Bug 623151

This issue has been proposed when we are only considering blocker
issues in the current Red Hat Enterprise Linux release.

** If you would still like this issue considered for the current
release, ask your support representative to file as a blocker on
your behalf. Otherwise ask that it be considered for the next
Red Hat Enterprise Linux release. **

For rhel, I want to address the two issues from original bug separately, so only the first traceback is relevant for this bug. The issue is:

Selecting [Cancel] in stage 2 network enablement dialog causes traceback

And this is the fix - should be safe and isolated:

diff --git a/iw/network_gui.py b/iw/network_gui.py
index ecd010b..4188cc5 100644
--- a/iw/network_gui.py
+++ b/iw/network_gui.py
@@ -185,7 +185,7 @@ def selectInstallNetDeviceDialog(network, devices = None):
     rc = dialog.run()
 
     if rc in [gtk.RESPONSE_CANCEL, gtk.RESPONSE_DELETE_EVENT]:
-        retval = None
+        install_device = None
     else:
         active = combo.get_active_iter()
         install_device = combo.get_model().get_value(active, 1)

Thanks Bill, should be fixed in anaconda-13.21.75-1.

Trying to reproduce this with the 0730.5 tree I did the following:

1) Start an install from http
2) After stage2 has started switch to tty2 and do
  - ifconfig eth0 down
  - rm /etc/sysconfig/network-scripts/ifcfg-eth0
3) Proceed with installation
4) Just before package selection anaconda pops up a dialog telling you that you have to activate networking and eth0 is preselected in this dialog.
5) Click Cancel on this dialog without trying to activate the network. The traceback below happens:

anaconda 13.21.66 exception report
Traceback (most recent call first):
  File "/usr/lib/anaconda/iw/network_gui.py", line 194, in selectInstallNetDeviceDialog
    return install_device
  File "/usr/lib/anaconda/gui.py", line 979, in enableNetwork
    nm_controlled_devices)
  File "/usr/lib/anaconda/yuminstall.py", line 1232, in doBackendSetup
    if not anaconda.intf.enableNetwork():
  File "/usr/lib/anaconda/backend.py", line 285, in doBackendSetup
    if anaconda.backend.doBackendSetup(anaconda) == DISPATCH_BACK:
  File "/usr/lib/anaconda/dispatch.py", line 208, in moveStep
    rc = stepFunc(self.anaconda)
  File "/usr/lib/anaconda/dispatch.py", line 126, in gotoNext
    self.moveStep()
  File "/usr/lib/anaconda/gui.py", line 1426, in setScreen
    self.anaconda.dispatch.gotoNext()
  File "/usr/lib/anaconda/gui.py", line 1339, in nextClicked
    self.setScreen ()
  File "/usr/lib/anaconda/gui.py", line 1476, in keyRelease
    self.nextClicked()
UnboundLocalError: local variable 'install_device' referenced before assignment

Just to clarify the traceback from comment #7 is the same as on the screenshot from the original bug report.

Now trying the same steps to reproduce with the 0818.0 tree I got the network activation dialog again. After clicking Cancel there's an error dialog:

Some of your repositories require networking, 
but there was an error enabling the network on your
system.

                 Exit Installer


Moving to VERIFIED.

Red Hat Enterprise Linux 6.0 is now available and should resolve
the problem described in this bug report. This report is therefore being closed
with a resolution of CURRENTRELEASE. You may reopen this bug report if the
solution does not work for you.