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| author | gVisor bot <gvisor-bot@google.com> | 2021-02-11 00:37:14 +0000 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2021-02-11 00:37:14 +0000 |
| commit | f43172c57bb01219449d807c2bcb7abba4d51ac4 (patch) | |
| tree | f5e0aa281ce2e21c8e818289ae751d366234c34b /pkg/sentry/vfs | |
| parent | 9f5989402eea9549955a2682cffc87e6f5923c4e (diff) | |
| parent | 97a36d1696982949722c6d6da1e5031d79e90b48 (diff) | |
Merge release-20210201.0-82-g97a36d169 (automated)
Diffstat (limited to 'pkg/sentry/vfs')
| -rw-r--r-- | pkg/sentry/vfs/mount.go | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/pkg/sentry/vfs/mount.go b/pkg/sentry/vfs/mount.go index d865fd603..7063066ff 100644 --- a/pkg/sentry/vfs/mount.go +++ b/pkg/sentry/vfs/mount.go @@ -309,6 +309,11 @@ func (vfs *VirtualFilesystem) UmountAt(ctx context.Context, creds *auth.Credenti vfs.mountMu.Unlock() return syserror.EINVAL } + + if vd.mount == vd.mount.ns.root { + vfs.mountMu.Unlock() + return syserror.EINVAL + } } // TODO(gvisor.dev/issue/1035): Linux special-cases umount of the caller's |