On Fedora 40 and Rocky Linux 9, containerd's TestPodUserNS fails with the following change on top of the main branch of containerd (containerd/containerd@bc3ce87):
diff --git a/script/setup/runc-version b/script/setup/runc-version index 6a99dbb7fd74..79127d85a49f 100644 --- a/script/setup/runc-version +++ b/script/setup/runc-version @@ -1 +1 @@ -v1.1.14 +v1.2.0
Failure:
default: === RUN TestPodUserNS
default: === RUN TestPodUserNS/userns_uid_mapping
default: pod_userns_linux_test.go:246: Create a sandbox with userns
default: E1022 10:38:44.240499 45870 remote_runtime.go:132] RunPodSandbox from runtime service failed: rpc error: code = Unknown desc = failed to start sandbox "ed8348b9215a10dba3ef48191f37dfa41c7a4648bbdf7fba9365fdf8a4c1ed4e": failed to create containerd task: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: error mounting "mqueue" to rootfs at "/dev/mqueue": setxattr /run/containerd-test/io.containerd.runtime.v2.task/k8s.io/ed8348b9215a10dba3ef48191f37dfa41c7a4648bbdf7fba9365fdf8a4c1ed4e/rootfs/dev/mqueue: operation not permitted
default: pod_userns_linux_test.go:251: Unexpected RunPodSandbox error: rpc error: code = Unknown desc = failed to start sandbox "ed8348b9215a10dba3ef48191f37dfa41c7a4648bbdf7fba9365fdf8a4c1ed4e": failed to create containerd task: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: error mounting "mqueue" to rootfs at "/dev/mqueue": setxattr /run/containerd-test/io.containerd.runtime.v2.task/k8s.io/ed8348b9215a10dba3ef48191f37dfa41c7a4648bbdf7fba9365fdf8a4c1ed4e/rootfs/dev/mqueue: operation not permitted
default: === RUN TestPodUserNS/userns_gid_mapping
default: pod_userns_linux_test.go:246: Create a sandbox with userns
default: pod_userns_linux_test.go:251: Unexpected RunPodSandbox error: rpc error: code = Unknown desc = failed to start sandbox "d89053afdbbc20f3b11b2eae107e3d70213b21f473707dd5baa762d1a317aa3c": failed to create containerd task: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: error mounting "mqueue" to rootfs at "/dev/mqueue": setxattr /run/containerd-test/io.containerd.runtime.v2.task/k8s.io/d89053afdbbc20f3b11b2eae107e3d70213b21f473707dd5baa762d1a317aa3c/rootfs/dev/mqueue: operation not permitted
default: === RUN TestPodUserNS/rootfs_permissions
default: pod_userns_linux_test.go:246: Create a sandbox with userns
default: E1022 10:38:44.623562 45870 remote_runtime.go:132] RunPodSandbox from runtime service failed: rpc error: code = Unknown desc = failed to start sandbox "d89053afdbbc20f3b11b2eae107e3d70213b21f473707dd5baa762d1a317aa3c": failed to create containerd task: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: error mounting "mqueue" to rootfs at "/dev/mqueue": setxattr /run/containerd-test/io.containerd.runtime.v2.task/k8s.io/d89053afdbbc20f3b11b2eae107e3d70213b21f473707dd5baa762d1a317aa3c/rootfs/dev/mqueue: operation not permitted
default: pod_userns_linux_test.go:251: Unexpected RunPodSandbox error: rpc error: code = Unknown desc = failed to start sandbox "83bda990b49619f5e98b41dd6fa5c6178264677bd3a2735debb66fb114ce0859": failed to create containerd task: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: error mounting "mqueue" to rootfs at "/dev/mqueue": setxattr /run/containerd-test/io.containerd.runtime.v2.task/k8s.io/83bda990b49619f5e98b41dd6fa5c6178264677bd3a2735debb66fb114ce0859/rootfs/dev/mqueue: operation not permitted
default: === RUN TestPodUserNS/volumes_permissions
default: E1022 10:38:44.971328 45870 remote_runtime.go:132] RunPodSandbox from runtime service failed: rpc error: code = Unknown desc = failed to start sandbox "83bda990b49619f5e98b41dd6fa5c6178264677bd3a2735debb66fb114ce0859": failed to create containerd task: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: error mounting "mqueue" to rootfs at "/dev/mqueue": setxattr /run/containerd-test/io.containerd.runtime.v2.task/k8s.io/83bda990b49619f5e98b41dd6fa5c6178264677bd3a2735debb66fb114ce0859/rootfs/dev/mqueue: operation not permitted
default: pod_userns_linux_test.go:246: Create a sandbox with userns
default: pod_userns_linux_test.go:251: Unexpected RunPodSandbox error: rpc error: code = Unknown desc = failed to start sandbox "e579723f7f6ece7cc7e6c5294fa73308777f15baacd3f0f317225c0911b9c01b": failed to create containerd task: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: error mounting "mqueue" to rootfs at "/dev/mqueue": setxattr /run/containerd-test/io.containerd.runtime.v2.task/k8s.io/e579723f7f6ece7cc7e6c5294fa73308777f15baacd3f0f317225c0911b9c01b/rootfs/dev/mqueue: operation not permitted
default: === RUN TestPodUserNS/fails_with_several_mappings
default: pod_userns_linux_test.go:246: Create a sandbox with userns
default: E1022 10:38:45.379638 45870 remote_runtime.go:132] RunPodSandbox from runtime service failed: rpc error: code = Unknown desc = failed to start sandbox "e579723f7f6ece7cc7e6c5294fa73308777f15baacd3f0f317225c0911b9c01b": failed to create containerd task: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: error mounting "mqueue" to rootfs at "/dev/mqueue": setxattr /run/containerd-test/io.containerd.runtime.v2.task/k8s.io/e579723f7f6ece7cc7e6c5294fa73308777f15baacd3f0f317225c0911b9c01b/rootfs/dev/mqueue: operation not permitted
default: E1022 10:38:45.401499 45870 remote_runtime.go:132] RunPodSandbox from runtime service failed: rpc error: code = Unknown desc = failed to create network namespace for sandbox "461d0d64ea29a2c2b36262ad005d0ebaed8f1ea1d969f6944b575165caebc8a2": required only one uid mapping, but got 2 uid mapping(s)
default: --- FAIL: TestPodUserNS (1.51s)
default: --- FAIL: TestPodUserNS/userns_uid_mapping (0.35s)
default: --- FAIL: TestPodUserNS/userns_gid_mapping (0.38s)
default: --- FAIL: TestPodUserNS/rootfs_permissions (0.35s)
default: --- FAIL: TestPodUserNS/volumes_permissions (0.41s)
default: --- PASS: TestPodUserNS/fails_with_several_mappings (0.02s)
https://github.com/containerd/containerd/actions/runs/11457221604/job/31880030218?pr=10877
This failure does not happen after reverting:
setgroups in user namespaces containerd/containerd#10741However, as the same test has been passing for crun without reverting them, probably this issue has to be rather fixed on runc's side.
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