Bug 124410 - java hang on futex()
java hang on futex()
Status: CLOSED WONTFIX
Product: Red Hat Linux
Classification: Retired
Component: libc (Show other bugs)
9
i686 Linux
medium Severity high
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Assigned To: Jakub Jelinek
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Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2004-05-26 08:42 EDT by laurence duquesne
Modified: 2007-04-18 13:08 EDT (History)
0 users

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Doc Type: Bug Fix
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Last Closed: 2004-05-27 11:24:10 EDT
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Description laurence duquesne 2004-05-26 08:42:49 EDT
From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)

Description of problem:
Java Swing Application with specific threads using JNI fonctions 
hangs on os::Linux::safe_cond_wait  (result of gcc)

The Swing IHM is completely frozen and the system uses 100% of CPU
The kill -3 on JVM doesn't work.

But the strace reveals that there is a stuck with NPTL futex. 
This NPTL futex is in glibc library.
The strace result is  : 
futex(0x8053048, FUTEX_WAIT, 0, NULL)

Version of java Hotspot 1.4.2_03-b02



Version-Release number of selected component (if applicable):
glibc-2 .3.2-11.9 , kernel-2.4.20.8

How reproducible:
Sometimes

Steps to Reproduce:
1.Launch the Swing application
2.Refresh frequently java IHM by passing xterm window
3.wait and have luck
    

Additional info:
Comment 1 Jakub Jelinek 2004-05-27 11:24:10 EDT
Red Hat Linux 9 is no longer supported and there have been important
NPTL fixes since then.  If you manage to reproduce this with Fedora Core 2 or RHEL3 U2,
please reopen.

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