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Description of problem: AttributeError: 'NoneType' object has no attribute 'clear' Version-Release number of selected component (if applicable): virt-manager-1.4.3-3.el7.noarch How reproducible: 100% Steps to Reproduce: 1. Open virt-manager 2. Open a new 'Configure network interface' dialog. 3. keep interface type as Bridge, click 'Forward'. 4. Click 'Configure', then set IPv4 Mode to 'Static'. 5. Close the Ip configuration dialog, an Error validating IP configuration dialog will pop up. 6. Close the error dialog and 'Cancel' the configure network interface dialog. 7. Click '+' to open a new 'configure network interface' dialog. Actual results: Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/host.py", line 756, in add_interface self.addinterface.show(self.topwin) File "/usr/share/virt-manager/virtManager/createinterface.py", line 122, in show self.reset_state() File "/usr/share/virt-manager/virtManager/createinterface.py", line 363, in reset_state self.widget("ipv6-address-list").get_model().clear() AttributeError: 'NoneType' object has no attribute 'clear' Expected results: The new 'configure network interface' dialog should be launched successfully. Additional info:
Created attachment 1417240 [details] virt-manager debug log
I can reproduce this issue with package: virt-manager-1.4.3-3.el7.noarch Then try to verify this bug with new build: virt-manager-1.5.0-3.el7.noarch virt-install-1.5.0-3.el7.noarch libvirt-4.5.0-12.el7.x86_64 qemu-kvm-rhev-2.12.0-26.el7.x86_64 libvirt-python-4.5.0-1.el7.x86_64 1. Check the ip-config window can be closed even for incorrect configuration when creating new host network interface. 1.1 Open virt-manager. 1.2 Open a new 'Configure network interface' dialog. 1.3 Keep interface type as Bridge, click 'Forward'. 1.4 Click 'Configure', then set IPv4 Mode to 'Static'. 1.5 Click 'OK' to make it work. Result: An Error validating IP configuration dialog will pop up:'Error validating IP configuration:Please enter an IP address'. 1.6 Close the error dialog and click the close button 'X' in the upper right corner of the configure network interface dialog. Result: The dialog can not close and the Error as the result of step1.5 will pop up again until changing IPv4 Mode from static to dhcp or none configuration. 1.7 New 'configure network interface' dialog can open successfully. Results:Open host network interface successfully. The result of Step1.6 is confused.I can't close the incorrect configuration directly by click 'X'.
It's not ideal but it would require to refactor the code and since this was completely dropped from upstream and I would consider it as a corner case I don't think we should waste anymore time to improve it.
Thanks for you replication,so i move this bug from ON_QA to VERIFIED based on above testing.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2019:2232