Bug 448628 - FUTEX_WAKE_BITSET and FUTEX_WAKE_BITSET incorrectly decoded
Product: Fedora
Classification: Fedora
Component: strace (Show other bugs)
All Linux
low Severity low
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Assigned To: Roland McGrath
Fedora Extras Quality Assurance
Depends On:
  Show dependency treegraph
Reported: 2008-05-27 18:30 EDT by Ulrich Drepper
Modified: 2010-01-07 10:26 EST (History)
1 user (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2010-01-07 10:26:09 EST
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RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)
Add support for the bitset operations, removing CMP_REQUEUE_PI (2.46 KB, patch)
2008-05-27 18:30 EDT, Ulrich Drepper
no flags Details | Diff
Same patch, but don't add printing of parameter for all other operations (2.16 KB, patch)
2008-05-27 19:01 EDT, Ulrich Drepper
no flags Details | Diff

  None (edit)
Description Ulrich Drepper 2008-05-27 18:30:34 EDT
Description of problem:
Somehow the handling of FUTEX_CMP_REQUEUE_PI crept into strace.  That operation
is not supported in the upstream kernel.  And worse: the opcode number is used
for something else.  The newer operations FUTEX_WAIT_BITSET and
FUTEX_WAKE_BITSET collide with the incorrect FUTEX_CMP_REQUEUE_PI handling.  I'm
attaching a patch to correct the problem.

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

How reproducible:

Steps to Reproduce:
1.run code using FUTEX_WAIT_BITSET under strace
Actual results:
shown as FUTEX_CMP_REQUEUE_PI operations

Expected results:
shown as FUTEX_WAIT_BITSET operation

Additional info:
Comment 1 Ulrich Drepper 2008-05-27 18:30:34 EDT
Created attachment 306847 [details]
Add support for the bitset operations, removing CMP_REQUEUE_PI
Comment 2 Ulrich Drepper 2008-05-27 19:01:01 EDT
Created attachment 306851 [details]
Same patch, but don't add printing of parameter for all other operations

Little extra change slipped into the last patch.
Comment 3 Denys Vlasenko 2009-01-14 09:03:09 EST
Patch seems to be in upstream strace cvs already.
Comment 4 Bug Zapper 2009-06-09 21:14:56 EDT
This message is a reminder that Fedora 9 is nearing its end of life.
Approximately 30 (thirty) days from now Fedora will stop maintaining
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bug reports from releases that are no longer maintained.  At that time
this bug will be closed as WONTFIX if it remains open with a Fedora 
'version' of '9'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version prior to Fedora 9's end of life.

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we may not be able to fix it before Fedora 9 is end of life.  If you 
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Comment 5 Ulrich Drepper 2009-06-09 22:21:52 EDT
The strace in F11 is not updated.
Comment 6 Andreas Schwab 2009-10-22 09:06:23 EDT
Fixed in 4.5.19-1.
Comment 7 Bug Zapper 2009-11-16 03:06:56 EST
This bug appears to have been reported against 'rawhide' during the Fedora 12 development cycle.
Changing version to '12'.

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