractal kernel: [333635.322406]  [<c10030fb>] ?
sysenter_do_call+0x12/0x28
Dec 15 16:00:03 fractal kernel: [333635.322475] ---[ end trace
cb15280672cb82f8 ]---
Dec 15 16:00:22 fractal kernel: [333654.546444] [drm] Num pipes: 1
Dec 15 16:00:24 fractal kernel: [333656.680695] [drm] Setting GART
location based on new memory map
Dec 15 16:00:24 fractal kernel: [333656.681300] [drm] Loading R300 Microcode
Dec 15 16:00:24 fractal kernel: [333656.681309] platform radeon_cp.0:
firmware: requesting radeon/R300_cp.bin
Dec 15 16:00:25 fractal kernel: [333656.834907] [drm] Num pipes: 1
Dec 15 16:00:25 fractal kernel: [333656.834921] [drm] writeback test
succeeded in 1 usecs
Dec 15 16:00:36 fractal kernel: [333668.017081] [drm] Num pipes: 1
Dec 15 16:02:15 fractal shutdown[1996]: shutting down for system reboot


On seeing this I rebooted at (last message). It would seem that
something in the kernel segfaults, and dumps
the stack trace into the log.

Would anyone know what is going on?

How do I troubleshoot this?

Thanks!

--Sanatan
-- 
Sanatan Rai
3, Admirals Court,
30, Horselydown Lane,
London, SE1 2LJ.
+44-20-7403-2479.