[svlug] Kernel panic?

[Andrew Wilcox]

This is not a kernel panic. It is an OOPS because the page directory entry was set to NULL for the address it was attempting to r/w. 

A quick Web search found nothing; however I am mobile, and cannot search very well.  I suggest going to kerneloops.org which has a lot of infos about kernel oopses.

HTH,

Andrew Wilcox (sent from my mobile)
Software architect and Corgi evangelist
Wilcox Technologies

On 15 Dec 2010, at 11:42, Sanatan Rai <sanatan at gmail.com> wrote:

> 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.
> 
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