Fu Wei

duplicate with https://github.com/containerd/containerd/pull/8402. I think we can focus on existing pr and push forward.

> If we don't validate the task response, the sandbox task pid is ZERO which is later passed to the business container and requests it to join the namespace like...

> Why not consider starting with runtime support first, and then pushing the upper-level callers in the reverse direction. It's related to life-cycle change. I don't think we should support...

> we are in a custom kubernetes scenario. for this, we did some modification in kubelet. I see. Guess that it's stateful application. Reopen this and wait for other maintainers'...

> Need a test bucket for the config switch use_internal_loopback, test should run with the flag enabled and disabled I think we still need test case to check when containerd,...

@sreeram-venkitesh could you please rebase that change? thanks

@ahrtr I don’t have the bandwidth to handle this until mid-October. If it’s urgent, I can un-assign. Sorry about that.

It looks like there is bug in runc side...

> runc creates the userns and then the other namespaces to avoid a bug with selinux and mqueue in the kernel, it seems to be what we hit here. See...

``` 2024-08-01T20:05:59.8946831Z {"Time":"2024-08-01T20:05:59.88891373Z","Action":"output","Package":"go.etcd.io/etcd/tests/v3/e2e","Test":"TestCtlV3GetFormat","Output":"/home/runner/work/etcd/etcd/bin/etcdctl (/home/runner/work/etcd/etcd/bin/etcdctl_--endpoints=http://localhost:28121_--dial-timeout=7s_get_--write-out=protobuf_abc) (17766): \u0003abc\u0010\u0002\u0018\u0002 \u0001*\u0003123 \u0001 ctl_v3_kv_test.go:189: \n"} 2024-08-01T20:05:59.8949859Z {"Time":"2024-08-01T20:05:59.888928738Z","Action":"output","Package":"go.etcd.io/etcd/tests/v3/e2e","Test":"TestCtlV3GetFormat","Output":" \tError Trace:\t/home/runner/work/etcd/etcd/tests/e2e/ctl_v3_kv_test.go:189\n"} 2024-08-01T20:05:59.8951807Z {"Time":"2024-08-01T20:05:59.888933046Z","Action":"output","Package":"go.etcd.io/etcd/tests/v3/e2e","Test":"TestCtlV3GetFormat","Output":" \t \t\t\t\t/home/runner/work/etcd/etcd/tests/e2e/ctl_v3_test.go:263\n"} 2024-08-01T20:05:59.8953847Z {"Time":"2024-08-01T20:05:59.888936332Z","Action":"output","Package":"go.etcd.io/etcd/tests/v3/e2e","Test":"TestCtlV3GetFormat","Output":" \t \t\t\t\t/opt/hostedtoolcache/go/1.22.5/x64/src/runtime/asm_amd64.s:1695\n"} 2024-08-01T20:05:59.8956669Z {"Time":"2024-08-01T20:05:59.888940179Z","Action":"output","Package":"go.etcd.io/etcd/tests/v3/e2e","Test":"TestCtlV3GetFormat","Output":" \tError: \t\"\\r\\n\\n\\x19\\bĭ\\xd4\\xf1ֹ\\xe6\\xa7\\xe7\\x01\\x10\\xec\\xbeÚ\\xef\\x9e\\xd6\\xd6n\\x18\\x02 \\x02\\x12\\x10\\r\\n\\n\\x03abc\\x10\\x02\\x18\\x02 \\x01*\\x03123 \\x01\" does...