double fault and kernel crash running pcgamess
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| linux-source-2.6.15 (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
Bug Description
Starting two instances of a program called pcgamess causes bad things to happen on a dapper SMP kernel.
I receive this error message:
[43342099.730000] double fault, gdt at dffdd000 [255 bytes]
Another message is logged also logged about a soft error on the CPU and is usually followed by a kernel dump.
A tarball of the binaries that do this can be retrieved here:
http://
Run the crashme.sh script.
With the sleep between starting processes, it might not crash the machine, but the double fault should happen.
If the sleep is removed the system immediately crashes in all of my testing.
I've tested this on an SMP Redhat Enterprise 4 machine and it doesn't crash the system, but I do get errors like this:
p4_error: OOPS: semop lock failed
So maybe there is some problems with IPC?
| xtknight (xt-knight) wrote | #1 |
| seisen1 (seisen-deactivatedaccount-deactivatedaccount) wrote | #2 |
| Andy Wettstein (ajw-uiuc) wrote | #3 |
| seisen1 (seisen-deactivatedaccount-deactivatedaccount) wrote | #4 |
| Changed in linux-source-2.6.15: | |
| status: | New → Invalid |
Nothing much seems to happen on Feisty SMP except 100% CPU (expected, I assume).