Bug 2285

Summary:	Adding an observer for the frysk app hangs the application
Product:	frysk	Reporter:	Andrew Cagney <cagney>
Component:	general	Assignee:	Phil Muldoon <pmuldoon>
Status:	RESOLVED FIXED
Severity:	normal
Priority:	P1
Version:	unspecified
Target Milestone:	---
Host:		Target:
Build:		Last reconfirmed:
Bug Depends on:
Bug Blocks:	1582, 2004

Description Andrew Cagney 2006-02-06 20:46:55 UTC

From: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=179874

Description of problem:

Of course you shouldn't do this, but if you try to add an observer to frysk, it
hangs.  I get this on the terminal:

click : frysk.gui.monitor.ProcData@4e0f110
Exception in thread "Thread-2" ptrace.attach: Operation not permitted (process 6707)
   at java.lang.Exception.Exception() (/usr/lib/libgcj.so.6.0.0)
   at java.lang.RuntimeException.RuntimeException() (/usr/lib/libgcj.so.6.0.0)
   at java.lang.Thread.run() (/usr/lib/libgcj.so.6.0.0)


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

frysk-0.0.1.2005.12.14.15.12-0.EL4.3

How reproducible:
100%

Steps to Reproduce:
1.  Install frsyk
2.  as a user, sudo frysk
3.  add any observer for the frysk process
  
Actual results:
frysk hangs

Expected results:
the observer is not added, but the app continues to run (maybe displays a warning?)

Additional info:

Comment 1 Phil Muldoon 2006-02-21 21:36:41 UTC

This may have been fixed in the RHEL4-U3 update (and therefore in head). There
was an error in the way we were associating parents in the treeview. Can you
retest and report?

Comment 2 Phil Muldoon 2006-11-28 15:11:24 UTC

In addition, the user is now not allowed to attach to the *same* frysk process
that the user is interacting with, but only other ancillary and incidental frysk
processes running on the system. Closing, as OP did not reply, and this bug has
been not been seen, and potentially cannot happen with the code changes past OP
report.