** Description changed: + [Impact] + + * NetworkManager depends on libnl (libnl-3-200 libnl-genl-3-200 + libnl-route-3-200) and when libnl is updated to proposed + 3.2.21-1ubuntu1 NM segfaults due to libnl exposing a bug in NM + validation packets. + + This affects the 0.98 release of NetworkManager and has already + been fixed in newer releases. + + * Backporting fixes from upstream release is required to prevent + NetworkManager from faulting which breaks networking on most + Desktop releases. + + * All patches applied are already accepted upstream and newer Ubuntu + releases are not affected. + + * Upgrading NetworkManager to 0.9.8.8-0ubuntu7.3 prior to updating + libnl-3.2.21-1ubuntu1 is required to prevent NetworkManager crashing. + + [Test Case] + + * Reproduce crash test: + 1. Download 14.04.03 Desktop iso, amd64 + 2. Launched in a VM, run from iso + 3. In terminal, enable proposed + 4. sudo apt-get install libnl-3-200 libnl-genl-3-200 libnl-route-3-200 + 5. sudo restart network-manager + # note the nm-applet disappears as NM has now crashed, no network + conn. + 6. dmesg to confirm network-manager crash + 7. sudo dpkg --install gir1.2-networkmanager-1.0_0.9.8.8-0ubuntu7.3_amd64.deb libnm-glib4_0.9.8.8-0ubuntu7.3_amd64.deb libnm-glib-vpn1_0.9.8.8-0ubuntu7.3_amd64.deb libnm-util2_0.9.8.8-0ubuntu7.3_amd64.deb network-manager_0.9.8.8-0ubuntu7.3_amd64.deb + 8. sudo start network-manager + # nm-applet reappears, network connectivity restored + + * Successful upgrade test: + 1. Download 14.04.03 Desktop iso, amd64 + 2. Launched in a VM, run from iso + 3. In a terminal, sudo dpkg --install gir1.2-networkmanager-1.0_0.9.8.8-0ubuntu7.3_amd64.deb libnm-glib4_0.9.8.8-0ubuntu7.3_amd64.deb libnm-glib-vpn1_0.9.8.8-0ubuntu7.3_amd64.deb libnm-util2_0.9.8.8-0ubuntu7.3_amd64.deb network-manager_0.9.8.8-0ubuntu7.3_amd64.deb + 4. sudo restart network-manager # NM still runs, no crash, net up + 5. enable trusty-proposed in /etc/apt/sources.list + 6. sudo apt-get update + 7. sudo apt-get install libnl-3-200 libnl-genl-3-200 libnl-route-3-200 + 8. sudo restart network-manager # NM still runs, no crash, net up. + + + [Regression Potential] + + * NetworkManager is a highly visible package, so testing NetworkManager + functionality is critical. The patch does address the crash specificly + introduced by the updated libnl SRU. + + * We need to ensure that users have installed this NetworkManager + update before installing libnl3 update (special phasing needed). + + [Original Description] Testing out proposed libnl-3 package[1] exposed a bug in NM 0.98. After installing updated libnl3 and restarting networkmanager, NM crashes with: /var/log/syslog shows: init: network-manager main process (1057) killed by SEGV signal init: network-manager main process ended, respawning init: network-manager main process (1065) killed by SEGV signal init: network-manager respawning too fast, stopped The bug has been fixed in upstream 0.98 with these patches: http://cgit.freedesktop.org/NetworkManager/NetworkManager/commit/?id=8e4576b9fdb5c888d20a13aa2cc198df790dba54 http://cgit.freedesktop.org/NetworkManager/NetworkManager/commit/?id=65981edb9f562c07e78815c98093da67c50bfdcf
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1539634 Title: network-manager crashes when using libnl-3-200-3.21.1-1ubuntu1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1539634/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
