• Kubernetes Submit Queue's avatar
    Merge pull request #58433 from yue9944882/bugfix/lstat-parent-with-abs-path · f2b6e49e
    Kubernetes Submit Queue authored
    Automatic merge from submit-queue (batch tested with PRs 59103, 58433). 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>.
    
    bugfix(mount): lstat with abs path of parent instead of '/..'
    
    **What this PR does / why we need it**:
    
    If a nfs volume with improper permission is mounted on a Pod, operation of deleting this Pod will fail and the pod itself will be stuck at a 'TERMINATING' status. Kubelet cannot reconcile it correctly.
    
    This is because kubelet will try to find the mount-point with '..' file which needs `x` permission of dir.  When it's forbidden, the nfs volume will never umount without a correct mount-point finded.
    
    **Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
    Fixes #57095
    
    **Special notes for your reviewer**:
    
    **Release note**:
    
    ```release-note
    Get parent dir via canonical absolute path when trying to judge mount-point
    ```
    f2b6e49e
mount_linux.go 22.6 KB