Fix race against systemd#1683
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/cc @mrunalp |
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Looks ok, /cc @cyphar |
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You need to sign your commit @vikaschoudhary16 |
- T0: runc triggers a systemd unit creation asynchronously from [here](https://github.com/opencontainers/runc/blob/master/libcontainer/cgroups/systemd/apply_systemd.go#L298) - T1: runc then moves ahead and starts creating cgroup paths(.scope directories), [here](https://github.com/opencontainers/runc/blob/master/libcontainer/cgroups/systemd/apply_systemd.go#L348). Kernel creates .scope directory and cgroup.procs file(along with other default files) in the directory automatically, in an atomic manner. - T3: systemd execution thread which was invoked at time `T0`, is still in the process of unit creation. systemd also trying to create cgroup paths and deletes the `.scope` directory which is created at time `T1` by runc from [here](https://github.com/systemd/systemd/blob/v219/src/shared/cgroup-util.c#L1630) in the code Signed-off-by: vikaschoudhary16 <choudharyvikas16@gmail.com>
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LGTM |
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LGTM |
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CI issues is addressed in #1682 |
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This fixes a race condition in runc/systemd at container creation time opencontainers/runc#1683 Signed-off-by: vikaschoudhary16 <vichoudh@redhat.com>
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This fixes a race condition in runc/systemd at container creation time opencontainers/runc#1683 Signed-off-by: vikaschoudhary16 <vichoudh@redhat.com>
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Automatic merge from submit-queue (batch tested with PRs 18040, 18097, 18098, 18106, 18087). UPSTREAM: opencontainers/runc: 1683: Fix race against systemd Thanks to @vikaschoudhary16 for doing all the legwork upstream on this! Fixes #16246 opencontainers/runc#1683 google/cadvisor#1861 kubernetes/kubernetes#58117 @derekwaynecarr
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Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>. Bump runc to d5b4a3e **What this PR does / why we need it**: This fixes a race condition in runc/systemd at container creation time opencontainers/runc#1683 **Special notes for your reviewer**: Depends on google/cadvisor#1861 `pull-kubernetes-verify` is failing because of this dependency only. **Release note**: ```release-note None ``` /sig node /cc @derekwaynecarr @sjenning @aveshagarwal @vishh @dchen1107 @dashpole @jeremyeder
This was referenced Apr 14, 2018
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opencontainers/runc#1683 opencontainers/runc#1754 opencontainers/runc#1772 opencontainers/runc#1781 Signed-off-by: Mrunal Patel <mrunalp@gmail.com>
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opencontainers/runc#1683 opencontainers/runc#1754 opencontainers/runc#1772 opencontainers/runc#1781 Signed-off-by: Mrunal Patel <mrunalp@gmail.com>
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@vikaschoudhary16 I still see this issue on runc v1.1.2, containerd 1.6.6, systemd 245 |
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T0, is still in the process of unit creation. systemd also trying to create cgroup paths and deletes the.scopedirectory which is created at timeT1by runc from here in the codeFixes openshift/origin#16246