diff options
| author | Andrei Vagin <avagin@google.com> | 2021-06-07 12:13:22 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2021-06-07 12:15:39 -0700 |
| commit | 7e4e71253ec7c06f2f4eaf387826f08a8b3373cb (patch) | |
| tree | af4dd5f75345d96b4245622ca94540bb9c154931 /pkg/sentry/kernel/task_cgroup.go | |
| parent | ee1003bde2291d6d892701b33c23bd7dd91d44f6 (diff) | |
cgroupfs: don't add a task in the root cgroup if it is already there.
PiperOrigin-RevId: 377975013
Diffstat (limited to 'pkg/sentry/kernel/task_cgroup.go')
| -rw-r--r-- | pkg/sentry/kernel/task_cgroup.go | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/pkg/sentry/kernel/task_cgroup.go b/pkg/sentry/kernel/task_cgroup.go index 25d2504fa..7c138e80f 100644 --- a/pkg/sentry/kernel/task_cgroup.go +++ b/pkg/sentry/kernel/task_cgroup.go @@ -85,6 +85,14 @@ func (t *Task) enterCgroupLocked(c Cgroup) { c.Enter(t) } +// +checklocks:t.mu +func (t *Task) enterCgroupIfNotYetLocked(c Cgroup) { + if _, ok := t.cgroups[c]; ok { + return + } + t.enterCgroupLocked(c) +} + // LeaveCgroups removes t out from all its cgroups. func (t *Task) LeaveCgroups() { t.mu.Lock() |