From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <frysk-bugzilla-return-1739-listarch-frysk-bugzilla=sourceware.org@sourceware.org>
Received: (qmail 23942 invoked by alias); 3 Apr 2007 13:45:43 -0000
Received: (qmail 23909 invoked by uid 48); 3 Apr 2007 13:45:28 -0000
Date: Tue, 03 Apr 2007 13:45:00 -0000
From: "mark at klomp dot org" <sourceware-bugzilla@sourceware.org>
To: frysk-bugzilla@sourceware.org
Message-ID: <20070403144528.4313.mark@klomp.org>
Reply-To: sourceware-bugzilla@sourceware.org
Subject: [Bug general/4313] New: fcore on 'sleep' process doesn't work on x86_64
X-Bugzilla-Reason: AssignedTo
Mailing-List: contact frysk-bugzilla-help@sourceware.org; run by ezmlm
Precedence: bulk
List-Subscribe: <mailto:frysk-bugzilla-subscribe@sourceware.org>
List-Post: <mailto:frysk-bugzilla@sourceware.org>
List-Help: <mailto:frysk-bugzilla-help@sourceware.org>, <http://sourceware.org/lists.html#faqs>
Sender: frysk-bugzilla-owner@sourceware.org
X-SW-Source: 2007-q2/txt/msg00011.txt.bz2
List-Id: <frysk-bugzilla.sourceware.org>

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

------- You are receiving this mail because: -------
You are the assignee for the bug, or are watching the assignee.