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* [Bug general/4313] New: fcore on 'sleep' process doesn't work on x86_64
@ 2007-04-03 13:45 mark at klomp dot org
  2007-04-03 14:05 ` [Bug general/4313] " pmuldoon at redhat dot com
                   ` (5 more replies)
  0 siblings, 6 replies; 7+ messages in thread
From: mark at klomp dot org @ 2007-04-03 13:45 UTC (permalink / raw)
  To: frysk-bugzilla

As reported at https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=234879

The following fcore example doesn't work on x86_64:

sleep 1h & pid=$! ;sleep 1;fcore -o /tmp/sleep.core $pid

fcore (from CVS) takes a very long time (about 7 minutes) on the above example
and then generates the following stacktrace:

Exception in thread "main" inua.eio.BufferUnderflowException
   at inua.eio.ByteBuffer.get(fcore)
   at frysk.util.CoredumpAction$CoreMapsBuilder.buildMap(fcore)
   at frysk.sys.proc.MapsBuilder.construct(fcore)
   at frysk.sys.proc.MapsBuilder.construct(fcore)
   at frysk.util.CoredumpAction.write_elf_file(fcore)
   at frysk.util.CoredumpAction.allExistingTasksCompleted(fcore)
   at frysk.proc.ProcBlockAction.checkFinish(fcore)
   at frysk.proc.ProcBlockAction$ProcBlockTaskObserver$1.execute(fcore)
   at frysk.event.EventLoop.runEventLoop(fcore)
   at frysk.event.EventLoop.run(fcore)
   at fcore.main(fcore)


Comment #3 From Phil Muldoon (pmuldoon@redhat.com) 	on 2007-04-03 08:56 EST 
[reply] 	Private

Hi Mark,

Locally (from CVS) I cannot reproduce as I get:

[pmuldoon@localhost filesystems]$ sleep 1h & pid=$! ;sleep 1;fcore -o
/tmp/sleep.core $pid
[1] 8533
[pmuldoon@localhost filesystems]$ 

[pmuldoon@localhost filesystems]$ eu-readelf  -h /tmp/sleep.core.8533 
ELF Header:
  Magic:   7f 45 4c 46 01 01 01 00 00 00 00 00 00 00 00 00
  Class:                             ELF32
  Data:                              2's complement, little endian
  Ident Version:                     1 (current)
  OS/ABI:                            UNIX - System V
  ABI Version:                       0
  Type:                              CORE (Core file)

Additionally it completes in < 30 seconds. Is there access to your machine so I
can test?


Comment #4 From Mark Wielaard (mwielaard@redhat.com) 	on 2007-04-03 09:11 EST 
[reply] 	Private

(In reply to comment #3)
> Locally (from CVS) I cannot reproduce as I get:
> [...]
> [pmuldoon@localhost filesystems]$ eu-readelf  -h /tmp/sleep.core.8533 
> > [...]
> Additionally it completes in < 30 seconds. Is there access to your machine so I
> can test?

Cool! That looks promising. I am using a x86_64 machine for my tests (looks you
use something 32 bits based). I'll try to find you on irc.gimp.org in #frysk to
coordinate a debugging session.

Thanks,

Mark

-- 
           Summary: fcore on 'sleep' process doesn't work on x86_64
           Product: frysk
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: general
        AssignedTo: frysk-bugzilla at sourceware dot org
        ReportedBy: mark at klomp dot org


http://sourceware.org/bugzilla/show_bug.cgi?id=4313

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^ permalink raw reply	[flat|nested] 7+ messages in thread
end of thread, other threads:[~2007-07-23  9:48 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2007-04-03 13:45 [Bug general/4313] New: fcore on 'sleep' process doesn't work on x86_64 mark at klomp dot org
2007-04-03 14:05 ` [Bug general/4313] " pmuldoon at redhat dot com
2007-04-03 14:06 ` pmuldoon at redhat dot com
2007-04-03 14:24 ` mark at klomp dot org
2007-04-03 15:28 ` pmuldoon at redhat dot com
2007-04-04 15:06 ` mark at klomp dot org
2007-07-23  9:48 ` mark at klomp dot org

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