This is with Feisty not in Gusty like Donal (Bug reporter).
After a few Oops I got that:
Dec 19 06:09:02 mars kernel: [ 39.710293] BUG: soft lockup detected on CPU#2!
Dec 19 06:09:02 mars kernel: [ 39.710315] [softlockup_tick+156/240]
softlockup_tick+0x9c/0xf0
Dec 19 06:09:02 mars kernel: [ 39.710333] [pdflush+0/512] pdflush+0x0/0x200
Dec 19 06:09:02 mars kernel: [ 39.710338] [update_process_times+51/128]
update_process_times+0x33/0x80
Dec 19 06:09:02 mars kernel: [ 39.710349] [smp_apic_timer_interrupt+112/128]
smp_apic_timer_interrupt+0x70/0x80
Dec 19 06:09:02 mars kernel: [ 39.710358] [apic_timer_interrupt+40/48]
apic_timer_interrupt+0x28/0x30
Dec 19 06:09:02 mars kernel: [ 39.710369] [pdflush+0/512] pdflush+0x0/0x200
Dec 19 06:09:02 mars kernel: [ 39.710380] [_spin_lock+7/16]
_spin_lock+0x7/0x10
Dec 19 06:09:02 mars kernel: [ 39.710390] [sync_supers+12/192]
sync_supers+0xc/0xc0
Dec 19 06:09:02 mars kernel: [ 39.710398] [wb_kupdate+36/240]
wb_kupdate+0x24/0xf0
Dec 19 06:09:02 mars kernel: [ 39.710412] [pdflush+294/512]
pdflush+0x126/0x200
Dec 19 06:09:02 mars kernel: [ 39.710421] [wb_kupdate+0/240]
wb_kupdate+0x0/0xf0
Dec 19 06:09:02 mars kernel: [ 39.710431] [kthread+186/240] kthread+0xba/0xf0
Dec 19 06:09:02 mars kernel: [ 39.710439] [kthread+0/240] kthread+0x0/0xf0
Dec 19 06:09:02 mars kernel: [ 39.710447] [kernel_thread_helper+7/16]
kernel_thread_helper+0x7/0x10
Dec 19 06:09:02 mars kernel: [ 39.710457] =======================
Dec 19 06:09:03 mars kernel: [ 40.714061] BUG: soft lockup detected on CPU#0!
Dec 19 06:09:03 mars kernel: [ 40.714082] [softlockup_tick+156/240]
softlockup_tick+0x9c/0xf0
Dec 19 06:09:03 mars kernel: [ 40.714100] [update_process_times+51/128]
update_process_times+0x33/0x80
Dec 19 06:09:03 mars kernel: [ 40.714112] [smp_apic_timer_interrupt+112/128]
smp_apic_timer_interrupt+0x70/0x80
Dec 19 06:09:03 mars kernel: [ 40.714122] [apic_timer_interrupt+40/48]
apic_timer_interrupt+0x28/0x30
Dec 19 06:09:03 mars kernel: [ 40.714134] [_spin_lock+10/16]
_spin_lock+0xa/0x10
Dec 19 06:09:03 mars kernel: [ 40.714141] [get_super+25/176]
get_super+0x19/0xb0
Dec 19 06:09:03 mars kernel: [ 40.714149] [__invalidate_device+23/80]
__invalidate_device+0x17/0x50
Dec 19 06:09:03 mars kernel: [ 40.714157] [check_disk_change+55/128]
check_disk_change+0x37/0x80
Dec 19 06:09:03 mars kernel: [ 40.714159] [class_device_get+14/32]
class_device_get+0xe/0x20
Dec 19 06:09:03 mars kernel: [ 40.714169] [<f891463f>] sd_open+0xaf/0x150
[sd_mod]
Dec 19 06:09:03 mars kernel: [ 40.714175] [exact_match+0/16]
exact_match+0x0/0x10
Dec 19 06:09:03 mars kernel: [ 40.714181] [blkdev_open+0/112]
blkdev_open+0x0/0x70
Dec 19 06:09:03 mars kernel: [ 40.714185] [do_open+123/656]
do_open+0x7b/0x290
Dec 19 06:09:03 mars kernel: [ 40.714195] [blkdev_open+0/112]
blkdev_open+0x0/0x70
Dec 19 06:09:03 mars kernel: [ 40.714199] [blkdev_open+48/112]
blkdev_open+0x30/0x70
Dec 19 06:09:03 mars kernel: [ 40.714205] [__dentry_open+186/448]
__dentry_open+0xba/0x1c0
Dec 19 06:09:03 mars kernel: [ 40.714215] [nameidata_to_filp+53/64]
nameidata_to_filp+0x35/0x40
Dec 19 06:09:03 mars kernel: [ 40.714222] [do_filp_open+80/96]
do_filp_open+0x50/0x60
Dec 19 06:09:03 mars kernel: [ 40.714235] [do_sys_open+78/240]
do_sys_open+0x4e/0xf0
Dec 19 06:09:03 mars kernel: [ 40.714243] [sys_open+28/32] sys_open+0x1c/0x20
Dec 19 06:09:03 mars kernel: [ 40.714248] [sysenter_past_esp+105/169]
sysenter_past_esp+0x69/0xa9
Dec 19 06:09:03 mars kernel: [ 40.714260] =======================
** Changed in: linux-source-2.6.20 (Ubuntu)
Sourcepackagename: None => linux-source-2.6.20
** Also affects: linux-source-2.6.22 (Ubuntu)
Importance: Undecided
Status: New
--
Mounting NFS Shares Causes System Freeze After Kernel Update
https://bugs.launchpad.net/bugs/177439
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