opencontainers / opencontainers/runc

runc can not wait process in the container exits when share pid namespace

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Dominant language
Go
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Forks
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Avg merge
2d 8h
Merged PRs (30d)
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Description

Description

1.docker run with --pid=host
2.other processes in the container except the init process D live
3.docker rm -f $containerdID

Steps to reproduce the issue
Describe the results you received and expected

i received:
1.containerd-shim and init process reaped
shim and init repad
2.container cgroup residue
cgroup residue

What version of runc are you using?

[root@localhost ~]# runc --version
runc version 1.1.3
commit: 02a436f4f2efd8c5a2ec5c4ed3d196242d4edb77
spec: 1.0.2-dev
go: go1.17.3
libseccomp: 2.5.3

Host OS information

No response

Host kernel information

No response

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the reported docker run --pid=host and docker rm -f sequence with runc 1.1.3, then inspect how runc waits for and reaps processes when the container shares the host PID namespace. Done means the container exits cleanly without a reaped init or shim and without leftover cgroup state.

Written by the indexing model from the issue text.

Assessment

Tech stack
docker, go
Domain
cli, operating-systems
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
32/100

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