[2172531] linux-oracle 7.0.0-1015: AppArmor forced stack breaks signals between threads in containerd (k3s) containers; Go programs hang in setgid (gosu)
LaunchpadBug #2172531 “linux-oracle 7.0.0-1015: AppArmor forced stack bre...” : Bugs : linux-oracle package : UbuntuAfter the update from linux-oracle 7.0.0-1013.13 to 7.0.0-1015.16 (Ubuntu 26.04 resolute, Oracle Cloud Ampere A1, arm64), every Kubernetes (k3s v1.36.5+k3s1, containerd/runc 1.4.2) pod whose entrypoint uses gosu (official postgres and mysql images) hangs forever at 60-100 % CPU and the database never starts. Booting 7.0.0-1013-oracle again fixes it. Reproduced on two separate hosts.
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