Public bug reported: Hey,
Newer systemd makes use of locks placed on AF_UNIX sockets created with the socketpair() syscall to synchronize various bits and pieces when isolating services. On kernels prior to 4.18 that do not have backported the AppArmor socket mediation patchset this will cause the locks to be denied with EACCESS. This causes systemd to be broken in LXC and LXD containers that do not run unconfined which is a pretty big deal. We have seen various bug reports related to this. See for example [1] and [2]. If feasible it would be excellent if we could backport the socket mediation patchset to all LTS kernels. Afaict, this should be 4.4 and 4.15. This will unbreak a whole range of use-cases. The socket mediation patchset is available here: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=80a17a5f501ea048d86f81d629c94062b76610d4 [1]: https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/1575779 [2]: https://github.com/systemd/systemd/issues/9493 Thanks! Christian ** Affects: linux (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1780227 Title: locking sockets broken due to missing AppArmor socket mediation patches To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1780227/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
