[pygtk] idle_add and source_remove combination can cause freeze.

Dave Aitel dave at immunitysec.com
Fri Oct 14 21:55:46 WST 2005

Antoon Pardon wrote:
> On Fri, Oct 14, 2005 at 08:28:46AM -0400, Dave Aitel wrote:
>> Make sure you're not on debian using the 2.6 kernel - their threading 
>> library is totally hosed, and pyGTK and heavy threads does manage to 
>> freeze up or crash when using it. (As would any heavily threaded app I 
>> imagine)
> Switching back to the 2.4 kernel indeed seems to solve the problem.

if [ -f /etc/debian-release ] ; then
   export LD_ASSUME_KERNEL=2.4.1

./canvasguigtk2.py #<--or whatever your app is called

This script will "fix" your problem too, I hope. We think it fixes ours. 
:> I assume it tells libc to not use futex(). I wish the linux community 
would get on the ball and make a nice regression test for this bug so it 
never pops up again. Right now my test is "Does the CANVAS gui work?". 
Maybe your test script is better for that. :>


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