[Bug 579240] [NEW] BUG: soft lockup - CPU#0 stuck for 61s!

Wed May 12 15:10:33 UTC 2010

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I ran programs in ubuntu 9.04.
The machine has 4  cores which frequency is 1Ghz.
The memory size is 4Gbyte.

I ran 4 programs and then the message appeared.

[ 2192.584002] BUG: soft lockup - CPU#0 stuck for 61s! [pdflush:47]
[ 2226.941502] BUG: soft lockup - CPU#3 stuck for 61s! [hald-addon-acpi:2246]
[ 2229.089002] BUG: soft lockup - CPU#2 stuck for 61s! [console-kit-dae:2124]
[ 2258.080021] BUG: soft lockup - CPU#0 stuck for 61s! [pdflush:47]

I wander the meaning of [ 2258.080021].
And what is soft lockup?? Is it lock the core hold??
Lastly, in 61s! , s means second??

And is there any method to avoid this problems?

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete

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BUG: soft lockup - CPU#0 stuck for 61s!
https://bugs.edge.launchpad.net/bugs/579240
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