Grumble. Kernel lockup in Intrepid.

[Dan Kegel]

Wonder why patchwatcher was down for 12 hours?  It
seems to have been a kernel problem.

This is on an Ubuntu 8.10 32 bit Core 2 Duo system
on a P5K Pro motherboard, with a PCI-E NVidia card.
I have the proprietary Nvidia drivers installed, so I can't
expect support from anybody, but I did want to at
least kvetch in public somewhere.

The build slave was unresponsive.  Upon rebooting,
I found the following in /var/log/messages:

Nov 15 18:07:05 slave2 kernel: [1146762.712500] Modules linked in: nfs
lockd nfs_acl sunrpc af_packet binfmt_misc rfcomm bridge stp bnep sco
l2cap bluetooth ppdev ipv6 acpi_cpufreq cpufreq_stats
cpufreq_userspace cpufreq_powersave cpufreq_conservative
cpufreq_ondemand freq_table sbs wmi sbshc video output container
pci_slot battery iptable_filter ip_tables x_tables ac sbp2 parport_pc
lp parport snd_hda_intel psmouse pcspkr serio_raw evdev snd_pcm_oss
snd_mixer_oss nvidia(P) snd_pcm i2c_core snd_seq_dummy iTCO_wdt
iTCO_vendor_support snd_seq_oss snd_seq_midi snd_rawmidi
snd_seq_midi_event snd_seq snd_timer snd_seq_device snd shpchp
soundcore button pci_hotplug snd_page_alloc intel_agp agpgart ext3 jbd
mbcache sr_mod cdrom sd_mod crc_t10dif sg pata_marvell pata_acpi
usbhid hid natsemi ata_generic ohci1394 ieee1394 ata_piix libata
scsi_mod dock sky2 ehci_hcd uhci_hcd usbcore thermal processor fan
fbcon tileblit font bitblit softcursor fuse
Nov 15 18:07:05 slave2 kernel: [1146762.712501]
Nov 15 18:07:05 slave2 kernel: [1146762.712501] Pid: 21048, comm: wrc
Tainted: P          (2.6.27-7-generic #1)
Nov 15 18:07:05 slave2 kernel: [1146762.712501] EIP: 0060:[<c0184320>]
EFLAGS: 00000286 CPU: 1
Nov 15 18:07:05 slave2 kernel: [1146762.712501] EIP is at
find_get_pages+0x70/0x110
Nov 15 18:07:05 slave2 kernel: [1146762.712501] EAX: ee96fa7c EBX:
c1d5ac50 ECX: e2333d38 EDX: 00000000
Nov 15 18:07:05 slave2 kernel: [1146762.712501] ESI: e2333d30 EDI:
e2333d38 EBP: e2333ce8 ESP: e2333cb8
Nov 15 18:07:05 slave2 kernel: [1146762.712501]  DS: 007b ES: 007b FS:
00d8 GS: 0033 SS: 0068
Nov 15 18:07:05 slave2 kernel: [1146762.712501] CR0: 8005003b CR2:
09c28000 CR3: 35009000 CR4: 00000690
Nov 15 18:07:05 slave2 kernel: [1146762.712501] DR0: 00000000 DR1:
00000000 DR2: 00000000 DR3: 00000000
Nov 15 18:07:05 slave2 kernel: [1146762.712501] DR6: ffff0ff0 DR7: 00000403
Nov 15 18:07:05 slave2 kernel: [1146762.712501]  [<c018d4d7>]
pagevec_lookup+0x27/0x40
Nov 15 18:07:05 slave2 kernel: [1146762.712501]  [<c018e2ac>]
truncate_inode_pages_range+0x8c/0x360
Nov 15 18:07:05 slave2 kernel: [1146762.712501]  [<f89e9c7f>] ?
do_get_write_access+0x2df/0x4b0 [jbd]
Nov 15 18:07:05 slave2 kernel: [1146762.712501]  [<f8a23174>] ?
ext3_get_group_desc+0x14/0xd0 [ext3]
Nov 15 18:07:05 slave2 kernel: [1146762.712501]  [<c018e59f>]
truncate_inode_pages+0x1f/0x30
Nov 15 18:07:05 slave2 kernel: [1146762.712501]  [<c0195d11>]
vmtruncate+0x161/0x190
Nov 15 18:07:05 slave2 kernel: [1146762.712501]  [<c01c85d2>]
inode_setattr+0x62/0x190
Nov 15 18:07:05 slave2 kernel: [1146762.712501]  [<f8a28ef9>]
ext3_setattr+0xd9/0x210 [ext3]
Nov 15 18:07:05 slave2 kernel: [1146762.712501]  [<c01c89d6>]
fnotify_change+0x2d6/0x3b0
Nov 15 18:07:05 slave2 kernel: [1146762.712501]  [<c01b9d81>] ?
path_permission+0x31/0x40
Nov 15 18:07:05 slave2 kernel: [1146762.712501]  [<c01b0f56>]
do_truncate+0x76/0xa0
Nov 15 18:07:05 slave2 kernel: [1146762.712501]  [<c023528f>] ?
apparmor_path_permission+0x5f/0x80
Nov 15 18:07:05 slave2 kernel: [1146762.712501]  [<c01ba6f3>]
may_open+0x193/0x210
Nov 15 18:07:05 slave2 kernel: [1146762.712501]  [<c01bda75>]
do_filp_open+0x115/0x790
Nov 15 18:07:05 slave2 kernel: [1146762.712501]  [<c01c9619>] ?
expand_files+0x9/0x60
Nov 15 18:07:05 slave2 kernel: [1146762.712501]  [<c01c9750>] ?
alloc_fd+0xe0/0x100
Nov 15 18:07:05 slave2 kernel: [1146762.712501]  [<c01afff5>]
do_sys_open+0x65/0x100
Nov 15 18:07:05 slave2 kernel: [1146762.712501]  [<c01b00fe>] sys_open+0x2e/0x40
Nov 15 18:07:05 slave2 kernel: [1146762.712501]  [<c0103f7b>]
sysenter_do_call+0x12/0x2f
Nov 15 18:07:05 slave2 kernel: [1146762.712501]  [<c0370000>] ?
default_device_exit+0x60/0xb0

It crashed in the middle of a wine build.
The last thing in the patchwatcher log was
make[1]: Leaving directory
`/home/patchslave/winezeug/patchwatcher/wine-continuous-workdir/active/dlls'
make[2]: Entering

BIOS reported the temperature was 56 degrees after rebooting, fwiw.

This is the first problem on this machine since I set it up several
weeks ago.

I guess I'll just reboot it and hope...