Bug 241795 - Bad numactl command hangs the system
Bad numactl command hangs the system
Status: CLOSED DUPLICATE of bug 229084
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kernel (Show other bugs)
5.0
ia64 Linux
medium Severity high
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Assigned To: Red Hat Kernel Manager
Martin Jenner
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Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2007-05-30 14:16 EDT by Nick Dokos
Modified: 2007-11-30 17:07 EST (History)
1 user (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Last Closed: 2007-06-08 12:13:28 EDT
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RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)
Console output (7.93 KB, text/plain)
2007-05-30 14:16 EDT, Nick Dokos
no flags Details

  None (edit)
Description Nick Dokos 2007-05-30 14:16:13 EDT
Description of problem:
Executing a command like this: numactl --cpubind <N> --membind <N> <command> on
an interleaved system produces the attached register dump and the system hangs:
you can ping it but that's about it.

Version-Release number of selected component (if applicable):
kernel 2.6.18-1.1

How reproducible:
Always.

Steps to Reproduce:
1. On an interleaved IA64 system (I used an rx8640, but I have no
reason to believe it's any different on an rx8620 or a Superdome),
say
     numactl --cpubind 0 --membind 0 ls


2. 
3.
  
Actual results:
System hangs.
See attachment for console output.

Expected results:
Command should return an error.

Additional info:
Lee Schermerhorn tried a 2.6.22-rc2-mm1 kernel on the same machine - it behaves
properly: the command returns an error as it should and nothing bad happens.
Comment 1 Nick Dokos 2007-05-30 14:16:13 EDT
Created attachment 155719 [details]
Console output
Comment 2 Doug Chapman 2007-05-30 14:55:48 EDT
Nick,

Was it just the kernel that was different between what you tried and what worked
for Lee or was it a different version of the numactl cmd line util also?

- Doug
Comment 3 Nick Dokos 2007-05-30 15:39:27 EDT
Doug, it was just the kernel. Everything else stayed the same.
Comment 4 Doug Chapman 2007-06-08 12:13:28 EDT
I have verified that this is already fixed in the latest RHEL5.1 kernels. 
Appears to be a dup of 229084.


*** This bug has been marked as a duplicate of 229084 ***

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