Bug 166033

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User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.8b) Gecko/20050125 Firefox/1.0+

Description of problem:
This problem has happened to me twice.

First time:

1. I was compiling the 2.6.12.4 kernel (still running the stock FC4 kernel).
2. Compiled finished and I was about to type make modules_install
3. This caused "segmentation fault" to be displayed.
4. I tried dmesg -> "segmentation fault"
5. I tried shutdown -h now -> "segmentation fault"
6. I tried several other commands. Same result. Not even possible to exit the shell cleanly.
7. I manually shut down the machine.
8. After power up Linux boots normally until it reaches the point of "Freeing unused kernel memory" where after printing this it freezes.
9. I boot to Mac OS X where everything is fine. No problems visible.

This time I was logged in as root.

Second time:

1. This time I managed to compile a 2.6.12.4 kernel and was running this.
The compiler I used was the stock GCC compiler that came with FC4 (4.0.1-7
maybe).
2. I extracted a CVS snapshot of X.org to try to see if this helps the problem with radeon not finding any screens (X is not possible to use).
3. I started the normal make World. However I interrupted the compile and shut the computer down.
4. When returning I started the machine again and let the compilation continue.
5. It finished without errors. 
6. I tried to enter a command (to install). This caused "segmentation fault".
7. I tried several other commands with the same result.
8. I manually shut down the computer and rebooted it.
9. After power up Linux boots normally until it reaches the point of "Freeing unused kernel memory" where after printing this it freezes.
10. I boot to Mac OS X where everything is fine. No problems visible.
11. I tried to let the computer "wait awhile" but same result when booting.

In both cases I booted into resuce mode on the CD and ran e2fck on the disk
and this returned without problems.

However upon trying to chroot /mnt/sysimage I always get "segmentation fault"
so I have not been able to verify the integrity of the RPM database.

It is possible to mount the partition and view all the files on it and the
ones I looked at seems okayish but it is hard to tell.



Version-Release number of selected component (if applicable):
Fedora Core 4 kernel, 2.6.12.4 kernel

How reproducible:
Sometimes

Steps to Reproduce:
1. Compile something large
2. Every command entered in prompt causes segmentation fault
3. Reboot
4. Freeze at "Freeing unused memory".
  

Actual Results:  1. There are segmentation faults for every command run at step two.
Not even possible to do a shutdown -h now

2. Freeze at "Freeing unused memory".

Expected Results:  1. No segmentation fault for every command run at step two.

2. No Freeze att "Freeing unused memory".

Additional info:

I have a Mac Mini 1.2 GHz with 512 MB RAM and 40 GB harddrive. Mac OS X and Fedora Core 4 is installed on the machine.