Bug 103591 - kernel panic on smp machine
kernel panic on smp machine
Product: Red Hat Linux
Classification: Retired
Component: kernel (Show other bugs)
i686 Linux
medium Severity high
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Assigned To: Arjan van de Ven
Brian Brock
Depends On:
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Reported: 2003-09-02 15:43 EDT by Dave Pierson
Modified: 2007-04-18 12:57 EDT (History)
1 user (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2003-10-27 15:57:14 EST
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RHEL 7.3 requirements from Atomic Host:
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Description Dave Pierson 2003-09-02 15:43:05 EDT
Description of problem:
During boot process using the smp kernel, the kernel panics.
Last few lines before panic

Code 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<0> Kernel panic: Attempted to kill the idle task!
In idle task - not syncing

Version-Release number of selected component (if applicable):
kernel 2.4.20-19.9smp
Or all of RedHat 9 kernel versions for smp

How reproducible:
100% on any computer using the MSI 694D Pro2 mainboard

Steps to Reproduce:
1. Boot computer
2. Select smp kernel in grub
3. Sit back and watch it panic
Actual results:

Expected results:

Additional info:
This computer has dual 1GHz Pentium 3 processors on the MSI 694D Pro2 mainboard.
It boots fine using the single cpu kernel.  RedHat 8 smp kernel ran fine on this
Comment 1 Dave Pierson 2003-10-27 15:41:55 EST
Fixed the problem.  For some smp machines running RH9 you need to change the bus
speed and cpu clock speed to know values in the bios.  For the above mainboards
the following settings must be made in the Frequency/Voltage Control part of the

"CPU Host Clock (CPU/PCI)" set to "133/33Mhz (Spd on)"
"CPU1 Clock Ratio" set to "x7.5"
"CPU2 Clock Ratio" set to "x7.5"

Then the smp kernel will load without any troubles.

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