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-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1929122 Title: networkd crashes when advertising blackhole route thru BGP Status in systemd package in Ubuntu: Fix Released Status in systemd source package in Bionic: Invalid Status in systemd source package in Focal: Fix Committed Bug description: [impact] systemd-networkd crashes due to assertion failure [test case] run systemd-networkd and FRR as described in original description below [regression potential] and regression would likely involve incorrectly configured routes [scope] this is needed only for f this is fixed upstream by commit 25b831bac8a5e545e1eda5199392c11c7aed4e42 which is first in v246, so this is fixed in groovy and later the code involved in this isn't present in b so this doesn't apply there [original description] lsb_release -rd Description: Ubuntu 20.04.2 LTS Release: 20.04 apt-cache policy systemd systemd: Installed: 245.4-4ubuntu3.6 [Impact] Networkd crashes when a blackhole route (route aggregation is installed as a blackhole route) is advertised via FRR. [Fix] networkd should not crash [Test case] Bug was reported to systemd (not accepted because systemd version too old) where a test case is described: https://github.com/systemd/systemd/issues/19648 Lower in the comment you can find the full debug log from networkd. Here you can see the core dump: https://drive.google.com/file/d/1tCKiOSnGkLbx3w9du5_NNepkOQZC_hx7/view?usp=sharing For convenience I also packed the relevant parts of the prod env in a vagrant box showing the issue: vagrant init matijavizintin/networkd- debug After some more testing i noticed that immediately after the route is being advertised, networkd detects the change and crashes with "Assertion 'ifindex' failed at src/network/networkd-link.c:757, function link_get(). Aborting." Steps how it happens: 1. networkd is running 2. frr is started without advertising the aggregated address 3. add aggregated address and reload frr 4. blackhole route is installed and networkd crashes with the error above To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1929122/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
